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320 - Electrical maintenance on ships (1 Understand power distribution…

- - - - 4 Understand how to maintain electrical systems
        
        !EXAM!
        
        4.1 describe legislation relating to electrical equipment and systems
        
         legislation: Electricity at Work Regulations, IEE Wiring Regulations.
        
        4.2 describe resources required for maintenance activities
        
         resources: Tools, equipment, materials, information, documentation.
        
        4.3 explain control measures required to minimise health and safety risks
        
         control measures: Risk assessment, Method statements, PPE, Permit to work.
        
        4.4 describe how to dismantle electrical systems for maintenance activities
        
         dismantle: Safe isolation, releasing stored energy, supporting components,removing components, laying out components, proof marking removed components.
        
        4.5 describe signs of electrical component non-compliance
        
         non-compliance: Erosion, wear, corrosion, discolouration, damage (mechanical/heat), contamination, failure.
        
        4.6 describe how to complete electrical system maintenance activities
        
         maintenance: Inspection, tolerance/performance checks, corrosion checks,mechanical damage repair, termination/fastener security (torque setting), lubrication, cleaning, component replacement, base overhaul.
        
        4.7 describe how to assemble electrical systems following maintenance activities
        
         assemble: Sequence of assembly, positioning components, setting, aligning and adjusting components, securing components.
        
        4.8 describe re-commissioning operations to bring system on-line.
        
         re-commissioning: Visual inspection, electrical testing, re-energising procedures
        (sequencing), functional tests.
      - 3.1 describe safe systems of work for electrical maintenance on ships
        
         safe systems of work: Programme of work by authorised person, switching schedule, permit to work, means of isolation (from mains, local), system earthing, use of earth bonding leads.
      - 3.2 explain safety considerations for the maintenance of electrical systems
        
         considerations: Access, safe working area, handling of components, IP rating of equipment, ventilation, waste disposal.
      - 3.3 explain safety precautions required for inspecting and testing electrical equipment.
        
         safety precautions: Safe isolation, lock-off tag-out, CAT rated test equipment, PPE.
    - -  application: Use, limitations, benefits.
      -  luminaires: GLS lamps, mercury vapour lighting, sodium vapour lighting, energy saving lamps, LED lighting tungsten, fluorescent.
    - -  application: Use, limitations, benefits.
      -  electrical machines: Motors (a.c./d.c.) single-phase, three-phase, generators.
    - -  electrical components: Power factor correction equipment, circuit protection devices, isolators, switches, switchgear, cabling, containment systems.
    - -  control: Direct on line starting, reduced voltage starting, variable speed control, variable frequency control.