Unit of competency
Modification History
Release 1. Supersedes and is equivalent to MEM05019 Weld using gas tungsten arc welding process.
Application
This unit of competency has been developed for Engineering Tradesperson – Fabrication apprenticeship training and the recognition of trade-level skills in gas tungsten arc welding (GTAW) on heavy or light metal fabrications. It may also apply to other trade occupations requiring higher level GTAW welding skills.
Weld quality must conform to AS 1554 General Purpose and American Bureau of Shipping (ABS), or equivalent.
Where manual thermal processes associated with preparation, pre-heat and/or post-heat is required, the unit MEM05007 Perform manual heating and thermal cutting and the unit MEM05071 Perform advanced manual thermal cutting, gouging and shaping, must also be selected as appropriate.
No licensing, legislative or certification requirements apply to this unit at the time of publication.
Band : A
Unit Weight : 4
Pre-requisite Unit
MEM05049 Perform routine gas tungsten arc welding
MEM05052 Apply safe welding practices
MEM05085 Select welding processes
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 |
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 GTAW |
2.1 Prepare materials to achieve the required weld requirements 2.2 Assemble/align materials to specification in accordance with SOPs |
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 alternating current (AC) or direct current (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 to job specification using GTAW |
5.1 Ensure weld deposit is to specifications 5.2 Clean joints to specifications |
6. Ensure weld conformance |
6.1 Visually inspect weld joints 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 in accordance with SOPs |
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. |
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Welds include: |
fillet and butt welds carried out in all positions. |
Materials include one or more of the following: |
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Preparation includes one or more of the following: |
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Distortion prevention measures include one or more of the following: |
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Rectify includes the use of one or more of the following: |
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Defects include one or more of the following: |
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Unit Mapping Information
Release 1. Supersedes and is equivalent to MEM05019 Weld 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