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Elements and Performance Criteria

1. Determine requirements
   • Component defect reports (removal tags) or customer order are correctly interpreted and matched by part and serial numbers
   • System components are inspected and/or operated through prescribed test procedures to establish serviceability or confirm defects, as required
   • Modification status is clearly established to assist in determining the overhaul requirements for the components
   • Extent of overhaul or repair is correctly identified and documented
2. Troubleshoot oxygen system components
   • Available information from maintenance records and test results is used, where necessary, to assist in fault determination
   • Logical processes are used to ensure efficient and accurate troubleshooting
   • Specialist advice is obtained, where required, to assist with, or confirm, the fault and rectification requirement
   • System component faults are located and the causes of the faults are clearly identified
   • Fault rectification requirements are determined to assist in planning the repair
3. Dismantle and inspect oxygen system components
   • System component parts are dismantled in accordance with maintenance manuals while observing all relevant work health and safety (WHS) requirements
   • Component parts are assessed for serviceability in accordance with the relevant maintenance documentation
   • Parts requiring specialist repair are tagged and repair instructions are accurately specified
   • Parts lists are compiled and processed in accordance with standard enterprise procedures
4. Repair and/or modify oxygen system components
   • System component parts are repaired or replaced in accordance with the relevant maintenance documentation
   • Modification of components or parts is undertaken, where required, by relevant manufacturer's bulletins or procedures
5. Assemble, test and adjust oxygen system components
   • Assembly of component parts is carried out within specified tolerances and in accordance with the appropriate maintenance documents
   • System components are adjusted or calibrated to operate within prescribed specifications
   • Finished components are tagged, sealed and packaged in accordance with specified procedures
   • Required maintenance documentation and modification records are completed and processed in accordance with standard enterprise procedures

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.
Oxygen system components and related activities include:	Pressure vessels (testing and charging) Regulators, control valves and indicators Chemical oxygen generators Product hygiene
Procedures and requirements include:	Industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

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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 relevant WHS practices

using approved repair/overhaul procedures and processes relating to oxygen components

recognising the serviceability state and repair or overhaul requirements for oxygen pressure cylinders, valves, gauges, chemical generators, regulators, masks, pipes, hoses and fittings, and liquid dry breathing oxygen (LDBO) converters

applying logic processes, and using test equipment and appropriate wiring diagrams and manuals to isolate component faults

performing component testing to isolate/confirm component fault and assess post-repair/overhaul serviceability

correctly disassembling, inspecting component parts, repairing/replacing/modifying component parts and assembling oxygen components

applying product hygiene procedures.

The underlying skills inherent in this unit should be transferable across a range of repair or overhaul applications associated with oxygen system components. It is essential that the maintenance procedures are interpreted and applied to ensure quality and safety standards are fully observed, understood and complied with. Capability to interpret inspection procedures and specifications (allowable limits) and apply them in practice is critical.

Evidence of transferability of skills and knowledge related to repair is essential. This may be demonstrated through application across a representative range of oxygen components as listed in the Assessment Conditions.

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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:

component and system operation

the basic function and operation of oxygen components to enable testing for fault isolation/confirmation, to determine repair or overhaul requirements, and serviceability status post-repair or overhaul

basic principles/functions relating to oxygen components and associated with:

pressure sensitive devices (bellows and controllers)

vacuum system generation

atmosphere and its properties.

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