Minerals act regulations
Chapter 2
Responsibility
When shall a manager be appointed on a mine?
(2.5.2.1) If more than 50 persons are at one time employed underground a person who is
the holder of a mine manager’s certificate, valid for the class of mine and issued in
accordance with the regulations, shall be appointed as manager.
What are the requirements when the manager of a mine is not the holder of a mine
manager’s certificate?
(2.5.2.2) In the case of a mine where the manager is not the holder of a mine manager’s
certificate the chief inspector may, by notice in writing to the owner of such mine, require
the appointment of a person who is the holder of a mine manager’s certificate.
May a manager be appointed on two or more mines?
(2.5.4) The manager of a mine or works shall not in addition be appointed as manager of
any other mine without the written permission of the principle inspector of mines.
When may a manager appoint a sub-ordinate manager?
(2.6.1) The manager may appoint one or more competent persons as subordinate
managers to assist him in the control, management and direction of the mine or works.
Such person shall have the same responsibilities as the manager. The subordinates shall
not relieve the manager of any personal responsibilities.
(2.6.2) The chief inspector of mines may require the appointment of one or more subordinate managers when in his opinion it is necessary.
(2.6.4) Any appointment of sub-ordinate managers shall be reported within 3 days in
writing to the principle inspector of mines and shall include a copy of the letter of
appointment.
What are the manager’s duties as detailed in the regulations?
(2.9.2) The manager shall appoint persons to assist him in enforcing the regulations.
(2.9.4) The manager shall, as soon as practicable, report any breach of regulation or take
disciplinary steps directed by the chief inspector and enter the particulars in a register.
(2.10.2) The manager shall not permit any incompetent or inexperienced workmen to be
employed on dangerous work or on which the safety of persons depends.
(2.10.4) The manager shall provide that all accidents be reported to him without delay.
(2.10.5) The manager shall cause all plant and material to be kept in good order and
repair.
What are the manager’s duties regarding coffer dams?
(2.10.14) The manager shall submit plans and specifications approved by an engineer to
the principle inspector of mines for approval. Details of the construction and catchment
area of any dams to be constructed for the purpose of conserving water shall be included.
Any coffer dam or other barricade which is to be constructed underground for keeping
back water under a pressure exceeding 700KPA shall also be submitted.
What are the manager’s responsibilities with regard to slimes dams?
(2.10.15) The manager shall ensure the safe construction of any dump or slimes dam in
the neighborhood of any building or public place and no danger to life or damage to
property can result there from.
When may a person working at a reduction works or refinery be searched?
(2.10.19) The manager shall cause any person to be searched, by any person authorized
by him, whenever considered necessary.
Under what conditions shall machinery be under the general charge of:
1) An Engineer
(2.13.1) At any mine or works where:
- The designed rating of machinery used in the generation of power, together with the
power supplied from outside sources, exceeds the equivalent of 2500 kW or
- Any winding plant intended for conveying persons is installed all machinery shall,
subject to regulation 2.13.6.1, be under the general charge of an engineer appointed in
writing by the manager.
2) A Competent person
(2.13.2) At every mine or works where the designed power rating of machinery used in
the generation of power, together with the power supplied from outside sources, do not
exceed 2500 kW, all machinery shall be under the charge of a competent person who
shall be appointed in writing by the manager. An engineer may be appointed to be in
general charge of such machinery.
(2.13.6.1) At a mine or works where a engineer is appointed or should be appointed in
terms of regulation 2.13.1 and 2.13.3.1work may be continued without such engineer for
not more than 60 days in any period of 6 consecutive months provided that a competent
person is appointed in writing by the manager to be in charge of machinery during such
period or part thereof.
(2.13.6.2) The appointment of a competent person in terms of regulation 2.13.6.1 may not
result in an engineer being responsible directly to such person or to any other person
through such competent person.
A competent person appointed under regulation 2.13.2 or 2.13.6.1 shall have the same
duties and responsibilities as an engineer.
The appointment of a competent person under regulation 2.13.6.1 shall not relieve the
engineer who preceded him of any personal responsibilities for the period during which
he was in charge.
The manager may appoint one or more subordinate engineers to assist the engineer
at a mine, give the conditions of these appointments?
(2.13.3.1) To assist the 2.13.1 engineer the manager may appoint subordinate engineers,
who shall:
- Subject to regulation 2.13.6.1 be a certificated engineer.
- Be responsible to the engineer in general charge.
- Carry the responsibility assigned to him in his letter of appointment, and
- Not relief the 2.13.1 engineer of any responsibility assigned to him in terms of the
regulations.
Give the conditions when a subordinate engineer may assist an engineer in the
direction and control of subordinate engineers at a mine?
(2.13.3.2) The manager may appoint subordinate engineers to assist the 2.13.1 engineer
in the direction and control of subordinate engineers.
- Such engineer shall be a certificated engineer.
- Such appointment shall not relieve the 2.13.1 engineer or 2.13.3.1 engineer of any
personal responsibility.
Is the holder of an engineer’s certificate of competency an engineer in terms of the
regulations? Motivate the answer.
No. An engineer is a person who is the holder of an appropriate mechanical or electrical
engineer’s certificate of competency AND APPOINTED IN WRITING BY THE
MANAGER IN TERMS OF THE REGULATIONS.
What are the engineer’s or competent person’s duties and responsibilities?
(2.13.4.1) The engineer or competent person appointed in terms of regulation 2.13.2 or in
terms of regulation 2.13.6.1 shall, subject to regulation 2.13.12:
- Be responsible for the safe installation, proper operation, running and maintenance of
all machinery.
- Be responsible for the safe erection and maintenance of all buildings, structures and
tanks.
- Take all reasonable measures to ensure that all safety appliances, mechanisms and
guards are maintained in good condition.
- Take all reasonable measures to ensure the provision of the regulations relating to
machinery are complied with, and
- Take all reasonable measures to ensure that the work of any apparatus or machine, the
use of which may constitute a danger to any person, is stopped.
(2.13.4.2) Where a certificated engineer or competent person is required to be placed in
charge of machinery, such person shall not relieve the manager of any personal
responsibility.
When may the principle inspector of mines require the appointment of additional
engineers?
(2.13.5) The principle inspector of mines may require the appointment of additional
engineers or additional competent persons if in his opinion the responsibilities make such
appointment necessary.
What appointments of engineers shall be reported to the principle inspector of
mines?
(2.13.8) Any appointment of an 2.13.1 engineer or 2.13.2 competent person shall be
reported in writing by the manager to the principle inspector of mines within 3 days.
May an engineer be appointed on two or more mines?
(2.13.9) The certificated engineer or competent person in charge of machinery at a mine
or works shall not in addition be appointed to be in charge of any other machinery except
with the written permission from the principle inspector of mines.
May the manager of a mine appoint himself as engineer?
(2.13.10) The manager of a mine or works shall not appoint himself as engineer or
competent person in charge of machinery except with the written permission from the
principle inspector of mines.
When may other persons than an engineer be in control of machinery?
(2.13.12) Any person or class of person may be permitted in writing by the principle
inspector of mines, subject to conditions as he may specify, to exercise control over:
- The proper operation and running of machinery and
- The removal, moving, erection or re-erection of machinery not used for the conveyance
of persons.
When shall a safety officer be appointed at a mine or works and what shall the
qualifications of such a safety officer be?
(2.17.1) The manager shall appoint at least one safety officer if the number of employees
exceeds 300 or if the principle inspector of mines considers it necessary.
(2.17.2) No person shall be appointed as safety officer unless he is:
- By virtue of his training, knowledge and experience able to identify any threat to
the health or safety of persons in or at the mine, and
- Conversant with the requirements related to the health and safety of employees.
What are the requirements regarding the notice of appointment of safety officers?
(2.17.3) The manager shall notify, in writing, the principle inspector of mines of any
appointment of a safety officer within 5 days.
The notice shall be accompanied by:
- A copy of the letter of appointment, and
- Particulars regarding the training, knowledge, experience and qualifications of the
safety officer.
When shall a chief safety officer be appointed?
(2.17.4) When two or more safety officers have been appointed the manager shall
designate at least one as chief safety officer. When only one safety officer has been
appointed that safety officer shall perform the functions of safety officer and chief safety
officer.
Does the appointment of a safety officer relieve a person of personal
responsibilities?
(2.17.5) The appointment of a safety officer shall not relieve any other person of personal
responsibilities in terms of the regulations.
May work continue without a safety officer?
(2.17.6) Operations at a mine or works may continue without a safety officer for a period
of not more than 60 days in any 6 consecutive months provided the manager appoints a
competent person to act as safety officer.
(2.17.7) The appointment of a competent person as safety officer shall have all the duties
and responsibilities as safety officer and shall not relieve the safety officer of any
personal responsibilities.
Who appoints safety representatives?
(2.18.1) The manager of a mine or works shall in respect of each working place or group
of working places determined by him appoint in writing one or more employees, who are
acquainted with the conditions, as safety representative for a period determined by him.
When may working places be grouped together?
(2.18.2) Working places may be grouped together when the number of persons in a group
does not exceed 50.
What are the duties of a safety officer?
(2.19.1) Every safety officer shall:
- Inspect working places or machinery for which he has been appointed.
- Report any threat to the health or safety of any employee to the person in charge of the
working place or machinery.
- Take necessary steps to prevent any threats if such person is not available.
- Record all inspections and
- Investigate and report all accidents to the chief safety officer.
With what shall a safety officer satisfy himself during an inspection?
(2.19.1) Every safety officer shall in the course of any inspection satisfy himself that:
- All reasonable health and safety measures has been taken in respect of the use or
handling of machinery.
- Safety equipment is maintained in good order and properly used.
- The relevant regulations are being complied with, and
- All employees have been trained and have the necessary qualifications for the
safe execution of their work.
What are the powers of a safety officer?
(2.19.2) Any safety officer may:
- Hold meetings with the safety representatives at such times and places as arranged with
the manager. Such meetings shall be held at least every 3 months.
- After he has conducted an investigation submit to the manager for transmission to the
principle inspector of mines a report, and
- Make recommendations to the manager for transmission to the principle inspector of
mines any matter relating to the health or safety of persons.
What are the duties of the chief safety officer?
(2.19.3) A chief safety officer shall:
- As soon as practicable direct every accident or occurrence to a safety officer for
investigation.
- Give a report of an investigation or occurrence to the manager within 3 days.
- Record every accident in which an employee has been injured or has become ill to such
an degree that it resulted in the loss of one shift.
- Identify all critical areas regarding health and safety.
- Ensure that a safety officer inspects working places and machinery.
- Hold a meeting with all safety officers at least every 3 months.
What shall be included in the report by the chief safety officer which he shall submit
to the manager within 15 days after the end of each month?
(2.19.3) The chief safety officer shall transmit a written report to the manager within 15
days after the end of each month specifying:
- The number of accidents and occurrences during the month.
- The basic cause of such accidents and occurrences.
- Any failure to comply with any regulation.
- Any threat or potential threat to health or safety of persons and
- Any steps taken or to be taken to rectify such threat.
What are the duties of a safety representative?
(2.19.5) A safety representative shall report to the person in control of the working place
or machinery any threat to the health or safety of any employee.
Chapter 3
General provisions
Name two places where notices prohibiting unauthorized entrance shall be posted
up at the entrances?
(3.1.2) A notice shall be posted up by the manager that no unauthorized person shall enter
a mine or works or any shaft or building or place where machinery has been erected.
What are the requirements for making known the contents of the regulations to all
workers?
(3.2) An abstract, authorized by the chief inspector of mines, of the relevant regulations
directly concerning the workmen shall be posted up at suitable places where it can be
conveniently read.
An abstract of such regulations shall be supplied at cost price to every employee.
What are the requirements regarding the translation of regulations applicable to the
prevention of compensatable diseases?
(3.4) Every regulation related to the prevention of a compensatable disease shall, in so far
as it concerns persons not proficient in any of the official languages, be translated to such
other language as the manager may determine.
State the regulation regarding notices for the treatment of gassing etc?
(3.5) One or more notices with relatively simple directions for the immediate treatment of
gassing, heat stroke, heat exhaustion, drowning and electric shock shall be posted
up at every change house and emergency station.
What notices are required at every electric generating station and sub-station?
(3.6) Notices shall be displayed at suitable places at every electrical generating station
and sub-station:
- Prohibiting any unauthorized person from handling or interfering with electrical
apparatus.
- Giving directions to the procedure in the case of a fire and
- Giving directions to the treatment of persons suffering from effects of electric shock.
(21.1.2) Any place where electrical apparatus is installed and which may be a danger to
persons shall be provided with notices at all entrances prohibiting unauthorized access.
What notices shall be posted up at a shaft head?
(3.7) A notice shall be posted up at each shaft head showing the time when shifts are
lowered or raised, as well as the time of blasting. A clock shall be installed at each
main entrance to the workings.
When shall notices be renewed?
(3.8.1) When any notice or copy thereof becomes defaced or destroyed it shall be
renewed as soon as possible.
Who may remove or deface a notice?
(3.8.2) No unauthorized person shall remove or deface any notice or copy thereof.
What are the requirements when any workman is unable to read the regulations?
(3.9) Where any workman is unable to read the regulations, the person in charge shall see
that such workman is made acquainted with the regulations concerning him.
May any person be excluded from complying with the regulations?
(3.10) No person shall be excluded from doing such acts as may be necessary to comply
with the provisions of the regulations or be liable for damages for doing such acts as may
be necessary in order to comply with the regulations.
May a person depute his work to any other person?
(3.13) No person shall depute any other person to do his work without the permission of
his superior nor shall any person cease to supervise persons under his charge without
permission.
Describe the regulation regarding safety precautions not to be damaged or
removed?
(3.14) No person shall interfere with, render ineffective, alter, damage, mis-use or
remove anything or any arrangement which is provided for the protection, safety or
health of persons unless specifically authorized in writing by the manager, mine overseer
or engineer.
In the case of a mine which is closed down, authorization shall be given by the principle
inspector of mines.
Who may or may not interfere with safety equipment?
(Section 84)
Unless specifically authorized by the employer:
- No person other than an inspector may remove anything that is provided in the interest
of health or safety or cause that equipment to be removed.
- No person other than an inspector may remove PPE from a mine or cause that
equipment to be removed.
When may working clothes be removed from the mine?
[9.2(6)]
No employee may remove working clothes from the mine unless such clothes have been
de-contaminated. Unless specifically authorized by the employer: No person other than
an inspector may remove PPE from a mine or cause that equipment to be removed.
What are the conditions applicable to an exemption from a regulation?
(3.15.1) When circumstances are such that the regulation can not be applied or it involves
much difficulty or whenever it is necessary for the purpose of carrying out a experiment
or tests, the principle inspector of mines may grant exemption under such conditions as
he may determine. Any exemption from a regulation shall only be granted after
consultation with the principle inspector of mines.
The chief inspector or principle inspector of mines may withdraw such exemption if
considered necessary in the interest of health and safety.
What are the requirements when the principle inspector of mines grant exemption
or permission in terms of any regulation?
(3.21) The principle inspector of mines may impose such conditions as he may deem
necessary when he grants permission or exemptions.
The principle inspector of mines may direct a regulation applicable to one mine to
another mine. How does he do this?
(3.16.1) The principle inspector of mines may direct that any regulation applicable to any
mine shall be applied to any other mine by giving written notice to the manager.
(3.16.2) The manager shall keep copies of the notice, posted up at suitable places, where
it can be read.
Does any regulation applicable to a shaft apply to a winze?
(3.17) The principle inspector of mines may direct that any regulation applicable to a
shaft shall be applied to a winze by giving written notice to the manager.
For what reasons are a mine declared a fiery mine and how is a declaration to this
effect carried out?
(3.18.1) The principle inspector of mines may declare any mine to be a fiery mine by
reason of the danger from inflammable gas in the mine. Such declaration shall be
by written notice to the manager.
What are the requirements when other means than explosives are used to break
rock or other mineral?
(3.19) The principle inspector of mines may direct that any regulation applicable to the
use of explosives shall be applied where other means are used to break rock or
other mineral.
Describe the requirements for Sunday work?
No person shall perform, cause or permit any other person to perform any work in
connection with the operation of a mine or works, on a Sunday, Christmas day, Day of
the Covenant, Good Friday or Republic day unless the work is:
- Attending to or working on pumping machinery, ventilating machinery or machinery
for the supply of light,
heating power or any boiler forming part of such machinery.
- Such work above or below the surface as cannot be delayed without causing danger or
damage to life, health or
property, including work in workshops necessary to any such work.
- Operating any continuous chemical, metallurgical or smelting process, if a stoppage
thereof would diminish the effectiveness of the process.
- The policing of the mine or works, medical and health services or services in connection
with housing or feeding services.
- Work in respect of which the minister declared is necessary in the national interest.
The principle inspector of mines may, on application to an inspector, grant special
permission for doing temporarily and necessary work in addition to work described above
on the days mentioned.
(3.3) Every permission or a copy thereof granted by the principle inspector of mines shall
be posted up in a suitable place at the mine or works.
Chapter 4
Workmen
What is the provision of the regulations in terms of every person at the end of the
shift underground?
(4.1.1) At the end of the shift every person shall be brought to the surface as soon as
possible and shall not be kept waiting unnecessary at the shaft stations.
What shall be done when a person remains underground?
(4.1.2) The manager, mine overseer or shift boss shall take all reasonable steps to ensure
no unauthorized person remains underground after the hoisting is concluded and shall
record the name of any person remaining underground and the time such person reached
the surface.
Describe the regulation regarding the complaint book at a change house.
(4.4.1) The manager shall provide a record book at each change house in which
somebody may enter a complaint in connection with safety or health. Such record book
shall be inspected and signed daily by a competent person appointed by the manager and
at least once a month by a manager or engineer.
(4.4.5) No person shall tamper with or damage the record book.
(4.4.6) A copy of above regulations shall be posted up near the record book.
What shall the person having knowledge of any defect in the water service or dust
allaying devices do?
(4.4.2) Any person having knowledge of any defect in the water service or dust allaying
devices any appliance for the health and safety of persons shall record it in the record
book immediately when coming off shift.
(4.4.4) A verbal report of such defect shall be made to a shift boss or other official as
soon as possible. The person discovering such defect shall report it to an official and not
only record it in the record book.
What are the requirements of the regulations regarding wages being paid at hotels
and bars etc?
(4.6) No wages shall be paid at a hotel, bar, canteen or place where liquor is sold.
What are the requirements of the regulations with regard to persons in a state of
intoxication on a mine?
(4.7.1) No person in a state of intoxication or in any condition which may render him
incapable of taking care of himself or persons under his charge shall be allowed to enter
the workings of a mine or be in the vicinity of any working place or near any machinery.
Such person may be arrested immediately by the manager or some person appointed by
him and immediately handed over to the police and shall be guilty of an offence.
Who may give special permission for intoxicating liquor to be taken to a place of
work at a mine?
(4.7.2) No person shall take liquor into the workings of a mine or to any place on surface
without the permission of the manager and no person shall have liquor in his possession
while at work or at any place of work.
What are the requirements of waiting places?
(4.10) Every waiting place shall be disinfected and be kept in a clean condition.
Give the restrictions on the pollution of sanitation in a working area.
(4.11) No person shall pollute the workings with faeces or urine or misuse any latrine.
(4.12) No fluent from any sewerage system shall contain anything which may cause
injury.
What are the maximum hours a person may work in 7 consecutive days?
(4.14.1) No employee shall work, be caused or permitted to work for more than 48 hrs in
any consecutive 7 days exclusive of the time taken in getting to and from the place where
the work is performed. Provided any time taken by persons employed underground to get
from the shaft head or other entrance to the mine to the workplace and back in excess of
60 minutes is working time.
When may a person work more than 48hrs in 7 consecutive days?
(4.14.2) No employee shall work, be caused or permitted to work for more than 48hrs in
7 consecutive days except:
- Work necessitated an accident or other emergency or
- Work which is not risk work or
- Risk work on surface permitted by the principle inspector of mines, or
- Work performed for the purpose of maintaining health or safety permitted by the
principle inspector of mines or
- Work involving transporting persons to and from their working places underground
permitted by the principle inspector of mines.
No employee shall work more than 60 hrs in any consecutive 7 days except work due to
an emergency permitted by the principle inspector of mines.
What is the maximum period that an employee is permitted to work in any
continuous period of 24 hours?
(4.15) No employee shall work, be caused or permitted to work 2 or more shifts during
any continuous period of 24 hrs except:
- Work necessitated by an accident or other emergency or
- Repair work to equipment which cannot be delayed without causing serious interruption
to the operation of the mine or
- A shift worker at the change of shift where his relieve fails to arrive and a replacement
is not immediately available or
- Other cases permitted by the principle inspector of mines specified in writing to
the manager.
What record shall the manager keep on every employee?
(4.16.1) The manager shall keep a record, acceptable to the principle inspector of mines,
showing each employee’s:
- Name and residential address.
- Occupation.
- Ordinary hours and overtime for each day and month. (Not applicable to officials)
- Normal rate of pay, actual rate paid and the date of payment. (Not applicable to
officials)
- Any other particulars prescribed by the principle inspector of mines.
How long shall the manager keep this record?
(4.16.2) The manager shall keep the record for one year and shall produce it when
requested so by the principle inspector of mines.
When shall every person inform the manager of a change of address?
(4.16.3) Every employee shall produce his address to the manager and shall notify him of
any change in such address.
In a certain area of a mine a noise factor of 90dB was measured. What are the duties
of the manager in this regard?
(4.17.1) When the noise exposure in any place where persons may travel or work exceeds
85 dB the manager shall take the necessary steps to reduce the noise to below this level.
(4.17.2) If it is not possible the manager shall implement a hearing conservation program.
(4.17.3) Any PPE that may be necessary for a hearing conservation shall be supplied free
of charge by the manager.
(4.17.4) No person shall damage, discard or render ineffective any PPE provided to him.
[11.4] Maximum level of exposure: In any working place where the sound pressure level
of an 8 hr working day or 40 hr week is equal to or exceeds 85 dB.
Chapter 5
Surface protection
When shall a person be secured to a life-line?
(5.8.1) No person shall work, cause or permit any other person to work in any position
from which falling or slipping may result in injury unless such person is, where
practicable, secured by a life-line or otherwise suitably safeguarded.
(5.8.2) No person shall enter, cause or permit any other person to enter any accumulation
of water or mud if it is not known to be significant unless such person is secured by a
life-line or suitably safeguarded.
(7.8.1) No person shall work, cause or permit any other person to work, in or near any
part of the workings of a mine where slipping or overbalancing may result in his sliding
or falling down any slope where the inclination is 45º or more, or in his falling vertically,
unless he is secured by a life-line or otherwise safeguarded.
Under what circumstances is the use of lifelines in steep workings not required?
(7.8.2) The use of life-lines in steep workings shall not be compulsory in the case of
persons installing or repairing equipment in a vertical shaft or winze provided the
manager or mine overseer has given permission after having satisfied himself that:
- It would impede such person’s safe work performance.
- Such persons had the training and experience necessary to carry out the work, and
- Such persons are under supervision of a competent person.
When shall a person wear a hardhat?
(5.8.3) No person shall work, cause or permit any other person to work or be present at
any place where there might be danger of falling mineral or material unless that person is
wearing a hardhat in good condition and approved by the chief inspector of mines.
(7.7.1) No person shall enter, remain, cause or permit any other person to enter or remain
in the underground workings of a mine unless such person is wearing a hard hat in good
condition and approved by the chief inspector of mines.
(7.7.2) In opencast workings no person shall enter, remain, cause or permit any other
person to enter or remain at or near any vertical or steeply inclined face or sidewall which
exceeds a vertical height of three meters unless such person is wearing a hard hat in good
condition and approved by the chief inspector of mines.
State the precautions to be taken when water is containing poisonous or injurious
matter?
(5.9.1) Water containing poisonous or injurious matter must be effectively fenced off to
prevent inadvertent access to it, and notice boards shall be put up in suitable places to
warn persons from making use of such water.
(5.9.2) Water containing any injurious matter may not be permitted to escape until
declared “not harmful”.
Chapter 6
Outlets, ladder ways and traveling ways
At what height is hoisting arrangements necessary?
(6.4) Hoisting arrangements shall be provided for every person who has to ascend in a
vertical or inclined shaft, winze or other working when the height exceeds 150m
vertically.
When shall a ladder way be provided?
(6.5.1) A ladder way shall be provided when the inclination from the horizontal exceeds
20º:
- In a shaft or outlet to surface if it is the only means of outlet to surface.
- In a connection from any part of the workings to a shaft or outlet to surface if such
connection is the only means of outlet to a shaft or outlet to surface.
- In a shaft or wince in the course of sinking.
When is a ladder way not necessary?
(6.5.2.1) A ladder way need not to be provided if at least two winding plants of adequate
capacity are available for immediate use to convey persons.
What are the requirements for the power supply to the two winding plants in lieu of
a ladder way?
(6.5.2.1) Adequate power from at least two independent sources so that in the event of
failure of one power supply the other supply will be readily available. A ring feed or
duplicate supply lines will be considered as two independent power sources.
What are the requirements with regard to ladder ways in sinking shafts?
(6.5.1) The ladder way shall be within the minimum necessary distance from the bottom
of the shaft to protect it from damage during blasting.
From the lower end of the ladder way there shall be provided:
- Chains, chain ladders or wire rope ladders if the inclination is more than 35º and less
than 70º.
- Chain ladders or wire rope ladders where the inclination is 70º or more.
State the regulations for the standby winding plant?
(6.5.2.2) The standby winding plant shall be tested daily with a load equivalent to the
total mass of the persons permitted by running the conveyance for a complete trip down
and up the winding compartment. In the event such winding plant depending for its
operation on power generated at the mine, sufficient fuel and essential stores for the
generation of power for the operation of the winding plant shall be kept at the mine.
Ladder or stair ways:
The following provisions shall apply to every ladder or stairway in or on a mine:
(6.6.1) Where the inclination from the horizontal is more than 20º and less than 70º:
- The ladder shall not be continuous over a distance greater than 16 m.
Where the inclination from the horizontal is more than 35º:
- The ladder shall project at least 1 m above the mouth of the shaft or resting place except
when a strong handrail is provided at such mouth or resting place.
(6.6.2) Where the inclination from the horizontal is 70º or more:
- Each section of any stairway or ladder shall not be more than 10 m without a break.
- Provided with resting places or resting platforms at the breaks, and
- Installed in such a way that the bottom end is not in line with a resting place or
platform.
(6.6.4) Every permanent ladder or stairway with an inclination of 75º or more and a
height exceeding 5 m:
- Shall be enclosed by a cage provided with a backrest.
- The backrest shall not be further than 700 mm from the rungs, and
- The backrest shall start from a point 2 m or less from the bottom of the ladder, and
- The backrest shall extend at least 900 mm beyond the resting point or platform.
What are the requirements of a ladder being fixed in an overhanging position?
(6.6.5) No ladder shall be fixed in an overhanging position.
How shall every ladder be constructed?
(6.6.6) - Every ladder shall be:
- Of strong construction.
- Securely fastened to the wall and
- Maintained in good order.
When shall a wire rope or strand of wire rope be used in a mine for climbing
purposes?
(6.7) A wire rope or strand of wire rope shall not be allowed to be used for climbing
purposes in a mine if the rope or strand is kinked, knotted or contains broken or
projecting wires.
Chapter 7
Protection in workings
Describe the regulations concerning fencing of dangerous excavation?
(7.3.2) Entrances to every vertical or steeply inclined shaft, winze, sump, rock-pass or
other dangerous excavation shall be kept closed by a fence, barrier, door or gate or shall
be kept adequately covered to prevent persons having access to or falling into such
excavation.
Describe the regulation regarding loose articles where it accidentally can fall down
any steeply excavation?
(7.5.1) No timber, rock tools or other articles shall be placed or allowed to remain where
it accidentally can fall down any steeply excavation endangering the safety of persons.
What tools may be carried on ladder ways?
(7.5.2) No person shall carry any drill, tool or any loose material on a ladder way in a
vertical or steeply inclined shaft or winze except so far as may be necessary in executing
repairs.
When may a person enter an accumulation of water?
(7.8.3) No person shall enter, cause or permit any other person to enter an accumulation
of water other than an accumulation known to be insignificant, unless he is secured by a
life-line or wear a life-jacket or life belt.
What does the regulation stipulates on debris and other loose material and stones
close to any open face workings or quarry?
(7.9.2) At any open face workings or quarry all debris and other loose material and stones
on the surface shall be cleared to a distance of at least 3m from the edge.
Chapter 9
Explosives
Which vehicles shall be used for transporting explosives on surface?
(9.15.1) No person shall transport explosives, cause or permit explosives to be
transported in or on any vehicle propelled by mechanical means unless such vehicle has
been approved in writing by the principle inspector of mines.
Chapter 10
Ventilation, gases and dust
Which internal combustion engines shall be used underground in a mine and under
what conditions?
(10.25.1) No internal combustion engine other than a diesel engine which is approved by
the principle inspector of mines shall be used underground in any mine.
How shall diesel be delivered underground?
(10.25.7) Diesel shall be delivered underground in such a manner that no spillage takes
place during delivery. When the fuel is piped underground the pipes shall be drained each
time after use.
How shall diesel be stored underground?
(10.25.7) Diesel shall be stored underground only in robust closed containers which do
not leak.
How much diesel may be stored underground?
(10.25.7) The quantity of diesel stored underground shall not be more than three day’s
estimated consumption except with the written permission of the principle inspector of
mines.
How shall re-fueling of diesel powered engines be carried out underground?
(10.25.9) Re-fueling of diesel powered engines underground shall only be carried out at
such properly established filling stations.
What are the regulations regarding diesel engine filling stations?
(10.25.11) - No unauthorized person shall enter any filling station, and
- No person shall smoke or use an open light in the vicinity of any filling
station.
(10.25.12) In every mine, other than a fiery mine, suitable notices shall be posted up and
maintained at the entrances prohibiting persons from smoking or using any
open light in the vicinity of a filling station.
Where shall every mobile diesel powered unit be kept underground in a coal mine
when not in use?
(10.25.14) In any coal mine every mobile diesel powered unit underground shall when
not in use be kept in a place approved by the manager.
Chapter 11
Precautions against fire
Give the requirements of any enclosure containing electrical apparatus?
(11.11) Any enclosure containing stationary electric motors, switchgear or other electrical
apparatus, excluding telephones, bells and incandescent lamps, shall as far as possible be
built and fitted with non-inflammable materials.
Chapter 15
Lighting, Safety lamps and Contraband
What are the illumination requirements of all working places?
[9.2(9)]
The employer must ensure that the illumination at all working places is sufficient to
enable employees, who conforms with the requirements of the vision tests, to perform
their work safely.
Describe the regulation regarding the carrying of a lamp?
(15.1) No person shall work or travel or cause or permit any other person to work or
travel in any un-illuminated part of a mine or works unless he or such other person
carries a light.
Describe the requirements for the lights on trains?
(15.3.2) At all times underground and at night on surface the leading end of every
moving train and every self-propelled moving machine shall be provided with a light of
sufficient intensity shining in the direction of travel to enable the driver to identify any
dangerous conditions ahead and to stop the train or machine in time. The average light
intensity in the direction of travel shall not be less than 10 lux at a distance of 20 m.
Chapter 16
Winding
What legal requirements are necessary before a person may be allowed to ride in or
on a conveyance in a mine?
(16.1) No person shall ride or cause or permit any other person to ride in or on a
conveyance operated by a winding plant unless it is permitted by a prescribed permit.
(16.2.1) The manager of a mine shall not use or permit to be used a winding plant unless
he is in possession of a prescribed permit issued by the principle inspector of mines.
When is a permit for a winding plant not required?
(16.94) The prescribed permit shall not be required for a winding plant that is driven by a
motor developing not more than 250 KW, provided that such winding plant is not used
for the lowering or raising of persons or other than persons engaged in repairing or
examining a shaft and does not operate in any portion of a shaft likely to interfere with
the conveyance operated in that shaft served by a winding plant for which a prescribed
permit has been granted.
What are the requirements for the application of use of a winding plant?
(16.2.2) Every application for the use of a winding plant shall be made to the principle
inspector of mines on the form obtainable from him.
(16.2.3) The principle inspector of mines may grant a permit to use such winding plant
subject to conditions as he may specify.
Explain the two places where the permit to operate a winding plant shall be kept?
(16.2.5) The permit shall be kept at the mine office and a legible copy shall be displayed
in a suitable glazed frame in the engine room.
May the principle inspector of mines direct a regulation applicable to elevators to
apply to winding plants?
(16.2.7) The principle inspector of mines may direct any regulation applicable to
elevators to apply to a automatic or semi-automatic plant by giving written notice to the
manager.
Who may carry out periodic tests or inspections on a winding plant?
(16.3) The principle inspector of mines may carry out specific or periodic tests or
inspections of any winding plant.
When calculating the mass of persons for the purpose of the regulations, what mass
shall be allowed as the maximum mass of each person?
Winder: 75 kg
Chairlift: 70 kg
Elevator: 70 kg
Describe the requirements for the starting, stopping and lifting power of a winder?
(16.5) The winding engine shall be such that:
(16.5.1) When running at various speeds with light or heavy loads it can be readily
slowed and stopped and after being stopped it can be restarted immediately in either
direction, and
(16.5.2) It can lift from the bottom to the top of the shaft the maximum unbalanced load
on one drum. This provision shall not apply where other means exist for persons to reach
surface.
Describe the requirements for the brakes and holding power of a winding engine
where the rope is securely attached to the drum?
(16.6.1) Each winding drum or winding sheave shall be provided with an adequate brake
which shall be kept in proper working order.
(16.6.2) For the drum type of winding engine where the rope is securely attached to the
winding drum the brake, without assistance from any counter balancing, shall be
capable of holding without slipping a load on the rope an equivalent combined
mass of:
- The conveyance and its attachments.
- The maximum permitted mass of mineral, or double the maximum permitted mass of
persons, or the maximum permitted mass of material together with double the
maximum permitted mass of persons when both material and persons are conveyed
simultaneously, whichever is the greatest and
- The mass of rope between the sheave and conveyance when the conveyance is at a point
in the shaft which produce the maximum static torque on the brakes.
Describe the requirements for the brakes and holding power of a winding engine for
a friction drive or sheave type winding engine where the ropes are not securely
attached to the drum?
(16.6.3) For a friction drive winding engine where the rope are not securely attached to
the drum the brake shall be able to hold, without slipping, the maximum static out of
balance load which occurs when one of the conveyances:
- Is loaded with the permitted mass of mineral or
- Is loaded with double the permitted mass of persons or
- Is loaded with double the permitted mass of material together with double the permitted
mass of persons when material and persons are conveyed simultaneously or
- Is removed from its bridle.
Explain the purpose of flanges or horns on a winding drum?
(16.6.4) Every winding drum shall have flanges or horns or other appliances to prevent
the rope from slipping off or coiling unevenly.
Explain the requirements for the minimum turns of rope on the drum?
(16.6.5) Except for a friction drive winding engine there shall be not less than 3 turns of
rope on the drum when the conveyance is at the lowest point in the shaft and the end of
the rope shall be securely fastened around the shaft of the drum.
What are the requirements of a friction or sheave type drive concerning slipping?
(16.6.6) For a friction or sheave type winding drive, where the rope is not securely
attached to the drum or sheave, there shall be no dangerous slipping under any possible
conditions.
Which drum of a double drum winder shall have overlay rope?
(16.6.7) Every winding drum at the driver’s right hand side shall have overlay rope.
Where only one drum is used it shall have overlay rope.
What are the requirements of the regulations as far as the operating levers of a
winding plant are concerned?
(16.6.8) The control lever shall follow the overlay rope in the direction of movement.
(16.6.9) The break lever shall be pulled towards the driver to apply the breaks.
Discuss all the locking devices used on winders?
(16.6.11) The operating mechanism of the clutch of every winding drum shall be
provided with a locking device to prevent inadvertent withdrawal of the clutch.
If the clutch is not clearly visible from the driver’s operating position, means shall be
provided to indicate to the driver at all times the extent to which the clutch is engaged or
disengaged.
(16.6.12) It shall be impossible to un-clutch any winding drum unless the brakes are fully
applied and it shall be impossible to release the brake until the clutch is fully engaged and
securely locked.
(16.6.13) All bolts and other fittings of winding drums, brakes and clutches shall be
rendered secure by means of suitable locking devices.
Explain the requirements of the depth indicators for a winding plant?
(16.7) In addition to any marks on the rope, every winding engine shall be provided with
reliable depth indicators conveniently situated, which will at all times show clearly and
accurately to the winding engine driver at his operating position the position of the cage,
skip or other means of conveyance and where a reduction in winding speed are necessary.
The pointer of the dial indicator on the driver’s right hand side shall move in a clockwise
direction when lowering, and the pointer of a post and spiral indicator shall move up or
down as the conveyance move up or down.
When is only one depth indicator necessary?
(16.7) Only one depth indicator need to be provided on a friction winding engine, single
drum winding engine and winding engine having two drums permanently fixed on one
shaft.
Explain the requirements for the warning device for an ascending or descending
conveyance?
(16.8) Where the length of wind below the uppermost landing exceeds 100m provision
shall be made whereby the driver is warned of the arrival of the ascending conveyance at
a point in the shaft the distance of which from the uppermost landing is not less than 3
revolutions of the drum. Provided that in the case of a single drum winder a similar
device shall be provided to warn the driver of the approach of the descending conveyance
to the lowest landing place.
Explain the requirements for the over-wind and over-speed prevention devices?
(16.9.1) Every winding engine shall be fitted with at least:
- One effective automatic over-wind prevention device, and
- One effective automatic over-speed prevention device.
Explain the requirements for the slack rope detection device?
(16.9.2.1) The employer must install a device that detect slack rope on every winding
plant in which the rope is attached to the drum operating in a vertical shaft excluding a
shaft in the course of being sunk.
What must the slack rope device do when it detects a slack rope condition?
(16.9.2.2) The device must either automatically stop all winding operations in the vertical
shaft safely or warn all winding drivers operating in such shaft of the slack rope
condition.
What must the employer do to rectify slack rope conditions?
(16.9.2.3) The employer must establish an effective and safe procedure for rectifying any
slack rope conditions.
What are the procedures for a slack rope condition in a vertical shaft?
(16.9.2.4) All winding operations in the vertical shaft must cease when a slack rope
condition occurs, except such operations necessary for rectifying the slack rope condition
authorized by the engineer.
(16.9.2.5) No winding operations may resume, except operations permissible by the
engineer to rectify the slack rope condition, until the slack rope condition has been
rectified.
Explain the requirements for the speed indicator and tachograph of a winding
plant?
(16.10) Any winding engine with a permitted speed of over 5 m/s shall be fitted with a
speed indicator and a tachograph which shall be used and maintained in efficient working
order. The speed indicator shall be so situated that the winding speed can be easily read at
all times by the winding engine driver from his operating position.
What are the requirements for the construction of cages?
(16.11) Every cage used for the conveyance of persons shall be of substantial
construction and shall be provided with a proper roof and doors.
The cage shall be enclosed in such a manner as to prevent any portion of the body of any
person therein from accidentally coming into contact with equipment in the shaft or the
sides of the shaft.
The doors shall be securely attached to the cage and arranged so that they cannot be
opened outwards or accidentally. Provision shall be made for adequate ventilation
through the cage.
What shall the construction of other conveyances used for transporting persons
comply with?
(16.12) Every skip or kibble, used for the regular conveyance of persons shall be
provided with a substantial roof or cover that will safeguard the occupants.
What shall the conveyance used for examining or doing repair work comply with?
(16.13) Every conveyance used for examining, repairing or doing other work, shall be
provided with a substantial roof or cover and shall be enclosed to protect any person from
accidentally falling out.
What are the requirements of any examination platform used in a shaft?
(16.14) Where the roof or cover of a conveyance is used as a platform for persons
engaged in examining, repairing or doing work in a shaft or winze, the persons shall be
protected by a cover immediately above them. Such cover shall be removed as soon as
the work is completed.
When is a trailer allowed to be used for the transportation of persons?
(16.15) No trailer:
- Shall be used in a shaft where persons are regularly conveyed.
- Shall be attached to a conveyance when such conveyance is used for the transportation
of persons and
- Shall be used for the regular transportation of persons, unless it is allowed by a
prescribed permit.
(16.68) Persons shall not be raised or lowered in a conveyance attached to the normal
conveyance except with the written permission from the principle inspector of mines.
No rope, bar, link, chain or other connection shall be used for winding purposes
unless it conforms to certain conditions. What are those conditions?
(16.16) No rope, bar, link, chain or other connection shall be used for winding purposes
unless it is of good quality and manufacture, free from any visible defect and of adequate
calculated strength.
Discuss the accidental disconnection of a conveyance?
(16.17) The connection between:
- Any winding rope and the cage, skip, bucket, kibble, other means of conveyance or
counterpoise
- Any balance rope or tail rope and the conveyance or counterpoise and
- Any connecting rope and the conveyance and any trailer or other attached conveyance
shall be such that no accidental disconnection can take place.
When shall the connections between the winding rope and the conveyance be
annealed?
(16.18) At intervals of not more than 6 months the connections between
- Any winding rope and conveyance or counterpoise
- The conveyance and trailer or other attached conveyance and
- Any balance rope or tail rope and the conveyance or counterpoise shall be annealed or
given other proper heat treatment or shall be discarded and replaced. With connections
of a class of steel approved by the chief inspector, the interval for heat treatment may
be extended with the written permission from the chief inspector of mines.
(16.76) If the connections are of a class of steel approved by the chief inspector of mines
such connections shall be dismantled, cleaned and then examined by the engineer or
person appointed in terms of regulation 2.13.2
What record shall be kept of the connections?
(16.19) A proper record shall be kept of the heat treatment and working life of the
connections. The engineer shall add to the record the report on the procedure followed in
the treatment and his comments on the results. All the connections shall be marked
clearly for identification.
How must a winding rope be manufactured?
(16.20.1) All winding ropes must be manufactured by an accredited manufacturer.
What must the diameter and construction of the winding rope be?
(16.20.2) The diameter and construction of the winding rope must be suited to the
diameter of the sheaves and drums.
May a winding rope which has been joined or reinforced be used?
(16.21) A winding rope which has been joined or reinforced in any manner may not be
used as part of a winding plant without the written permission of the principle
inspector of mines.
May a winding rope, guide rope or balance rope be re-used?
(16.23.1) Any winding rope, balance rope or guide rope which has previously been in use
may not be re-used unless the breaking strength has been determined by a destructive test
by a approved rope testing station and it comply with the relevant regulations.
(16.23.2) Any winding rope, balance rope or guide rope which has previously been in use
may not be re-used unless the engineer is in possession of the documented history of the
working life of the rope.
What are the provisions of the regulations regarding a spare rope?
(16.24) For every winding plant in use there must be in reserve and ready for use at all
times a spare winding rope that complies with the regulations. One such rope may be kept
for more than one winding plant if that rope is suitable for use on such other winding
plants.
What other provisions of the regulations apply before any rope shall be installed?
(16.25) No winding rope, balance rope or guide rope may be installed unless the manager
is in possession of a certificate not older than two years confirming that the breaking
strength complies with the regulations.
What duties must the engineer perform before the raising or lowering of persons
may be allowed after a new rope has been installed?
(16.27.1) Any newly installed rope and the rope connections must be carefully examined
by the engineer and may not be used for the raising or lowering of persons until the
conveyance loaded with the maximum permitted mass has been run for two complete test
trips between the highest and lowest stopping places.
(16.27.2) The engineer must record and sign the results of the examination immediately
in the driver’s log book and shall enter a true report in the rope record book.
What information must be submitted to the principle inspector of mines when a
winding rope is installed?
(16.28.1)
- Name of manufacturer.
- Date of manufacture, coil number, length.
- Mass per meter, diameter, width or thickness.
- Construction of rope: type and length of lay, number of strands, class of heart, type of
lubricant.
- Construction of strands, number of wires, diameter of wires, class of core, class
of steel, tensile strength.
- Breaking force.
- Rope test certificate and place of test.
- Whether used for balance or winding purposes.
- Name and type of shaft.
- Name of compartment.
- Winding plant certificate number.
- Date installed.
What information must be submitted to the principle inspector of mines when a
winding rope in use is replaced?
(16.28.2) When any winding rope in use is replaced the following information must be
submitted to the principle inspector of mines:
- Reasons for discard.
- The life in terms of winding cycles.
- The time in use and
- Any other particulars the principle inspector of mines may require.
What value for “g” must be used in winder calculations?
(16.30.2) 9.81 m/s²
What are the requirements of the regulations when a conveyance is suspended by
two or more ropes?
(16.32) Where a conveyance is suspended by two or more winding ropes:
- Such ropes must have the same diameter and strength.
- Arrangements must be made to equalize the tension in the ropes.
- Each rope must be assumed to carry equal share of the load.
How must the condition of a winding rope be assessed?
(16.33) The condition of a winding rope or balance rope must be assessed according to
SABS COP for the condition assessment of steel wire ropes on mine winders, SABS
0293, and the rope may not be used if the condition assessed at that point in the rope has
reached the discard criteria.
Describe the requirements for the cutting, testing and re-capping of winding ropes?
(16.41.1.1) A sample of every winding rope in use must be cut from the end attached to
the conveyance or counterweight (front-end) at intervals not exceeding 6 months unless
the winding system does not allow shortening of the rope.
Describe the requirements for the cutting, testing and re-capping where winding
ropes are connected to a compensating sheave?
(16.41.1.2) Where winding ropes are connected to a compensating sheave on the
conveyance or counterweight, that part of the ropes that is in contact with the sheave on
the conveyance or counterweight must be cut off and the rope re-terminated at intervals
not exceeding 3 months.
What must the length of the sample be?
(16.41.1.1) The length of the sample must be as specified by an approved rope testing
station.
What must be done with the sample?
(16.41.2) The manager must send the sample within 2 weeks to an approved rope testing
station where the breaking strength and general condition must be determined.
(16.41.3) The rope testing station must provide the manager with a certificate showing
the results of the test.
(16.41.4) If the sample received at the rope testing station is in a condition not permitting
a satisfactory test a new sample must be provided.
Describe the requirements of the signaling arrangements of a winding plant?
(16.42.1) Unless exempted in writing by the principle inspector of mines every shaft in
which winding is carried on, other than a shaft in the course of being sunk, shall be
provided with some efficient signaling arrangement for interchanging distinct signals
between:
- The winding engine driver and the bank, and
- The winding engine driver and every point below the bank from which winding is
carried on.
Describe the requirements for a signal system for shaft examination?
(16.42.2) Every shaft where persons travel in or on the conveyance while carrying out
any examination, repair or other work shall be provided with some efficient means
approved by the principle inspector of mines whereby they can signal effectively from
any depth in the shaft to the winding engine driver.
Describe the requirements for a signal system at inclined sinking shafts?
(16.42.3) Every incline shaft in the course of being sunk shall be provided with some
efficient signaling arrangement for each winding plant for interchanging distinct signals
between:
- The winding engine driver and the bank, and
- The winding engine driver and every established landing station below the bank, and
- The winding engine driver and a point not more than 40m from the bottom of the shaft.
When this point is more than 15m from the bottom of the shaft some efficient signaling
arrangement shall be provided between this point and the bottom of the shaft.
Describe the requirements for a signal system at vertical sinking shafts
(16.42.4) Every vertical sinking shaft in the course of being sunk shall be provided with 2
separate means of distinct signaling from the bottom of the shaft and from any depth in
the shaft to the winding engine driver and the interchange of distinct signals between the
winding engine driver and the bank and the winding engine driver every established
landing station below the bank.
Describe the requirements for the signal system for a shaft not in the course of being
sunk and where persons are conveyed and where the signal arrangements are
electrically operated.
(16.43.1) Every shaft not in the course of being sunk and where persons are conveyed
and where the signal arrangements are electrically operated there shall be provided and
maintained in good working order 2 separate, independent and efficient signaling
arrangements referred to as the locked-bell system and the call-bell system.
Describe the requirements for the locked-bell system
(16.43.2) The locked bell system shall be for the:
- Interchange of signals between the winding engine driver and the bank, and
- Interchange signals between the winding engine driver and every established landing
station below the bank, but
- Shall not enable the banksman to signal on this system to anyone but the winding
engine driver.
(16.43.3) The system shall be so arranged that the winding engine driver can distinguish
between signals received from the bank and signals below the bank.
Describe the locking requirements for the signal system?
(16.43.4) The signal system shall be arranged and maintained so as to prevent
unauthorized signals being given. The signal operating mechanism shall be enclosed in a
metal casing and shall be kept locked when not in use. The key shall be removable and be
kept by the banksman, onsetter or other authorized person.
Describe the bell-brake interlock device?
(16.43.5) There shall be a device which prevents the conveyance from being raised or
lowered after the winding engine driver has given a signal until a return signal has been
received from the onsetter or banksman.
Describe the call-bell system
(16.43.6) The call-bell system shall:
- Enable signals to be transmitted from the bank to the winding engine driver, and
- Enable signals from every established point below the bank to the winding engine
driver, but
- The winding engine driver are not allowed to transmit signals.
- Any person can transmit accident to person signal (10 followed by station nr) and
accident to shaft signal. (1 long ring)
- Enable signals to be interchanged between the bank and every established point below
the bank.
How shall the tone of the signals from a locked-bell system differ from that of a callbell system?
(16.43.8) The tone of the locked-bell system shall be such as to easily distinguish it from
the tone of the call-bell system and visa versa.
What are the requirements of a telephone in the place of a call-bell system?
(16.43.9) It shall be necessary to provide only one call-bell system in a shaft or winze
where efficient telephonic communication is provided between the bank and every
established landing station for persons.
May other signaling arrangements be used?
(16.44) Other signalling arrangements may be used with the written permission of the
principle inspector of mines.
May other special signals be used?
(16.46) Special signals may be used provided they have been approved in writing by the
principle inspector of mines.
What are the requirements when a person acting in conflict with the code of signals?
(16.47) Any person acting in conflict with the code of signals or of any approved special
signals shall be guilty of an offence.
May a person enter or leave a conveyance before the appropriate signals have been
exchanged?
(16.48) No person shall enter or have access to a cage or shall leave a cage until the
appropriate signals have been exchanged. If a signal can not be given on the bell system a
other distinct signal shall be given.
What are the requirements regarding the code of signals to be posted up?
(16.49.1) The code of signals or abridged form thereof approved by the chief inspector of
mines as well as all the special signals shall be displayed in a suitable form in letters not
smaller than 10mm. The principle inspector of mines will determine if such notice are
suitably displayed.
Where shall the notices be posted up?
(16.49.1) Such notices shall be posted up in the winding engine room, at the bank and at
all stations. It shall only be necessary to display the signals being used.
When are guides compulsory for cages in a vertical shaft?
(16.50) Every vertical shaft and winze exceeding 30m in depth shall be provided with
guides for skips, cages or other means of conveyance unless exempted in writing by the
principle inspector of mines.
Describe the safety measures required for a shaft crossing for workmen?
(16.51) At any place in a shaft where it is necessary for workmen to pass from one side to
the other, provision shall be made for them to do so without entering or crossing a
compartment in which winding is taking place. Such passage shall be clearly fenced off
from moving parts of machinery and from any conveyance.
Who may enter the compartment of a winding shaft and under what conditions?
(16.52) No person shall enter or cross a compartment of a shaft or headgear in which
winding is taking place except for the purpose of entering or leaving the conveyance or
for the purpose of conducting an examination, effecting repairs or doing necessary work
in the compartment.
May any winding operations be carried on in a shaft while persons are engaged in
effecting repairs?
(16.53) No winding operations shall be carried on in a shaft or headgear while persons
are engaged in effecting repairs, conducting an examination or doing work in such a shaft
or headgear except:
(16.53.1) Where such winding operations are necessary for the purpose of effecting the
repairs, conducting the examination or doing the work or
(16.53.2) Where the persons engaged in repairs, conducting the examination or doing the
work are adequately protected from the conveyances and other winding equipment used
in such winding operations as well as from falling stones and material or
(16.56) Where work is being done at the bottom of the shaft in the course of being sunk.
May any repairs be carried out in a shaft while winding operations are being
carried on?
(16.54) No person shall effect repairs, conduct an examination or do other work in a shaft
or a headgear while winding operations are being carried on in such shaft or headgear
except:
(16.54.1) Where such person is adequately protected from the conveyances and other
winding equipment as well as from falling stones and material or
(16.54.2) Where the winding operations are necessary for the person to effect the repairs,
conduct the examination or to do work or
(16.56) Where work is being done at the bottom of the shaft in the course of being sunk.
What are the requirements where the driver must be specially warned?
(16.55) The person in immediate charge of any repairs, examination or maintenance in a
winding compartment of a shaft, winze or headgear shall warn the winding engine driver
of such repairs, examination or maintenance and shall enter in the presence of the driver
such warning in the driver’s logbook. Such entry shall be countersigned by the driver and
by any driver relieving him. Where it is not practicable for the person in charge of such
repairs, examination or maintenance to enter such warning, the entry shall be made by the
driver on duty. The entry shall be cancelled by the person in immediate charge of the
repairs, examination or maintenance on completion. Work may be done at the bottom of a
shaft in the course of being sunk without following the above procedure.
When the persons doing the examinations, repair or other work are not protected from the
conveyance, falling stones or material all other winding engine drivers of other
conveyances operating in the shaft shall be warned in the same way.
When shall spring keps or jack catches be provided in the headgear? What is the
purpose of spring keps or jack catches?
(16.57) Where winding is carried on in a shaft or winze there shall be fitted above the
bank spring keps or jack catches or some other effective equipment to support the
conveyance detached from the rope as a result of an over-wind.
When shall detaching hooks be provided? What is the purpose of detaching hooks?
(16.58) Detaching hooks shall be fitted for a winding system in a vertical shaft where the
end of the rope is fastened to the drum. The detaching hooks shall detach and support the
conveyance from the winding rope if an over-wind occurs. Detaching hooks need not to
be fitted to the rope used in a vertical shaft in the course of being sunk.
What are the requirements of the retarding device for a winding system in a vertical
shaft where the rope is not fastened to the drum?
(16.59.1) For a winding system in a vertical shaft where the rope is not fastened to the
drum:
The over-run space in the headgear shall be provided with guides or other appliances to
retard a over-wind conveyance to minimize the risk of the conveyance coming into
contact with the headgear buffer or sheave, and
(16.59.2) The over-run space at the bottom of the shaft shall be provided with guides or
other appliances to retard a over-wind conveyance before it comes into contact with any
fixed obstacle.
What are the requirements on over-run clearance in the headgear of a shaft?
(16.60) The headgear shall be carried sufficiently high to allow a clearance of at least
7.5m in which the conveyance can travel above the highest landing place for persons
before it comes into contact with any fixed obstacle excluding any retarding appliance.
What are the requirements on over-run clearance at the bottom of the shaft?
(16.61) The shaft shall be sufficiently deep to allow an over-run space of at least 7.5m in
which the conveyance can travel below the lowest landing place for persons before it
comes into contact with any fixed obstacle excluding any retarding appliance.
Such over-run space need not to be provided in a shaft in the course of being sunk or in a
shaft not deeper than 300m where balance or tail ropes are not used.
What are the requirements for every station level?
(16.61.1) The employer must for every station level:
- Identify and clearly demarcate an area surrounding the shaft as the shaft
station.
- Show the shaft station, including the location of all safety devices on a plan,
and
- Prominently and conspicuously display a copy of such plan at every station.
What device or combination of devices must the employer install at all entrances to
a shaft and where must these devices be installed?
(16.61.2.1) The employer must install a device or combination of devices that prevent
inadvertent access of vehicles to the shaft as close as practicable to all entrances to the
shaft.
What are the requirements of the regulations with respect to these devices?
(16.61.2.2) The device or combination of devices must be:
- Fail safe or lockable.
- Equipped with mechanisms that prevent unauthorized operation or removal.
- Operated only under the direct supervision of a competent person appointed by the
engineer or by the person appointed in terms of regulation 2.13.2
- Operated only if a conveyance is being used for the loading or unloading of persons,
equipment, material, mineral or explosives at the entrance to the shaft.
What are the responsibilities of the employer with regard to any self propelled
mobile machine entering a shaft station?
(16.61.2.3/4) The employer must install a device or combination of devices or the access
to the shaft station must be such as to limit the speed of any self propelled mobile
machine entering the shaft to ensure that the kinetic energy of the machine is not greater
than the energy absorption capacity of the device.
(16.61.2.4) The employer must ensure that procedures are in place or the devices are
equipped with mechanisms that prevent the unauthorized operation or removal of such
device.
What are the responsibilities of the engineer or person appointed in terms of
regulation 2.13.2 with regard to access configuration and devices at entrances to
shafts?
(16.61.2.5) The engineer or person appointed in terms of regulation 2.13.2 must:
- Approve any access configuration.
- Approve the design of the device and
- Ensure that every device is installed and maintained in good working order.
May a self-propelled mobile machine be parked in the shaft station?
(16.61.3) No self-propelled mobile machine may be parked in the shaft station.
When may a self propelled mobile machine enter the shaft station under power?
(16.61.4) A self propelled mobile machine may only enter the shaft station under power if
it is under the direct supervision of a competent person appointed by the engineer or the
person appointed in terms of regulation 2.13.2
When may persons travel in a conveyance loaded with mineral?
(16.62) No person shall travel in a conveyance operated by a winding engine if such
conveyance is loaded or partially loaded with mineral and no person shall travel in a
conveyance operated by a winding engine that is being used simultaneously for the
winding of mineral. The manager or mine overseer may authorize persons engaged in
sinking operations in a vertical shaft to descent in a conveyance operated by a winding
plant that is simultaneously used for the raising of mineral.
When may persons travel with material or explosives?
(16.63) No person shall travel with material or explosives in a conveyance operated by a
winding engine and in a conveyance operated by a winding engine used simultaneously
for the winding of material or explosives.
(16.64) The manager, mine overseer or engineer may grant permission in writing for
persons to travel with material if such material is not likely to endanger persons in the
conveyance and the manager shall:
- Cause a list to be kept of all the material for which permission has been granted.
- Ensure all persons authorized to give signals are aware of the list of material, and
- Make a copy of the list available to all persons concerned.
Which persons may be authorized, and by whom, to travel with material and for
what reasons?
The manager, mine overseer or engineer may authorize the following persons to travel in
a shaft with material or explosives if such traveling is necessary for the efficient carrying
out of their duties.
(16.65.1) Onsetters and their gangs.
(16.65.3) Persons engaged in sinking operations, conducting an examination or effecting
repairs.
(16.65.4) Persons required to ensure the safe passage through the shaft of material which
cannot be conveyed inside the conveyance.
Who may load or unload explosives?
(16.66) No person shall place explosives in or remove them from a conveyance operated
by a winding engine except under the immediate supervision of the banksman or onsetter
or a competent person authorized by the manager or mine overseer.
Which persons may ride outside a conveyance?
(16.67) No person shall ride on the roof, side or any position outside a conveyance or on
a special platform except persons doing examinations or repairs and if authorized to do so
by the manager or mine overseer and if it is necessary to sufficiently carry out their
duties.
Explain the requirements for a bucket to be steadied before it may be conveyed?
(16.69) No bucket or other conveyance that can sway shall be allowed to leave the top or
bottom of the shaft unless it has been steadied.
How shall a bucket or other means of conveyance be filled?
(16.70) No bucket or other means of conveyance shall be filled with loose rock or ground
above the level of the brim.
How shall tools or other material be fastened in a conveyance?
(16.71) Tools or other material which project above the cage or other means of
conveyance shall be fastened securely and placed so that no arresting device is effected.
When shall the winding installation be given a trial run?
(16.72) When winding has been stopped for repairs or blasting or any other purpose for
more than one hour or when a conveyance has been changed the winding engine shall not
be used for the raising or lowering of persons until the conveyance has been run at least
one complete trip down and up. Provided that this regulation shall not apply for the
raising or lowering of persons conducting an examination or doing repairs and provided
further that where such stoppage is confined to a portion of a compartment, the
requirements of the regulation shall apply only to such portions.
Describe the requirements for shaft examination?
(16.73) The manager and engineer shall, in respect of his area of responsibility, appoint
in writing competent persons whose duty it shall be to examine carefully to an extent to
be clearly defined in their letters of appointment at least once in each week and at
intervals not exceeding 10 days the guides or rails, shaft compartment, doors, gates,
barriers and equipment at stations, landing platforms and loading boxes.
Describe the requirements for winding equipment examination by the appointed
competent persons?
(16.74) An engineer or competent person appointed in terms of regulation 2.13.2 shall
appoint in writing some competent person or persons (electrician, fitter, boilermaker,
rigger/ropesman) whose duty it shall be to examine carefully:
(16.74.1) At least once in each day:
- The winding ropes.
- The balance ropes or tail ropes.
- The connection of the winding ropes to the drums.
- The connection between the winding rope and conveyance or counterpoise.
- The connection between the conveyance and any trailer or other attached conveyance.
- The connection between any balance rope or tail rope and the conveyance or
counterpoise.
- The conveyance and the main members by which they are suspended and any safety
catches attached thereto.
- The pulley wheels and sheaves.
- The brakes.
- The depth indicators and
- The safety devices and all external parts of the winding equipment upon the proper
working of which the safety of persons depends.
Provided that these daily examinations will not be necessary on a Sunday, Christmas day,
Day of the Covenant, Good Friday or Republic day if the winding plant makes less than
50 trips on such day and
(16.74.2) At least once in each week:
- The signaling arrangements and safety devices used in connection therewith.
Describe the requirements for winding equipment examination by the engineer?
(16.75) An engineer or competent person appointed in terms of regulation 2.13.2 shall
examine carefully:
(16.75.1) At least once in each week and at intervals not exceeding 10 days:
- The over-speed and over-wind prevention devices, and
- The external parts of the winding engine.
(16.75.3) At least once in each month at intervals not exceeding 45 days:
- The structure of the winding and balance or tail rope to determine the amount of
deterioration thereof.
- The connections between the winding rope and the drum.
- The connections between the winding rope and the conveyance or counterpoise.
- The connections between the conveyance and any trailer or other attached conveyance.
- The connections between any balance rope or tail rope and the conveyance or
counterpoise and
- The sheave wheel or wheels.
(16.75.6) At least once in every 6 months at intervals not exceeding 200 days:
- Dynamically testing the automatic over-wind and over-speed prevention devices.
(16.75.2) At least once in each year:
- The winding engine as to the condition of the internal mechanical parts and as far as
reasonable practical, the internal electrical parts.
Describe the examination procedure of the rope to ascertain the amount of
deterioration thereof?
(16.75.3) An engineer or competent person appointed in terms of regulation 2.13.2 shall
examine carefully at least once in each month at intervals not exceeding 45 days the
structure of the winding and balance or tail rope to determine the amount of deterioration
thereof.
The person making the examination shall:
- Select places to be cleaned.
- Note any reduction in the circumference of the rope.
- Note any variation in the length of lay of the rope.
- Note the superficial condition of the wires as to wear, corrosion, fractures and
brittleness and
- Note all other data necessary to detect the amount, extent and distribution of the
deterioration of the rope.
If the examination discloses features such as undue or rapid wear or fractures of the
wires, which, although not constituting sufficient reason for condemning the rope, call for
more than usual attention, the examination shall be made more frequently.
Describe the requirements if on any examination there is discovered any weakness
or defect which may endanger the safety of persons?
(16.77) If on any examination (daily, weekly, monthly or yearly on shaft or winding
plant) there is discovered any weakness or defect which may endanger the safety of
persons and such weakness or defect can not be immediately fixed the person making the
discovery shall report such weakness or defect to the manager without delay. Until such
weakness or defect is fixed the winding plant shall not be used except in so far as may be
necessary to fix the weakness or defect.
Describe the requirements of the examination the engineer shall do after every
accident or occurrence?
(16.75.5) The engineer or competent person appointed in terms of regulation 2.13.2 shall
examine carefully after every accident or occurrence and before winding operations
are resumed all portions of the winding equipment affected by such accident or
occurrence on which the safety of persons depends.
Describe the requirements for the machinery record book?
(16.78) The manager shall provide every winding plant with a machinery record book in
which shall be entered the name of each person appointed to do examinations and the
duties of each person. The person doing the examination shall record and sign a true
report of each examination. An engineer or competent person appointed in terms of
regulation 2.13.2 shall scrutinize and countersign this record at least once in each week.
Describe the requirements for the rope record book.
(16.79) The manager shall provide each winding plant with a rope record book in which
shall be entered the name of the engineer or person appointed in terms of regulation
2.13.2 doing examinations on the winding, balance and guide ropes and its connections.
The engineer shall enter a true report of every test or examination in the rope record
book.
What particulars of the rope shall be entered into the rope record book?
(16.79) The following particulars of each winding, balance and tail rope shall be entered
into the rope record book:
a) Name of manufacturer:
- date of manufacture
- coil number
- length
- diameter
- mass/m
b) Construction of rope:
- type and length of lay
- number of strands
- class of heart
- type of lubricant
c) Construction of strands:
- number of wires
- diameter of wires
- class of core
- class of steel
- tensile strength
d) Breaking force.
e) Rope test certificate nr and place of test.
f) Whether used for winding or balance purposes.
- name and type of shaft.
- name of compartment.
- winding plant certificate number.
- date installed.
g) Dates of recapping, shortening or turning.
- dates of testing and the breaking force obtained at each test.
- date taken off.
- dates of annealing or renewing connections.
Describe the requirements for the shaft log book?
(16.80) The manager shall provide for each shaft or winze where persons are regularly
conveyed a shaft log book in which shall be entered:
- The name of the appointed persons to do shaft exam and the duties of each person.
- A true report of every shaft examination. This report shall be recorded and signed
without delay by the person making the examination and the reports shall be scrutinized
and countersigned by the manager or mine overseer and by an engineer or competent
person appointed in terms of regulation 2.13.2 at least once in each week.
Describe the requirements for the driver’s logbook?
(16.81) The manager shall provide every winding engine except a automatic winding
engine with a driver’s log book which shall be kept in the winding engine room and in
which shall be recorded in duplicate:
- A true report of the condition of the winding engine, the brakes, clutches, reversing
gear, depth indicator and all other fittings. Such report shall be made and signed by the
driver for each period of charge, the time and duration which shall be recorded.
- A true report of the condition of the signaling arrangements together with any signals
received by the driver which he has questioned. Such report shall be made and signed by
the driver for each period of charge.
- Any special instructions involving the safety of persons given to the driver and the time
such instructions were given. Such entry shall be signed by the person giving the
instruction and shall be countersigned by the driver.
- Any warning giving and the time such warning was given.
- The contents of the conveyances and the last signals received by the driver when his
relief is about to take over and such report shall be countersigned by the driver by whom
he is relieved.
- The entries in the driver’s logbook shall be scrutinized and countersigned daily by the
appointed competent persons doing daily examinations. The duplicate shall be
scrutinized and countersigned within 24 hrs by an engineer or competent person
appointed in terms of
regulation 2.13.2 and shall be kept by him for at least 30 days.
Describe the requirements of the winding engine driver to have a certificate?
(16.83.1) Nobody shall drive, be permitted or caused to drive a winding plant for which a
prescribed permit has been issued unless he is a certificated winding engine driver. A
learner winding engine driver may drive a winding plant under the direct supervision of a
certificated winding engine driver while no persons are being conveyed.
(16.96) The engineer shall satisfy himself that any person who is not a certificated
winding engine driver and who shall drive a winding plant not permitted for the
conveyance of persons, is competent to do so.
May a winding engine driver be engaged which haven’t driven a winding engine in 1
year?
(16.84) When a winding engine driver is engaged the manager shall record the winding
engine driver’s certificate number and type of certificate. When a winding engine driver
has not driven a winding engine in 2 years or more the manager shall not engage him but
refer the matter to the principle inspector of mines who may require that such driver
undergo a medical examination and proficiency examination.
May a person speak to the winding engine driver while he is operating the winding
engine?
(16.85) No person shall speak to or in any way distract the attention of the person
operating a winding engine while it is in motion, except a person in authority and then
only in cases of necessity or emergency.
When may a winding engine driver start the winding engine?
(16.86.1) The driver shall not start his engine before he has received a distinct and proper
signal to do so unless he has been instructed in writing to do so by the manager, mine
overseer, engineer or person appointed in terms of regulation 2.13.2 or unless he has
received the clear signal 2 pause 2 or unless he has sole control of the conveyance.
(16.86.7) The winding engine driver shall not start his engine until the expiry of at least
10 seconds after receiving a signal to raise or lower persons. This shall not apply when
blasting is about to take place in a shaft in the course of being sunk.
When shall the driver act on a signal if he has been unable to do so for 1 min or
more?
(16.86.2) The winding engine driver shall not act on any signal if he has been unable to
do so within 1 minute after receiving it but shall request a repeat signal. After having
received the clear signal he may move the winding engine at any time during his shift at
his discretion but when a period of more than 5 minutes has lapsed after he has received
the clear signal he shall move the conveyance slowly.
At what maximum speed shall a winding engine driver operate the winder?
(16.86.3) The driver of the winding engine shall not run the engine at a speed greater than
that fixed by the principle inspector of mines.
Describe the duty of the winding engine driver to avoid shocks?
(16.86.4) The winding engine driver shall, except in the case of an emergency, avoid
shocks in starting, stopping and running the engine.
What is the duty of the winding engine driver to prevent an over-wind?
(16.86.5) The winding engine driver shall apply correctly every device and means
available to prevent the conveyance from over-running the signaled destination or the
highest or lowest landing place and shall prevent any danger to the safety of persons or
damage to winding equipment.
What is the duty of the winding engine driver to prevent the conveyance from
moving in the wrong direction?
(16.86.6) The winding engine driver shall apply correctly every device and means
available to prevent the conveyance moving in a direction opposite to that signaled.
May the winding engine driver respond to a signal on the call-bell system?
(16.86.8) The winding engine driver shall not act in response to any signal on the callbell system other than the one long ring meaning accident to shaft.
State the tests to be done before a drum may be un-clutched?
(16.86.9) The driver of a winding engine shall not un-clutch a drum until he has assured
himself by testing the brake against sufficient power that it is in proper condition to hold
the load suspended from the said drum.
May a winding engine driver lower material on an un-clutched drum?
(16.86.10) Lowering from an un-clutched drum shall not be permitted. When a drum is
un-clutched the driver shall use the brake only to maintain the drum stationary.
Describe how the driver shall test a friction clutch?
(16.86.11) The winding engine driver shall test the holding power of the clutch after
engaging the clutch and before releasing the break.
The test shall be made against the normal starting current while the break of the other
drum is kept off.
When is clutching prohibited on a winding engine?
(16.86.12) The driver of a winding engine shall not perform clutching operations while
persons are in either of the conveyances operated by the engine.
May persons be lowered or raised on an un-clutched sinking platform?
(16.93.4.1) In a shaft being sunk or equipped clutching may be performed with a sinking
platform winder with persons on the sinking platform necessary to ensure that the
operations are carried out safely.
When shall the driver give the signal that clutching operations are complete?
(16.86.13) The driver shall not give the signal for clutching operations to be complete
until he has engaged the clutch and has securely locked it and tested it unless he intends
operating the winding engine on a single drum during shaft examination, shaft repairs or
shaft sinking operations.
Describe the requirements for the duration of shift of the winding engine driver?
(16.86.14) The driver of a winding engine shall not work, be caused or permitted to work
a longer shift on the winding engine than 10 hrs, except where permission has been
obtained from the principle inspector of mines and under conditions as he may direct.
What are the duties of the winding engine driver when conveying persons?
(16.86.15) The winding engine driver shall take all reasonable measures to safeguard
persons being conveyed and to avoid any unnecessary delays.
What signals may any person give?
(16.87) No unauthorized person shall give any signal other than an accident signal or
shall in any manner interfere with the signaling arrangements.
May any person be allowed to carry out the duties of an onsetter or a banksman?
(16.88) No person shall be permitted to carry out the duties of a banksman or onsetter
unless he is the holder of an onsetter’s certificate issued in accordance with the
regulations. Every appointment of a banksman or onsetter shall be made in writing by the
manager.
Who may give signals for the raising or lowering of persons in a winding shaft other
than an onsetter or banksman?
(16.89.1) No person other than the banksman or onsetter shall give signals for the raising
or lowering of persons.
When the onsetter or banksman are not available a competent person with written
permission from the manager may give signals for the conveyance of himself and any
person traveling with him. A list of the permitted persons shall be submitted to the
principle inspector of mines on demand.
The ganger or miner in charge at the bottom of a shaft in the course of being sunk or a
person acting under his immediate supervision may give a signal to raise persons.
Any person duly authorized in writing by the manager or mine overseer may give signals
for the conveyance of persons between the main mineral loading station at the bottom of
a vertical or inclined shaft and the lowest landing station for persons.
Who may give signals for the raising or lowering of material or mineral?
(16.89.2) No person other than the banksman or onsetter shall give any signal for the
raising or lowering of material or mineral unless authorized by the manager or mine
overseer. Where the winding plant is also used for the conveyance of persons such
authorization shall be in writing.
Describe the requirements of the onsetter or banksman to have knowledge of shaft
operations?
(16.90) No person shall be appointed as a banksman or onsetter and no person shall be
authorized to give signals unless such person has sufficient knowledge of the shaft
operations and of the signals to be given.
State the special duties of a banksman, onsetter or other person authorized to give
signals for winding operations?
(16.91) The banksman, onsetter or other person authorized to give signals for winding
operations shall:
- Not give any signal until all persons are properly placed in the conveyance and the
doors are properly shut.
- Not give any signal until all persons who are to leave the conveyance are out and clear.
- Ensure that the roof or cover is properly in position.
- Take all reasonable measures to prevent persons from having unauthorized access to the
conveyance and winding compartments.
- Not allow any person to travel in a conveyance simultaneously with mineral or material.
- Not allow any person to ride on the roof or in any position outside a conveyance.
- Not allow more than the maximum number of persons to ride.
- Not allow any unauthorized person to give signals.
- Not give the clear signal or any signal to raise or lower the conveyance unless all
persons are in a position not be endangered by the movement of such conveyance.
- Not give a signal to clutch unless all persons are out of and clear of the conveyance.
- Not cause or permit any person to enter or have access to the conveyance until he has
received a signal that clutching operations are complete.
- Take all reasonable measures to safeguard all persons against accident at the place
where he is in charge whether such persons are under his direct supervision or not.
What notices shall be displayed at every winding plant?
(16.92.1) Where a winding plant is used the following shall be kept posted up:
At each winding engine:
- A copy of the permit, and
- The code of signals and any other special signals.
(16.92.2) At each bank, station or landing platform:
- A notice showing clearly the maximum number of persons permitted to ride in each
conveyance
- A notice prohibiting the conveyance of persons where it is not allowed.
- The code of signals and any other special signals.
What shall the speed of the winding engine be when the conveyance is approaching
or passing through the stage or covering provided when men are working at shaft
bottom?
(16.93.1) When any bucket or other means of conveyance is approaching or passing
through the stage or covering the winding engine driver shall control the speed to ensure
that it passes through slowly and safely and that the crosshead is picked up or released
without shock.
Give the condition for stopping at shaft bottom in the course of a shaft being sunk?
(16.93.2) The bucket or other means of conveyance shall not be lowered directly to the
bottom of the shaft if men are there but shall be stopped at least 5m above the bottom and
shall not be lowered further until the signal has been given by one of the sinkers.
Describe the requirements for the guides for conveyances in vertical shafts?
(16.93.3.1) In a vertical shaft:
- Where sets are used to support the guides the guides shall extend down to the lowest set
which shall be not more than 15m from the bottom. When winding is done to the
bottom the crosshead shall travel to the lowest set but one.
- Where the guides are not supported by sets the guides shall extend down to 30m or less
from the bottom. When winding is being done to the bottom the crosshead shall travel
to the end of the guides as far as practicable.
Describe the requirements where a crosshead is used to guide the bucket or other
conveyance?
(16.93.3.2) Every vertical shaft where a crosshead is used to guide the bucket or other
conveyance shall be equipped with:
- A device that prevent the bucket or other conveyance from being lowered below the
bank if it is not accompanied by the crosshead.
- A device that will prevent the bucket or other conveyance and the crosshead from
separating unintentionally anywhere in the shaft or warn the driver of such separation.
State the conditions to be met before any person shall work at the bottom of the
shaft in the course of being sunk?
(16.93.4) No person shall work, be caused or permitted to work at the bottom of the shaft
unless protected by a covering extending over the whole area of the shaft, leaving only
enough space for the passage of a bucket, skip or other means of conveyance. In a
vertical shaft such covering shall be placed not more than 25m from the bottom and in an
incline shaft the covering shall be not more than 30m from the bottom.
When may persons enter the conveyance at the bottom of the shaft in the course of
being sunk?
(16.93.5) No person shall enter the conveyance at the bottom of the shaft until such
conveyance has been raised and lowered or until some other distinct signal has been
received from the winding engine driver.
Explain the signal when blasting is about to take place in a shaft in the course of
being sunk?
(16.93.6) The person in charge of blasting shall notify the driver by a special signal
namely 5 rings when blasting is about to take place and, except when firing by electricity,
the driver shall reply by raising and lowering the conveyance by about 2 m.
A small winding plant, the permit of which does not allow the conveyance of persons
shall not be subjected to certain regulations, provided what?
(16.95.1) Provided that the manager or sub-ordinate manager shall appoint in writing a
competent person to carry out the duties and examinations prescribed in regulation 16.74
and provided further that the engineer or competent person appointed in terms of
regulation 2.13.2 shall appoint in writing a competent person to examine at least once in
each week the items specified in regulation 16.74.1
For a small winding plant not requiring a permit what may be provided in place of
the machinery record book?
(16.95.2) A record book or card index system may be provided in place of the machinery
record book.
What shall the breaking strength of the winding rope be for a winder not requiring
a prescribed permit?
(16.95.3) A winding rope may not be used for a winding plant not requiring a prescribed
permit unless:
- Its breaking strength is at least 10 times the attached load, and
- The part of the winding rope attached to the conveyance or counterweight is cut off and
re-terminated at intervals not exceeding 6 months.
What are the requirements before a chairlift installation may be used?
(16.105) No chairlift installation shall be used for the conveyance of persons unless it is
permitted by a prescribed permit for such installation.
What are the requirements of the regulations where a chairlift is installed in a part
of a mine where a winding plant operates?
(16.106) No chairlift shall be installed in any portion of a mine where a winding plant or
moving machinery operates, unless the persons using and operating the chairlift are
adequately protected from the conveyances, other winding equipment or moving
machinery or unless it is so arranged that simultaneous operation of the chairlift and the
winding plant or machinery is impossible.
What information shall accompany each application for permission to install,
modify and use a chairlift?
(16.108) Each application for permission to install, modify and use shall be accompanied
by:
- Dimensioned drawings in plan, elevation and section to the scale of at least 1 in 100.
- The manufacturer’s or supplier’s specifications of the proposed installation, and
- Full particulars of all ropes and chains intended for use in the installation.
What are the requirements of the construction of a chairlift installation?
(16.111.1) No chairlift shall be used unless it is of good construction, sound material,
adequate strength and free from any defect.
How shall a chairlift be used?
(16.111.2) No chairlift shall be used unless it is so used that the safety of persons is not
endangered.
How shall the axis of its line of operation be?
(16.111.3) No chairlift shall be used unless the axis of its line of operation between
stations is a straight line.
What shall the slope of the hauling rope or traction chain be?
(16.111.4) No chairlift shall be used unless the slope of the loaded hauling rope or
traction chain is less than 45º.
What shall the distance between the center lines of two passing chairs be?
(16.111.5) No chairlift shall be used unless the distance between the center line of two
passing chairs is 900 mm or more.
What shall the distance between a chair and a handrail or sidewall be?
(16.111.5) No chairlift shall be used unless the distance between a chair and a handrail or
sidewall is 500 mm or more.
What shall the clearance be from the center line of a chair to the outside at the
landing and boarding sites?
(16.111.5) No chairlift shall be used unless, at all boarding and landing sites, the
clearance from the center line of the chair to the outside is at least 1.5 m.
What shall the vertical clearance be between the underside of a chair loaded
with a passenger and the terrain below?
(16.111.6) No chairlift shall be used unless the vertical clearance between the underside
of a chair loaded with a passenger and the terrain below is not more than 1.5 m
or not less than 0.3 m.
What shall the minimum spacing of chairs be?
(16.111.7) No chairlift shall be used unless the minimum spacing in meters between two
consecutive chairs are equal to or greater than:
4 × velocity in m/s for single seat carriers or
5 × velocity in m/s for two seat carriers where passengers board and leave simultaneously
or
7 × velocity in m/s for two seat carriers where passengers board and leave one after the
other.
What shall the gradient of the boarding and landing sites be?
(16.111.8) No chairlift shall be used unless the gradient at boarding and landing sites is
not more than 6º.
What shall the length of the boarding and landing sites be?
(16.111.8) No chairlift shall be used unless the length of the boarding and landing sites is:
- 6 m if the installation is designed to convey less than 500 persons/hr, and
- 8 m if the installation is designed to convey 500 or more persons/hr or
- Equal to the minimum spacing of carriers, whichever is the greatest.
What is the maximum speed of operation of a fixed grip chairlift system?
(16.111.9) No fixed grip chairlift system shall be used unless the speed of operation does
not exceed 1.5 m/s.
What is the maximum speed of operation of a detachable grip chairlift system?
(16.111.9) No detachable grip chairlift system shall be used unless the speed of operation
does not exceed 3 m/s.
Describe the requirements of components being a source of danger to passengers?
(16.111.10) No chairlift shall be used unless all components which may be a source of
danger to passengers are out of reach when seated normally on the chair.
Name the four types of carriers allowed in chairlifts?
(16.111.11) No chairlift shall be used unless the type of chairs used are approved by the
principle inspector of mines and are either:
- Chairs with one seat equipped with a footrest.
- Chairs with two seats, providing a seating width of not less than 0.5 m/person and
equipped with suitable footrests.
- Special, easily detachable receptacles attached to the chair or container to permit the
transport of material, or
- Special stretcher carriers used for the transportation of stretcher cases.
What type of rope shall be used on a chairlift and what shall the bending stiffness
comply with?
(16.112) Any rope used on a chairlift shall be made of steel wire and the bending
stiffness of the rope shall be suited to the diameter of the sheaves.
May a chain be used as the traction chain on a chairlift?
(16.112.1) Any chain used as a traction chain on a chairlift shall be manufactured from
a class of steel approved by the chief inspector of mines.
Describe the requirements when a traction chain or rope is used on a chairlift with
the carriers running in or on a rope or rail circuit?
(16.112.3) Where a traction chain or rope is used on a chairlift with the carriers running
on a rope a safety rope clamped to each carrier shall be provided to prevent runback in
the event of the traction chain or rope breaking.
What shall the factor of safety be of the rope or chain used on a chairlift and explain
the discard criteria?
(16.112.4) Any rope or chain forming part of a chairlift installation shall have a factor of
safety of at least 6 calculated on its static load.
(16.112.2) No rope or chain shall be used on a chairlift if the calculated breaking force at
any point is less than nine-tenths of the breaking force when it was new.
Describe the requirements for splices in ropes used with chairlift installations and
when clamps are used?
(16.112.6) Splices in ropes forming part of a chairlift installation shall be made by
experienced persons and the length of such splice shall not be less than 1200 times the
rope diameter. Whenever clamps are used on ropes the clamps used shall be sufficient in
number to ensure an sufficient joint.
How many splices shall be allowed and what shall the distance be between splices?
(16.112.7) Except with the written permission of the principle inspector of mines not
more than two splices shall be allowed along a closed loop formed by a carrying hauling
rope. Where more than one splice is made the distance between splices shall be at least
3000 times the diameter of the rope.
Describe the requirement for the force exerted by a carrying hauling rope on each
supporting roller?
(16.113) The force exerted by a carrying hauling rope on each supporting roller shall be
positive when the system is operating unloaded.
Describe the requirements for the carrier of a chairlift installation and swinging?
(16.114) The carrier of a chairlift installation shall be free to incline itself in the direction
of travel with respect to the vertical by an amount equal to the inclination. Swinging shall
be restricted within practical limits.
Describe the requirements for the passage of the carriers around the sheaves?
(16.115) The passage of the carriers around the sheaves shall not be a source of danger to
passengers who have been unable to alight.
Give the requirements for the driving motor of a chairlift?
(16.116) The driving motor of a chairlift installation shall be:
- Of adequate power to ensure starting the chairlift under the most unfavourable
conditions.
- Stopped automatically when any brake is applied or if any safety device is operated.
- Provided with a reverse phase relay or other protection to prevent the reversal of the
driving motor through inadvertent reversal of the phases.
State the requirements that the brakes of a chairlift installation shall comply with
(16.117.1) Every chairlift installation shall be equipped with two independent brakes, a
main brake and a backup brake, so designed that either brake is capable of holding,
without slipping, the chairlift installation when loaded in such a way that the maximum
static torque is produced on the brake. The provisions of this regulation are applicable
even if the installation is fitted with a special device which will automatically prevent
reverse movement of the carriers.
(16.117.2) Both brakes shall apply automatically when the power supply to the driving
motor is interrupted or if any safety device is operated.
(16.117.3) The main brake of the chairlift shall operate on the driving sheave or on the
shaft of the driving sheave and not on any intermediate shaft.
Explain the regulation regarding the emergency stopping device?
(16.118) An emergency stopping device, which interrupts the power supply to the driving
motor, shall be provided along the full length of the chairlift installation and shall be so
arranged that it can easily be operated by any passenger traveling on the chairlift.
What are the requirements regarding illumination at chairlift installations?
(16.119) Every boarding and landing site as well as the entire length of the chairlift
installation shall be adequately illuminated at all times underground and at night on
surface whenever the chairlift is in use.
Explain the statutory warning system that shall be operational at a chairlift?
(16.120.1) Every chairlift installation shall be equipped with an warning system, audible
along the entire length of the installation, and shall operate automatically before the
chairlift is set in motion, except where some other warning system is installed approved
by the principle inspector of mines.
When is an emergency ladder way required at a chairlift installation and where is it
situated?
(16.120.2) Every place where a chairlift is installed where the inclination exceeds 20º and
where passengers are able to alight anywhere along its length when it is stationary, shall
be provided with a emergency ladder way either separate from the installation or situated
between the carriers.
Describe the duties of the chairlift attendants
(16.120.3) Where the ladder way is between the carriers chairlift attendants responsible
for starting and stopping shall be stationed at each boarding and landing site and they
shall ensure that the chairlift is not set in motion whilst persons are on the ladder way.
When shall a ladder way be supplied with a handrail?
(16.120.4) Where the ladder way is separate from, but next to the chairlift, it shall be
provided with a smooth handrail separating it from the chairlift.
What material may a person carry with him while riding on a chairlift?
(16.121.1) No person shall travel on a chairlift with material other than articles which
will not endanger him or any other person and for which permission has been given by
the manager, mine overseer, engineer or competent person appointed in terms of
regulation 2.13.2
(16.121.2) The manager shall cause a list to be kept at all boarding and landing sites of all
articles for which permission has been granted and he shall ensure that all persons
concerned are made aware of the articles included in the list.
May a person interfere with the equipment of a chairlift?
(16.122) No person traveling on a chairlift or in the vicinity of a chairlift installation shall
interfere with the equipment of the chairlift or any other person traveling on the chairlift
or in the vicinity of the chairlift.
Explain the inspection procedure of a chairlift installation?
(16.123.1) The complete chairlift installation or part thereof shall be examined regularly
by such persons and at such intervals as may be determined by the engineer or competent
person appointed in terms of regulation 2.13.2 considering the duty and frequency of
operation of the installation. The principle inspector of mines may insist on more frequent
inspections or inspections by such other persons as he may deem necessary.
(16.123.2) A written record of each such inspection shall be kept by the person
responsible for the inspection in a book specially provided by the manager.
Code of signals
Signal
1
1
2
3
3
3
Meaning
Raise when engine at rest
Stop when engine in motion
Lower
Persons about to travel
In reply: Persons may continue to travel or may enter the cage
From engine driver when cage is brought to rest at a station: Persons
may leave the cage
2-2
From driver (Clear signal requested): Driver wishes to start winding
engine at his discretion
2-2
To driver (Clear signal): Driver may start the winding engine at his
discretion
2-2-2
From driver: Persons must leave the conveyance
2-2-2
In reply: No persons in conveyance
2-2-2-2
Cancel or repeat signal
3-3-3
Person giving signal about to travel
3-3-3
In reply: acknowledgement by driver that person signaling is about to
travel
4-1
Raise slowly
4-2
Lower slowly
4-4
To driver: Mark signal
4-4-4
To driver: Clutching signal
4-4-4
In reply: Clutching operations completed
5-5
To driver: Explosives about to be placed in conveyance
5-5
In reply: Explosives may be placed in conveyance
5-5
From driver when conveyance containing explosives is brought to
rest at a station, explosives may be removed from the conveyance
5-5-5
To driver: No explosives in the conveyance
5-5-5
In reply: acknowledgement by driver that there are no explosives in
the conveyance
6-6
To driver: Winding compartments served by engine locked
6-6
In reply: Acknowledgement by driver of compartment locked signal
6-6 +station level To driver: Winding compartments served by engine locked below
station designated
6-6 +station level In reply: Acknowledgement by driver of compartments locked below
station designated
6-6-6
To driver: Compartments served by engine re-opened
6-6-6
In reply: Acknowledgement by driver of compartments served by
engine re-opened
6-6-6-6
To driver: Shaft examination and repairs about to take place
6-6-6-6
In reply: Acknowledgement by driver shaft examination and repairs
signal
7
To driver: Persons about to have access to the conveyance for a
purpose other than traveling or the loading or unloading of mineral in
trucks or of material
7
In reply: Person may have access to conveyance for a purpose other
than traveling or the loading or unloading of mineral in trucks or of
material
7-7
To driver: Conveyance is clear of all persons who have had access to
it for a purpose other than traveling or the loading or unloading of
mineral in trucks or of material
7-7
8
8
1
8-8
8-8
15
15
15-2-2
10 + station
signal
1 long ring
In reply: Acknowledgement by driver of persons clear signal
To driver: Raising or lowering of mineral in trucks or of material
about to commence
In reply: Acknowledgement by driver that rising or lowering of
mineral in trucks or of material is about to commence
From driver: Persons may have access to conveyance for the purpose
of loading or unloading mineral or material in trucks
To driver: Raising or lowering of mineral in trucks or of material
completed
In reply: Acknowledgement by driver that raising or lowering of
mineral in trucks or of material is completed
Electrician testing bells
In reply: Acknowledgement of bell testing signal
Electrician has completed test
Accident to person: Station where conveyance are required
Accident to shaft: Winding operations to be suspended immediately
in all compartments of the shaft
Chapter 17
Elevators
What are the requirements before an elevator may be used?
(17.1.1) No elevator shall be used unless a prescribed permit for its use has been issued
by the principle inspector of mines.
What are the requirements before an elevator may be used for the conveyance of
persons?
(17.1.2) No elevator shall be used for the conveyance of persons unless it is permitted by
a prescribed permit for such elevator.
Describe the requirements for the application for a permit?
(17.2.1) The manager of a mine or works who intends to install, use or modify an
elevator shall apply in writing to the principle inspector of mines on the form obtainable
from him.
Give the information that shall accompany the application for an installation of an
elevator?
(17.2.2) The application for the installation and use of an elevator shall be accompanied
by:
- Dimensioned drawings of the machine room in plan and elevation to the scale of at least
1 in 50.
- Dimensioned drawings of the installation in plan and elevation.
- A diagram of all the electrical circuits of the installation.
- The following particulars of the ropes and their connections:
Name of manufacturer:
- Date of manufacture.
- Coil number.
- Length.
- Diameter.
- Mass/m.
Construction of rope:
- Type of lay.
- Number of strands.
- Class of heart.
Construction of strands:
- Number of wires.
- Diameter of wires.
- Class of core.
- Class of steel in wires.
- Tensile strength of steel.
- Breaking force.
- Rope test certificate number and place of test.
- Purpose of use.
- Date put in.
- Dates of recapping, shortening or turning end for end.
- Date taken off.
- Factor of safety (static).
What procedure shall be followed if any permit is lost, defaced or destroyed?
(17.2.5) If any permit is lost, defaced or destroyed the manager shall apply in writing to
the principle inspector of mines for the issue of a duplicate permit. Un-cancelled revenue
stamps of R50 must be attached to the application.
Where shall the permit for the use of the elevator be kept?
(17.2.6) The permit shall be displayed in a glazed and locked or sealed frame in a
conspicuous place inside the car or any other place approved by the principle inspector of
mines.
Who shall supply the manager of an elevator inspection register book and who shall
record the results of such inspections?
(17.3.1) The principle inspector of mines shall supply an inspection register book.
The principle inspector of mines shall record the results of each of his examinations. The
manager shall keep the register in a safe place at the mine.
What procedure shall be followed if the inspection register is lost, defaced or
destroyed?
(17.3.3) If the register is lost, defaced or destroyed the manager shall apply in writing to
the principle inspector of mines for the issue of a duplicate register. Un-cancelled revenue
stamps of R100 must be attached to the application.
Who shall supply an elevator record book?
(17.3.4) The manager.
What shall be entered into the elevator record book?
(17.3.4)
a) The names of the competent persons carrying out the examinations.
b) The following particulars of every winding rope and balancing rope:
- Name of manufacturer.
- Date of manufacture.
- Coil number.
- Length.
- Diameter.
- Mass/m.
Construction of rope:
- Type of lay.
- Number of strands.
- Class of heart.
Construction of strands:
- Number of wires.
- Diameter of wires.
- Class of core.
- Class of steel in wires.
- Tensile strength of steel.
- Breaking force.
- Rope test certificate number and place of test.
- Purpose of use.
- Date put in.
- Dates of recapping, shortening or turning end for end.
- Date taken off.
- Factor of safety (static).
c) A true report of every examination and any repairs or alterations made. The report
shall be signed by the person who carried out the inspection, repairs or alterations.
What particulars shall be marked inside the car?
(17.4.1) The following particulars shall be marked in a conspicuous place inside the car
or in a place the principle inspector of mines may direct:
- The name of the maker.
- The maximum mass of the material or mineral permitted.
- The maximum number of persons permitted.
- The official number allocated to the car.
Describe the requirements where machinery of more than one elevator is installed in
the same room?
(17.4.2) Where machinery of more than one elevator is installed in the same room the
machinery and switchgear of each elevator shall be distinctly and separately marked.
How shall the driving motor of every elevator be marked?
(17.4.3) The driving motor of every elevator shall be marked to indicate the direction of
rotation for upward and downward movement of the car.
Where shall a diagram of the electrical circuit be kept?
(17.4.4) A diagram of all electrical circuits shall be displayed in a suitable frame in the
motor room.
Describe the requirements for the inspections/examinations of elevators?
(17.5.1) The manager, engineer or person appointed in terms of regulation 2.13.2, shall
appoint competent persons to examine:
Once a week:
- The hatchway, guides, ropes and rope attachments.
- The engine or motor.
- The drums and sheaves, and
- All safety appliances.
(17.5.2) The engineer or competent person appointed in terms of regulation 2.13.2 shall
examine carefully:
Once a month:
- The elevator and all its fittings and appliances. At this examination the ropes supporting
the elevator car and counterpoise, and the balance ropes or chains shall be thoroughly
cleaned at selected places to determine the amount of deterioration thereof.
What are the requirements if any weakness or defect is found?
( 17.5.3) If any weakness or defect is found whereby the safety of any person is or may
be endangered the defect shall be reported in writing without delay to the manager or
engineer or person appointed in terms of regulation 2.13.2 and no person shall be
conveyed until such defect has been rectified.
When shall adequate precautions be taken to prevent any person from using an
elevator?
(17.5.4) Adequate precautions shall be taken to prevent any person from using an
elevator:
- While it is being operated from the motor room or
- While examination, servicing or any work is being done in the hatchway.
State the requirements to comply with when a landing door or gate is required to be
open while an elevator is being examined?
(17.5.5) When a landing door or gate is required to be open while an elevator is being
examined, serviced or repaired or while any work is being done in the hatchway, an
effective barrier shall be provided and used to prevent inadvertent access to the hatchway.
Explain the duty of the principle inspector of mines before he intends inspecting an
elevator?
(17.6.1) When the principle inspector of mines intends inspecting an elevator he shall
notify the manager of the date and time of such inspection.
What is the duty of the manager after notification from the principle inspector of
mines of an inspection?
(17.6.2) The manager shall cause all ropes and machinery to be thoroughly cleaned and
prepared for the inspection.
(17.6.3) The manager shall supply free of charge any workmen, tools and other
equipment required.
What shall the manager do if he fails to have an elevator properly prepared for an
inspection by the principle inspector of mines and what is the fine?
(17.6.4) The manager shall apply within 7 days of the date on which the inspection
should have taken place for a new date and time and shall attach revenue stamps to the
value of R250 to his application.
Who shall determine the maximum authorized load of an elevator?
(17.7.1) The principle inspector of mines shall determine the maximum number of
persons and the maximum mass of material or mineral that may be conveyed.
May persons travel in an elevator car while material is being conveyed in such car?
(17.7.2) No person other than the operator or attendant shall travel in an elevator car
while material is being conveyed in such car except with the written permission of the
principle inspector of mines.
May persons travel in an elevator car while mineral is being conveyed in such car?
(17.7.3) No person shall travel in a car while mineral is being conveyed in such car.
May persons travel in an elevator car while material or mineral is being conveyed in
a conveyance attached to such car?
(17.7.4) No person shall travel in any car while material or mineral is being conveyed in a
conveyance attached to such car.
What are the minimum requirements to qualify as an elevator operator?
(17.8.1) Every elevator shall be under the charge of and operated by a competent person
not less than 17 years of age who received training for not less than 6 shifts and who shall
be properly instructed in the dangers to the operation of the elevator.
(17.8.5) The above regulation shall not apply to an automatic elevator controlled by a
push button.
What are the responsibilities of the operator while operating the elevator?
(17.8.2) No person other than the operator shall operate an elevator.
(17.8.3) The operator shall not absent himself from the elevator during the period he is in
charge unless he ensured that it cannot be operated by any unauthorized person.
(17.8.4) The operator shall be responsible for the locking of every door or gate at a
landing before the car is moved from the landing. He shall stop to use the elevator should
any defect be found whereby the safety of persons is endangered.
(17.8.5) The above regulations shall not apply to an automatic elevator controlled by a
push button.
Describe the requirements for a hatchway not enclosed by walls?
(17.9) Access to the hatchway shall be prevented by means of an adequate brattice or grill
to a height of at least 2 m. The space above the hatchway landing door or gate shall be
closed by bratticing or grill work. A space of not more than 40 mm shall be permitted
between any two members of the bratticing or grill work, which shall be maintained in
good order.
With what shall every landing entrance to a hatchway be provided with?
(17.10.1) Every landing entrance to a hatchway shall be provided with a substantial door
or a shutter-type gate at least 1.8 m in height, the inner surface of which, when closed,
shall be flush, as nearly as practicable, with the inside of the hatchway.
May vertical sliding doors be installed at a landing site?
(17.10.2) Vertical sliding doors shall not be fitted at any landing except with the written
permission of the principle inspector of mines.
May a door be provided to a hatchway?
(17.10.3) Except at a landing, no door shall be provided to a hatchway unless permitted
by the principle inspector of mines and only if such door operates a circuit breaker which
prevent the elevator from working while the door is open.
Describe the requirements where a landing door is coupled mechanically to a car
door?
(17.10.4) Where a landing door is coupled mechanically to a car door for opening or
closing a device shall be provided which automatically retracts the door if it is obstructed
in any way. The device shall prevent the force with which the door closes from injuring
any person.
What devices shall be provided at every landing entrance to the hatchway of an
automatic elevator?
(17.11.1) Every landing entrance to the hatchway of a automatic elevator shall be
provided with the following devices, constructed and situated so as to prevent
unauthorized access:
- A mechanical lock which operates with a circuit breaker which prevents the car from
moving until every landing door is closed and locked and no landing door can be
opened unless the car is at that landing.
- An additional circuit breaker that prevents the car from moving until every door is
closed.
(17.11.2) These two circuit breakers shall be in two separate control circuits.
(17.11.3) Where a car door is coupled mechanically to a landing door the second circuit
breaker is not necessary.
What devices shall be provided at every landing entrance to the hatchway of an
elevator controlled by an operator?
(17.11.4) - A mechanical lock which cannot be opened from the outside unless the car is
at rest at the landing.
- A circuit breaker arranged so as to prevent the car from moving until every door is
closed and constructed so as to prevent unauthorized access.
When may the door of an elevator car or the landing door be caused to open before
the car comes to rest at a landing?
(17.11.5) The door of a elevator car or the landing door may be caused to open before the
car comes to rest at a landing if the car is fitted with an automatic leveling device which
operates together with devices causing the doors to open when the car enters the leveling
zone. The leveling zone may not extent more than 400 mm above or below the landing,
the speed of the car in the leveling zone may not exceed 0.2 m/s, an apron of not less than
450 mm must be fitted to the car and where there is beveling it must not be less than 450
mm long.
Describe the requirements for any door or gate opening into the hatchway when not
in use?
(17.11.6) Every door or gate opening into the hatchway shall be kept locked when not in
use.
Describe the requirements for projections in the hatchway
(17.12) - Where a car is fitted with a lattice type gate every projection in the hatchway
shall be made safe by a beveled approach on the hatchway side facing the
opening of the car.
- No bevel shall be less than 70º and the beveled surface shall be covered with a smooth
metal.
Describe the requirements of guides for elevators?
(17.13) - Every car and every counterpoise shall be guided throughout its travel by
guides of substantial construction, securely fastened in the hatchway.
- The hatchway construction, the guides and the means of securing the guides, shall be
able to withstand the application of the safety catches as well as any other force
resulting from the operation of the elevator.
- The bottom of every guide rail shall rest on a secure foundation and shall be fixed
securely in that position.
- The top end of the rail shall not be fixed in the ceiling.
- No wooden guide shall be installed if the speed of the car exceeds 0.5 m/s.
- No cast iron or hollow metal guide shall be installed.
- The counterpoise guides shall be enclosed by bratticing from 300 mm above the floor of
the hatchway to 2 m above the floor of the hatchway except where a compensating rope
is attached to the counterpoise.
Describe the requirements for grating under every sheave?
(17.14) A substantial grating shall be provided with a minimum space of 40 mm between
any two pieces directly under each sheave at the top of the hatchway, unless the sheave is
separated from the hatchway by a floor of adequate strength.
Describe the requirements for buffers in the hatchway of the elevator installation?
(17.15.1) Every hatchway in which the car operates at a speed of up to 1.8 m/s shall be
provided with spring, air or hydraulic buffers.
Every hatchway in which the car operates at a speed exceeding 1.8 m/s shall be provided
with hydraulic buffers. The buffers shall be placed either at the bottom of the hatchway
directly beneath the car and counterpoise or shall be attached to the bottom of the car and
counterpoise.
(17.15.2) Every buffer shall be of substantial construction and the buffers shall be
capable of absorbing the energy of a fully loaded car traveling at a speed at which the
governor is set.
Describe the requirements for access to the bottom of the hatchway?
(17.16.1) Where a door is fitted to give access to the bottom of the hatchway such door
shall operate a circuit breaker preventing the elevator from working while the door is
open.
(17.16.2) Where a door is not provided to give access to the bottom of the hatchway and
the floor is more than 1.5 m from the landing, a permanently metal ladder shall be
provided to give such access.
(17.16.3) One or more manually operated switches, which shall immobilize the elevator,
shall be fitted in the hatchway within easy reach from the bottom landing and the floor of
the hatchway.
Describe the requirements of the hatchway where two elevators are used in one
hatchway?
(17.17) Where two or more cars are used in one hatchway, the bottom of the hatchway
for each elevator shall be separated by a wall to a height of at least 2 m above the floor of
the hatchway.
What are the minimum clearances permitted at the bottom of the hatchway?
(17.18.2) When the car rests on its fully compressed buffer, the car or any equipment
attached thereto shall not come in contact with the floor of the hatchway.
What ancillaries need not be taken into account when determining the lowest point
or projection of the car?
(17.18.1) - Guide shoes.
- Rollers.
- Safety jaw assemblies.
- Aprons.
- Guards.
What is the minimum clearance allowed at the top of the hatchway?
(17.18.4) The car shall be able to travel a distance of 1 m above the top landing without it
or any attachments coming in contact with the hatchway.
If the car operates at a speed exceeding 3 m/s the clearance shall be at least 3 m.
When the car is resting on the fully compressed buffer the counterpoise shall not come
into contact with the hatchway.
Describe the requirements for over-travel devices for elevator installations?
(17.19.1) In every hatchway there shall be provided devices to cut the power to the
elevator when the car reaches 300 mm above the top landing or 300 mm below the
bottom landing.
(17.19.2) Every hoist operating a car shall be provided with an automatic stopping device
to stop the elevator when an over-wind occur.
Describe the requirements for the construction of every counterpoise used in an
elevator installation?
(17.20.1) The sections shall be secured together to prevent it from becoming detached.
The counterpoise shall be situated so that it cannot fall on any part of the elevator or
machinery and it shall operate in guides.
(17.20.2) Where the hatchway doesn’t extent to the lowest floor of the building, and
where the space underneath is accessible, the counterpoise shall be provided with safety
catches and a circuit breaker to cut the power to the elevator when the safety catches
comes into operation.
How shall every car of an elevator installation be constructed?
(17.21.1) Every car shall be of substantial construction, enclosed at all sides which are
not entrances and the top covered with a substantial roof.
(17.21.2) Every car shall be provided with adequate ventilation.
What are the requirements of the doors of an elevator?
(17.22.1) Every car shall be provided with a door which shall operate a circuit breaker so
that the car can not be moved when any door is open.
(17.22.2) No car shall be fitted with a lattice type door without the written permission
from the principle inspector of mines.
(17.22.3) Every door of the car of an automatic elevator shall open and close
automatically, unless it is mechanically coupled to the landing door, and the door shall
not start to close until the landing door is closed. A lattice type door do not need to open
or close automatically.
Describe the requirements for a retiring cam for the car of an automatic elevator?
(17.23) The car of an automatic elevator which serves more than two landings shall be
fitted with a retiring cam so that no manually operated landing door can be opened unless
the car is at rest at the landing.
What shall every elevator car be provided with?
(17.24.1) Every elevator car shall be provided with:
- A button, marked “alarm” inside the car, whereby a siren may be sounded.
- A switch, attached to the suspension beam on top of the car, to enable the car to be
stopped during servicing or inspection.
- An electric light inside the car which shall be kept on when the elevator is available for
use and when it is being serviced.
(17.24.2) Every alarm and light in a elevator car shall be connected to a circuit other than
that of the power supply to the driving machinery.
Describe the requirements for the safety catches for elevator cars?
(17.25.1) Every car suspended by ropes shall be provided with safety catches which shall
be capable of holding in any position the car together with twice the maximum authorized
load.
(17.25.2) The principle inspector of mines may conduct a test of the safety catches under
dynamic conditions but shall only do so when there is no load in the car.
(17.25.3) Where safety catches are operated through shafting every lever and safety catch
shall be keyed or welded to the shafting.
(17.25.4) A switch arranged to automatically stop the power supply to the driving
machinery when the safety catch comes in operation shall be fitted on top of the car in an
accessible position.
(17.25.5) No cam type safety catch shall be fitted where the speed of the car is greater
than 1 m/s.
What shall be provided for every hand starting rope grip?
(17.26) A suitable locking grip shall be provided for every hand starting rope, rod or
chain in any car through which it passes.
Give the requirements for a winding or balance rope used in elevators?
(17.27.1) Every rope from which a car or counterpoise is suspended shall be of steel wire,
of good quality and sound manufacture, free from any visible defect and of adequate
strength.
(17.27.2) The gauge of the wires in the rope shall be suited to the diameter of the sheave
or drum over which the rope passes and the diameter of the sheave or drum shall not be
less than 40 times the diameter of the rope.
(17.27.3) Every car or counterpoise operated by ropes shall be suspended by at least
2 ropes which shall be of equal diameter and strength.
(17.27.4.1) The ropes supporting a car or counterpoise shall not be used when the
breaking force of the ropes has reduced to less than 10 times the effective load,
whichever is the greater of:
- The combined mass of the car, its attachments, the maximum authorized load and any
cable, balance rope or chain or
- The combined mass of the counterpoise, its attachments and any balance rope or chain.
(17.27.5) Before any winding rope or balance rope is used on an elevator, full particulars
of it shall be supplied to the principle inspector of mines.
What value for “g” shall be used in calculations of breaking force for an elevator
rope?
(17.27.4.2) 9.8 m/s²
How shall the breaking force of any new winding rope or balance rope or any such
rope on a new elevator be ascertained?
(17.27.6) The breaking force of any new winding rope or balance rope or any such rope
shall be ascertained by actual test.
What is the minimum number of turns that there shall be where the end of a
winding rope on an elevator is secured to the drum?
(17.28) Where the end of any winding rope is secured to the drum, there shall be at least
3 full turns of rope on the drum when the car or counterpoise has reached its limit.
Describe the requirements for the connections of the winding ropes of elevators?
(17.29.1) Every connection between the winding rope and the car, counterpoise, drum or
the hatchway structure shall be designed to prevent accidental disconnection and shall
have a strength of not less than the breaking strength of the rope.
How shall the end of each rope be attached?
(17.29.1) The end of each rope shall be attached by means of an independent connection
and an appliance shall distribute the load equally between the ropes.
Describe the requirements for every rope which is required to be secured to the
hatchway structure?
(17.29.2) Every winding rope required to be secured to the hatchway structure shall be
anchored to the beams supporting the driving machinery or to suitable rolled steel
sections.
When shall every connection be renewed?
(17.29.3) Every connection of any rope shall be renewed at intervals not exceeding 10
years or whenever the ropes are changed, whichever is the shorter period.
What precautions against rope slip shall be provided?
(17.30) Where a rope is not secured to the drum or sheave, the construction shall be such
that no dangerous slipping of the rope on the drum or sheave shall occur under any
condition.
How shall the overhead driving machinery of an elevator be supported?
(17.31.1) The overhead driving machinery of every elevator shall be supported on beams
constructed of rolled steel or reinforced concrete having sufficient strength to carry the
maximum load and every end shall rest on a pillar of adequate strength.
What shall the driving power of an elevator be capable of?
(17.31.2) The driving machinery shall be secured in position and shall be able to develop
sufficient power to raise at least 115% of the maximum authorized load.
Describe the requirements of the brakes of an elevator car?
(17.32.1) Where the driving machinery is operated by a motor or engine the brake shall
be capable to hold the car at rest in any position when the car is loaded with at least
1.5 times its maximum authorized load.
(17.32.2) The brake shall be automatically applied when the driving machinery is not in
operation or when any stopping or safety device comes into operation.
(17.32.3) The brake of every electrical operated driving machine shall be so arranged that
it cannot be released before power has been applied to the driving machine.
What is the purpose of speed governors?
(17.33.1) Every car suspended by a rope shall be equipped with a speed governor to
operate the safety catches.
(17.33.2) Where any counterpoise is fitted with safety catches a separate speed governor
to operate the safety catches shall be provided.
What are the allowable tripping limits for speed governors?
(17.33.3) Every speed governor for a car shall be set to trip at a speed of not less than
115% and not more than 140% of the permitted speed of the car. Where a speed governor
for a counterpoise is fitted, it shall be set to trip at a speed not greater than 10% of the
speed at which the governor for the car is set to trip.
(17.33.4) Where driving machinery is not governed effectively there shall be provided a
effective speed safety device to control the speed of the machinery.
How shall the electrical installation of every elevator be done?
(17.34.1) Except for trailing cables, the electrical wiring of every elevator car shall be in
conduit or ducting unless suitable sheathed cables are used.
(17.34.2) Except for the lighting circuit, the electrical installation of every elevator shall
be provided with a main switch in the motor room. This switch shall be placed in an
easily accessible position as close to the entrance as practicable.
(17.34.3) The motor of every elevator car shall be provided with a reverse phase relay or
other equivalent protection to prevent the reversal of the driving motor through an
inadvertent reversal of the phases.
State the requirements for an elevator motor room?
(17.35) The motor room of every elevator shall:
- Be of ample size with a clear space of not less than 600 mm on at least three sides of
each machine.
- Be at least 2 m high measured from the floor to the underside of the lowest portion of
the roof structure.
- Contain only equipment which forms part of the elevator installation.
- Not be used as a storeroom for grease, oil and tools or other material.
- Be kept locked unless an inspection is being done or when work in connection with the
elevator is done.
- A key to the lock shall be kept readily available.
Chapter 18
Traction
May a person who has not driven a self propelled mobile machine for 3 months be
authorized to drive it again?
(18.1.7) Whenever a person who has been authorized to drive a self propelled mobile
machine has, for any reason whatsoever, not driven such machine for a period of
180 days or longer, he may be authorized again to drive such machine.
In what position shall a person drive a self propelled mobile machine?
(18.2.1) Except where a self propelled mobile machine is designed to be driven with the
driver standing or walking no person shall drive or be permitted to drive such machine
unless he is positioned properly in a seat provided for the driver.
May a person travel in a self propelled mobile machine attached to a haulage rope?
(18.3.1) No person shall travel in or on any self propelled mobile machine attached to a
haulage rope or vehicle operated by machinery in a haulage way, unless authorized by the
manager, mine overseer, engineer or competent person appointed in terms of regulation
2.13.2
(18.3.2) The manager, mine overseer, engineer or competent person appointed in terms of
regulation 2.13.2 may authorize the regular conveyance in or on a self-propelled mobile
machine, rolling stock or vehicle operated by machinery in a haulage way provided that
such a machine, rolling stock or vehicle has been approved by the principle inspector of
mines.
The provisions of this regulation shall not apply to the conveyance of persons in or on a
conventional motor vehicle and necessary for the working of such self propelled mobile
machine.
What shall the minimum clearance be between a parked machine and any other
moving machine in a haulage?
(18.4.2.3) When any machine, rolling stock or vehicle is parked in or near a haulage way,
the minimum clearance between such parked machine and any moving machine, rolling
stock or vehicle shall be not less than 500 mm.
When may a locomotive or train be run over a level crossing of a road at a speed
greater than 10 k/h?
(18.5.1) No locomotive or train may be run at a speed greater than 10 k/h over a level
crossing of a road unless:
- The level crossing is closed off by gates which are operated manually or automatically
to prevent a vehicle from entering the level crossing when a train is approaching the
level crossing or moving across such level crossing.
- Effective warning devices, activated by any approaching locomotive or train, are
installed to warn any approaching vehicle or person or
- The level crossing is manned at all times.
What are the requirements when a driver of a locomotive intends to cross a road at
a level crossing?
(18.5.2) A person driving or in control of a locomotive or train shall not cross any road at
a level crossing unless he has given sufficient warning to users of the road of his intention
to cross such road.
What must the engineer or person appointed in terms of regulation 2.13.2
reasonable ensure with regard to the braking system of every train being run?
(18.5.3.1) No locomotive or train may be run unless it is equipped with a braking system
capable of safely stopping and holding the locomotive or train under operating
conditions.
(18.5.3.2) The engineer or person appointed in terms of regulation 2.13.2 must ensure
that the breaking system are designed, operated, maintained and tested in accordance with
an appropriate safety standard.
Describe the requirements for any rail track vehicle attached to a rope operated by
a winch or haulage engine?
(18.8.1) On any rail track where any vehicle is attached to a rope operated by a winch or
haulage engine there shall be provided, used and maintained, effective signaling
arrangements whereby distinct signals can be given to the driver of the winch or haulage
engine from all places where vehicles are attached or detached from the rope and from
any other place necessary for the safe conduct of the tramming operations.
Where the traction is operated by gravity and the inclined plane exceeds 50 m in
length, what communicating system shall be provided?
(18.8.2) Where traction is operated by gravity and the incline lay exceeds 50 m some
effective system of communicating distinct signals between the stopping places shall be
provided.
Chapter 20
Machinery: Special safety measures
Who shall be in charge of the operation of or attendance on machinery and under
what conditions?
(20.1.1) A competent shiftsman shall be in charge of the operation of or attendance on
machinery. Unskilled persons working under his direction may be employed on such
operation or attendance provided the shiftsman exercises effective control.
(20.1.2) No person having charge of any machinery which for the safety of life or limb
requires constant supervision shall absent himself or cease to have continual supervision
during the period for which he is in charge unless he is replaced by a competent person.
Any person in charge of such machinery shall not be caused or allowed to work more
than 10 hrs in a 24 hr period, except where ordered by the manager in the case of an
emergency or permission has been granted by the principle inspector of mines.
What are the employee’s duties regarding the trespass within the guards of
machinery and reporting of any danger?
(20.2) No employee, unless his duty absolutely necessitates it, shall trespass within the
safety guards or fences erected under the regulations. In case he notices anything which
might be dangerous to life or limb or to the working of the machinery he shall inform the
person in charge thereof as soon as possible.
What dangerous places shall be fenced off and why?
(20.3.1) Every dangerous place such as an elevated platform, pit or traphole, shall be
fenced off to safeguard any person authorized to work there or be in the vicinity.
(20.3.2) No person shall enter any place where machinery is erected without
authorization.
What shall be done with loose clothing when working near moving machinery?
(20.4) No person engaged in close proximity to moving machinery shall wear or be
permitted to wear loose clothing.
Describe the requirements for all exposed machinery?
(20.5) All exposed machinery which, when in motion, may be dangerous to any person
shall be securely fenced off. Efficient guards shall be provided to such parts of any
machinery as may be a source of danger to any person.
When shall moving machinery be repaired, adjusted, tested, examined, cleaned or
lubricated?
(20.6) The repairing, adjusting, testing, examining, cleaning or lubricating of machinery
in motion shall not be undertaken by any person other than a competent person where
there is a risk of personal injury and then only when it is impracticable to stop the
machinery. Automatic devices for oiling machinery whilst in motion shall be provided
wherever practicable.
What shall be fitted to belt driven machinery for the purpose of stopping and
starting without interfering with the speed of the prime mover?
(20.7.1) Belt-driven machinery, which is necessary to stop and start without interfering
with the speed of the prime mover, shall be permanently fitted with a satisfactory
mechanical appliance for the purpose.
When shall driving belts be shifted or un-shifted?
(20.7.2) No person shall shift or un-shift any driving belt while the machinery is in
motion, with the exception of the customary shifting of light belts on the coned pulleys of
machine tools for the purpose of alteration of the speed.
When may machinery be set in motion?
(20.7.3) No person shall set a machine in motion unless he has taken all reasonable
precautions to ensure that no other person can be injured by the setting in motion thereof.
Quote the regulation for the safeguard of every person employed on machinery?
(20.8) Every reasonable precaution shall be taken in connection with the use of
machinery to ensure that the safety of persons employed on or about such machinery are
not endangered.
What shall the condition of all safety appliances be at a mine or works?
(20.9.1) Every safety appliance at a mine or works shall be properly used and maintained
in good working order.
What shall be done if any apparatus or machinery does not comply with the
provisions of the regulations? (What shall the condition be of all apparatus or
machinery used at a mine or works?)
(20.9.2) The use of any apparatus or machinery which does not comply with the
regulations or the working of any apparatus or machinery which appears to be dangerous
shall be immediately stopped. The apparatus or machinery shall not be used until it
complies with the regulations or such dangerous condition has been rectified.
Describe the safety measures during repairs on machinery?
(20.9.3.1) The person in immediate charge of any work or repairs to machinery shall
ensure that the power supply to such machinery is switched off and locked out or
disconnected in accordance with a code drawn up in writing by the engineer or competent
person appointed in terms of regulation 2.13.2 and that the power supply remains
disconnected or switched off until the work or repairs have been completed.
(20.9.3.2) No person shall conduct maintenance or repair work, and no person shall cause
or permit such work to be done, until all reasonable precautions has been taken to ensure
that the work can be done safely. A machine or part of a machine which may fall on a
person conducting such work or on any other person shall be adequately supported.
(20.10) No apparatus, component or machinery made of light metal shall be used in a
hazardous area unless such apparatus, component or machinery is:
- Protected by means of a housing, sheath, cover or coating (excluding paint), or
- Contained, situated or used, in such a manner that no dangerous condition could result
therefrom.
Chapter 21
Electricity
How shall all electrical apparatus be selected, installed, placed and protected?
(21.1.1.1) All electrical apparatus shall be selected, installed, worked, marked and
maintained in such a manner as not to constitute a hazard and shall be placed and
protected in such a manner that no person can be injured by inadvertent contact with any
live part thereof.
A new substation is being designed for surface electrical distribution. The building
is to be constructed of clay brick and will have metal doors. What will you, as the
engineer in charge, require of the design to ensure that the building meets with the
regulations? (What are the provisions of the regulations with regard to size,
construction, illumination, live parts, doors and fire protection of a place where
electric apparatus is installed?)
(21.1.2) Any place where electrical apparatus is installed and which may constitute a
danger to persons shall be:
- Fenced off or enclosed effectively.
- Provided with notices at all entrances prohibiting unauthorized access and
- Kept closed and locked at all entrances, if unattended by an authorized person to
prevent unauthorized access.
(21.1.3) Any fenced off or enclosed place shall be:
- Of adequate size to provide safe and unobstructed working space.
- Constructed and ventilated in such a manner that the apparatus is kept at a safe
temperature.
- Constructed in such a manner to provide protection against the inlet of water.
- Illuminated in such a manner to prevent any danger to persons and to enable all
equipment to be distinguished clearly and all instruments, labels and notices to be read
clearly while it is live.
- Constructed in such a manner that no live parts are within reach of windows or wall
openings, and
- Designed in such a manner as to provide, in an emergency, an unobstructed outlet from
a door which shall not open inwards and such door shall be provided with notices on
both sides.
When may a cable trench be left open?
(21.2) No cable trench shall be left open, uncovered or unprotected except at a place
where work is being carried out in such trench.
What protection is required on electrical apparatus which may endanger persons as
a result of a fault?
(21.3.1) Electrical apparatus in which a fault may develop which may endanger persons
shall be provided with effective switching, controlling or protective devices which, in the
event of a fault, shall automatically isolate the power supply to such apparatus.
(21.7.3) Where an earth fault give rise to a condition dangerous to persons, adequate
electrical protection shall be provided.
How shall electric switching or controlling apparatus, which is accessible from the
front and the back, be marked?
(21.3.2) The markings shall be on a fixed portion of the front and the back.
What is required where a ring feed or a possibility of back feed exists at any
electrical apparatus?
(21.3.3) Where a ring feed or the possibility of electrical back feed exists at any apparatus
a prominent notice to that effect shall be fixed to such apparatus.
When may a person interfere with electrical apparatus provided for safety or
protection?
(21.4) No person shall interfere with or render ineffective any electrical apparatus
provided for safety or protection unless it is necessary to do so to perform work
associated with such apparatus.
What shall the minimum clearance be in front of any switchboard?
(21.5.1) A switch board shall have a clearance of not less than 1.2 m in the front for
operating and maintenance purposes.
You wish to install an electrical switchboard to which access from the back is
required. What clearances must be allowed?
(21.5.3) Any switchboard to which access is required from the back and which has no
live conductors accessible from the back when the panels enclosing the back are in
position shall have a clearance of at least 0.75 m at the back and such space shall not be
obstructed in any manner.
(21.5.3.1) Any switchboard of which the back is accessible only through an opening in a
wall against which it is placed shall have a clearance at the back which shall be sufficient
for the purpose of electrical insulation between conductors and the wall. The opening in
the wall shall be kept closed and locked to prevent unauthorized entrance.
Describe the requirements for a switchboard which has live conductors accessible
only from the back and has no doors, covers or panels enclosing the back?
(21.5.4) Any switchboard which has live conductors accessible from only the back and
that has no doors, covers or panels enclosing the back shall have a clearance of at least
1.2 m behind it. Such space shall not be obstructed and access to such space shall only be
permitted when the conductors are dead and the access shall only be through doors which
shall be kept closed and locked.
May examination, adjusting, testing or repairs on live electrical apparatus be done?
(21.6.1) No examination, adjustment, testing, repair or other work necessitating the
dangerous approach to or handling of electrical apparatus shall be carried out unless such
apparatus are dead. Where the apparatus must be live for the purpose of examination,
adjustment, testing, repair or other work it may be done by or under the direct supervision
of a competent person.
Who may enter a place where electrical apparatus is installed?
(21.6.2) No person other than an authorized competent person shall enter a place where
electrical apparatus is installed unless all live conductors are insulated or otherwise
protected against contact. An authorized competent person may in an emergency be
assisted by a person acting under the immediate supervision of such authorized
competent person.
What precautions shall be taken when work is to be carried out on electric
apparatus that has been isolated from all sources of supply?
(21.6.3) Whenever work is to be carried out on electric apparatus which has been isolated
from all sources of supply, effective precautions shall be taken by earthing to prevent any
conductor from being made live accidentally while any person is working thereon.
What ladder may be used when working with electricity?
(21.6.4) No metal ladder or ladder with metal stiles may be used for examination, repair
or other work necessitating the dangerous approach to or work on electrical apparatus.
If an accessible metallic portion of an electric plant which does not normally form
part of an electrical circuit may accidentally become live, how must it be protected?
(21.7.1) Any accessible metallic portion which does not normally form part of an
electrical circuit but which may accidentally become live shall be protected by insulating
material or shall be connected to earth by a conductor of adequate cross-sectional area so
as to prevent danger to persons.
State the provisions of the regulations with regard to the following:
1) The cross-sectional area of an earth conductor
(21.7.2) The cross-sectional area of any earthing conductor shall be capable of
withstanding the maximum possible earth fault current.
2) Earth fault protection
(21.7.3) Adequate electrical protection shall be provided where an earth fault may lead to
dangerous conditions to persons.
3) Un-insulated live conductors near a fixed ladder way, landing or walkway.
(21.8.4) No portion of any un-insulated or unprotected live electrical apparatus or
conductor shall be permitted within a horizontal distance of 1.5 m or within a vertical
distance of 3 m from any landing, walkway or permanently fixed ladder way.
Describe the requirements of any lattice type support which carries overhead
conductors?
(21.8.1) Any lattice type support which carries overhead conductors shall be protected
adequately to prevent any unauthorized coming into dangerous proximity to the person
from conductors by climbing up such support: Provided that the principle inspector of
mines may require that a support of any other type shall be protected similarly.
Describe the requirements for the connection of an overhead service line to a line
conductor? (Describe the requirements where any overhead service line passes a
building, structure or any place from which access is possible?)
(21.8.2) Every overhead service line shall be connected to a line conductor at a point of
support only and every portion of such service line which is accessible from a building or
from a ladder leaning against a building shall consist of suitable insulated wire.
What signs are required at places where live overhead power lines cross roads and
where shall these signs be situated?
(21.10.6) Notices and signs indicating the maximum height of any object permitted to
pass beneath a live overhead power line shall be displayed at suitable places not less than
150 m from the point where such objects is likely to pass beneath such line.
Where the maximum height of an object is greater than the permissible height
indicated on any notice or sign, what is the legal procedure for the movement of the
object below the power lines?
(21.10.7) The person in charge of the movement shall stop the movement and inform the
responsible engineer or competent person appointed in terms of regulation 2.13.2 and
such engineer or competent person shall thereafter supervise any movement of such
object.
When may a machine with a movable or extendable boom be used in close proximity
to overhead power lines?
(21.10.8) Any machine with a movable or extendable boom may be operatedin close
proximity to overhead power lines only if:
- The operator of such machine is competent and has been authorized by the engineer or
person appointed in terms of regulation 2.13.2, and
- The clearance between any part of the machine or its load and the overhead powerline
complies with the minimum clearance as specified according to the regulations, or
- The power lines are disconnected and earthed, or
- The power lines are shielded against any contact by any part of the machine or its load.
What are the requirements for any structure supporting a crossing span of an
overhead power line?
(21.11.1) Any structure supporting a crossing span shall be:
- Designed to be able to withstand any load imposed by the breakage of any phase or
earth.
- As far as practicable be located in such a manner that it will not touch the service
crossed when overturned.
- One of the structures supporting a crossing shall be as close as possible to the point of
crossing.
- Where a power line crosses a road the clearance above the ground shall not be less than
4.5 m in the case of a broken phase conductor in a span other than the crossing span.
- A crossing span shall not have any joints.
- When the voltage exceeds 1.1 KV: - Armour rods shall be fitted at the live ends of the
suspension and insulators on at least the first three
structures on both sides of the crossing.
- Duplicate conductors, tied together every 1.5 m,
shall be provided in the crossing span and
supported by duplicate parallel insulators.
- The deviation from a right angled crossing over a communication line shall not be
greater than: - 30º for a 48 KV line or higher.
- 45º for a line less than 48 KV.
Give the minimum clearance allowed when an overhead service main crosses any
bare overhead communication line.
(21.11.2.2) Any overhead service main shall not cross underneath bear communication
lines.
What wind pressure value is assumed a line conductor and structure is subjected
to?
(21.12.2) It is assumed that the line conductor and structure is subjected to a pressure of
700 KPa.
What is the minimum allowable factor of safety of any line conductor?
(21.12.3.1) The factor of safety of any line conductor shall not be less than 2.5 and based
on the rated ultimate tensile strength of the conductor.
What electrical cables shall be protected with armouring?
(21.14.1) Any cable other than a trailing cable, a cable of an intrinsically safe circuit or a
flexible cable for movable electric apparatus shall be protected by armouring if:
- The cable is buried directly in the ground.
- The cable is installed in such a position that mechanical damage may occur.
- There may be risk of igniting gas or other flammable material.
When may a flexible cable or trailing cable be used?
(21.14.2) A flexible cable or trailing cable may only be used in connection with the
operation of:
- Any self propelled mobile machine which requires electric power to operate.
- Movable electric apparatus, or
- Portable electric apparatus.
Describe the requirements of screening and joints regarding flexible and trailing
cables?
(21.14.3) Any flexible cable or trailing cable shall be screened either individually or
collectively and such screens shall be earthed.
(21.14.4) No flexible or trailing cable shall have more than fifteen joint repairs, including
sheath patches, over a length of 200m, and
No joint or patch shall be closer than 5m to another joint or patch, and
No joint or patch shall be closer than 3m to the cable plug or terminal connection at the
machine or apparatus.
What are the requirements of the regulations regarding flexible and trailing cables
used in a hazardous area?
(21.14.3) Any flexible cable or trailing cable used in a hazardous area shall be screened
individually and such screens shall be earthed.
(21.14.6) Any flexible trailing cable used in a hazardous area shall be:
- Provided with a intrinsically safe pilot circuit which will prevent power from being
supplied to the cable unless the earth conductor is in a good working condition, and
- Provided with a means of preventing arcing of contacts of any plug being inserted or
withdrawn, and
- Connected to a supply on which the earth fault current is limited to prevent danger to
persons.
What are the requirements of cable reels on self propelled mobile machines?
(21.14.5) Any cable reel used on a self propelled mobile machine shall be provided with
a device which shall interrupt the power supply before the complete cable is unreeled so
that at least one complete turn of the cable shall remain on the reel unless the machine’s
maximum range of travel is limited to less than permitted by the cable on the reel.
What are the requirements for any installation in a hazardous area?
(21.15) Any cable shall be placed in such a manner that it cannot be damaged.
The engineer shall appoint a competent person who shall carry out:
- At least once a month at intervals not exceeding 45 days a thorough examination and
test for continuity of all electrical apparatus and every earth conductor, transformer
neutral earthing system, armouring or screening, except in cases where a continuous
earth monitoring system has been installed or a equivalent system has been approved by
the principle inspector, and
- An examination and test of all new and re-erected apparatus before it is put into service.
The person carrying out the examination or tests shall record the results in a logbook
which shall be scrutinized and countersigned by the engineer.
What are the requirements of electrical wiring of buildings situated on a mine?
(21.16) At every mine or works all buildings situated therein shall be wired in accordance
with a code of practice approved by the principle inspector of mines.
Briefly describe the procedure to be followed when explosion protected apparatus
are supplied to a coal mine and the engineer wants to ensure that the apparatus
complies with the statutory requirements?
(21.17) - The manager shall identify and record any hazardous area on a plan.
- All electrical apparatus used in a hazardous area shall be explosion
protected and certified as such in a test report by an inspection authority
approved by the chief inspector of mines.
- An identification nr shall be allocated to such equipment.
- The manager shall have a copy of the test report.
- The identification nr shall be clearly marked on the apparatus or on a metal
plate (other than a light metal) and permanently fixed.
- Before use a copy of the test report shall be send by the manager to the
principle inspector of mines who may enforce restrictions and conditions.
What are the manager’s duties in connection with persons operating explosion
protected apparatus?
(21.17.6) The manager shall take all reasonable measures to ensure all persons operating,
running and maintaining explosion protected apparatus are instructed in the specifications
in which the apparatus was tested.
Chapter 22
Boilers
What are the requirements regarding a permit for the use of a boiler?
(22.1.1) No boiler shall be used unless a prescribed permit for its use has been issued by
the principle inspector of mines.
(22.3.1) The manager who intends to use a boiler shall apply in writing to the principle
inspector of mines on the form obtainable from him.
What are the requirements regarding the re-use of a boiler?
(22.1.2) Boilers which has been out of use for 12 months shall not be used again before
permission is obtained from the principle inspector of mines.
What are the requirements of the manufacture, construction, use and maintenance
of boilers?
No boiler shall be used unless:
(22.2.1) It is constructed in accordance with a code of practice approved by the chief
inspector or where the construction of the boiler is approved by the chief inspector.
(22.2.2) It has been manufactured under the supervision of an inspecting authority
approved by the chief inspector.
(22.2.3) It complies with the provisions of the regulations.
(22.2.4) It is maintained in a safe working condition at all times.
What particulars must accompany the application of a new boiler?
(22.3.2) - The manufacturer’s complete specification.
- Dimensioned drawings of the boiler showing details of the plating, riveting and
welding.
- Drawings showing the boiler house, elevation and position of the boiler.
- A certificate issued by an inspecting authority incorporating the following
information: - That the authority is satisfied that the boiler is constructed in
accordance with the specified code.
- Results of physical and chemical tests.
- Details of the heat treatment.
- Details of the hydraulic test, witnessed by the inspecting
authority.
When will the principle inspector of mines issue a permit for the use of a boiler?
(22.4.1) On receipt of the application to erect or use a boiler the principle inspector of
mines:
- May issue a provisional permit subject to the conditions and for the period he may
determine or
- If he is satisfied as a result of inspection and hydraulic test that the boiler is safe to use
and the provisions of the regulations has been complied with, may issue a permit
subject to the conditions he may specify.
When shall the permit cease to be valid?
(22.4.3) The permit shall cease to be valid on transfer of ownership of the boiler or when
the boiler is moved from the site.
Explain the requirements of the boiler inspection register?
(22.5.1) The principle inspector of mines shall provide the manager with a boiler
inspection register for each boiler in which the principle inspector of mines shall record
the result of each of his inspections and hydraulic tests.
Where shall this inspection register be kept?
(22.5.2) The manager shall keep this register in a safe place at the mine or works.
Explain the procedure if any register is lost, defaced or destroyed or if the permit
contained in the register is defaced or destroyed?
(22.5.3) The manager shall apply in writing to the principle inspector of mines for the
issue of a duplicate register and permit.
As the responsible engineer you have to record boiler inspections and examinations
in the logbook. Detail the entries you shall make in the book?
(22.5.4) The manager of a mine or works shall provide a log book for each boiler in
which shall be entered without delay:
- The dates on which such boiler was cleaned, examined or tested.
- The condition of the boiler at this examination or test.
- A full report of any alterations or repairs carried out.
Who shall sign the log book?
(22.5.4) Each entry in the book shall be made and signed by the person who conducted
the examination or test or who performed the alteration or repair and shall be
countersigned by the engineer or competent person appointed in terms of
regulation 2.13.2
If a manager disposes of a boiler, or ceases permanently to use a boiler, what actions
shall he take?
(22.5.5) He shall immediately return the boiler inspection register containing the permit
and the log book to the principle inspector of mines.
Name three places where the maximum authorized pressure at which a boiler may
work shall be indicated?
(22.6.1) Every new boiler shall have stamped on the shell the name of the manufacture,
the factory number, the year of manufacture and the intended maximum working gauge
pressure in KPA.
(22.6.2) Every boiler shall be provided with a soft copper plate, 100 mm × 60 mm by
3 mm thick, which shall be fixed by means of 4 copper rivets, 10 mm in diameter, to the
front of the boiler shell and in a position so that it can be readily seen at all times. The
rivet holes in this plate shall be countersunk so that the rivet heads are flush with the
copper plate. The principle inspector of mines shall stamp on this plate in a clear manner
the official number, the year the boiler was first inspected and the authorized working
gauge pressure.
(22.20.1) The authorized working gauge pressure shall be clearly marked with a red line
on the pressure gauge, graduated to show pressure in terms of KPA.
How shall every boiler be erected?
(22.7.1) Every boiler shall be erected so as to give access to all chambers, flues,
inspection openings and fittings. A clear space of at least 1 m to the nearest wall or
structure must be left around it. This space may be reduced by 150 mm by lagging or
encasement.
(22.7.4) Access to any boiler shall be unobstructed.
When shall the 1 m clearance around the boiler not apply?
(22.7.2) The provision of the 1 m clearance shall not apply to a boiler where masonry is a
part of the boiler.
What shall the minimum distance be between the boiler and the ceiling or roof
structure?
(22.7.3) The highest point of any fitting on top of any boiler shall not be less than 1 m
from the ceiling or the roof structure.
In which position shall a stationary boiler not be used?
(22.7.5) No stationary boiler shall be used in a position other than that in which it was
situated when the permit was issued.
When may a stationary boiler be moved?
(22.7.6) The manager shall notify the principle inspector of mines in writing if he intends
moving a stationary boiler.
Describe the time intervals for the inspections and tests of a boiler and by whom?
(22.8.1) The principle inspector of mines shall inspect and test every boiler before it is
commissioned after it has been installed for the first time or after it has been out of
service for more than one year or when major repairs have been done to it.
The principle inspector of mines may carry out periodic inspections and tests: Provided
he shall notify the manager of the date and time for the intended inspection.
(22.8.14.1) Every boiler under the charge of an engineer shall be inspected and tested by
him at least once a year at intervals not exceeding 15 months. The principle inspector of
mines may require more. The engineer or competent person appointed in terms of
regulation 2.13.2 shall notify the principle inspector of mines at least seven days in
advance of the date and time of the inspection and test.
What shall the inspection of a boiler consist of?
(22.8.14.2) The inspection shall consist of a careful examination of the internal and the
external surface of the boiler and all the fittings and apparatus.
What shall the test of a boiler consist of?
(22.8.14.3) The test shall consist of a pressure test by water to the following prescribed
pressure:
(22.8.10) The hydraulic test pressure for a boiler having an authorized working gauge
pressure not exceeding 500 KPA shall be double the authorized working gauge pressure.
The test pressure for a boiler having an authorized working gauge pressure exceeding
500 KPA shall be 1 and 1/5 times the authorized working gauge pressure plus 400 KPA.
(22.8.11) When the hydraulic test pressure is performed in the presence of the principle
inspector of mines it shall be regarded as satisfactory if the boiler has withstood the test
pressure to his satisfaction.
What are the duties of the manager after receiving notification from the principle
inspector of mines of an intended inspection or test?
(22.8.2) The manager shall cause all parts of the boiler to be cleaned and prepared for
inspection or test in accordance with the instructions.
(22.8.12) The manager shall supply the principle inspector of mines workmen, tools and
any equipment necessary for the inspection or test.
When shall the masonry of a boiler be removed?
(22.8.3) When a inspection or test cannot be properly executed the whole or parts of the
masonry or casing shall be removed when required by the principle inspector of mines.
When may a boiler be encased by masonry or other material?
(22.8.4) No boiler shall be encased by masonry or other material before it has been
inspected and tested by the principle inspector of mines or with his written permission.
What shall be done after the masonry or casing has been removed for either renewal
or repairs to the boiler?
(22.8.5)The masonry or casing shall not be replaced without the written permission of the
principle inspector of mines. The stoppage of work occasioned thereby might provide
sufficient time for an inspection or hydraulic test.
What safety precautions shall be taken when emptying a boiler for inspections?
(22.8.6) When any boiler is opened for cleaning, repairs or any other reason, every
precaution shall be taken to ensure the safety of every person employed on this work or
who may be in the vicinity.
When may a person enter a boiler or flue for inspections, repairs, cleaning or any
other reason?
(22.8.7) No person shall be permitted to enter any boiler or flue unless the person in
charge has satisfied himself that it is safe to do so and that every safety valve or cock
which may be a source of danger is blanked off.
What precautions shall be taken if any valve or cock can not be blanked off?
(22.8.7) It shall be closed and fastened securely by means of a chain and lock. No person
shall interfere with or open any valve or cock which has been fastened and locked.
What type of light shall be used when inspecting or cleaning a boiler?
(22.8.8) Where a portable electric lamp is used during cleaning, repairing or inspection of
any boiler, the operating voltage of such lamp shall not exceed 32 V.
What are the requirements regarding the use of water on hot flue dust?
(22.8.9) No water shall be used on hot flue dust or ash where danger may arise.
What corrective action is required of the manager if he failed to have a boiler
prepared for inspection and test on the date notified?
(22.8.13) The manager shall apply, within seven days, to the principle inspector of mines
for a new date and shall add revenue stamps to the value of R10 to the application.
Who determines the authorized working gauge pressure?
(22.9.1) The authorized working gauge pressure shall be determined by the principle
inspector of mines and the boiler shall not be operated at a higher pressure.
What shall be done when it appears that a boiler can no longer be used with safety
at the authorized working gauge pressure?
(22.9.2) When it appears that a boiler can no longer be used with safety at the authorized
working gauge pressure, the principle inspector of mines may fix a new authorized
pressure at which the boiler may continue to work and he shall mark the new pressure on
the copper plate and the boiler shall not be operated at a higher pressure.
What shall be done when it is found that the condition of a boiler holds immediate
danger?
(22.9.3) When any boiler is found to be in a condition which holds immediate danger the
principle inspector of mines shall order the operation of the boiler to be stopped and the
boiler shall not be used until repairs have been carried out to his satisfaction.
Name the five instances with regard to boilers where the manager has to give
written notification to the principle inspector of mines?
(22.10.1) The manager shall notify the principle inspector of mines in writing when:
- He acquires a boiler.
- A boiler is damaged.
- Important repairs are going to be made to a boiler.
- He ceases permanently to use a boiler.
- He transfers ownership of the boiler.
When shall repairs be done to a boiler?
(22.10.2) No person shall do any important repairs to any boiler without the approval of
the principle inspector of mines.
What is the lowest working level permissible for the liquid of any stationary boiler?
(22.11.1) The lowest working level for the liquid for any stationary boiler shall be at least
75 mm above the highest part of the flues passing round or through the boiler.
What is the lowest working level for the liquid for any portable boiler and any
boiler of a locomotive?
(22.11.1) Such level shall be of sufficient height above the fire line that even with
oscillation of the boiler the highest part of the surface reached by the fire and heated
gasses remains covered by liquid.
When may portions of the steam, vapour or gas space of a boiler be overlapped by
the flues?
(22.11.2) Where it is impossible for plating to become overheated the principle inspector
of mines may approve of portions of the steam, vapour or gas space of a boiler being
overlapped by the flues.
Name the four most important safety devices on a boiler?
- Pressure gauge.
- Safety valves.
- Liquid level indicator.
- Low liquid alarm.
How many liquid level indicators shall there be on a boiler?
(22.11.3.1) Every boiler shall be fitted with at least two glass liquid level indicators with
proper blow through cocks or valves.
When shall one liquid level gauge be sufficient for any boiler?
(22.11.3.4) One liquid level gauge shall be sufficient for any boiler with a total capacity
of less than 100 L.
What may the size of any connecting pipe between a boiler and standpipe be?
(22.11.3.2) Any connecting pipe between the boiler and standpipe or column may be less
than 50 mm in diameter or may be longer than 1 m and may be attached to the boiler
without a cock or valve provided that the arrangement is satisfactory and there is no
difficulty in keeping the passage at the end clear.
What shall every blow-off cock or valve be provided with?
(22.11.3.3) Every blow-off cock or valve shall be provided with a tail pipe to discharge
safely to ensure no person can be injured.
How shall the lowest liquid level be indicated on a boiler?
(22.11.3.5) The fixed lowest liquid level shall be indicated by a conspicuous mark on the
liquid level gauge as well as on the boiler shell or masonry.
What shall every glass type liquid level gauge be provided with?
(22.11.3.6) Every liquid level gauge of the tubular glass type shall be provided with a
guard which shall not obstruct the reading of the gauge.
How shall the liquid level gauge be situated?
(22.11.3.7) Every liquid level gauge shall be situated and illuminated so that the level in
the boiler can be easily read from the floor of the boiler.
When is a liquid level indicator not necessary?
(22.11.3.8) A liquid level gauge is not required of any fuel or electrically heated boiler
where at least two independent means are provided for automatically isolating the source
of heat should there be a deficiency of liquid.
Describe the requirements for the feeding apparatus of a boiler with a capacity of
100 L or more?
(22.12.1) Every boiler with a capacity of 100 L or more shall be provided with two
feeding apparatuses, each of which shall be capable of supplying the liquid feed
requirements. If more than two feeding apparatuses are provided each one shall be
capable of supplying all the feed requirements should any one fail. One of these shall be
either a pump or injector. These feeding apparatuses shall be independent of each other
except that when a separate feed discharge stop valve is fitted to each pump or injector
one feed delivery pipe shall be sufficient. Two or more boilers combined for joint
working shall be considered to be one.
The above provisions shall not apply to a separately-fired super heater.
Describe the requirements for the feeding apparatus of a boiler with a capacity of
less than 100 L?
(22.12.3.1) Every boiler with a capacity of less than 100 L shall be provided with at least
one feeding apparatus.
One feed pump shall be sufficient for any oil, gas or electrically heated boiler where
a means is provided for automatically isolating the source of heat should there be a
deficiency of liquid.
The above provisions shall not apply to a separately-fired super heater.
Describe the requirements when the feed apparatus consists of a steam driven
pump?
(22.12.2) Where the feeding apparatus consist of a steam driven pump, the steam supply
to the pump shall be by means of a separate supply pipe from the boiler. Every such
steam supply pipe shall be provided with a stop valve as close as practicable to the boiler.
Where the source of steam supply to the feeding apparatus can be from more than one
boiler, a non-return valve shall be placed adjacent to the stop valve and between the stop
valve and the feeding apparatus.
The above provisions shall not apply to a separately-fired super heater.
When may one feed apparatus consist of a hand-operated pump?
(22.12.3.3) In any boiler which the authorized gauge pressure (KPA) × evaporative
capacity (kg/h) does not exceed 125 000, one feeding apparatus may consist of a hand
operated pump, provided that it is of adequate capacity to supply the boiler with liquid.
The above provisions shall not apply to a separately-fired super heater.
Describe the requirements for the feeding pipe where it enters the boiler?
(22.12.5) The point where the feeding pipe enters the boiler shall be fitted with a selfacting non-return valve and a stop cock. The stop cock shall be placed between the nonreturn valve and the boiler. Where the feed pipes are duplicated and provided with an
interlocking valve arrangement, the principle inspector of mines may permit the use of a
combined stop and non-return valve on each feed pipe.
What are the requirements where the feed supply of liquid to any boiler is through
an economizer which is not an integral part of the boiler?
(22.13) The economizer flue shall be fitted with a damper and a by-pass flue.
An alternative direct feed from the feeding apparatus shall be provided to the boiler.
What are the requirements for a low liquid alarm?
(22.14.1) Every boiler, other than a economizer and separately fired super heater, shall be
provided with a apparatus that indicates when the liquid level are low.
(22.14.2) Every fuel or electrically heated boiler shall have a low liquid alarm that
isolates the heat when the liquid level is low.
How many safety valves shall a boiler have as a minimum?
(22.15.1) Every boiler shall be provided with at least two reliable safety valves.
How shall each safety valve on a boiler be loaded?
(22.15.1) Each safety valve shall be loaded so that it will open at or below the authorized
working gauge pressure. The aggregate area of opening of the valves for the discharge of
steam, vapour or gas shall be sufficient to prevent the pressure rising in excess of 10%
above the authorized working gauge pressure, should any one of the safety valves fail to
operate.
Where shall the safety valve be attached to a boiler?
(22.15.2) Every safety valve shall be attached as close as possible to the main steam,
vapour or gas space of the boiler.
Every boiler shall be provided with two safety valves. What shall be done with one
of the safety valves?
(22.15.3) At least one of the safety valves shall be locked and shall be accessible only to
the person in control. The locked valve shall have an area not less than the other valve.
The locked valve shall open at a pressure not greater than the other valve.
When will only one safety valve be sufficient on a boiler?
(22.15.4) One safety valve, which shall be locked and which shall be accessible only to
the person in control, shall be sufficient for any:
- Boiler with a total capacity of less than 100 L.
- Economizer and any separately fired super heater which can be shut off from the
boiler, and
- Oil, gas or electrically heated boiler where a means is provided for automatically
isolating the source of heat should the pressure rise above that at which the safety valve
is loaded to open.
Explain the requirements for the construction of safety valves for boilers?
(22.16.1) Every safety valve shall be constructed so that the valve can be freed easily
from its seat at any time and provision shall be made to prevent the valve from flying off
should the spring or lever break or should the load on the valve be removed suddenly by
accident or other cause.
(22.16.2) Every safety valve loaded by a weight or spring acting on a lever shall be
constructed so that the load act only on the extreme end of the lever and such load shall
be secured to the lever. Where a safety valve is loaded directly by a spring, every
compression adjusting screw shall be against a metal stop or washer when the spring is at
the working load compression.
Where shall the main stop valve be situated on every boiler?
(22.17.1) Every boiler shall be provide with a main stop valve at the discharge outlet and
as close as practicable to the boiler.
Describe the requirements when more than one boiler is connected to a common
main?
(22.17.2) If more than one boiler is connected to a common main a self-acting non-return
valve shall be placed between each boiler and the common main.
From where shall steam, vapour or gas required for any purpose other than for the
operation of the boiler auxiliary apparatus be drawn?
(22.17.3) It shall be drawn only through the main stop valve.
As the engineer on a mine you have to inspect a boiler with an authorized working
pressure of 1.6 MPa. You find that one of the safety valves has cracked and has to
be replaced. The only other available valve is a cast iron safety valve. Are you
permitted to fit this valve to the boiler?
(22.18) Every safety valve and every valve at any discharge outlet, its component parts
and its connection to the boiler shall be constructed of a metal approved by the principle
inspector of mines: provided that cast iron shall not be approved for any such valve, its
component parts and its connection to a boiler which has an authorized working gauge
pressure exceeding 1 MPA.
What are the requirements for blow-off cocks and pipes on a boiler?
(22.19.1) Every boiler shall be provided with at least one blow-off cock or valve
connected to the lowest point and constructed from a metal other than cast iron
approved by the principle inspector of mines.
(22.19.3) The pipe shall not be in contact with masonry. It shall be joined by flanges. If
the flange is not solid with the pipe or welded to the pipe, the pipe shall pass through the
flange and shall be riveted over on the inside. Where the authorized working pressure is
in excess of 3 MPA, every flange shall be welded on and the welding shall be stress
relieved.
(22.19.4) Every key for operating a blow-off valve or cock shall be removed after the
valve is closed.
(22.19.5) The discharge from the valves or cocks of two or more boilers shall not lead
into a common pipe.
(22.19.6) The discharge shall be conducted by means of a pipe graded down to a suitable
ventilated tank, drain or sump.
Describe the requirements for the pressure gauge on a boiler?
(22.20.1) Every boiler shall be provided with at least one reliable pressure gauge which
shall be connected to that part of the boiler where the highest vapour pressure occurs. The
dial of the gauge shall be graduated to show pressure in terms of Pascal and the
maximum pressure which the gauge shall be capable of registering shall not be less than
the hydraulic test pressure and not more than double the authorized working gauge
pressure. The authorized working gauge pressure shall be clearly marked with a red line
on the dial of the gauge. The gauge shall be situated and the dial illuminated so that the
working pressure can be read distinctly from the operating floor of the boiler at all times.
(22.20.2) Every pressure gauge shall have a separate direct connection with the boiler.
Where a pressure gauge is connected directly to the shell of the boiler the connection
shall be by means of a u-pipe to keep the gauge tube filled with liquid. The pressure
gauge shall be capable of being shut off from the boiler and the cock shall be in full view.
Describe the connection required for the test gauge of the principle inspector of
mines where the working gauge pressure is 2.8 MPa or less?
(22.21.1) Where the authorized working gauge pressure is 2.8 MPA or less there shall be
provided a cock with a flange 40 mm in diameter and 5 mm thick for the attachment of
the pressure gauge of the principle inspector of mines.
Describe the connection required for the test gauge of the principle inspector of
mines where the working gauge pressure is higher than 2.8 MPA?
(22.21.2) Where the authorized working gauge pressure is higher than 2.8 MPA there
shall be provided a valve or a cock carrying in a vertical position a receiving socket for
the attachment of the test pressure gauge of the principle inspector of mines. The
receiving socket shall be tapped with a 10 mm B.S. thread and shall be fitted with an
easily removable screw plug.
(22.21.3) The above appliances shall be so situated that the test gauge and the boiler
gauge can be read from the same place.
What are the requirements of the access and inspection openings of a boiler?
(22.22.1) Every boiler shall be provided where necessary with sufficient inspection
openings situated so that all internal surfaces and seams may be cleaned and inspected.
The principle inspector of mines shall determine whether the amount and size of the
inspection openings are sufficient.
(22.22.2) Every boiler which is large enough to permit entry shall be provided with at
least one manhole of at least 400 mm × 300 mm for a oval hole and at least 400 mm for a
circular hole.
(22.22.2) Where a boiler is fitted with a removable end or cover plate which is of
sufficient size to permit entry, the boiler shall comply with the regulation.
Chapter 23
Pressure vessels
How shall every pressure vessel be manufactured, constructed and maintained?
(23.1) Every pressure vessel shall be:
- Constructed in accordance with a code of practice approved by the chief inspector or
where the construction of the pressure vessel is approved by the chief inspector.
- Manufactured under the supervision of an inspecting authority approved by the chief
inspector.
- Kept clean and free from oil or other inflammable material, material which may cause
corrosion and material which is liable to chemical reaction.
- Maintained in a safe working condition.
What are the requirements of the certificate of manufacture for a pressure vessel?
(23.2) The manager shall have a certificate issued by the inspection authority in which
the code to which the vessel was manufactured is certified.
Name seven of the particulars required to be displayed on the plate which is fixed to
every pressure vessel?
(23.3) Every pressure vessel shall have a plate, securely fixed to it in a conspicuous place
on the shell, showing the following particulars:
- Name of manufacturer.
- Maker’s number.
- Code of manufacture.
- Country of origin.
- Year of manufacture.
- Maximum safe working gauge pressure in KPA.
- Capacity in m³.
What record shall be kept of all pressure vessel examinations?
(23.4) The manager shall keep a record for each pressure vessel on which shall be entered
the dates on which such vessel was cleaned, examined, repaired and tested. This record
shall be signed by the person in charge of such cleaning, examination, repair and test.
What are the requirements of the access and inspection openings of a pressure
vessel?
(23.5.1) Every pressure vessel shall be provided with one or more inspection openings,
situated so that all internal surfaces and seams may be cleaned and inspected. The
principle inspector of mines shall determine whether the amount and size of the
inspection openings are sufficient.
(23.5.2) Every pressure vessel which is large enough to permit entry shall be provided
with at least one manhole of at least 400 mm × 300 mm for a oval hole and at least
400 mm for a circular hole.
Where there is no danger from internal corrosion no manhole need to be provided.
Describe the requirements of pressure gauges for pressure vessels?
(23.6.1) Every pressure vessel shall be provided with at least one reliable pressure gauge,
which shall show gauge pressure in terms of pascals and the maximum pressure which
the gauge shall be capable of showing, shall not be less than the hydraulic test pressure
and not more than double the safe working gauge pressure of the vessel. Where two or
more pressure vessels with the same maximum safe working gauge pressure are
connected to a common supply main, one pressure gauge fitted directly to the supply
main, situated so that its reading is easily visible from any of the pressure vessels, shall
be sufficient.
(23.6.2) The maximum safe working gauge pressure of the vessel shall be clearly marked
with a red line on the dial of the pressure gauge.
Describe the requirements of safety valves for pressure vessels
(23.7.1) Every pressure vessel shall be provided with at least one safety valve which shall
be:
- Kept locked, sealed or inaccessible to any unauthorized person.
- Set to open at or before the maximum safe working gauge pressure.
- Such as to prevent the pressure rising in excess of 10% above the maximum safe
working gauge pressure.
- Attached to the pressure vessel and shall be incapable of being shut off therefrom,
except where two or more pressure vessels with the same maximum safe working
gauge pressure are connected to a common supply main, one safety valve fitted
directly to the supply main, situated so that it is easily visible from any of the
pressure vessels , shall be sufficient. Where a pressure vessel is capable of being
isolated from such common supply main, the principle inspector of mines may require
the fitting of a fusible plug or rupturing disc to such pressure vessel.
- Constructed of a metal approved by the principle inspector of mines provided that cast
iron shall not be used if the maximum safe working gauge pressure of the pressure
vessel exceeds 1MPA.
- Arranged to discharge by means of a pipe any dangerous or toxic gas, vapour or
liquid so as not to endanger the safety of persons.
What may be done where the use of a safety valve is impracticable due to its
inability to operate under all working conditions?
(23.7.2) Where the use of a safety valve is impracticable due to its inability to operate
under all working conditions the principle inspector of mines may permit or require the
use of a rupturing disc subject to such conditions as he may prescribe.
When may the use of a safety valve be exempted?
(23.7.3) The principle inspector of mines may exempt the fitting of a safety valve on a
steam receiver where the maximum safe working gauge pressure cannot be exceeded.
Explain the difference between a pressure relief device, pressure limiting device and
pressure gauge?
(23.7.1) A pressure relief device is a safety valve attached to the pressure vessel which is
set to open when the pressure rises 10 % above the maximum safe working gauge
pressure.
(23.10.1) A pressure limiting device is a reducing valve attached to the supply pressure to
the vessel to reduce the supply pressure to the maximum safe working gauge pressure of
the vessel.
(23.6.1) A pressure gauge is a gauge fitted to the vessel to show gauge pressure in terms
of pascal.
State the requirements for a drain cock on a pressure vessel?
(23.8) Every pressure vessel in which liquid may collect shall be provided with a suitable
drain at the lowest part of the vessel. The discharge shall be controlled by a cock or valve
and shall be led to a safe place.
Describe the requirements of the liquid level indicators for pressure vessels?
(23.9.1) Every pressure vessel in which the level of the liquid may influence safety shall
be provided with a means for indicating at all times the actual level of the liquid.
(23.9.2) The indicator shall be conspicuously marked on the shell of the vessel to indicate
the safe working limits of the liquid.
(23.9.3) Any glass indicator shall be fitted with a guard which shall not obscure the
reading and shall be constructed to prevent the escape of any poisonous, explosive or
flammable substance should the glass break.
Steam is delivered from a boiler at a gauge pressure of 2 MPA into a pressure vessel
with a safe working gauge pressure of 1500 KPA. What precautions must be taken?
(23.10.1) Every pressure vessel which is fed from a supply, the pressure of which is
higher than the safe working gauge pressure of such vessel shall be provided with:
- A pressure reducing valve to reduce the supply pressure to the maximum safe working
gauge pressure, and
- A safety valve fitted to the low pressure side of the reducing valve and set to release at
the maximum safe working gauge pressure of the vessel to prevent the pressure rising
in excess of 10 % above the maximum safe working gauge pressure.
Describe the requirements for pressure reducing valves and safety valves where two
or more pressure vessels are connected to the same supply?
(23.10.2) One pressure reducing valve and one safety valve shall be sufficient where two
or more pressure vessels with the same working gauge pressure are connected to the same
source of supply.
What are the requirements for door interlocks on pressure vessels?
(23.11) Every pressure vessel which is intended to operate under steam pressure and
which is equipped with a removable or hinged door or cover shall be provided with an
interlock to prevent a rise in pressure inside the vessel before the door or cover is in the
fully closed position and to prevent the release of the door or cover from the locked or
closed position before the pressure inside the vessel has been reduced to atmospheric
pressure.
Describe the time intervals of the inspections and tests on a pressure vessel and by
whom?
(23.12.1) The engineer shall ensure that every pressure vessel is inspected and tested in
accordance with the provisions of the regulations.
(23.12.2) Every pressure vessel in which the product of the designed working gauge
pressure in KPA and the capacity in cubic meters exceeds 10 but does not exceed 30,
shall be inspected and tested before it is used for the first time.
(23.12.3) Every pressure vessel in which the product of the designed working gauge
pressure in KPa and the capacity in cubic meters exceeds 30, shall be:
- Inspected and tested after installation for the first time.
- Inspected and tested after having been out of commission for more than 2
years.
- Inspected and tested after major repairs.
- Inspected at regular intervals of not more than one year.
- Tested at regular intervals of not more than 2 years.
What shall the inspection consist of?
(23.12.4) The inspection shall consist of an examination of the internal and external
surfaces of the vessel and all the fittings and apparatus.
What shall the test consist of?
(23.12.5) The test shall consist of a pressure test by water or, where the use of water is
impracticable, by any other suitable liquid, to a pressure of 1.3 times the maximum safe
working gauge pressure of the vessel.
What may be done if the construction of the vessel prevents a thorough inspection?
(23.12.6) Where the construction of the vessel is such as to prevent a thorough inspection
of all the internal surfaces, such as vessel jackets, the internal inspection may be
substituted by a pressure test.
What may be done if it is impracticable to use a liquid for the pressure test?
(23.12.7) Where it is impracticable to use a liquid for the pressure test, the principle
inspector of mines may permit a test with a non-inflammable gas to a pressure of
1.1 times the maximum safe working gauge pressure of the vessel: provided that an
internal inspection is first done and any conditions he may prescribe are complied with.
What shall be done when it appears that a pressure vessel can no longer be used
with safety at the authorized working gauge pressure?
(23.13.1) When it appears from an examination or test that a pressure vessel can no
longer be used with safety at the authorized working gauge pressure, the principle
inspector of mines may fix a new authorized pressure at which the vessel may continue to
work and he shall require the new reduced pressure to be marked on the plate and the
vessel shall not be used at a higher pressure.
What shall be done when it is found that the condition of a pressure vessel holds
immediate danger?
(23.13.2) When at any time a pressure vessel is found to be in a condition from which
danger may arise, the use of the vessel shall be stopped immediately and it shall not be
used again until it has been repaired.
(23.13.3) No person shall do any important repair to any pressure vessel without the prior
approval of the principle inspector of mines.
Chapter 24
First aid and rescue brigades
Describe the requirements of a first aid room?
(24.1) First aid rooms shall be established at readily accessible, clean and dry places and
shall be clearly marked as such.
Describe the requirements of first aid equipment?
(24.1) First aid equipment shall be provided, maintained and be readily available for use.
What notices shall be posted up at every change house or emergency station?
(24.6) Notices on which simple directions are legibly printed, setting out the approved
procedures for the immediate treatment of cases of gassing, heatstroke, heat exhaustion,
drowning and electric shock shall be posted up in a conspicuous place in every change
house and first-aid room.
What are the requirements of first-aid certificates?
(24.7) Where more than 300 persons are employed every person under the age of
50 years who is in charge of workmen shall within 1 year of engagement be in possession
of a valid first-aid certificate recognized by the chief inspector.
The following persons shall be exempted:
- Manager, sub-ordinate manager, mine surveyor, engineer.
- A person who is the holder of the gold medal of the South African Red
Cross Society.
- A person who is a registered nurse.
Every first-aid certificate shall be renewed at intervals not exceeding 3 years.
What precautions shall be taken when cyanide is used at a mine?
(24.8.1) At every mine or works in the vicinity where cyanide is used there shall be kept
in a conspicuous place and maintained for immediate use a sufficient supply of antidote
for cyanide poisoning.
(24.8.2) Such antidote shall be kept in a box clearly marked as cyanide antidote and
directions for use, in both official languages shall be displayed inside or near the box.
What are the provisions of the regulations regarding rescue brigades (Proto team)?
(24.14.1) One rescue brigade where the total number of persons underground exceeds
100.
Two brigades where the number of persons exceeds 700.
(24.14.2) A rescue brigade shall consist of 5 persons employed at mines, carefully
selected on account of their knowledge of underground work, coolness and endurance.
What are the requirements of the amount of refuge bays and distance apart?
(24.20.2.1) The manager shall see to it that there is a refuge bay or other safe place in a
mine or works within easy reach of workmen and within the limits of protection afforded
by a self rescuing device, in the event of an explosion, fire or other emergency.
Name the requirements for a refuge bay?
- Equipped with means for the supply of air.
- Equipped with sufficient supply of water.
- Equipped with first-aid equipment.
- Sufficient size to accommodate the necessary persons.
- Efficient means of communicating with surface.
- Situated, where possible, in an area free of combustible material.
When and by whom shall a refuge bay be examined?
(24.20.2.3) A refuse bay and other safe place shall be examined at intervals determined
by the manager in consultation with the principle inspector of mines, by persons
appointed in writing by the manager for this purpose.
Chapter 26
Summoning of witnesses
Who may summons a witness whose evidence is required at an enquiry held in
terms of the minerals act?
(26.2) Whenever a summons is served on any person, such service shall be effected
through the court of the magistrate within whose area of jurisdiction such person is
resident or employed, or by a member of the police force, or by another person who has
been authorized by the person issuing the summons.
What is the procedure to be followed in serving a summons?
(26.3) Every summons shall be signed by the chief inspector, principle inspector of
mines, regional mining engineer, or any other person authorized by the chief inspector to
issue it and shall state the time and place at which the witness is to attend.
What is the legal backing for such a summons?
(26.4) Whenever a summons is served on a witness the provisions of the law and
regulations shall mutatis mutandis apply.
Chapter 28
Certificates of competency
Describe the procedure to obtain a certificate of competency?
(28.1.1) The certificate of competency shall be granted by the chief inspector in
accordance with the recommendations of the relevant commission of examiners.
(28.1.2) Any person whishing to obtain a certificate of competency shall make an
application to the relevant commission of examiners.
As an engineer appointed on a mine you will have to attend and participate in
examining of applicants for onsetter’s certificates. Who is responsible for framing of
the syllabi for such examinations?
(28.6) The framing of instructions and rules, including syllabi shall be done in
consultation with the chief inspector. The rules for the conduct of the qualifying
examination shall be determined by the Department of National Education.
Describe the requirements an applicant shall meet and the procedure he shall follow
in order to be accepted as a candidate for the electrical or mechanical engineer’s
certificate of competency examination?
(28.23.1) An applicant shall not be accepted as a candidate for the qualifying examination
for the electrical or mechanical engineer’s certificate of competency unless he has
produced satisfactory evidence to the commission:
- That he has attained the age of 23 years.
- A letter of sobriety and good conduct.
- That he has academic qualifications as required by the department of national
education for the electrical or mechanical engineer’s qualifying examinations.
- At least 9 years of practical experience.
The applicant may be exempted from a maximum of 7 years if he has a degree, diploma
or certificate in mechanical or electrical engineering or when the applicant has done a
trade or undergone a course of training acceptable to the chief inspector.
The 2 years experience shall be additional to any prescribed experience for the degree,
diploma or certificate.
When will a mechanical or electrical engineer’s certificate be issued?
(28.24) A certificate shall not be issued unless a candidate has satisfied the commission
that within the scope of the syllabus for the examination determined by the department of
national education, the candidate has sufficient knowledge of the design, construction,
erection, operation and maintenance of machinery, apparatus and plant, and of the act and
regulations.
Describe the requirements an applicant shall meet and the procedure he shall follow
in order to be accepted as a candidate for the winding engine driver’s certificate of
competency examination?
(28.26.2.1) An applicant shall not be excepted as an candidate for the qualifying
examination for the winding engine driver’s certificate of competency unless he has
produced satisfactory evidence to the commission:
- That he has attained the age of 19 years.
- That he is a moderate user of alcohol.
- Generally of good conduct.
- Fit and proper person to be the holder of a winding engine driver’s certificate.
- Of having had experience acceptable to the commission of not less than 6 months on
reversible winding engines fitted with clutches and depth indicators and operated at a
normal winding speed of more than 2.5 m/s, which shall include at least 50 shifts on ac
winding engines and at least 50 shifts on dc winding engines.
Describe the requirements an applicant shall meet and the procedure he shall follow
in order to be accepted as a candidate for the locomotive driver’s certificate of
competency examination?
(28.30) An applicant shall not be accepted as a candidate for the qualifying examination
for the locomotive driver’s certificate of competency unless he has produced satisfactory
evidence to the commission:
- That he has attained the age of 19 years.
- That he is a moderate user of alcohol.
- Generally of good conduct.
- A fit and proper person to be the holder of such certificate.
- He had at least 6 months training and experience for a steam locomotive.
- He had at least 3 months training and experience for any other locomotive.
What other requirements of the applicant shall be met before a locomotive driver’s
certificate will be issued?
(28.31) A certificate will not be issued unless:
- The commission is satisfied that the site or hearing of the candidate is not defective.
- That he is not subject to any physical or mental defect which could interfere with his
duties.
- That the candidate has, according to the syllabus of the department of national
education sufficient knowledge of the construction and operation of locomotives and
trains and sufficient knowledge of the relevant act and regulations.
Describe the requirements an applicant shall meet and the procedure he shall follow
in order to be accepted as a candidate for the onsetter’s certificate of competency
examination?
(28.47.2) An applicant shall not be accepted as a candidate for the qualifying examination
for the onsetter’s certificate of competency unless he has produced satisfactory evidence
to the commission:
- That he has attained the age of 18 years.
- That he has at least 12 shifts experience acceptable to the principle inspector of mines.
- He submits a statement by the manager under whom he is working at the time of his
application specifying whether the applicant is a moderate user of alcohol and whether
he is a fit and proper person to be the holder of a onsetter’s certificate.
Who shall examine a candidate for an onsetter’s certificate before that candidate
may be issued with a certificate?
(28.47.4) A certificate shall not be issued unless the applicant has been examined by an
officer in the service of the department.
The officer shall be a certified mine manager or a certificated mechanical or electrical
engineer (mines), assisted by two persons, one who has been appointed as manager or
mine overseer and the other appointed as a section engineer.
Chapter 29
Suspension and cancellation of a certificate of competency
Who may suspend or cancel a certificate of competency?
(29.1.1) The chief inspector of mines.
What certificates may be suspended or cancelled by the chief inspector of mines?
(29.1.1) Mine manager, mine surveyor, mine assayer, mine overseer, mechanical or
electrical engineer’s certificate.
Under what conditions may the chief inspector of mines suspend or cancel the
certificate?
(29.1.1) If the chief inspector of mines is from information laid before him of the opinion
that the holder of such certificate:
- Has been guilty of gross negligence.
- Misconduct.
- Non-compliance with the regulations or
- If such certificate is being fraudulently or improperly used.
What other certificates may be suspended or cancelled and by whom?
(29.2.1) If at any time a winding engine driver, locomotive driver, stationary-engine
driver or boiler attendant is, in the opinion of the principle inspector of mines, guilty of
misconduct or gross negligence or suffers from any infirmity likely to be detrimental to
the efficient discharge of his duties, such principle inspector of mines may suspend such
certificate or recommend to the chief inspector of mines for suspension or cancellation.
Chapter 30
Underwater mining and prospecting
Who may perform diving work?
(30.2.1) No person other than a diver shall perform diving work or participate in any
diving operation.
When shall a diving supervisor be appointed?
(30.3.1) The manager shall appoint, in writing, a diving supervisor to exercise effective
control over all diving operations, provided that the appointment of such supervisor shall
not be taken to relieve the manager of any personal responsibility.
Under what conditions may a manager employ a learner diver?
(30.3.2) The manager shall not employ a learner diver and all training will be done with
an organization approved for diver training.
Describe the requirements of the diver’s logbook?
(30.4.4) Every diver shall be in possession of a diver’s logbook and at the end of every
day or shift he shall enter full particulars of the diving operations performed by him, sign
the entry and have it countersigned by the supervisor.
Describe the requirements before any person may use diving machinery and
equipment?
(30.7) No person shall use or permit to be used any diving machinery or equipment
unless:
- It has been examined and tested by the manufacturer before its initial use and the
manager is in possession of the required certificate.
- It has been examined and tested at least every month by a competent person which has
found the equipment to be in good working order and has entered the report into a logbook.
If the equipment has not been used for more than a month the competent person
must first examine and test it and ascertain that it is still in good condition and
record his findings in the log-book.
Describe the requirements before any air compressor, air pump, air container or air
pipe for the supply of air for diving operations may be used?
(30.8) No person shall use or permit to be used any air compressor, air pump, air
container or air pipe for the supply of air unless it has been examined and tested by the
diving supervisor within 24 hrs to ensure that it is in all aspects sufficient. All reasonable
measures shall be taken to ensure the purity of the air supply to a diver.
Chapter 31
Offshore installations
When and by whom is a certificate of fitness for an offshore installation issued?
(31.3.1) The chief inspector may approve any certifying authority to conduct or cause to
be conducted surveys and assessments.
(31.3.2) A certifying authority may, if it is satisfied that it is proper to do so, issue a
certificate of fitness, certifying that the offshore installation concerned is fit to be
established or stationed in the said waters.
What information is contained in a certificate of fitness for an offshore installation?
(31.3.3) An certificate of fitness for an offshore installation shall contain:
- The name of the certifying authority.
- Identification nr.
- Name or emblem of the offshore installation.
- Description of the offshore installation.
- Declaration that installation is fit to be established.
- Period for which the certificate is valid.
- Special conditions of validity.
- The date of issue.
- The name and signature of the person designated to sign on behalf of the certifying
authority
What action shall a certifying authority take if an offshore installation has become
unsafe?
(31.8) The certifying authority shall revoke the certificate of fitness and notify the
principle inspector of mines by the quickest means available, supplying him with the
reasons and a copy must be send to the owner.