Unit of competency details

MEA101B

Interpret occupational health and safety practices in aviation maintenance

MEA105C

Apply quality standards applicable to aviation maintenance processes

MEA107B

Interpret and use aviation maintenance industry manuals and specifications

MEA108B

Complete aviation maintenance industry documentation

MEM05022C

Perform advanced welding using oxy acetylene welding process

MEM05026C

Apply welding principles

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.

1

Prepare to perform repair or fabricate component using gas welding process

1.1

Materials  or components  to be welded and the applicable parent metal group are identified in accordance with applicable data 

1.2

Correct welding equipment  and consumables  are selected and safely set up in accordance with standard operating procedures

1.3

Component (or materials) for welding are prepared

1.4

Equipment is adjusted ready for the welding process

2

Gas weld component

2.1

Welds are performed to the required standard  in accordance with the applicable repair scheme or drawing

2.2

Completed welds are inspected for defects and any defects rectified

3

Complete documentation

2.3

Required documentation is completed in accordance with standard enterprise procedures

Look for evidence that confirms knowledge of:

• regulatory requirements applicable to aircraft welding
• standards applicable to aircraft welding
• the procedure for assessment of weld test pieces
• the use of gas welding in relation to specified aircraft parent metal groups

Look for evidence that confirms skills in:

• safely applying advanced gas welding skills defined in unit MEM05022C Perform advanced welding using oxy acetylene welding process, to weld specified aircraft parent metal group materials or components to the standards specified by the relevant Regulator (CASA or the ADF)
• applying welding principles (unit MEM05026C Apply welding principles) in the context of gas welding of aircraft components or materials
• identifying weld requirements from applicable documentation
• selecting and correctly using items of PPE applicable to gas welding of aircraft components

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 

Test pieces must be completed and assessed in accordance with the regulatory requirements for the granting of aircraft welding approvals. Competency must be separately assessed for each parent metal group for which a gas welding authority is sought.

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

Evidence is required of the ability to produce gas welds to required specifications consistently across the range of components that are being fabricated or repaired, while applying all relevant safety precautions. The ability to do this must be demonstrated through the production of the test pieces specified for the welding process and parent metal group in the CAAP 33-1(0) Aircraft manual welding: approvals and qualifications or RAAF Specification Engineering W5003 Welders – Qualification for Aircraft, Missile and Aerospace Fusion welding.

Context of and specific resources for assessment 

Test pieces specified for each parent metal group for which approval is sought may be completed in the workplace or a simulated workplace. The individual must be provided with all required equipment, consumables, PPE, materials and data/drawings relating to the test pieces that are required for the approvals being sought.

Assessment of test pieces must be carried out in a testing facility that meets the requirements specified by the applicable Regulator.

Method of assessment 

Assessment methods are specified in the CAAP 33-1(0) Aircraft manual welding: approvals and qualifications or RAAF Specification Engineering W5003 Welders – Qualification for Aircraft, Missile and Aerospace Fusion welding.

Guidance information for assessment 

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.

Materials 

Materials may be any metal used in the construction of aircraft components that is suitable for gas welding

Component 

Component may be any aircraft component where gas welding is specified as either a fabrication or repair technique

Parent metal group 

Parent metal groups against which welding authorities are individually granted are:

• aluminium alloys
• magnesium alloys
• carbon steels and low alloy steels
• corrosion and heat resisting steels
• nickel alloys
• copper-based alloys
• titanium alloys

Welding equipment 

Welding equipment may include:

• fuel gases, cylinders, regulators, hoses, torches and tips

Consumables 

Consumables may include:

• filler rods and fluxes as specified for the task

Required standard 

Standards may be specified in:

• regulations relating to required test pieces
• process specifications
• repair manuals
• overhaul manuals
• Australian and New Zealand Standards