MEM05020 Perform advanced welding using gas tungsten arc welding process

Release: 2

MEM05020 Perform advanced welding using gas tungsten arc welding process

Modification History

Release 2. Quantum of hours of workplace practice removed. Supersedes and is equivalent to MEM05020 Perform advanced welding using gas tungsten arc welding process (Release 1).

Release 1. Supersedes and is equivalent to MEM05020C Perform advanced welding using gas tungsten arc welding process.

Application

This unit of competency defines the skills and knowledge required to carry out advanced welding using gas tungsten arc welding (GTAW).

Welds are associated with a range of structural sections and/or plate and/or pipe for general fabrication. Weld quality would typically conform to AS 1554 Structural Purpose or equivalent.

No licensing, legislative or certification requirements apply to this unit at the time of publication.

Band:	A

Unit Weight:	4

Pre-requisite Unit

MEM05007	Perform manual heating and thermal cutting
MEM05019	Weld using gas tungsten arc welding process
MEM05049	Perform routine gas tungsten arc welding
MEM05051	Select welding processes
MEM05052	Apply safe welding practices
MEM09002	Interpret technical drawing
MEM11011	Undertake manual handling
MEM12023	Perform engineering measurements
MEM12024	Perform computations
MEM13015	Work safely and effectively in manufacturing and engineering
MEM14006	Plan work activities
MEM16006	Organise and communicate information
MEM18001	Use hand tools
MEM18002	Use power tools/hand held operations

Competency Field

Fabrication

Elements and Performance Criteria

Elements describe the essential outcomes.	Performance criteria describe the performance needed to demonstrate achievement of the element.
1	Determine job requirements	1.1	Follow standard operating procedures (SOPs)
1.2	Comply with work health and safety (WHS) requirements at all times
1.3	Use appropriate personal protective equipment (PPE) in accordance with SOPs
1.4	Identify job requirements from specifications, drawings, job sheets or work instructions
2	Prepare materials for welding	2.1	Prepare materials to achieve the required weld requirements
2.2	Assemble/align materials to specification, where required
3	Select, assemble and set up welding equipment and consumables	3.1	Identify and select welding equipment and electrodes, accessories and consumables appropriate to the material
3.2	Assemble and set up AC or DC welding equipment
4	Minimise and rectify distortion	4.1	Apply appropriate distortion prevention measures
4.2	Rectify any distortion using appropriate techniques
5	Weld joints to specifications using GTAW	5.1	Ensure weld deposit is to specifications
5.2	Clean joints to specifications
6	Ensure weld conformance	6.1	Inspect weld joints visually for conformance to specifications
6.2	Rectify any weld defects with minimum loss of sound metal using correct techniques and tools
6.3	Complete weld records, where required

Foundation Skills

This section describes those required skills (reading, writing, oral communication and numeracy) that are essential to workplace performance in this unit of competency.

Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

Range of Conditions

This field allows for different 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.
Welds include the following:	fillet and butt welds carried out in all positions
Materials include one (1) or more of the following:	low carbon cast iron stainless and low alloy steel aluminium
Preparation includes one (1) or more of the following:	pre-heating setting up of jigs, fixtures and clamps joint preparation (e.g. bevelling)
Distortion prevention measures include one (1) or more of the following:	pre-heating setting up of jigs fixtures and clamps
Rectify includes the use of one (1) or more of the following:	oxy acetylene air arc equipment grinding devices
Defects include one (1) or more of the following:	porosity slag inclusions discontinuities lack of penetration undercut

Unit Mapping Information

Release 2. Supersedes and is equivalent to MEM05020 Perform advanced welding using gas tungsten arc welding process (Release 1).

Release 1. Supersedes and is equivalent to MEM05020C Perform advanced welding using gas tungsten arc welding process.

Links

Companion Volume implementation guides are found in VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=b7050d37-5fd0-4740-8f7d-3b7a49c10bb2