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Elements and Performance Criteria

  1. Identify corrosion damage
  2. Remove light corrosion
  3. Clean area and equipment

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

Signs of corrosion include:

Surface deformed

Paint blistered or flaked

Powder

Discolouration

Types of corrosion include:

Uniform etch

Pitting

Intergranular

Exfoliation

Filiform

Galvanic

WHS requirements are identified from:

Commonwealth/state/territory WHS legislation, regulations and codes

Procedures manuals

Safety manuals

Work instructions

Maintenance organisation manuals

Material safety data sheets (MSDS)

Defence regulations and instructions

Standing instructions

Materials and tools include:

Micro grinder

Sanders

Plastic media blasting equipment

Abrasive pads

Wet/dry abrasive papers

Chemicals

PPE applicable to task

Selected removal methods include:

Light mechanical using micro grinder, sander or plastic media blasting

Manual removal using wet/dry abrasive papers or abrasive pads

Chemical

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 manuals

Procedures manuals

Work instructions

Relevant Defence regulations and instructions

Standing instructions

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 light corrosion removal, including the selection and correct use of PPE

recognising types of corrosion and of damage that exceeds light surface corrosion

applying enterprise procedures for removal of light corrosion

selection and use of applicable corrosion removal methods, equipment and tools

using MSDS

cleaning of surfaces following corrosion removal

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 tasks involving the removal of light corrosion damage from the surfaces of aircraft structure. 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 corrosion removal procedures and apply them in practice is critical.

This is to be demonstrated through corrosion removal using mechanical, manual and chemical means across a range of aircraft tasks.

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 maintenance publications

WHS procedures relating to the removal of aerospace coatings, including PPE

how to obtain MSDS

types of chemicals used for corrosion removal and methods of application

mechanical methods that can be used for corrosion removal

cleaning methods following corrosion removal

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