Unit of competency Outline
Date retreived
22/07/2026 5:49 AM AWST
22/07/2026 5:49 AM 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.
Prepare safe design specifications of a gas system
Prepare safe design specifications of a gas system
Unit of competency
National Code
UEGNSG121B
UEGNSG121B
State Code
S8150
S8150
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
07/04/2014
Field of Education
061303 - Environmental Health
Original Release Date
07/04/2014
Nominal Hours
108
Description
1) Scope:1.1) DescriptorThis Unit covers the requirements to identify safe systems design specifications based on the required Performance Criteria for a gas system/installation, covering natural or liquefied petroleum gas. The competency standard refers to Gas systems; Environmental hazards; System logistics; Resources; Relevant Documentation; Legislative compliance; Relevant authorities.
Notes
Elements and Performance Criteria
1 Prepare input and output Performance Criteria for the system
- 1.1 OHS principles and practices and Environmental and Sustainable Energy procedures which may influence the systems are reviewed and determined
- 1.2 Proposed system usage is analysed and technical requirements of the system are investigated and expected outcomes of the work are confirmed with the appropriate persons
- 1.3 Organisational established procedures on policies and specifications for the job are obtained or established with the appropriate persons
- 1.4 Testing parameters are established from organisational established procedures on policies and specifications
- 1.5 Testing procedures are discussed with appropriate persons in order to ascertain the project brief
- 1.6 Equipment, tools and personal protective equipment are selected and coordinated based on specified requirements and established procedures
- 1.7 Work roles and tasks are allocated according to requirements and individual's competencies
- 1.8 Work is prioritised and sequenced for the most effective outcome, completed within an acceptable timeframe to a quality standard and in accordance with established procedures
- 1.9 Liaison and communication issues with authorised persons, authorities, clients and land owners are resolved and activities coordinated to carry out work
- 1.10 Risk control measures are identified, prioritised and evaluated against the work schedule
- 1.11 Relevant work permits are secured to coordinate the performance of work according to requirements and established procedures
2 Assess the impact of the system on the external environment
- 2.1 System logistics are determined and impact on interconnected systems is assessed
- 2.2 OHS and sustainable energy principles, functionality and practices to reduce the incidents of accidents and minimise waste are incorporated into the project in accordance with requirements and established procedures
- 2.3 Decisions are made on the basis of safety and effective outcomes according to requirements and established procedures
- 2.4 Mathematical models are used to analyse the effectiveness of the finished product as per requirements and established procedures
- 2.5 Technical advice is given to hazards, assessed risks and control measures so that monitoring can be undertaken and appropriate authorities consulted, where necessary, in accordance with requirements and established procedures
- 2.6 Essential Knowledge and Associated Skills are applied to analyse specific data and compare it with compliance specifications to ensure completion of the project within an agreed timeframe according to requirements
- 2.7 Testing is undertaken according to requirements and established procedures
- 2.8 Work teams are arranged to ensure planned goals are met according to established procedures
- 2.9 Solutions to non-routine problems are identified and actioned, using acquired Essential Knowledge and Associated Skills, according to requirements
- 2.10 Quality of work is monitored against personal performance agreement and established organisational and professional standards
- 2.11 Strategic plans are developed incorporating organisational initiatives as per established procedures
3 Identify options for the system and evaluate options and prepare specifications
- 3.1 Final inspections are undertaken to ensure they comply with all requirements and include all specifications and documentation needed to complete the project
- 3.2 Design and construction resources are identified and availability and price is determined and maintenance requirements are documented
- 3.3 Cost benefit analysis is prepared and evaluation criteria are determined, any shortfalls in recommended option are justified and all compliance requirements are met
- 3.4 Appropriate persons are notified of completion and reports and completion documents are finalised.
- 3.5 Reports and completion documents are submitted to relevant persons for approval and where applicable, statutory or regulatory approval
- 3.6 Approved copies of documents are issued and records are updated in accordance with established procedures
RANGE STATEMENT
10) This relates to the competency standard unit as a whole providing the range of contexts and conditions to which the Performance Criteria apply. It allows for different work environments and situations that will affect performance.
This Unit shall be demonstrated in relation to preparing design specifications of a gas system.
The following constants and variables included in the element/Performance Criteria in this unit are fully described in the Definitions Section of this volume and form an integral part of the Range Statement of this unit:
Gas systems
Environmental hazards
System logistics
Resources
Relevant documentation (6)
Legislative compliance
Safe design principles
Relevant authorities
10) This relates to the competency standard unit as a whole providing the range of contexts and conditions to which the Performance Criteria apply. It allows for different work environments and situations that will affect performance.
This Unit shall be demonstrated in relation to preparing design specifications of a gas system.
The following constants and variables included in the element/Performance Criteria in this unit are fully described in the Definitions Section of this volume and form an integral part of the Range Statement of this unit:
Gas systems
Environmental hazards
System logistics
Resources
Relevant documentation (6)
Legislative compliance
Safe design principles
Relevant authorities
EVIDENCE GUIDE
9) The Evidence Guide forms an integral part of this Unit and shall be used in conjunction with all components parts of this unit and performed in accordance with the Assessment Guidelines of this Training Package.
Overview of Assessment
9.1)
Longitudinal competency development approaches to assessment, such as Profiling, require data to be reliably gathered in a form that can be consistently interpreted over time. This approach is best utilised in Apprenticeship programs and reduces assessment intervention. It is the Industry’s preferred model for apprenticeships. However, where summative (or final) assessment is used it is to include the application of the competency in the normal work environment or, at a minimum, the application of the competency in a realistically simulated work environment. It is recognised that, in some circumstances, assessment in part or full can occur outside the workplace. However, it must be in accord with industry and regulatory policy in this regard.
Methods chosen for a particular assessment will be influenced by various factors. These include the extent of the assessment, the most effective locations for the assessment activities to take place, access to physical resources, additional safety measures that may be required and the critical nature of the competencies being assessed.
The critical safety nature of working with electricity, electrical equipment, gas or any other hazardous substance/material carries risk in deeming a person competent. Hence, sources of evidence need to be ‘rich’ in nature so as to minimise error in judgment.
Activities associated with normal every day work have a bearing on the decision as to how much and how detailed the data gathered will contribute to its ‘richness’. Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practised. These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments. Sample assessment instruments are included in the Assessment Guidelines of this Training Package.
Critical aspects of evidence required to demonstrate competency in this unit
9.2)
Before the critical aspects of evidence are considered all prerequisites shall be met.
Evidence for competence in this unit shall be considered holistically. Each element and associated Performance Criteria shall be demonstrated on at least two occasions in accordance with the ‘Assessment Guidelines — UEG11’. Evidence shall also comprise:
A representative body of Performance Criteria demonstrated within the timeframes typically expected of the discipline, work function and industrial environment. In particular this shall incorporate evidence that shows a candidate is able to:
Implement Occupational Health and Safety workplace procedures and practices including the use of risk control measures as specified in the Performance Criteria and range
Apply sustainable energy principles and practices as specified in the Performance Criteria and range
Demonstrate an understanding of the essential knowledge and associated skills as described in this unit to such an extent that the learner’s performance outcome is reported in accordance with the preferred approach; namely a percentile graded result, where required by the regulated environment
Demonstrate an appropriate level of employability skills
Conduct work observing the relevant Anti discrimination legislation, regulations, polices and workplace procedures
Demonstrate performance across a representative range of contexts from the prescribed items below:
Range of tools/equipment/procedures/workplace
Group No
The minimum number of items on which skill is to be demonstrated
Item List
A
At least first 3, Or, last 3
Gas systems:
Natural gas systems
Transmission and distribution pipelines
Control systems
Custody transfer stations
Odorising plant
Corrosion control
Interconnecting system
LPG storage greater than 50kL
Underground storage
Tankers and ships
B
At least 3
Environmental hazards:
Hazards associated with LPG
Hazards associated with natural gas
Geological features
Soil types
Neighbouring plants
Residential areas
Separation distances and emission and contamination hazards
C
Any 1
System logistics:
Land and sea transport routes and equipment
Transmission and distribution pipelines
Land ownership and easements
D
Any 2
Resources:
Appropriate/relevant persons
Materials, tools and equipment
Personal protective equipment
Company standard operating procedures
Equipment manuals
Training resources
E
At least 2
Relevant persons:
Company planners and marketers
Department heads
Business unit managers
Company engineers and consultant engineers
Technical specialists
Statutory authorities and environmental specialists
F
At least 2
Legislative requirements:
Occupational Health and Safety legislation
Relevant Government Acts, regulations and codes of practice
Local government traffic management
G
At least 2
Relevant authorities:
Local and shire councils
Local government authorities
Emergency transport authorities
Rail departments
Landowners/Traditional land owners
H
At least 8
Relevant documentation:
Contracts
Specifications/drawings/plans
Manufacturer's specifications
Work permits
Company standard operation and safety procedures
Company management plans and policies
Hot work permits
Company forms and files
OHS legislation and codes of practice
Other Government legislation
Pipeline licenses
Quality assurance
Commercial agreements
I
All
Interpreting Gas Industry drawings
Understanding of emergency management procedures
Understanding of concepts and skills for Gas Industry supervisors
Communication for Gas Industry supervisors
Understanding of project management techniques
Understanding of chemical and physical behaviours of gas
Ability to manage environmental and cultural sensitive issues
J
At least one occasion
Deal with an unplanned event by drawing on essential knowledge and associated skills to provide appropriate solutions incorporated in the holistic assessment with the above listed items
Context of and specific resources for assessment
9.3)
This unit should be assessed as it relates to normal work practice using procedures, information and resources typical of a workplace. This should include:
OHS policy and work procedures and instructions.
Suitable work environment, facilities, equipment and materials to undertake actual work as prescribed by this Unit.
Appropriate environmental regulation and work practices.
Appropriate organisational requirements.
Appropriate work environment, equipment and tools.
In addition to the resources listed above, in Context of and specific resources for assessment, evidence should show demonstrated competency in preparing safe design specifications of a gas system.
Assessment of this competency must also be undertaken in either an actual workplace or under a simulated work environment. Assessment must also integrate the employability skills.
Method of assessment
9.4)
This Unit shall be assessed by methods given in Volume 1, Part 3 ‘Assessment Guidelines’.
Note: Competent performance with inherent safe working practices is expected in the Industry to which this Unit applies. This requires that the specified Essential Knowledge and Associated Skills are assessed in a structured environment which is primarily intended for learning/assessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the Essential Knowledge and Associated Skills described in this unit.
Concurrent assessment and relationship with other units
9.5)
There are no recommended concurrent assessments with this unit, however in some cases efficiencies may be gained in terms of learning and assessment effort being concurrently managed with allied Units where listed.
UEGNSG117B
Plan and implement the data acquisition and metering requirements of a gas system
UEGNSG118B
Select and commission equipment to meet pressure and temperature control specifications
UEGNSG119B
Manage workplace risk
UEGNSG120B
Manage gas system environmental compliance
UEGNSG115B
Manage gas system projects
UEGNSG122B
Manage a customer service gas business unit
UEGNSG123B
Manage financial resources
UEGNSG116B
Manage physical resources
9) The Evidence Guide forms an integral part of this Unit and shall be used in conjunction with all components parts of this unit and performed in accordance with the Assessment Guidelines of this Training Package.
Overview of Assessment
9.1)
Longitudinal competency development approaches to assessment, such as Profiling, require data to be reliably gathered in a form that can be consistently interpreted over time. This approach is best utilised in Apprenticeship programs and reduces assessment intervention. It is the Industry’s preferred model for apprenticeships. However, where summative (or final) assessment is used it is to include the application of the competency in the normal work environment or, at a minimum, the application of the competency in a realistically simulated work environment. It is recognised that, in some circumstances, assessment in part or full can occur outside the workplace. However, it must be in accord with industry and regulatory policy in this regard.
Methods chosen for a particular assessment will be influenced by various factors. These include the extent of the assessment, the most effective locations for the assessment activities to take place, access to physical resources, additional safety measures that may be required and the critical nature of the competencies being assessed.
The critical safety nature of working with electricity, electrical equipment, gas or any other hazardous substance/material carries risk in deeming a person competent. Hence, sources of evidence need to be ‘rich’ in nature so as to minimise error in judgment.
Activities associated with normal every day work have a bearing on the decision as to how much and how detailed the data gathered will contribute to its ‘richness’. Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practised. These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments. Sample assessment instruments are included in the Assessment Guidelines of this Training Package.
Critical aspects of evidence required to demonstrate competency in this unit
9.2)
Before the critical aspects of evidence are considered all prerequisites shall be met.
Evidence for competence in this unit shall be considered holistically. Each element and associated Performance Criteria shall be demonstrated on at least two occasions in accordance with the ‘Assessment Guidelines — UEG11’. Evidence shall also comprise:
A representative body of Performance Criteria demonstrated within the timeframes typically expected of the discipline, work function and industrial environment. In particular this shall incorporate evidence that shows a candidate is able to:
Implement Occupational Health and Safety workplace procedures and practices including the use of risk control measures as specified in the Performance Criteria and range
Apply sustainable energy principles and practices as specified in the Performance Criteria and range
Demonstrate an understanding of the essential knowledge and associated skills as described in this unit to such an extent that the learner’s performance outcome is reported in accordance with the preferred approach; namely a percentile graded result, where required by the regulated environment
Demonstrate an appropriate level of employability skills
Conduct work observing the relevant Anti discrimination legislation, regulations, polices and workplace procedures
Demonstrate performance across a representative range of contexts from the prescribed items below:
Range of tools/equipment/procedures/workplace
Group No
The minimum number of items on which skill is to be demonstrated
Item List
A
At least first 3, Or, last 3
Gas systems:
Natural gas systems
Transmission and distribution pipelines
Control systems
Custody transfer stations
Odorising plant
Corrosion control
Interconnecting system
LPG storage greater than 50kL
Underground storage
Tankers and ships
B
At least 3
Environmental hazards:
Hazards associated with LPG
Hazards associated with natural gas
Geological features
Soil types
Neighbouring plants
Residential areas
Separation distances and emission and contamination hazards
C
Any 1
System logistics:
Land and sea transport routes and equipment
Transmission and distribution pipelines
Land ownership and easements
D
Any 2
Resources:
Appropriate/relevant persons
Materials, tools and equipment
Personal protective equipment
Company standard operating procedures
Equipment manuals
Training resources
E
At least 2
Relevant persons:
Company planners and marketers
Department heads
Business unit managers
Company engineers and consultant engineers
Technical specialists
Statutory authorities and environmental specialists
F
At least 2
Legislative requirements:
Occupational Health and Safety legislation
Relevant Government Acts, regulations and codes of practice
Local government traffic management
G
At least 2
Relevant authorities:
Local and shire councils
Local government authorities
Emergency transport authorities
Rail departments
Landowners/Traditional land owners
H
At least 8
Relevant documentation:
Contracts
Specifications/drawings/plans
Manufacturer's specifications
Work permits
Company standard operation and safety procedures
Company management plans and policies
Hot work permits
Company forms and files
OHS legislation and codes of practice
Other Government legislation
Pipeline licenses
Quality assurance
Commercial agreements
I
All
Interpreting Gas Industry drawings
Understanding of emergency management procedures
Understanding of concepts and skills for Gas Industry supervisors
Communication for Gas Industry supervisors
Understanding of project management techniques
Understanding of chemical and physical behaviours of gas
Ability to manage environmental and cultural sensitive issues
J
At least one occasion
Deal with an unplanned event by drawing on essential knowledge and associated skills to provide appropriate solutions incorporated in the holistic assessment with the above listed items
Context of and specific resources for assessment
9.3)
This unit should be assessed as it relates to normal work practice using procedures, information and resources typical of a workplace. This should include:
OHS policy and work procedures and instructions.
Suitable work environment, facilities, equipment and materials to undertake actual work as prescribed by this Unit.
Appropriate environmental regulation and work practices.
Appropriate organisational requirements.
Appropriate work environment, equipment and tools.
In addition to the resources listed above, in Context of and specific resources for assessment, evidence should show demonstrated competency in preparing safe design specifications of a gas system.
Assessment of this competency must also be undertaken in either an actual workplace or under a simulated work environment. Assessment must also integrate the employability skills.
Method of assessment
9.4)
This Unit shall be assessed by methods given in Volume 1, Part 3 ‘Assessment Guidelines’.
Note: Competent performance with inherent safe working practices is expected in the Industry to which this Unit applies. This requires that the specified Essential Knowledge and Associated Skills are assessed in a structured environment which is primarily intended for learning/assessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the Essential Knowledge and Associated Skills described in this unit.
Concurrent assessment and relationship with other units
9.5)
There are no recommended concurrent assessments with this unit, however in some cases efficiencies may be gained in terms of learning and assessment effort being concurrently managed with allied Units where listed.
UEGNSG117B
Plan and implement the data acquisition and metering requirements of a gas system
UEGNSG118B
Select and commission equipment to meet pressure and temperature control specifications
UEGNSG119B
Manage workplace risk
UEGNSG120B
Manage gas system environmental compliance
UEGNSG115B
Manage gas system projects
UEGNSG122B
Manage a customer service gas business unit
UEGNSG123B
Manage financial resources
UEGNSG116B
Manage physical resources
Replaces
| State Code | National Code | Title | Type |
|---|---|---|---|
| S5315 | UEGNSG121A | Prepare safe design specifications of a gas system | Unit of competency |
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| OAD67 | UEGNSG121 | Prepare safe design specifications of a gas system | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| D736 | UEG60211 | Advanced Diploma of Gas Supply Industry Operations | Qualification |
| J837 | UEG60114 | Advanced Diploma of Gas Supply Industry Operations | Qualification |