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

equipment required for PAW and its operation and maintenance requirements

the relative advantages of the plasma process for welding and cutting

the composition of gases used in the PAW process

safety precautions applicable to PAW and applicable PPE

Look for evidence that confirms skills in

safely applying advanced gas tungsten arc welding skills defined in unit MEMB Perform welds to code standards using gas tungsten arc welding process and adapting them to perform PAW of specified aircraft parent metal group materials or components to the standards specified by the relevant Regulator CASA or the ADF

safely applying advanced gas tungsten arc welding skills defined in unit MEM05044B Perform welds to code standards using gas tungsten arc welding process, and adapting them to perform PAW of specified aircraft parent metal group materials or components to the standards specified by the relevant Regulator (CASA or the ADF)

applying welding principles unit MEMC Apply welding principles in the context of PAW of aircraft components or materials

applying welding principles (unit MEM05026C Apply welding principles) in the context of PAW of aircraft components or materials

inspecting PAW process equipment for serviceability with particular emphasis on the orifice

identifying weld requirements from applicable documentation

selecting and correctly using items of PPE applicable to PAW 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 PAW authority is sought

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

Evidence is required of the ability to produce plasma arc 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 Aircraft manual welding approvals and qualifications or RAAF Specification Engineering W 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 datadrawings 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 Aircraft manual welding approvals and qualifications or RAAF Specification Engineering W Welders Qualification for Aircraft Missile and Aerospace Fusion welding

Guidance information for assessment

Materials

Component

Parent metal group

Required standard