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Elements and Performance Criteria

1. Prepare for overhaul/repair of switchgear/control gear
   • WHS/OHS processes and workplace procedures for a given work area are identified and applied
2. Existing WHS/OHS risk control measures and workplace procedures in preparation for work are followed
3. Safety hazards that have not previously been identified are noted on job safety assessments, risks assessed and risk control measures implemented
4. Workplace instructions on the scope of overhaul and/or repair work are received and expected outcomes of work discussed with appropriate person/s
5. Appropriate person/s is consulted to ensure the work is coordinated effectively with others involved on the worksite
6. Switchgear/control gear service and repair documentation is read and applied
7. Sources of materials required for work are determined in accordance with workplace procedures
8. Tools, equipment and testing devices needed for work are obtained in accordance with workplace procedures and checked for correct operation and safety
9. Overhaul switchgear/control gear
   • WHS/OHS risk control measures and workplace procedures for carrying out repair work are followed
10. Need to inspect, test or measure live electrical work is determined in accordance with WHS/OHS requirements and workplace procedures
11. Circuits/machines/plant are checked and isolated in accordance with WHS/OHS requirements and workplace procedures
12. Switchgear and control gear are dismantled, parts tagged and stored to prevent loss or damage
13. Serviceability of switchgear/control gear components is determined by measurement tests and inspections and results recorded in accordance with workplace procedures
14. Materials/replacement parts required to complete repair work are sourced and obtained in accordance with workplace procedures
15. Repairs are inspected and tested in accordance with workplace procedures
16. Overhaul/repair specifications and work instructions are documented in accordance with workplace procedures
17. Document overhaul/repair work
    • WHS/OHS work completion risk control measures and workplace procedures are followed
18. Reusable, faulty or worn components are tagged and despatched for repair in accordance with workplace procedures
19. Repair work is documented in accordance with workplace requirements, stating whether the switchgear/control gear complies with the overhaul specifications and relevant industry standards

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment. Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.
overhauling and repair majoring switchgear and control gear must include at least two types of the following switchgear and control gear:	low voltage (LV) switchgear and control gear rated above 20 kA any high voltage (HV) switchgear and control gear

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Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least two separate occasions and include:

applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures and practices, including using of risk control measures applying sustainable energy principles and practices documenting overhaul/repair work overhauling and repairing major switchgear/control gear, including: completing service documentation correctly dealing with unplanned events in accordance with workplace procedures in a manner that minimises risk to personnel and equipment determining the state/serviceability of switchgear/control gear correctly interpreting service and repair documentation correctly repairing switchgear/control gear in accordance with relevant industry standards preparing for overhaul/repair of switchgear/control gear.

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Knowledge Evidence

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

types and applications of switchgear and control gear operating principles of switchgear and control gear interlocking systems, including: external interlocking systems such as Castell key systems internal interlocking systems for either safety or that operate in conjunction with Castell key systems control and protection of switchgear and control gear installation requirements, including: operating specifications for equipment areas requiring repairs and maintenance determining if repairs/maintenance are to be carried in situ or in workshop environment relevant legislation and standards applicable to the installation WHS/OHS issues with regard to removing/re-installing heavy equipment electrical safety issues with regard to removing/re-installing equipment understanding of CFC units electrical switchgear and control gear protection methods, including: the operation of switchgear when it opens under load the settings and operation required for both magnetic short circuit and thermal overload with equipment determining the earth fault-loop impedance requirements required to keep touch voltage values within requirements thermal imaging techniques time/current curves from manufacturer specifications equipment to safely test switchgear after repairs or maintenance effectiveness of arc suppression installed within the equipment modern types of switchgear that are computer controlled and programmed modern types of switchgear that are interconnected to other protective devices certification process for any repair or maintenance work performed phase-failure systems verifying the correct fault-level for the installation is consistent with the kiloamp (kA) rating of the equipment x-ray and ultrasonic detection systems with regard to metallurgy different types of lubricants required for different locations, temperatures and humidity electrical safe working practices of working safely on or around electrical equipment, including: determining safe working standards and codes of practice for equipment and installations over 20 kA WHS/OHS requirements for equipment and installations over 20 kA working knowledge of operating within the vicinity of live conductors, such as barriers procedures for working on switchgear over 20 kA risks and control measures associated with harmful dusts and airborne contaminants, including thermal insulation, fibrous cement materials and asbestos, and other fibre-reinforced switchboard materials checks and storage methods for maintaining the safety of testing devices.

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