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Elements and Performance Criteria

1. Prepare to install CNG fuel system
   • Job requirements are determined from workplace instructions
   • CNG fuel system installation information is sourced and interpreted
   • Installation options are analysed and those most appropriate to the circumstances are selected
   • Hazards associated with the work are identified and risks are managed
   • Tools, equipment and materials are selected and checked according to manufacturer specifications and workplace procedures
2. Carry out installation activities
   • CNG fuel system is checked for correct application and components are checked for damage
   • CNG fuel system components are installed according to workplace procedures, manufacturer specifications, safety and environmental requirements and AS/NZS 2739 Natural gas (NG) fuel systems for vehicle engines, and without causing damage to components or systems
   • Installed CNG fuel system is tested for correct operation and required adjustments are made according to manufacturer specifications, workplace procedures, safety requirements, and AS/NZS 2739
3. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and system is presented ready for use
   • 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
4. Prepare to install CNG fuel system
   • Job requirements are determined from workplace instructions
   • CNG fuel system installation information is sourced and interpreted
   • Installation options are analysed and those most appropriate to the circumstances are selected
   • Hazards associated with the work are identified and risks are managed
   • Tools, equipment and materials are selected and checked according to manufacturer specifications and workplace procedures
5. Carry out installation activities
   • CNG fuel system is checked for correct application and components are checked for damage
   • CNG fuel system components are installed according to workplace procedures, manufacturer specifications, safety and environmental requirements and AS/NZS 2739 Natural gas (NG) fuel systems for vehicle engines, and without causing damage to components or systems
   • Installed CNG fuel system is tested for correct operation and required adjustments are made according to manufacturer specifications, workplace procedures, safety requirements, and AS/NZS 2739
6. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and system is presented ready for use
   • 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.

CNG fuel system components must include:	fill valve and fill hose fuel container and mounting service line vaporiser regulator safety lock-off devices mixers or injectors associated electrical and electronic system, including selector and safety switches compliance plates.
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.
Testing CNG fuel system must include:	system leak testing exhaust gas analysis to ensure compliance with relevant emission control standards.

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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:

install one complete compressed natural gas (CNG) fuel system in a vehicle.

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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 installing CNG fuel systems, including procedures for working with extremely cold and flammable gas

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

requirements of AS/NZS 2739 Natural gas (NG) fuel systems, including:

containers and fuel system components

fuel service lines and materials

fuel control equipment

Australian standard inspection, testing and commissioning requirements

CNG system adjustment procedures, including exhaust gas analysis

Australian standard certification, compliance plate, and marking and label requirements.

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