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Elements and Performance Criteria

1. Identify and confirm the work requirement
   • Objective of the analysis and evaluation is determined from workplace instructions
   • Specifications for gas fuel system are sourced and interpreted
   • System faults, deficiencies or discrepancies are identified and confirmed
   • Hazards associated with the work are identified and risks are managed according to workplace procedures, and safety and environmental requirements
2. Prepare for analysis and evaluation
   • Evaluation criteria are developed or adopted to meet the objective of the analysis and evaluation
   • Analytical and evaluative methodology is developed or identified from technical information
   • Testing equipment is prepared according to manufacturer specifications and workplace procedures
   • Tools and materials required to support the diagnostic procedure are identified, selected and prepared for use
   • Gas fuel system and components are prepared for the diagnostic process
3. Carry out failure analysis
   • Selected analytical and evaluative methodology is followed according to manufacturer specifications and workplace procedures
   • Tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Analytical and other diagnostic findings are verified, as required, by using reliable alternative or optional processes
   • Analytical findings and results are assessed against evaluation criteria
   • Valid conclusions are drawn from available evidence and documented according to workplace requirements
4. Make recommendations
   • Options for responding to the objective are determined from further research of technical support information
   • Rectification method is selected from an analysis of the options, operating conditions, regulatory requirements, Australian Design Rules, and financial implications
   • Report is prepared specifying analysis and evaluation process, and detailing and justifying rectification method or variation to the rectification method
5. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations
   • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
   • Tools and equipment are checked and stored according to workplace procedures
   • Workplace documentation is processed according to workplace procedures
6. Identify and confirm the work requirement
   • Objective of the analysis and evaluation is determined from workplace instructions
   • Specifications for gas fuel system are sourced and interpreted
   • System faults, deficiencies or discrepancies are identified and confirmed
   • Hazards associated with the work are identified and risks are managed according to workplace procedures, and safety and environmental requirements
7. Prepare for analysis and evaluation
   • Evaluation criteria are developed or adopted to meet the objective of the analysis and evaluation
   • Analytical and evaluative methodology is developed or identified from technical information
   • Testing equipment is prepared according to manufacturer specifications and workplace procedures
   • Tools and materials required to support the diagnostic procedure are identified, selected and prepared for use
   • Gas fuel system and components are prepared for the diagnostic process
8. Carry out failure analysis
   • Selected analytical and evaluative methodology is followed according to manufacturer specifications and workplace procedures
   • Tests are carried out according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Analytical and other diagnostic findings are verified, as required, by using reliable alternative or optional processes
   • Analytical findings and results are assessed against evaluation criteria
   • Valid conclusions are drawn from available evidence and documented according to workplace requirements
9. Make recommendations
   • Options for responding to the objective are determined from further research of technical support information
   • Rectification method is selected from an analysis of the options, operating conditions, regulatory requirements, Australian Design Rules, and financial implications
   • Report is prepared specifying analysis and evaluation process, and detailing and justifying rectification method or variation to the rectification method
10. Complete work processes
    • Final inspection is made to ensure work is to workplace expectations
    • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
    • Tools and equipment are checked and stored according to workplace procedures
    • Workplace documentation is processed according to workplace procedures

Range Statement

This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below.

Safety and environmental requirements must include:	work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for working with extremely cold and flammable gas environmental requirements, including procedures for preventing loss of gas to atmosphere.
Analytical and evaluative methodology must include:	diagnostic process, sequence, tests and testing equipment.

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Performance Evidence

Before competency can be determined, individuals must demonstrate they can perform the following according to the standards defined in this unit’s elements, performance criteria, range of conditions and foundation skills:

analyse and evaluate a fault in:

a gas fuel system

the electrical control of a different gas fuel system

the electronic control of a third gas fuel system.

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Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

work health and safety (WHS) and occupational health and safety (OHS) requirements relating to analysing and evaluating faults in gas fuel systems, including procedures for working with extremely cold and flammable gas

environmental requirements, including procedures for preventing loss of gas to atmosphere

principles and processes involved in planning and implementing analysis and evaluation of gas fuel system faults

design and planning of diagnostic procedures of gas fuel system faults, including procedures for diagnosing:

fuel faults

mechanical faults

electrical faults

procedures for analysing and evaluating gas fuel system faults, including:

system failure analysis

component failure analysis

types, functions, operation and limitations of gas fuel systems, including:

compressed natural gas (CNG)

liquefied natural gas (LNG)

liquefied petroleum gas (LPG)

impact of other associated vehicle systems on gas fuel system operation, including:

ignition system and components

engine and components

cooling system and components

intake system and components

exhaust system and components

testing procedures for gas fuel systems, including:

gas system performance under load

safety cut-out operation

convertor operation

mixer or injector operation

types, functions, operation and limitations of diagnostic testing equipment required to analyse and evaluate faults in gas fuel systems

procedures for documenting and reporting the analysis and evaluation process

requirements of Australian Design Rules (ADRs) and Australian standards relating to gas fuel systems.

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