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Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Remove oxygen system components
   • Oxygen system is rendered safe and prepared in accordance with the applicable maintenance manual and isolation tags are fitted where necessary to ensure personnel safety
   • Removal of oxygen system components is carried out in accordance with the applicable maintenance manual
   • Required maintenance documentation is completed and processed in accordance with standard enterprise procedures
   • Removed components are tagged, packaged or discarded in accordance with specified procedures
2. Install aircraft oxygen system components
   • Oxygen system components to be installed are checked to confirm correct part numbers, modification status, serviceability and shelf life
   • Oxygen system components to be installed are free from contamination and inspected for damaged flair ends and fittings
   • Component installation is physically carried out in accordance with the applicable maintenance manual
   • System is reinstated to correct physical condition in preparation for testing, as necessary
   • Required maintenance documentation is completed and processed in accordance with standard enterprise procedures

Required Skills

Required skills

Look for evidence that confirms skills in applying appropriate OHS practices and using approved maintenance documentation and aircraft publications relating to aircraft oxygen systems and components demonstrating the procedure to replenish a dry breathing oxygen system including correct identification of oxygen ground trolleys maximum charging pressures for low and high pressure systems safety precautions to be adhered to during replenishment correct order of procedural replenishment steps demonstrating the procedure to purge a dry breathing oxygen system including reasons for the requirement to undertake a purging operation identification of acceptable system purging gases safety precautions to be adhered to during purging employing correct techniques when purging oxygen storage cylinders or systems

Required knowledge

Look for evidence that confirms knowledge of OHS practices relevant to oxygen system maintenance component attachment methods connection of hardware and couplings oxygen system isolation the properties of aircraft oxygen and requirements for aircrewpassengers the layout of low and highpressure dry breathing oxygen systems and components the methods by which gaseous dry breathing oxygen is stored in both the aircraft and within the workplace environment Reference to storage trolleys aircraft cylinders and chemical oxygen cylinders is required the methods used to locate identify and access oxygen system components for removal and installation relevant maintenance manuals relevant regulatory requirements and standard procedures

Evidence Required

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	A person who demonstrates competency in this unit must be able to remove and install the components of aircraft oxygen systems while observing all relevant safety and component handling precautions
Critical aspects for assessment and evidence required to demonstrate competency in this unit	It is essential that oxygen system cleanliness requirements and safety precautions applicable to system component handling are fully observed understood and complied with These cleanliness requirements extend to all tooling and hardware associated with oxygen system maintenance Evidence of transferability of skills and knowledge related to removal and installation is essential This is to be demonstrated by application across a range of aircraft oxygen system components listed in the Range Statement An understanding of the attachment methods connection hardware and the need for adjustment or rigging and system operation as it relates to the work must be demonstrated before undertaking any action The work plan should take account of applicable safety and quality requirements in accordance with the industry and regulatory standards A person cannot be assessed as competent until it can be demonstrated to the satisfaction of the workplace assessor that the relevant elements of the unit of competency are being achieved under routine supervision on at least one item from each of Groups and Groups and may be omitted where they are not applicable to the enterprise This shall be established via the records in the Log of Industrial Experience and Achievement or where appropriate an equivalent industry Evidence Guide
Context of and specific resources for assessment	Competency should be assessed in the workplace or simulated workplace using tools and equipment specified in the maintenance manuals It is expected that dedicated tools test and ground support equipment is used in routine oxygen situations
Method of assessment
Guidance information for assessment

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Range Statement

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.
Note	Range statements listed below are numbered to facilitate specification of the assessment requirements included in the Evidence Guide
Oxygen system components	Oxygen system components may include: 1. Oxygen pressure cylinders, valves, gauges 2. Regulators, masks (including other integrated systems), pipes, hoses and fittings 3. Chemical generators 4. LDBO converters
	Application of this unit may relate to: scheduled or unscheduled maintenance activities individual or team-related activities
Procedures and requirements	Refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

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