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Elements and Performance Criteria

1. Prepare surfaces for application of chemical conversion coating
   • The required pre-treatment task is identified from maintenance documentation and enterprise procedures
   • Enterprise procedures and/or process specifications are used to identify required materials and tools
   • Aircraft or component identification is matched with relevant maintenance documentation
   • Work health and safety (WHS) requirements are identified and complied with and personal protective equipment (PPE) is checked for correct fit and function
   • Common surface soils are removed in accordance with enterprise procedures and/or process specifications
   • Masking is completed on areas where pre-treatment is not required
   • Aluminium alloy substrate is prepared for application of conversion coating in accordance with enterprise procedures and/or process specifications
2. Apply chemical conversion coating
   • The correct environment for conversion coating application is established and maintained
   • The applicable chemical conversion coating is applied while observing all relevant WHS requirements, including the use of material safety data sheets (MSDS) and items of PPE
   • Masking is removed and the aircraft or component is left in a suitable condition for the next task
   • Completion of the pre-treatment process is documented in accordance with enterprise procedures
3. Clean up work area and maintain equipment
   • Material that can be reused is collected and correctly stored
   • Waste material is removed and disposed of or stored in accordance with legislative, regulatory and enterprise procedures
   • Equipment is cleaned in accordance with enterprise procedures or manufacturer’s instructions while observing all relevant WHS requirements, including the use of MSDS and items of PPE
   • Equipment is checked for serviceability and unserviceable items are dealt with in accordance with enterprise procedures
   • Tools are cleaned and maintained in accordance with enterprise procedures
   • Work area is cleaned and inspected for serviceable condition

Range Statement

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.
Procedures and requirements include:	Industry standard procedures specified by manufacturers, regulatory authorities or the enterprise
WHS requirements are identified from:	Commonwealth/state/territory WHS legislation, regulations and codes Procedures manual Safety manual Work instructions Maintenance organisation manual MSDS Defence regulations and instructions Standing instructions
Common surface soils include:	Paint Dirt Grease Oils Fuel Adhesives
Legislative, regulatory and enterprise procedures include:	Commonwealth/state/territory environmental legislation, regulations and codes for the storage and disposal of hazardous and toxic materials MSDS Maintenance organisation manual Procedures manual Work instructions Relevant Defence regulations and instructions Standing instructions

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Performance Evidence

Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria under the specified conditions of assessment, and must include:

applying WHS procedures relating to pre-treatment of aluminium alloy substrates, including the selection and correct use of PPE

applying masking

preparing for chemical conversion coating

water break testing

applying specified pre-treatment process

water break re-testing

using MSDS

selecting and using applicable chemical conversion coating

correctly disposing of waste materials

cleaning and maintenance of equipment and tools.

The underlying skills inherent in this unit should be transferable across a range of pre-treatment tasks associated with aircraft and aircraft component aluminium alloy surfaces. It is essential that applicable processes, cleanliness requirements and safety precautions, including the correct use of PPE, and application of environmental protection procedures are fully observed, understood and complied with. Ability to interpret pre-treatment procedures and apply them in practice is critical.

This is to be demonstrated through application of conversion coatings to aluminium alloy surfaces across a range of aircraft and component tasks.

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Knowledge Evidence

Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:

relevant enterprise procedures and/or process specifications

WHS procedures relating to aluminium alloy pre-treatment processes, including PPE

how to obtain MSDS

types of masking and barrier materials

types of pre-treatment processes

environmental legislation and regulations relating to the storage, use and disposal of hazardous materials.

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