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Elements and Performance Criteria

1. Plan and prepare for oxyacetylene welding, thermal heating and cutting
   • Job requirements are determined from workplace instructions
   • Technical information and workplace procedures relating to oxyacetylene, welding, thermal heating and cutting are accessed and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Tools and equipment, including PPE, are selected and checked for serviceability
   • Welding, thermal heating or cutting is planned to minimise waste and use time efficiently
2. Weld, thermal heat and cut using oxyacetylene plant
   • Oxyacetylene gas working pressure adjustment and flame identification and setting are carried out according to workplace instructions and procedures
   • Welding, thermal heating and cutting is carried out without causing damage to property, vehicle or components
   • Welding, thermal heating and cutting operations are conducted according to job requirements, workplace procedures, and safety and environmental requirements
3. Complete the job
   • 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
4. Plan and prepare for oxyacetylene welding, thermal heating and cutting
   • Job requirements are determined from workplace instructions
   • Technical information and workplace procedures relating to oxyacetylene, welding, thermal heating and cutting are accessed and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Tools and equipment, including PPE, are selected and checked for serviceability
   • Welding, thermal heating or cutting is planned to minimise waste and use time efficiently
5. Weld, thermal heat and cut using oxyacetylene plant
   • Oxyacetylene gas working pressure adjustment and flame identification and setting are carried out according to workplace instructions and procedures
   • Welding, thermal heating and cutting is carried out without causing damage to property, vehicle or components
   • Welding, thermal heating and cutting operations are conducted according to job requirements, workplace procedures, and safety and environmental requirements
6. Complete the job
   • 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.

Tools and equipment must include:

oxyacetylene plant, welding, thermal heating and cutting equipment mild steel (sheet and solid).

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 to use oxyacetylene equipment, including approved oxyacetylene welding glasses using specialist welding, thermal heating and cutting tools and equipment manually handling components and welding, thermal heating and cutting 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 standards defined in this unit’s elements, performance criteria, range of conditions and foundation skills:

carry out oxyacetylene welding procedures on:

one butt joint, 150 mm long

one fillet joint, 150 mm long

one lap joint, 150 mm long

one exhaust pipe joint

carry out a thermal cutting task, including a straight cut of 150 mm long

carry out one of the following thermal heating tasks:

freeing a corroded bolt or fitting

freeing a corroded exhaust component.

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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 oxyacetylene welding, thermal heating and cutting, including procedures for:

selecting and using personal protective equipment (PPE) to use oxyacetylene equipment, including approved oxyacetylene welding glasses

using specialist welding, thermal heating and cutting tools and equipment

manually handling components and welding, thermal heating and cutting equipment

identifying and controlling hazards

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

technical information and workplace procedures relating to oxyacetylene welding and thermal heating and cutting

types and characteristics of different metals

use and operation of oxyacetylene plant, including setting and adjusting pressure and gauges

oxyacetylene flame identification and adjustment, including:

natural

carburising

oxidising

maintenance requirements of oxyacetylene equipment, including checking for oxyacetylene gas leaks from gauges, fittings and hoses

methods and techniques for thermal heating and cutting

procedures for oxyacetylene welding

procedures for reporting faults and material defects

final inspection procedures.

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