Owner:
Owner’s Engineer
EPC
Designer
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Package:
Red Sea Project-PRIMARY POWER NETWORK
FOR APPROVAL
00
REV
Title:
Issue for
Ren
approval
Cheng
DESCRI
PREPA
PTION
RED
Li Shihai
Jia Qi
Yang Bo
Pan Kaitian
CHECKED
CHECKED
CHECKED
CHECKED
Zhang
2021-0
Pengyin
5-17
APPROVED
DATE
METHOD STATEMENT FOR 110kV TRANSFORMER INSTALLATION
DOCUMENT No.:R13-013B01-TJS-MTS-EL-0013
Rev
00
This document is property of EPC Company. Its total or partial reproduction is strictly forbidden by any means, as well as its distribution to third parties without the express written
consent. Any copy of this document in digital or paper support will be considered a not control copy. The only valid copy is the last one approved located in the document manager
system
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
2 / 26
Revision Record
Version
Date
Section
Page
Description of Modification and basis
00
2021-05-17
All
All
First submission
PROJECT:
Owner:
Red Sea Utility Assets and Infrastructure Project
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
3 / 26
Table of content
1. INTRODUCTION...................................................................................................... 4
2. SCOPE........................................................................................................................ 6
3. DOCUMENT CONTROL.......................................................................................... 6
4. RESPONSIBILITIES................................................................................................. 6
5. OPERATION CONDITION.......................................................................................7
6. REFERENCE..............................................................................................................8
7. WORK PROCEDURE................................................................................................9
8. QUALITY CONTROL.............................................................................................13
9. HSE........................................................................................................................... 16
10. ATTACHMENT..................................................................................................... 17
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
4 / 26
1. INTRODUCTION
In order to standardize the construction safety risk assessment and process control, this work
instruction is specially prepared to ensure the safety and quality of the whole construction process
and serve as the basis for the continuous improvement of the quality, environmental and
occupational safety and health management system.
The aim of this document is to list the construction phases of 110kV Transformer installation.
In order to make the construction process clear and to ensure that the work is performed in line with
the project specifications and design drawings.
2. SCOPE
The scope of this procedure is applicable to all operations of 110kV Transformer installation
for the Red Sea Utility Assets and Infrastructure Project. Specification types and quantities of
regional transformers for 110kV substations are as follows:
SS-SF1:110(+8×1.25%,-8×1.25%)/33kV, 80/100MVA, ONAF, 3phase, 60Hz, YN,d11, OLTC,
Ud=16% (2SET)
SS-SF2:110(+8×1.25%,-8×1.25%)/33kV, 128/160MVA, ONAF, 3phase, 60Hz, YN,d11,
OLTC, Ud=16% (2SET)
SS-1:110(+8×1.25%,-8×1.25%)/33kV, 80/100MVA, ONAF, 3phase, 60Hz, YN,d11, OLTC,
Ud=16% (2SET)
SS-A:110(+8×1.25%,-8×1.25%)/33kV, 16/20MVA, ONAF, 3phase, 60Hz, YN,d11, OLTC,
Ud=16% (2SET)
SS-7-10:110(+8×1.25%,-8×1.25%)/33kV, 64/80MVA, ONAF, 3phase, 60Hz, YN,d11, OLTC,
Ud=16% (2SET)
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
5 / 26
3. DOCUMENT CONTROL
This method statement is a controlled document as required by the system procedure Quality
Management System Manual and issued in accordance with the procedure Control of Documents
and Data. Revisions of this document will be issued when the main text changes or when an
appendix is added. All the necessary measures and precautions will be taken so that the above
operations comply with the site regulations and procedures as described in the Project Health,
Safety and Environmental Manual. The following HSE practices and procedures from the above
document will be applicable for this Method Statement. Revised appendices for substitution will be
issued separately and where appropriate will include a separate schedule of contents.
4. RESPONSIBILITIES
4.1 Site Engineer
Distribute the responsibilities to construction team.
With the safety engineer to make sure that works are carried out in safe environment.
Monitoring the work progress according to work plan and send report to his superiors.
Ensures that the safety requirements are observed by his subordinates and testing equipment
and tools are in safe condition.
Ensures that work proceeds in accordance with the Site Quality Management plan.
According to the technical specification, design drawings and the electrical conditions, compile
construction scheme in advance and organize construction; supervise and guide the whole process.
4.2 Electrical testing Engineer
Ensuring all testing & commissioning activities are undertaken as per approved procedures and
also ensure that all necessary resources are available to meet the schedule.
Supervise and guide in the whole process; Submission and archiving files after the construction
is completed.
Coordination with safety engineers to ensure that all activities are carried out in a safe working
atmosphere.
Coordination with the QA/QC engineer to carry out related inspection.
4.3 Supervisor
Tool box meetings will be given prior to commencing the work.
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
6 / 26
Incorporate all QA/QC and safety requirements as requested by the concerned engineer.
Organizing tools and equipment required at work site.
Meeting with any type of unforeseen incident or requirements and reporting the same to site
engineer.
4.4 QA/QC Engineer
Assurance of approval method are being used and conformance of the specification.
The primary focal point for all project QA/QC matters.
The review of project ITP is conforming to the corporate requirements, previous audit results
and the nonconformance reports.
Carry out surveillance detailed on project ITPs as nominated by the project team.
Site inspections and surveillance is in accordance with relevant standard and assurance of
quality of work as per project specification.
4.5 HSE Engineer
Ensure that work permits are obtained before starting any work.
Check and confirm compliance to safety requirements, such as wearing Personal Protective
Equipment (PPE).
Check work area for any unsafe conditions. Liaise with the Field Supervisors ensuring that
work is carried out in accordance with Project Safety Plan / Procedure.
5. OPERATION CONDITION
5.1 Construction Personnel
Site Engineer
Electrical testing Engineer
Supervisor
QA/QC Engineer
HSE Engineer
Crane driver
Lifting Supervisor
Certified and experienced Installation Supervisor from Manufacturer Authorised Specialist
Electrical Technician
Forman
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
7 / 26
Labor
5.2 Machinery /Equipment and tools
The following necessary construction equipment / instrument, tools shall be used to carry out
the 110kV transformer installation work.
Crane
Trailer
Oil filter machine
Vacuum pump
Drying machine
Mobile Elevating Working Platform
Sling / hoisting belts
Oil tank
Calibrated Torque wrench
Tool box
Scaffolding
Safety Harness
Safety tools
Holding and Centering tool for horizontal bar
Gasket/Flange holding clamp
Centering Pins for flange
Set of spanners
Crimping tools, wire dressing tool
Dust mask
Fire extinguisher
Vacuum cleaners & welding machines
Special tools list recommended by manufacturer
Tools for circuit breaker-Set of free wheeling ratchet with hexagon socket
Tools for earthing switch-Set of hand crank with extension rod
Anhydrous Ethanol
Dishcloth
oil pipe
Fire fighting sand
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
6. REFERENCE

Issued for Design Drawings.

Approved Shop Drawings.

Project Quality Plan.

ITPs, Inspection Requests and Checklists.

Project HSE Plan.

Risk Matrix

Technical Specification

IEC 60076: Power Transformers

IEC 60137: Insulated Bushings for Alternating Voltages above 1000V

IEC 60076-7: Loading Guide for Oil-Immersed Power Transformers

NEMA TR-1: Transformers, Regulators and Reactors

IEC 60076-18: Power Transformers Part 18: Measurement of Frequency Response

SASO/SSA 422: Power Transformers

54-TMSS-01: Mineral Insulating Oil for Electrical Apparatus

50-TMSS-01: Current Transformer (CT) up to 380kV

53-TMSS-03: Online Gas Analyzer

31-TMSS-06: Terminal Blocks

IEEE C57.12.00: General Requirements for Liquid-Immersed Distribution, Power and
Regulating Transformers

IEEE C57.12.70: Terminal Markings and Connections for Distribution and Power
Transformers
8 / 26
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
7. WORK PROCEDURE
7.1 Installation flowchart：
Rev:
00
Page
9 / 26
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
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7.2 Transformer and accessories inspecting:
All the accessories and equipment arrived at the site shall be subjected to receiving inspection
prior to installation.
Inspect equipment for any damage that may have occurred during shipment or storage.
Transformer nitrogen transport, the tank should be positive pressure, the pressure should be
0.01-0.03MPa.
Verify that there is no indication of external damage, and no obvious dents or scratches in
doors, radiators and fin, or termination compartments.
Verify that there is no evidence of insulating liquid leakage on transformer surface, at welding
seam, on high or low bushing parts, and at transformer base.
Compare transformers and accessories received with the bill of materials to verify that the
shipment is complete. Verify that transformers and accessories conform with manufacturer’s shop
drawings. If the shipment is not complete or does not comply with project requirements, notify the
manufacturer in writing immediately.
Open termination compartment doors and inspect components for damage or displaced parts
loose or broken connections, cracked or chipped insulators, bent mounting flanges, dirt or foreign
material and water or moisture.
Test reports and manuals of transformer oil are complete.
7.3 Installation of principal part:
Handle transformer carefully, in accordance with manufacturer recommendations to avoid
damage to the enclosure, termination compartment, base, frame, tank, and internal component.
Avoid subjecting transformers to impact, jolting, jarring, rough handling, etc.
Use the manufacturer recommended points for lifting, jacking, and pulling transformers.
Use nylon straps of the same length to balance and distribute weight when handling
transformers with a crane.
Ensure that people are kept a safe distance from transformers while lifting and handling.
7.4 Nitrogen Drain
The nitrogen discharge port is installed in the air flow place, and the vacuum is pumped with a
vacuum pump.
Open the two ventilation holes of the transformer, so that the nitrogen and air convection in the
body discharge nitrogen, the body contains up to 18% oxygen can enter the body for inspection.
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
11 / 26
The body inspection process to 0.7~3m3/min flow into the transformer into the dry air, to
prevent the body damp.
7.5 Treatment of insulation oil
Manufacturers of oil should be data complete and have the full analysis report, the scene only
to simplify the analysis, it must be full sampling analysis.
If the sample is unqualified, filter oil processing must be conducted.
Using the vacuum filters oil machine to filter oil, until the sample is qualified.
Open the tank of valve at the top, the oil pipeline is connected to the transformer on the bottom
of the valve, open the vacuum filter oil machine, will fill the insulation oil into the tank, nitrogen
will be discharged from top.
Turn off the valve of the fuel tank bottom and top, remove the oil filling pipe.
7.6 Machine Inspection
All bolts are tight.
Core of transformer without deformation should only point grounding.
Winding insulation is complete, no defects.
Measure the insulation of the winding resistance.
Check each part of transformer principal.
Check the valves open and close should be flexible, instruction is correct.
7.7 Installation of Transformer accessories
7.7.1 Sealing Treatment
Each flange surface has a steel number, installation according to the steel number.
All flange joints shall be sealed with an oil-resistant sealant pad. wipe the sealant pad clean
before installation, and the installation position shall be accurate.
7.7.2 Installation of elevatedseat
Before installation, check that the outgoing terminal board of the CT is well insulated and
conduct CT test.
During installation, the nameplate of the current transformer should be positioned to the outside
of the oil tank, and the vent plug should be placed at the highest point of the lifting seat.
The center of the current transformer and the elevating seat are consistent.
7.7.3 Bushing Installation
Prior to start of bushing installation, bushing shall be checked thoroughly for any damage or oil
leakage. Oil leakage observed if any, shall be suitably cleaned.
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
12 / 26
Lift the bushing to inclined position with reference to the vertical. The angle of inclination shall
match the angle of position to which the bushing is to be erected.
Care shall be taken to avoid dragging of bushing on the floor, while lifting from its horizontal
position to vertical inclined position.
After lifting to vertical position, check for the required oil level.
Open the blanking plates and take out the winding leads.
7.7.4 Radiator Installation
Radiator Panels and flange mating surfaces shall be inspected for shipping damage.
Ensure that the valves on tank flanges are in a closed position.
Remove blank shipping plates on radiator flanges and inspect for moisture or contamination
inside radiator headers. If the radiators are contaminated, flushing will be necessary.
Lift the radiator by means of single lifting eye at the top and install the radiators in place.
After all radiators are installed, the unit should be re-evacuated and topped off to the cold oil
level.
The fan installation and wiring connection shall be checked and confirmed as per manufacturer
drawings / design drawing.
7.8 Vacuum processing and vacuum fill in oil
The vacuum should be carried out on a sunny day. During the first 1 h of the vacuum, when
0.02 Mpa is pumped into the tank, there is no abnormal condition, and the average increase of
0.0067 Mpa to 0.101 Mpa per hour is continued, and the holding time is not less than 24 h.
Vacuum oil injections should be carried out on sunny days.
The whole process of oil injection should be vacuumed, the oil temperature should be higher
than the oil temperature. Fuel injection speed should not exceed 100 L/min. Vacuum injection
time >6 h, the gap between the oil injection surface and the top of the tank shall not be less than 200
mm.
7.9 The overall sealing test and resting
Transformer static time is 24 hours, no leakage detection.
After static, from transformer, lift seat, cooling device, gas relay and pressure release device to
discharge the residual gas, adjust the position of oil level to the corresponding ambient temperature.
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
13 / 26
8. QUALITY CONTROL
8.1 After the arrival of the cable, carefully check the cables against the technical specification
to see if they meet the design requirements.
8.2 In-depth on-site inspections, timely stop illegal operations, strengthen process control,
process rectification, and reduce rework afterwards. And ensure the following process in control.
8.3 The Quality Department shall ensure that all Electrical Works are conducted in accordance
with the approved Field Quality Plan, Project specifications, drawings and prevailing engineering
standards implemented at site.
8.4 Upon completion of construction, electrical engineer in coordination with QC shall submit
RFI to owner to perform all required inspections to assure that all requirements are met and
approved.
8.5 The Electrical QC Inspector shall carry out Planned Inspections, Surveillance Inspections
and release hold points by signing various Quality Records as proof of Inspection conforming to
Specifications.
8.6 Any comments found during the inspection should be recorded.
9. HSE
9.1 Construction HSE Risk Control Plan
Hazard and Risk assessments of this Method Statement will in the form of Risk assessment
attachment. These are reviewed by the HSE department & Construction department to ensure that
all hazards have been identified and adequate control measures are in place.
9.2 Personal Protective Equipment (PPE)

Safety helmet

Safety shoe

High visibility jacket

Goggles
9.3 Safety precautions
Barricade the work area.
All safety precautionary signboards must be visibly posted.
Ensure that only authorized personnel are within the working area.
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
14 / 26
The Supervisor shall initiate daily toolbox meeting to educate his work crew on safety hazards
involved in their work and the preventive measures that shall be undertaken.
All required equipment / tools shall be checked before the start of work for its suitability and
integrity.
All safety precautions shall be followed as per approved safety plan & procedure. Ensure all
involved people are aware of the same.
Safety Officer to ensure that all working flat forms shall be safe and in good condition.
Tradesman shall ensure that before leaving their working places, it must be clean, tidy and free
from rubbish.
Required equipment tools shall be checked before the start of work for suitability and integrity.
Any unsafe condition or practice at site during the execution shall be reported.
Ensure that proper communication system established for the exchange of instructions and
essential supervisors to be provided with the list of emergency numbers.
Ensure that site permit box includes permit, risk assessment, method statement and toolbox
talk.
9.4 Environmental requirements
Dust suppression will be done by water tankers on access roads during movement of heavy
vehicle traffic (carting by tippers).
Sewage will be collected in septic tanks and disposed off in bowser tanks.
Take measures to ensure that the surface of the designated area is not contaminated as a result
of hydrocarbon leaks from any machinery or vehicles.
9.5 Waste management
Waste produced at site should be collected. Check should be kept so as to ensure that
contaminated waste materials are safely disposed of.
All wastes must be placed as per the classification and handled centrally, and the flammable
waste must be recovered timely.
The constructors shall adhere to civilized construction, living up to the following: the person
cleans who is in charge of it, cleaning is made the moment it is completed, and the site is cleaned
after the project is completed and the materials are used up.
9.6 Training & Competence
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
Rev:
00
Page
15 / 26
We shall conduct Safety and environmental induction of all staff and workers highlighting the
work activities and its safety measures to be followed at site. Equipment operators will have third
party competency to operate the equipment.
All tools and equipments shall be in safe condition and fit for it purpose. At the start of each
shift, equipment shall be visually checked for mechanical and structural soundness. All equipments
shall be carefully examined and all hoses and couplings checked for leaks and general conditions.
9.8 Working in the holiday or at night
Work with the PTW during the holiday or at night, and incorporate requirements of
“ TRS-HS-COS-0015- Extended Hours Night Work and Holiday Work Control ” . Monitor the
noise level of project boundary and adjust work task to reduce disturbance on local communities on
holidays and night.
9.9 Emergency procedures
The on-site construction area shall be led by the safety director of HSE department, an
emergency command group shall be set up, a medical duty room shall be set up in the management
office area of the construction area, and an emergency concentration point of construction personnel
shall be set up in the construction area.
In case of the site personnel detecting an emergency situation(medical case, fire, sever weather,
flooding, traffic accident, COVID-19 etc.) must inform the site safety officer and Emergency
Coordinator.
If necessary, Emergency Coordinator informs others to evacuate to nearest assembly point.
Emergency Coordinator reports to the Emergency Committee Manager.
A roll call shall be taken, and every person is accounted for, awaiting further instructions.
Emergency Coordinator will assess the situation and ensure that the necessary steps and
arrangements have been made.
The medical staff of the infirmary should deal with or rescue the wounded according to the
situation. If they need to go to the hospital for rescue, they should call the ambulance team
immediately.
Inspect the site of the accident and all evidence to be preserved.
Full accident investigation to commence immediately after the emergency response and
implement an action plan.
PROJECT:
Red Sea Utility Assets and Infrastructure Project
Owner:
EPC Contractor
Document number:
R13-013B01-TJS-MTS-EL-0013
Document Title:
METHOD STATEMENT FOR
110kV TRANSFORMER
INSTALLATION
10. ATTACHMENT

Appendix A: Risk Assessment
Rev:
00
Page
16 / 26
RISK / IMPACT ASSESSMENT
CONTROL SHEET
Appendix A: Risk Assessment
Contract No.
Project Title
RA Reference
RA Date
RA Revision No.
Task / Activity
Red Sea Utility Assets and Infrastructure
Project
METHOD STATEMENT FOR 110kV
TRANSFORMER INSTALLATION
2021.05.17
A0
Engineering
SEVERITY RATING:
MATRIX
Please Note
If the severity rating lies between 4 to 25, then corrective actions needs
to be taken by concerned persons with documentary evidence provided
in conjunction with WI HSE 001B and 001C
People/Equipment/Production
Health Safety Loss & Environmental Impact
Probability (P)
Environmental
Severity (S)
OH&S
1-3 Acceptable
Low – L
Minor / <3 Days Injury
Minor
4-9
Medium – M
Moderate / >3 Days Injury
Moderate
High – H
Major / Permanent Disability Injury
Major
20-25 Immediate
Very High - VH
Catastrophic / Fatality
Catastrophic
Working group
Designation
Before task commences
10-16
Before task commences
Fill in & enclosed herewith WI HSE 001B
Note: *Mandatory
1
2
3
4
1
1
2
3
4
5
2
2
4
6
8
10
3
3
6
9
12
15
4
4
8
12
16
20
5
5
10
15
20
25
Unlikely
May Happen
Likely
Very Likely
Certain or Imminent
and 001C
Verified by:
Project Manager:
Signature:________________Date
Approved by:
Client
Name:_________________Signature:_______________Date:
Project Manager
Consultant Approval:
Signature:________________Date:
Safety Officer:
Signature:________________Date:
Name:_________________Signature:_______________Date:
-
5
DISTRIBUTION:
Page 1 of 9
Original to: Site HSE File
/
/
/
/
Copy to: HSE Department
RISK / IMPACT ASSESSMENT
CONTROL SHEET
110kV TRANSFORMER INSTALLATION
Task:
Risk Assessment Date
Rating (see
SN
Activity
Description
Hazard /Aspect
Type
(R/NR)
1
Transformer
Transportation
R
Hazard is anything with
potential to cause harm or
loss.
Risk is the harm
resulting from the
hazard.
Risk
Value
enclosed
legend page
for details)
Risk / Impact
OH&S
E
R=SXP
OH&S
SXP
S
P
S
P
Existing Controls
(OH&S)
Existing Controls
(Environmental)
2021.05.04
Rating (see
enclosed
legend page
for details)
OH&S
E
SXP
Collision
with
another vehicle or
existing
facilities
Damage
structures
to
4
3
3
3
12
9
1) Banks-men shall be
assigned to vehicles on site
2) All drivers shall use the
seatbelt while driving
3) Supervisors shall ensure
that all pedestrians’
access to work site, is well
controlled
4) Clear traffic signs shall
be provided at the work site
Collapse
and
falling of load or
material from the
truck.
Traffic accidents
/
Personnel
Injury / Propert
Damage
3
2
3
3
6
9
1) Warning hazard lights
and signs will be installed
on any extended parts of
the equipment or materials
to be transported.
2) Traffic Rules and
Regulations shall be strictly
followed during the
transportation process.
3) All Loads shall be
secured properly by
support ,lashing and locking
system.
4) All loose accessories
like tools, chains, belts and
wood lumbers shall be
secured during travelling.
5) While loaded trucks are
on stop/standby status, rear
tires shall be secured by
wooden blocks.
6) All hauling personnel
and truck drivers must have
a proper PPE while inside
the jobsite.
Page 2 of 9
1)all vehicles, plant and
equipment are kept in good
working order and serviced
regularly in line with
manufacturer’s
specifications. Leaking
equipment must be
repaired immediately or
removed from the site.
2)All maintenance of
equipment and vehicles
shall be performed in the
workshop or other suitable
designated area.
3)Demarcate an area in
which equipment and
vehicles may be stored.
The location of this area
shall be approved by the
Environmental Engineer.
4)And take measures to
ensure that the surface of
the designated area is not
contaminated as a result of
hydrocarbon leaks from any
machinery or vehicles.
5)One -way routes to be
maintained in all
construction plots.
E
Risk
Value
Applicable
Sign.
Legal &
Resp.
Other
Requirement Person
OH&S E
S X P SXP
S
P
S
P
4
1
3
1
4
3
3
1
3
1
3
3
EPC
contract,
HSEMP,
CESMP
RISK / IMPACT ASSESSMENT
CONTROL SHEET
110kV TRANSFORMER INSTALLATION
Task:
SN
Activity
Description
Hazard /Aspect
Type
(R/NR)
2
Risk Assessment Date
Rating (see
preparatory work
R
Risk
Value
enclosed
legend page
for details)
Risk / Impact
OH&S
E
R=SXP
Hazard is anything with
potential to cause harm or
loss.
Risk is the harm
resulting from the
hazard.
S
P
S
P
Truck movement
losses direction or
struck on access
road.
Traffic accidents
/ Delays
3
3
1
The site did not install
the security chain
according to the
provisions
Personal injury
2
3
1
Construction
personnel personal
protective equipment
wearing error.
Personal injury
3
3
2
2
9
4
Inadequate
preparation of
equipment materials
Construction is
lagging behind
2
3
1
2
6
2
OH&S
SXP
E
SXP
2
9
2
2
6
2

Existing Controls
(OH&S)
Existing Controls
(Environmental)
2021.05.04
Rating (see
enclosed
legend page
for details)
OH&S
1) Traffic controllers shall
control vehicle
movements during
operation.
2) Vehicles shall use main
headlight during poor
visibility.
3) Work shall be stopped
during extreme poor
visibility conditions
4) All vehicles shall be fitted
with reverse alarms.
1) Install special person to
hang plastic chain before
starting work.
2) Full supervision,
non-staff is prohibited.
3) Plastic chain hanging
warning signs.
1) Specialized personnel
will be arranged to inspect
the construction entrance.
2) People who are not
properly dressed are not
allowed to enter.
1) Before construction,
prepare the list of tools.
2) Get all your tools ready a
day in advance
3) At the construction site,
all the tools of the site
personnel are laid out in
the fixed area and the
quantity is counted.
4) After completion of
construction, all tools
shall be taken back with
the same number of
tools as before
construction
Page 3 of 9
1) All warning chains are in the
form of plastic chains.
E
Risk
Value
OH&S E
S X P SXP
S
P
S
P
3
1
1
1
3
2
2
2
1
1
4
1
2
1
1
1
2
1
2
2
1
1
4
1
2) After the work is finished,
special personnel will recycle.
The construction site shall
finish the work and make
the site clear.
Applicable
Sign.
Legal &
Resp.
Other
Requirement Person
RISK / IMPACT ASSESSMENT
CONTROL SHEET
110kV TRANSFORMER INSTALLATION
Task:
Risk Assessment Date
Rating (see
SN
Activity
Description
Hazard /Aspect
Type
(R/NR)
3
Installation of
principal part
R
enclosed
legend page
for details)
Risk / Impact
Hazard is anything with
potential to cause harm or
loss.
Risk is the harm
resulting from the
hazard.
Lifting equipment
and
personnel
without audit
Electrically
powered toolsElectricity
Rotating parts
Sharp edges
Slip, Trip and Fall
OH&S
E
Risk
Value
R=SXP
OH&S
SXP
Existing Controls
(OH&S)
Existing Controls
(Environmental)
2021.05.04
Rating (see
enclosed
legend page
for details)
OH&S
E
SXP
S
P
S
P
accidents
/Personnel
Injury/Property
Damage
4
4
3
3
16
9
1) The lifting weight shall
be strictly verified before
lifting.
2) All the sling and sling
have passed the inspection.
3) Lifting equipment must
be operated by licensed
personnel.
4) In the process of
hoisting, sufficient safe
distance must be kept
between the hoisting
equipment and the electrical
equipment.
Personnel Injury
Electrocution
Burn injury
3
2
1
1
6
1
1) Ensure periodic
inspection and
maintenance of power
tools by competent
electrician..
2) Ensure competency of
person before using a
power tool.
3) Ensure provision of
appropriate PPEs for the
task.
4) Ensure to keep other
workers away to avoid
accident from hand tools
movement.
5) Adequate space ensured
between personnel while
using hand tools.
Avoid using tools standing
on slippery, uneven
surfaces and over loose
objects.
Page 4 of 9
1)all vehicles, plant and
equipment are kept in good
working order and serviced
regularly in bunded area in
line with manufacturer’s
specifications. Leaking
equipment must be
repaired immediately or
removed from the site.
2)All maintenance of
equipment and vehicles
shall be performed in the
workshop or other suitable
designated area.
3)Demarcate an area in
which equipment and
vehicles may be stored.
The location of this area
shall be approved by the
Environmental Engineer.
4)And take measures to
ensure that the surface of
the designated area is not
contaminated as a result of
hydrocarbon leaks from any
machinery or vehicles.
E
Risk
Value
OH&S E
S X P SXP
S
P
S
P
2
2
2
1
4
2
1
2
3
1
2
3
Applicable
Sign.
Legal &
Resp.
Other
Requirement Person
RISK / IMPACT ASSESSMENT
CONTROL SHEET
110kV TRANSFORMER INSTALLATION
Task:
Risk Assessment Date
Rating (see
SN
Activity
Description
Hazard /Aspect
Type
(R/NR)
Hazard is anything with
potential to cause harm or
loss.
Manual handling
Risk / Impact
Risk is the harm
resulting from the
hazard.
Risk
Value
enclosed
legend page
for details)
OH&S
E
R=SXP
OH&S
SXP
Existing Controls
(OH&S)
Existing Controls
(Environmental)
2021.05.04
Rating (see
enclosed
legend page
for details)
OH&S
E
SXP
S
P
S
P
Physical harm
Can occur
through
attempting to
lift, pull or push
a load outside
physical
capabilities.
2
2
1
2
4
2
Mechanical handling
devices shall be used
wherever possible, i.e.
crane, rigging equipment,
forklifts, pallet trucks or
trolleys.
sprains, Back
pains, Work
related
upper ,limb
disorders
2
2
1
2
4
2
Cuts, and
Abrasions
Can occur
where loads are
handled without
wearing suitable
personal
protective
equipment.
2
2
1
2
4
2
E
Risk
Value
OH&S E
S X P SXP
S
P
S
P
2
1
1
1
2
1
Manual handling training
shall be implemented for
the workforce to ensure that
they are aware of the
hazards present and the
precautions necessary.
2
1
1
1
2
1
1) Wherever possible, load
s shall be covered or
packed in such a way so as
not to harm the carrier.
2) Personnel shall wear
suitable personal protection
to reduce the possibility of
harm.
3) Tow persons lifting shall
be utilized whenever
possible (taking into
account the size and weight
of the load to be moved
2
1
1
1
2
1
Page 5 of 9
Maintain daily
housekeeping,
recyclable/non recyclable
waste stored separately.
Applicable
Sign.
Legal &
Resp.
Other
Requirement Person
RISK / IMPACT ASSESSMENT
CONTROL SHEET
110kV TRANSFORMER INSTALLATION
Task:
Risk Assessment Date
Rating (see
SN
Activity
Description
Hazard /Aspect
Type
(R/NR)
4
Working at height
The operation is
carried out at a
height above 2m
(including 2m) of
the fall height
where it is possible
to fall.
R
enclosed
legend page
for details)
Risk / Impact
Hazard is anything with
potential to cause harm or
loss.
Risk is the harm
resulting from the
hazard.
Falling of materials
from height
Personnel Injury
Property
damage
OH&S
E
Risk
Value
R=SXP
OH&S
SXP
S
P
S
P
4
3
4
2
12
Existing Controls
(OH&S)
Existing Controls
(Environmental)
Rating (see
enclosed
legend page
for details)
OH&S
E
SXP
8
2021.05.04
1) Safety harness will be
worn and attached to a
secure anchor point
when erection work is
being undertaken.
2) Safe means of access
onto work platform such
as ladders/ scaffolding
will be provided and
maintained.
3) All materials, tools and
equipment shall be kept
in safe places at all times
while working at heights.
All materials and tools to
be harnessed during
working at height,
exclusion zone to be
established under and
around working area.
4) Authorized personnel
shall erect below and
around the working area
suitable barriers in order
to areas. Appropriate
warring signs shall be
posted and personnel
controlled by close
supervision.
Page 6 of 9
Maintain daily
housekeeping, general
waste/hazardous waste
stored separately.
E
Risk
Value
OH&S E
S X P SXP
S
P
S
P
2
2
2
1
4
2
Applicable
Sign.
Legal &
Resp.
Other
Requirement Person
RISK / IMPACT ASSESSMENT
CONTROL SHEET
110kV TRANSFORMER INSTALLATION
Task:
Risk Assessment Date
Rating (see
SN
Activity
Description
Hazard /Aspect
Type
(R/NR)
5
Installation of
accessories
R
Hazard is anything with
potential to cause harm or
loss.
Risk / Impact
Risk is the harm
resulting from the
hazard.
Risk
Value
enclosed
legend page
for details)
OH&S
E
R=SXP
OH&S
SXP
S
P
S
P
Existing Controls
(OH&S)
Existing Controls
(Environmental)
2021.05.04
Rating (see
enclosed
legend page
for details)
OH&S
E
SXP
E
Risk
Value
OH&S E
S X P SXP
S
P
S
P
The transformer
lead wire bolt is
loose.
Property
Damage
4
3
4
2
12
8
Arrange personnel to check
each screw carefully.
Maintain daily
housekeeping, general
waste/hazardous waste
stored separately.
2
2
2
1
4
2
Tools were left in
the low voltage
lead casing.
Property
Damage
4
4
2
2
16
4
1) Get all your tools ready a
day in advance
2) At the construction site,
all the tools of the site
personnel are laid out in
the fixed area and the
quantity is counted.
3) After completion of
construction, all tools
shall be taken back with
the same number of
tools as before
construction
Maintain daily
housekeeping, general
waste/hazardous waste
stored separately.
3
2
2
1
6
2
insulated sleeve
damage
Property
Damage
3
3
1
2
9
2
1) Careful work, avoid
damage, do not place
casing on the ground
2) When hoisting, someone
must help to avoid
excessive casing swing.
Maintain daily
housekeeping, general
waste/hazardous waste
stored separately.
2
2
1
1
4
1
Incorrect
installation of gas
relay
Property
Damage
4
3
2
2
12
4
1) The installation must be
carried out in the
direction of the
manufacturer's logo
without any wrong
installation, and the final
inspection should be
re-checked
Maintain daily
housekeeping, general
waste/hazardous waste
stored separately.
3
2
2
1
6
2
Page 7 of 9
Applicable
Sign.
Legal &
Resp.
Other
Requirement Person
RISK / IMPACT ASSESSMENT
CONTROL SHEET
110kV TRANSFORMER INSTALLATION
Task:
Risk Assessment Date
Rating (see
SN
Activity
Description
Hazard /Aspect
Type
(R/NR)
6
Vacuum processing
and vacuum fill in
oil
R

Hazard is anything with
potential to cause harm or
loss.
enclosed
legend page
for details)
Risk / Impact
Risk is the harm
resulting from the
hazard.
OH&S
E
Risk
Value
R=SXP
OH&S
SXP
S
P
S
P
Existing Controls
(OH&S)
Existing Controls
(Environmental)
2021.05.04
Rating (see
enclosed
legend page
for details)
OH&S
E
SXP
OH&S E
S X P SXP
S
P
S
P
3
2
2
1
6
2
Impurity wire into
the transformer
interior
Impurity metal
mesh wire into
the transformer
internal pollution
winding, cause
short circuit,
causing
equipment
damage
5
3
3
2
15
6
Strictly clean the surface of
the accessories with
anhydrous ethanol, scrub
clean, and rinse the
components in direct
contact with the transformer
with qualified oil.
Too high or too low
vacuum.
equipment
damage
5
3
3
2
15
6
Vacuum degree is strictly in
accordance with the
specifications and
requirements of
manufacturers.
3
2
2
1
6
2
The filling oil level
is wrong
equipment
damage
5
3
3
2
15
6
Oil must be added from the
bottom of the transformer
3
2
2
1
6
2
Page 8 of 9
1)Rinsing with plastic
bucket at the bottom of the
residue, so as not to
insulate oil flow to the
ground, causing pollution
E
Risk
Value
Applicable
Sign.
Legal &
Resp.
Other
Requirement Person
RISK / IMPACT ASSESSMENT
CONTROL SHEET
110kV TRANSFORMER INSTALLATION
Task:
Risk Assessment Date
Rating (see
SN
Activity
Description
Hazard /Aspect
Type
(R/NR)
7
Working in Extreme
Weather Condition
R
Hazard is anything with
potential to cause harm or
loss.
Risk / Impact
Risk is the harm
resulting from the
hazard.
Risk
Value
enclosed
legend page
for details)
OH&S
E
R=SXP
OH&S
SXP
E
SXP
Existing Controls
(OH&S)
Rating (see
enclosed
legend page
for details)
OH&S
S
P
S
P
Hot weather
Heat Stress
3
3
1
2
9
2
1) Implement the hot
weather procedure.
2) Stop all work when
temperature levels reach 50
ºC.
3) Provide shelter where
workers can find shade and
protection form the direst
sunrays.
4) Provide periodic water
breaks where workers can
drink before, during and
after work.
5) Establish a work
regimen where workers can
be rotated, allowing short
rest periods to prevent
harmful effects due to hear.
6) Supervisors shall
monitor their work force by
looking for signs of
dehydrating, especially in
older persons or workers
that have health problems.
7) Ensure that each team
includes a first aid provider.
8) An ambulance shall be
made available at all time.
Wind
(Dust)
Irritation to eyes
and lungs
3
3
3
3
9
9
1) All works shall use eye
protection.
2) Provide dust masks
during windy/ dusty
condition.
weather
Existing Controls
(Environmental)
2021.05.04
Mandatory
R – routine / NR – non routine
Page 9 of 9
1)Dust suppression control
measures shall be carried
out at regular intervals.
2)Excavation work and
backfill work shall be
stopped during wind
weather.
3)Establish a heat stress
point at site with a flagging
system
E
Risk
Value
OH&S E
S X P SXP
S
P
S
P
3
1
1
1
3
2
3
1
3
1
3
3
Applicable
Sign.
Legal &
Resp.
Other
Requirement Person
10