Unit of competency Outline
Date retreived
22/07/2026 10:54 PM AWST
22/07/2026 10:54 PM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Design gas reticulation systems
Design gas reticulation systems
Unit of competency
National Code
CPCPPS5002A
CPCPPS5002A
State Code
W9727
W9727
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
20/06/2014
Field of Education
040327 - Plumbing
Original Release Date
20/06/2014
Nominal Hours
160
Description
This unit of competency specifies the outcomes required to design and size gas reticulation systems, including determining material, placement and ventilation requirements. The unit also covers the analysis and interpretation of relevant gas codes and standards, the preparation of documentation for testing and commissioning, and testing for safe operation.
Notes
Elements and Performance Criteria
1. Evaluate design parameters.
- 1.1. Scope of work is established for gas reticulation systems.
- 1.2. Design requirements are determined from plans, specifications and client briefs.
- 1.3. Cost-benefit analysis is conducted comparing a range of pipe materials and system designs.
- 1.4. Statutory and regulatory requirements and Australian and New Zealand standards for the design of gas reticulation systems are analysed and applied.
- 1.5. Manufacturer requirements and trade and technical manuals are interpreted.
- 1.6. Additional research, including a desktop study, is conducted to outline design parameters.
- 1.7. Performance requirements are established.
2. Plan and detail system components.
- 2.1. Layout of pipework systems and type and location of fittings and valves are planned.
- 2.2. Pipe sizes are calculated for a range of applications.
- 2.3. Ventilation and flue requirements are specified for a range of applications.
- 2.4. Gas metering and measurement of gas consumption are conducted.
- 2.5. Distribution pressures and specifications of regulators and appliances are detailed for a range of applications.
- 2.6. Cylinder and tank systems are designed and detailed.
- 2.7. Safety, ignition, thermostat and gas control devices are specified in compliance with relevant standards and codes.
- 2.8. Pipe fixings are designed for a range of applications.
- 2.9. Approved materials, jointing methods and installation requirements for gas reticulation systems are specified.
3. Design and size systems.
- 3.1. Gas reticulation systems are designed for a range of applications.
- 3.2. Gas reticulation systems are designed and sized using computer software packages.
4. Prepare documentation.
- 4.1. Plans are prepared for a range of gas reticulation systems.
- 4.2. Specification for a gas reticulation system is prepared.
- 4.3. Testing and commissioning schedule is prepared.
- 4.4. Operation and maintenance manual is produced.
includes:
interpretation of plans and specifications
sizing and documenting layout of gas reticulation systems for applications, including residential, commercial and industrial
may be for new projects or an existing structure being renovated, extended, restored or maintained.
architectural specifications
builder specifications
owner requirements
specialist use applications.
comparison of range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of project.
Acts, regulations and local and state government policies, including group and strata titling
AS/NZS1596 The storage and handling of LP gas
AS5601 (AG601) Gas installations
Building Code of Australia
Gas Act 1965 and amendments
gas regulations
gas utility and supplier information and requirements
industry standards
manufacturer requirements.
material specifications
pump tables
sizing tables
technical and trade manuals.
architectural and building plans
council plans
developer plans
other documents, including:
applications
forms
other reports as available.
have principles of economy, serviceability, durability and fit for use applied
not unduly affect building integrity and aesthetic appeal.
bends
couplings
regulators
tees
unions.
energy
gas volume
pressure
sizing
storage.
appliance flue design and ventilation requirements in accordance with standards, regulations and gas authority requirements.
adjustment procedures of regulators
excessive pressure protection types of regulators
gas regulation method
identification, analysis and documentation of regulator faults
principles of operation
selection and installation requirements
sizing of regulators
types of gas regulators.
commercial appliances
components
construction of the appliance
domestic appliance design
electronic controls
industrial appliances.
anticipated use
appropriate time period between refilling
gas storage requirements calculations.
anchors
bracket spacing
corrosion protection
cover
hanging brackets
material requirements
saddles
wall and ceiling brackets.
copper
fittings and fixtures
galvanised steel
polyethylene
unplasticised polyvinyl chloride (uPVC).
brazing and threading
gluing
mechanical joints
rubber ring
solvent cement welding.
clipping, bedding and installation detail
installation requirements for mobile, marine installation and portable appliances (high and low-pressure)
jointing requirements
level of workmanship.
axonometrics
cross-sections
details
elevations
isometrics
schematics, which may be produced using:
computer generation
Indian ink
pencil
pigment liner
sections.
appliances
bedding
clipping
details of specialised components
jointing
manufacturer requirements
materials
valves
workmanship.
bubble leak testing
electronic gas leak detection
flow testing
inspection checklist
pressure testing
quality assurance (QA) audit.
checking for burrs and obstructions
commissioning appliances
confirming fit for purpose
purging system
removing contaminants.
check for blockages
leak detection
regular inspection
regular maintenance requirements.
interpretation of plans and specifications
sizing and documenting layout of gas reticulation systems for applications, including residential, commercial and industrial
may be for new projects or an existing structure being renovated, extended, restored or maintained.
architectural specifications
builder specifications
owner requirements
specialist use applications.
comparison of range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of project.
Acts, regulations and local and state government policies, including group and strata titling
AS/NZS1596 The storage and handling of LP gas
AS5601 (AG601) Gas installations
Building Code of Australia
Gas Act 1965 and amendments
gas regulations
gas utility and supplier information and requirements
industry standards
manufacturer requirements.
material specifications
pump tables
sizing tables
technical and trade manuals.
architectural and building plans
council plans
developer plans
other documents, including:
applications
forms
other reports as available.
have principles of economy, serviceability, durability and fit for use applied
not unduly affect building integrity and aesthetic appeal.
bends
couplings
regulators
tees
unions.
energy
gas volume
pressure
sizing
storage.
appliance flue design and ventilation requirements in accordance with standards, regulations and gas authority requirements.
adjustment procedures of regulators
excessive pressure protection types of regulators
gas regulation method
identification, analysis and documentation of regulator faults
principles of operation
selection and installation requirements
sizing of regulators
types of gas regulators.
commercial appliances
components
construction of the appliance
domestic appliance design
electronic controls
industrial appliances.
anticipated use
appropriate time period between refilling
gas storage requirements calculations.
anchors
bracket spacing
corrosion protection
cover
hanging brackets
material requirements
saddles
wall and ceiling brackets.
copper
fittings and fixtures
galvanised steel
polyethylene
unplasticised polyvinyl chloride (uPVC).
brazing and threading
gluing
mechanical joints
rubber ring
solvent cement welding.
clipping, bedding and installation detail
installation requirements for mobile, marine installation and portable appliances (high and low-pressure)
jointing requirements
level of workmanship.
axonometrics
cross-sections
details
elevations
isometrics
schematics, which may be produced using:
computer generation
Indian ink
pencil
pigment liner
sections.
appliances
bedding
clipping
details of specialised components
jointing
manufacturer requirements
materials
valves
workmanship.
bubble leak testing
electronic gas leak detection
flow testing
inspection checklist
pressure testing
quality assurance (QA) audit.
checking for burrs and obstructions
commissioning appliances
confirming fit for purpose
purging system
removing contaminants.
check for blockages
leak detection
regular inspection
regular maintenance requirements.
Overview of assessment
This unit of competency could be assessed in the workplace or a close simulation of the workplace environment providing that simulated or project-based assessment techniques fully replicate plumbing and services workplace conditions, materials, activities, responsibilities and procedures.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
A person who demonstrates competency in this unit must be able to provide evidence of:
evaluating and documenting design parameters, including client, regulatory, manufacturer and Australian and New Zealand standard requirements for a range of gas reticulation systems
producing an appropriate layout for gas reticulation systems planned in accordance with manufacturer and regulatory requirements
calculating pipe sizes in accordance with regulations and manufacturer requirements
designing and sizing gas reticulation systems using appropriate software
preparing plans for a range of gas reticulation systems
preparing specifications for gas reticulation systems
preparing testing and commissioning schedules
producing operation and maintenance manuals.
Context of and specific resources for assessment
This competency is to be assessed using standard and authorised work practices, safety requirements and environmental constraints.
Assessment of essential underpinning knowledge will usually be conducted in an off-site context.
Assessment is to comply with relevant regulatory or Australian standards' requirements.
Resource implications for assessment include:
an induction procedure and requirement
realistic tasks or simulated tasks covering the mandatory task requirements
relevant specifications and work instructions, including design brief drawings, specifications, codes, design concepts and construction schedules
tools and equipment appropriate to applying safe work practices, including computers, software and calculators
workplace instructions relating to safe working practices and addressing hazards and emergencies
material safety data sheets
research resources, including industry related systems information.
Reasonable adjustments for people with disabilities must be made to assessment processes where required. This could include access to modified equipment and other physical resources, and the provision of appropriate assessment support.
Method of assessment
Assessment methods must:
satisfy the endorsed Assessment Guidelines of the Construction, Plumbing and Services Integrated Framework Training Package
include direct observation of tasks in real or simulated work conditions, with questioning to confirm the ability to consistently identify and correctly interpret the essential underpinning knowledge required for practical application
reinforce the integration of employability skills with workplace tasks and job roles
confirm that competency is verified and able to be transferred to other circumstances and environments.
Validity and sufficiency of evidence requires that:
competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace
where the assessment is part of a structured learning experience the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice, with a decision on competency only taken at the point when the assessor has complete confidence in the person's demonstrated ability and applied knowledge
all assessment that is part of a structured learning experience must include a combination of direct, indirect and supplementary evidence.
Assessment processes and techniques should as far as is practical take into account the language, literacy and numeracy capacity of the candidate in relation to the competency being assessed.
Supplementary evidence of competency may be obtained from relevant authenticated documentation from third parties, such as existing supervisors, team leaders or specialist training staff.
This unit of competency could be assessed in the workplace or a close simulation of the workplace environment providing that simulated or project-based assessment techniques fully replicate plumbing and services workplace conditions, materials, activities, responsibilities and procedures.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
A person who demonstrates competency in this unit must be able to provide evidence of:
evaluating and documenting design parameters, including client, regulatory, manufacturer and Australian and New Zealand standard requirements for a range of gas reticulation systems
producing an appropriate layout for gas reticulation systems planned in accordance with manufacturer and regulatory requirements
calculating pipe sizes in accordance with regulations and manufacturer requirements
designing and sizing gas reticulation systems using appropriate software
preparing plans for a range of gas reticulation systems
preparing specifications for gas reticulation systems
preparing testing and commissioning schedules
producing operation and maintenance manuals.
Context of and specific resources for assessment
This competency is to be assessed using standard and authorised work practices, safety requirements and environmental constraints.
Assessment of essential underpinning knowledge will usually be conducted in an off-site context.
Assessment is to comply with relevant regulatory or Australian standards' requirements.
Resource implications for assessment include:
an induction procedure and requirement
realistic tasks or simulated tasks covering the mandatory task requirements
relevant specifications and work instructions, including design brief drawings, specifications, codes, design concepts and construction schedules
tools and equipment appropriate to applying safe work practices, including computers, software and calculators
workplace instructions relating to safe working practices and addressing hazards and emergencies
material safety data sheets
research resources, including industry related systems information.
Reasonable adjustments for people with disabilities must be made to assessment processes where required. This could include access to modified equipment and other physical resources, and the provision of appropriate assessment support.
Method of assessment
Assessment methods must:
satisfy the endorsed Assessment Guidelines of the Construction, Plumbing and Services Integrated Framework Training Package
include direct observation of tasks in real or simulated work conditions, with questioning to confirm the ability to consistently identify and correctly interpret the essential underpinning knowledge required for practical application
reinforce the integration of employability skills with workplace tasks and job roles
confirm that competency is verified and able to be transferred to other circumstances and environments.
Validity and sufficiency of evidence requires that:
competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace
where the assessment is part of a structured learning experience the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice, with a decision on competency only taken at the point when the assessor has complete confidence in the person's demonstrated ability and applied knowledge
all assessment that is part of a structured learning experience must include a combination of direct, indirect and supplementary evidence.
Assessment processes and techniques should as far as is practical take into account the language, literacy and numeracy capacity of the candidate in relation to the competency being assessed.
Supplementary evidence of competency may be obtained from relevant authenticated documentation from third parties, such as existing supervisors, team leaders or specialist training staff.
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| WF934 | CPCPPS5002B | Design gas reticulation systems | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| J499 | CPC50612 | Diploma of Hydraulic Services Design | Qualification |