NZQA registered unit standard
20451 version 3
Page 1 of 8
Title
Operate bitumen gangbar sprayer transfer, heating, and blending
equipment
Level
4
Credits
15
Purpose
People credited with this unit standard are able to: identify,
assess, control, and monitor health and safety hazards and
adverse effects on the environment associated with bitumen
gangbar sprayer operations; perform operator servicing and
maintenance on a bitumen gangbar sprayer and equipment;
prepare for bitumen gangbar sprayer operation; prepare for
bitumen transfer, heating, and blending operations with a
gangbar sprayer; undertake bitumen transfer operations with a
gangbar sprayer; heat, circulate, and blend bituminous liquids
in a bitumen gangbar sprayer; and clean bitumen gangbar
sprayer equipment.
Classification
Pavement Surfacing > Chipseal Surfacing
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 20459, Transport bulk bituminous liquids by road and
assist with loading and unloading; and Unit 20461,
Demonstrate knowledge of bitumen gangbar sprayers and
operations; or demonstrate equivalent knowledge and skills.
Explanatory notes
1
The following legislation and requirements apply to this unit standard, and must be
complied with:
Hazardous Substances and New Organisms Act 1996;
Health and Safety in Employment Act 1992;
Resource Management Act 1991;
Land Transport Act 1998;
Hazardous Substances and New Organisms (Personnel Qualifications) Regulations
2001;
Hazardous Substances (Classes 1 to 5 Controls) Regulations 2001;
Hazardous Substances (Classification) Regulations 2001;
Hazardous Substances (Tracking) Regulations 2001;
Land Transport Rule: Dangerous Goods 2005 (Rule 45001/1) and amendment 2010
45001/2;
Local authority requirements;
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
20451 version 3
Page 2 of 8
BCA E/2:97 Performance of Bitumen Distributors, Roading New Zealand, available
on request at http://www.roadingnz.org.nz/;
The Safe Handling of Bituminous Materials Used in Roading – Code of Practice
Code of Practice RNZ 9904:2006 , Roading New Zealand, available for purchase at
http://www.roadingnz.org.nz/;
The Bitumen Safety Handbook; Roading New Zealand, available for purchase at
http://www.roadingnz.org.nz/;
Chipsealing in New Zealand, New Zealand Transport Agency, available at
http://www.nzta.govt.nz/resources/chipsealing-new-zealand-manual/;
Manufacturer’s instructions;
Company procedures;
Gangbar sprayer manufacturer’s manual.
Any legislation or other requirements superseding any of the above will apply,
pending the review of this unit standard.
2
Personal protective equipment must be used throughout operations in accordance
with company procedures.
3
Assessment against this unit standard must be based on evidence from a workplace
context.
4
Assessment against this unit standard is limited to the operation of the gangbar
sprayer’s equipment. The specialist skills of spraying bitumen on roads using a
gangbar are covered in Unit 20452, Spray bitumen for chipseal surfacing using a
gangbar sprayer.
5
Definitions
Blending operations refers to the blending of an adhesion agent or a minor
modification of a cut. It does not include the blending of a major cut.
Company procedures refers to all documented policies, procedures, and
methodologies of the candidate’s employer at the time of training including but not
limited to those relating to health, safety, environment, quality, and operations.
Gangbar sprayer means tank wagon specifically built for automatically controlled
spraying of bituminous materials on pavement surfaces. The equipment on a
gangbar sprayer includes a handbar.
Walk round means to walk around a machine or equipment inspecting it, and its
environment, for hazards and removing hazards that may impair operation.
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NZQA registered unit standard
20451 version 3
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Outcomes and evidence requirements
Outcome 1
Identify, assess, control, and monitor health and safety hazards and adverse effects on the
environment associated with bitumen gangbar sprayer operations.
Range
operations – transferring, heating, blending, circulating, flushing,
decontaminating, clearing blockages.
Evidence requirements
1.1
Health hazards are identified, assessed, and controlled in accordance with
company procedures and legislation.
1.2
Safety hazards are identified, assessed, and controlled in accordance with
company procedures, legislation, and The Bitumen Safety Handbook.
1.3
Adverse effects on the environment are identified, assessed, and controlled in
accordance with company procedures and legislation.
1.4
Health and safety hazards are monitored in accordance with company
procedures and legislation.
Range
1.5
Adverse effects on the environment are monitored in accordance with company
procedures and legislation.
Range
1.6
includes but is not limited to – hazardous material, obstruction,
people in the vicinity, personal injury.
includes but is not limited to – noise, emission, spill.
Procedures for preventing water contamination of hot bituminous liquids are
demonstrated in accordance with Code of Practice RNZ 9904:2006 and
company procedures.
Range
includes but is not limited to – process of adding additives.
1.7
Compatibility of previous load and product to be loaded is determined from
documentation.
1.8
Tank and equipment are checked for possible water contamination and
procedures for dealing with water contamination are demonstrated or simulated
in accordance with Code of Practice RNZ 9904:2006 and company procedures.
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20451 version 3
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Outcome 2
Perform operator servicing and maintenance on a bitumen gangbar sprayer and
equipment.
Evidence requirements
2.1
Machinery is checked in accordance with operator servicing requirements, and
minor adjustments are made in accordance with gangbar sprayer
manufacturer’s manual.
Range
includes but is not limited to – fuels, lubricants, tank, valves,
bitumen pump, pipework, hoses, gangbar, gangbar valves, spray
nozzles, bitumen filter, heating system, bitumen pump
instrumentation, sensors, computer controls, hydraulic systems,
air tanks, air control systems.
2.2
Hoses and couplings are checked for current certification and for wear and tear,
and are replaced, if necessary, in accordance with company procedures.
2.3
Tyres and tyre pressures are checked and adjusted to ensure conformance with
spray chart requirements and compliance with E/2 Specification.
2.4
Procedures for clearing blockages are demonstrated in accordance with Code
of Practice RNZ 9904:2006 gangbar sprayer manufacturer’s manual, and
company procedures.
Range
blockages – bitumen pump, gangbar, valves, pipework, hoses.
2.5
Bitumen filters are cleaned and frequency of cleaning is maintained in
accordance with gangbar sprayer manufacturer’s manual, and company
procedures.
2.6
Routine servicing and maintenance are documented in accordance with
company procedures.
Outcome 3
Prepare for bitumen gangbar sprayer operation.
Evidence requirements
3.1
Preoperational documentation is confirmed and/or completed in accordance
with company procedures.
Range
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dangerous goods, emergency procedures, tank contents.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
3.2
20451 version 3
Page 5 of 8
Prestart safety and operational checks are carried out in accordance with
gangbar sprayer manufacturer’s manual, and company procedures.
Range
walk round, first aid equipment, vehicle controls, vehicle gauges,
tank, valves, bitumen pump, pipework, hoses, bitumen filter,
heating systems, bitumen pump speed instrumentation, vehicle
speed instrumentation, sensors, hydraulic system, air control
systems;
gangbar – valves, spray nozzles, height.
Outcome 4
Prepare for bitumen transfer, heating, and blending operations with a gangbar sprayer.
Range
hot bitumen, emulsified bitumen;
transfer from – storage tank, road tank wagon;
transfer to – storage tank, road tank wagon, bitumen sprayer;
evidence is required of each of the above in any combination.
Evidence requirements
4.1
Selection of site for heating and transferring of bulk bituminous liquids in the
field is made with consideration for worker, public, and environmental safety
and is in accordance with company procedures.
4.2
Compatibility of previous load with product to be loaded is determined in
accordance with company procedures and Code of Practice RNZ 9904:2006.
4.3
Quantity and type of product or blend to be transferred are confirmed in
accordance with company procedures, and job and/or client requirements.
Range
includes but is not limited to – allowance for modifying existing
contents of tank.
4.4
Delivery and receiving tanks, and placarding, are inspected in accordance with
dangerous goods classification of the product to be transferred.
4.5
Position and parking of bitumen gangbar sprayer is checked to facilitate safe
transfer and enable vehicle to be moved with minimal manoeuvring in the event
of an emergency.
4.6
Warning signage and cones are positioned and fire extinguishers are placed
ready for use in accordance with Code of Practice RNZ 9904:2006 and
company procedures.
4.7
Certification, and safe condition, of hoses and couplings are checked and
confirmed in accordance with Code of Practice RNZ 9904:2006 and company
procedures.
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NZQA registered unit standard
20451 version 3
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4.8
Electrical bonding earth straps, if fitted, are connected and overhead filling
equipment or filling hoses are positioned and securely clamped in preparation
for loading/unloading in accordance with Code of Practice RNZ 9904:2006 and
company procedures.
4.9
Delivery and receiving tanks are inspected, and pumping equipment, hatches,
valves, inlets, and outlets are confirmed as ready for transfer in accordance with
company procedures, The Bitumen Safety Handbook, gangbar sprayer
manufacturer’s manual, and tank wagon manufacturer’s instructions.
Outcome 5
Undertake bitumen transfer operations with a gangbar sprayer.
Evidence requirements
5.1
A check is made to ensure unauthorised persons are clear of the operational
area.
5.2
Bitumen is transferred in accordance with company procedures, The Bitumen
Safety Handbook, and the gangbar sprayer manufacturer’s manual.
Range
hot bitumen, emulsified bitumen;
transfer from – storage tank, road tank wagon;
transfer to – storage tank, road tank wagon, bitumen sprayer;
evidence is required of each of the above in any combination.
5.3
Gangbar sprayer pumping equipment is used to transfer bitumen between two
tanks independent of the gangbar sprayer in accordance with company
procedures, The Bitumen Safety Handbook, and the gangbar sprayer
manufacturer’s manual.
5.4
Total volume of load is confirmed as not exceeding the maximum load carrying
capacity of vehicle.
5.5
On completion of transfer, pipelines and/or hoses are purged, the transfer
equipment, hoses, and earth strap, if fitted, are disconnected and secured, and
valves and hatches on gangbar sprayer and receiving tank are secured, in
accordance with company procedures and Code of Practice RNZ 9904:2006.
5.6
Gangbar sprayer, ancillary equipment, and receiving tank are checked for leaks
and the site is checked for spillage in accordance with company procedures,
The Bitumen Safety Handbook, and the gangbar sprayer manufacturer’s
manual.
5.7
Warning signs and cones are removed and stored in accordance with company
procedures.
5.8
Dangerous goods documentation appropriate to the load is completed and is
placed in the vehicle’s dangerous goods folder in accordance with Code of
Practice RNZ 9904:2006.
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NZQA registered unit standard
20451 version 3
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Outcome 6
Heat, circulate, and blend bituminous liquids in a bitumen gangbar sprayer.
Evidence requirements
6.1
Bulk bituminous liquid is heated in accordance with company procedures, The
Bitumen Safety Handbook, and the gangbar sprayer manufacturer’s manual.
6.2
Heating rates and maximum temperatures are monitored and controlled in
accordance with the requirements of the product.
Range
two of – straight bitumen, cutback bitumen, polymer-modified
bitumen, standard cationic emulsion, high binder content polymermodified emulsion.
6.3
Bitumen is circulated in accordance with the gangbar sprayer manufacturer’s
manual, and company procedures
6.4
On site blending of additives is carried out in accordance with The Bitumen
Safety Handbook and the gangbar sprayer manufacturer’s manual, and contract
requirements are met.
Range
evidence is required of blending at least one additive.
Outcome 7
Clean bitumen gangbar sprayer equipment.
Evidence requirements
7.1
Gangbar sprayer equipment is emptied, flushed, and decontaminated in
accordance with The Bitumen Safety Handbook and the gangbar sprayer
manufacturer’s manual.
Range
tank, hoses, pipes, gangbar, handbar.
7.2
Gangbar sprayer equipment, hoses, and couplings are inspected and secured
in accordance with the gangbar sprayer manufacturer’s manual.
7.3
Waste materials are disposed of in accordance with company procedures and
legislation.
Replacement information
Infrastructure ITO
SSB Code 101813
This unit standard and unit standard 20461 replaced unit
standard 1497.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Planned review date
20451 version 3
Page 8 of 8
31 December 2016
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
27 October 2005
31 December 2013
Revision
2
25 May 2007
31 December 2013
Review
3
15 March 2012
N/A
Consent and Moderation Requirements (CMR) reference
0101
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Comments on this unit standard
Please contact Infrastructure ITO askus@infratrain.co.nz if you wish to suggest changes to
the content of this unit standard.
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