Unit of competency details

AURT577120A - Develop and apply gas fuel systems modification (Release 1)


Usage recommendation:
Is superseded by and equivalent to AURTTL5015 - Develop and apply gas fuel system modifications 16/Jan/2013

ReleaseRelease date
1 1 (this release) 01/Sep/2008


SchemeCodeClassification value
ASCED Module/Unit of Competency Field of Education Identifier 030505 Automotive Electrics And Electronics  

Classification history

SchemeCodeClassification valueStart dateEnd date
ASCED Module/Unit of Competency Field of Education Identifier 030505 Automotive Electrics And Electronics  18/Nov/2005 
The content being displayed has been produced by a third party, while all attempts have been made to make this content as accessible as possible it cannot be guaranteed. If you are encountering issues following the content on this page please consider downloading the content in its original form

Modification History

Not Applicable

Unit Descriptor

Unit descriptor 

This unit covers the competence to develop, apply and validate significant modifications to existing gas fuel systems in order to sustain, vary or enhance performance.

Application of the Unit

Application of the unit 

This includes the preparation and application of specifications and processes complying with safety, legal and commercial obligations.

Licensing/Regulatory Information

Not Applicable


Prerequisite units 

Employability Skills Information

Employability skills 

This unit contains employability skills.

Elements and Performance Criteria Pre-Content

Elements describe the essential outcomes of a unit of competency.

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the required skills and knowledge section and the range statement. Assessment of performance is to be consistent with the evidence guide.

Elements and Performance Criteria



1. Identify and confirm the modification requirement

1.1. OH&S requirements, including regulatory requirements, equipment and system isolation requirements and personal protection needs are observed throughout the work.

1.2. Purpose and objectives of the modification are identified from an analysis of inputs and confirmed with the customer.

1.3. Outline options for achieving the required purpose and objectives are identified, framed and presented to the customer prior to proceeding.

1.4. Possible legal and safety impacts of the modification are considered and responded to in accordance with regulatory and enterprise obligations and practices.

2. Develop and validate the modification specification

2.1. Benchmark specifications for the existing gas fuel system are accessed and interpreted.

2.2. Criteria to be used in the selection of the modification method and in the evaluation of the outcomes are identified and documented.

2.3. Proposed modification method is selected following the identification, consideration and evaluation of the full range of available and relevant options.

2.4. Selected option, including material choices and processes, is developed in detail and progressively validated against the established criteria.

2.5. Modification specification is documented to industry and enterprise standards.

3. Apply and test the modification specification

3.1. Selected modification method and process is followed in accordance with the established specifications.

3.2. Modification is completed using equipment, tooling and materials in accordance with accepted industry standards and practices.

3.3. Tests and testing equipment are applied in accordance with regulatory requirements, manufacturer/component supplier specifications and modification specification.

3.4. Test results and other diagnostic findings are verified, if necessary, by using reliable alternate or optional processes.

3.5. Variations necessitated during the modification process or as a result of testing are incorporated into the modification specification.

3.6. Information and detail related to the modification is documented and provided to the appropriate parties in accordance with regulatory and commercial obligations.

4. Clean up work area and maintain equipment

4.1. Materials that can be reused is collected and stored.

4.2. Testing equipment and other support materials are cleaned, maintained and prepared ready for further use or stored in accordance with manufacturer/component supplier specifications and enterprise requirements.

4.3. Waste and scrap is removed following workplace procedures.

4.4. Unserviceable equipment is tagged and faults identified in accordance with workplace procedures.

4.5. Equipment and work area are cleaned and inspected for serviceable condition in accordance with workplace procedures.

Required Skills and Knowledge


This section describes the skills and knowledge required for this unit.

Required skills 

  • collect, organise and understand legal and technical information related to contemporary gas fuel systems modifications.
  • communicate ideas and information to enable confirmation of work requirements and specifications, coordination of work with site supervisor, other workers and customers, reporting of work outcomes and completion of regulatory, commercial and vehicle information systems inputs.
  • plan and organise activities, including the development and planning of modification processes, preparation and layout of the worksite and the obtaining of tooling, equipment, materials and testing equipment to avoid backtracking, workflow interruptions or wastage.
  • work with others and in a team by recognising dependencies and using cooperative approaches to optimise workflow and productivity.
  • use mathematical ideas and techniques to complete measurements, calculate specifications, calibrate and establish testing equipment and evaluate modification results against pre-established criteria.
  • establish modification methods and processes which anticipate and allow for risks and avoid or minimise reworking and avoid wastage.
  • use the full range of workplace technology related to gas fuel systems modification, including testing equipment, maintenance equipment, tooling, calculators and measuring devices and information management systems.

Required knowledge 

  • mechanical theory covering the concepts and principles of mechanical, hydraulic and pneumatic systems.
  • general knowledge of the theory of diagnosis, including concept, design and planning.
  • detailed knowledge of the concepts, types, functions, operations and limitations of gas fuel systems.
  • detailed knowledge of the types, functions, operations and limitations of diagnostic testing equipment.
  • general knowledge of the methods and processes for documenting and reporting diagnostic findings and recommendations.
  • general knowledge of personal computer operation.

Evidence Guide


The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment 

Critical aspects for assessment and evidence required to demonstrate competency in this unit 

  • Interpret work order and locate and apply information.
  • Apply safety requirements, including the isolation of equipment and use of personal protective equipment.
  • Follow work instructions, operating procedures and inspection processes to:
  • minimise the risk of injury to self and others
  • prevent damage and wastage of goods, equipment and products
  • maintain required production output and product quality.
  • Modify a significant gas fuel system or sub-system including:
  • selection, development and documenting of success factors and evaluation criteria before undertaking the modification
  • selection, development and validation of the modification methodology, processes and specification
  • application of modification specification, methodology and process
  • the documenting and reporting of the outcomes.
  • Work effectively with others.
  • Modify activities to cater for variations in workplace context and environment.

Context of , and specific resources for assessment 

Assessment may occur on the job or in a workplace simulated facility with process equipment, materials, work instructions and deadlines.

Access to an operational gas fuel system requiring modification, testing equipment as stipulated in the Range Statement, technical information and a work environment.

Method of assessment 

Assessment of this unit of competence is most likely to be project related and require portfolios or other forms of indirect evidence of process. Direct evidence will include certification of compliance of the final outcome/product or authorisation for use by a competent authority.

Assessment must confirm the inference that competence is able not only to be satisfied under the particular circumstances, but is able to be transferred to other projects.

Competence in this unit may be assessed in conjunction with other functional units which together form part of the holistic work role.

Guidance information for assessment 

Range Statement


The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Gas fuel systems modifications 

Gas fuel systems modifications to be covered by this unit may include those to:

  • enhance engine performance
  • maintain emissions
  • meet Australian Design Rules
  • meet legislative requirements retrospectively.

Inputs to the modification method and processes 

Inputs to the modification method and processes may be obtained from customer requirements, manufacturer/ component supplier specifications, outcomes of diagnostic processes or from regulatory, licensing, intellectual property legislation, safety requirements and Australian Design Rules.

Unit context 

  • OH&S requirements include legislation, vehicle industry regulations, safety management systems, hazardous substances and dangerous goods code and safe operating procedures.
  • Work is carried out in accordance with legislative obligations, Australian Design Rules, environmental legislation, health regulations, manual handling procedures and organisation insurance requirements.
  • Work requires individuals to demonstrate research, analytical, judgement and problem-solving skills in the diagnosis of faults.

Evaluation criteria 

Evaluation criteria, sometimes referred to as success factors, are to be established prior to a modification being undertaken and are to cover safety, functionality, survivability, maintainability, life cycle cost and aesthetics.

Isolation procedures 

Equipment isolation procedures are to be to industry and enterprise standards.

Tests and testing equipment 

Tests and testing equipment is to include that appropriate to the modification being carried out but it should include computer-based diagnostic systems.

Personal protective equipment 

Personal protective equipment is to include that prescribed under legislation, regulations and enterprise policies and practices.

Information and procedures 

  • Workplace procedures relating to the use of tooling and equipment.
  • Workplace procedures relating to reporting and communication.
  • Manufacturer/component supplier specifications and application procedures for testing equipment and materials.
  • Manufacturer/component supplier specifications, schematics and operational procedures related to gas fuel systems modification.
  • Australian Design Rules.
  • Gas fuel vehicle regulations.
  • Vehicle industry publications related to emerging transmission system technology and technology changes.

Unit Sector(s)

Unit sector 


Co-requisite units

Co-requisite units 

Competency field

Competency field