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Elements and Performance Criteria

1. Plan and prepare to weld
   • Job requirements are determined from workplace instructions
   • Welding information is accessed and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Tools and equipment are selected and checked for serviceability
   • Work area is prepared and work is planned to carry out TIG welding, minimise waste, and use time efficiently
2. Weld materials using TIG welder
   • TIG welding equipment is prepared, set up and adjusted for specific welding job requirement
   • TIG welding equipment is used according to manufacturer operating procedures and safety and environmental requirements
   • Weld test runs are conducted according to workplace instructions and weld specifications
   • Materials are welded using standard or inverter TIG process to industry standards
3. Check welds
   • Welds are cleaned using appropriate tools and techniques and according to workplace instructions
   • Weld specifications and quality requirements are checked and confirmed by non-destructive inspection
   • Weld defects are identified, prepared for re-welding as required, and appropriate personnel are notified
4. Complete work processes
   • Final inspection is made to ensure work meets workplace expectations and component is presented ready for use
   • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected and stored
   • Tools and equipment are checked, reported if faulty, and stored according to workplace procedures
   • Workplace documentation is processed according to workplace procedures
5. Plan and prepare to weld
   • Job requirements are determined from workplace instructions
   • Welding information is accessed and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Tools and equipment are selected and checked for serviceability
   • Work area is prepared and work is planned to carry out TIG welding, minimise waste, and use time efficiently
6. Weld materials using TIG welder
   • TIG welding equipment is prepared, set up and adjusted for specific welding job requirement
   • TIG welding equipment is used according to manufacturer operating procedures and safety and environmental requirements
   • Weld test runs are conducted according to workplace instructions and weld specifications
   • Materials are welded using standard or inverter TIG process to industry standards
7. Check welds
   • Welds are cleaned using appropriate tools and techniques and according to workplace instructions
   • Weld specifications and quality requirements are checked and confirmed by non-destructive inspection
   • Weld defects are identified, prepared for re-welding as required, and appropriate personnel are notified
8. Complete work processes
   • Final inspection is made to ensure work meets workplace expectations and component is presented ready for use
   • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected and stored
   • Tools and equipment are checked, reported if faulty, 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.

Welding information must include:	manufacturer operating procedures national standards and codes of practice for welding workplace procedures.
Tools and equipment must include:	standard and inverter TIG equipment tungsten electrodes protective screens and fume extraction system shielding gas filler rods PPE, including approved welding helmets.
Safety and environmental requirements must include:	work health and safety (WHS), and occupational health and safety (OHS) requirements, including procedures for: selecting and using PPE for TIG welding, including approved welding helmets using specialist welding tools and equipment using protective screens and fume extraction system manually handling vehicle components and TIG equipment identifying and controlling hazards environmental requirements, including procedures for trapping, storing and disposing of waste materials.

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Performance Evidence

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

carry out tungsten inert gas (TIG) welding to the following material sections:

150 mm long:

aluminium

steel

stainless steel

perform the above TIG welding in the following weld positions:

butt

outside corner

fillet

lap.

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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 carrying out TIG welding, including procedures for:

selecting and using personal protective equipment (PPE) for TIG welding, including approved welding helmets

using specialist welding tools and equipment

using protective screens and fume extraction system

manually handling vehicle components and TIG equipment

identifying and controlling hazards

environmental requirements, including procedures for trapping, storing and disposing of waste materials

different types of shielding gases used in TIG welding

TIG manufacturer operating procedures

material and consumable preparation techniques, including:

aluminium

steel

stainless steel

procedures for setting up and operating TIG equipment

methods and techniques for TIG welding, including:

welding positions:

butt

outside corner

fillet

lap

weld distortion and distortion control techniques

TIG testing procedures, including procedures for visual or non-destructive weld testing

procedures for identifying and rectifying weld defects, including:

lack of penetration

excessive weld build-up

excess heat

undercut

heat affected zone

procedures for protecting vehicle electronics during TIG welding

procedures for final inspection of welded components.

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