8) Essential Knowledge and Associated Skills (EKAS): This describes the essential skills and knowledge and their level, required for this unit. Evidence shall show that knowledge has been acquired of maintaining high current DC switchgear and equipment. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-TSB27A High current DC equipment and switchgear - maintenance Evidence shall show an understanding of high current DC equipment and switchgear - maintenance to an extent indicated by the following aspects: T1 Safe working on energised low voltage equipment encompassing: Standards, codes, Commonwealth, State/Territory/local government legislation, supply authority regulations and or enterprise requirements Safety precautions specific to working on or near energised low voltage conductors - safe working practices and procedures, identification of hazards, assessment and control of OHS risks, types, selection, maintenance and use of personal protective equipment Work on or near energised LV conductors - types and function of specialised tools, safe working practices when using specialised tools, methods of using specialised tools, safe procedures for work on panels and in cubicles on or near energised LV conductors, release and rescue procedures for work on or near exposed energised LV conductors. T2 Enterprise specific — policy and procedure instructions encompassing: Responsibilities and duty of care of employer and employee relationship Methods of obtaining the up-to-date information on enterprise policy and procedures Rules and regulations Induction into workplace - location of work area and storage area, timetable, uniform, personal well-being, housekeeping rules, emergency procedures, evacuation procedures Techniques when deal with others - working in teams, customer relation, complaint and issues procedures. Overview of enterprise professional development - fire fighting procedures, fatigue management, training and competency development - understanding and promotion T3 Enterprises specific — OHS instructions encompassing: Standards, codes, legislation, supply authority regulations and specific enterprise regulations pertaining to the OHS policies and procedures Methods of obtaining the up-to-date information on enterprise OHS policy and procedures Specific enterprise personal protection equipment - type and application, where and when to be used, method of replacement, responsibility of maintenance including cleaning inspection and testing, emergency response, rescue, evacuation and First Aid procedures Personal well-being – hygiene, fatigue/stress management, drugs/alcohol OHS training - induction training, specific hazard training, specific task or equipment training, emergency and evacuation training, training as part of broader programs such as equipment operation OHS records including audits, inspection reports, workplace health and environmental monitoring records, training and instruction records, manufacturers and suppliers information such as MSDSs, registers, maintenance reports, workers compensation and rehabilitation records and First Aid/medical records T4 Enterprises specific — technical drawing and documents encompassing: Types and application of enterprise specific drawings and documents - electrical and electronic drawings, mechanical drawings, project charts, schedules, graphs, technical manuals and catalogues Instruction/worksheets sheets - types and application of enterprise specific symbols and diagrams Title box - description of parts and version control. T5 Enterprise specific switching diagrams and drawing encompassing: Types and application of enterprise specific switching drawings and documents - wiring and schematic diagrams and switching symbols, mechanical drawings dealing with switching operations, project charts, switching schedules, graphs, technical manuals and catalogues, instruction/work sheets. Interpretation of different system switching diagrams - LV system switching diagrams, DC traction supply sectioning diagrams, HV transmission and distribution system symbols and feeder plans, processes of updating switching diagrams T6 Enterprises specific specialised tools encompassing: Legislation, Standards, codes, legislation, supply authority regulations and specific enterprise regulations pertaining to the use and care of specialised tools ( voltage detectors; polarity testers, phase rotation) Characteristics, capabilities and application of specialised tools for a particular job Safety policies, procedures and precautions with regards to using, transporting and storage of specialised tools Selection methods for obtaining the correct specialised tool for the particular job including during procurement, purchasing and or hiring arrangements Techniques in pre-use inspection on the serviceability of specialised tools Techniques in the selection, use, maintenance, and care and storage of specialised tools Identifying OHS hazards, assessing and controlling risks associated with their use Techniques for the safe use of specialised power tools. T7 Enterprise Specific Equipment Installation Procedures encompassing: Standards, codes, legislation, supply authority regulations and or enterprise requirements applicable to equipment installation Requirements for the use of manuals, substation diagrams/plans and drawings Types, characteristics and capabilities of HV substation equipment to be installed Identification of components within the equipment to be Installed and associated control housings Use, characteristics and capabilities of specialised tools and equipment Enterprise Specific Policies and Procedures for equipment to be installed Control equipment and auxiliary relays, flags and alarms Techniques in evaluating serviceability of equipment to be Installed Safety precautions when testing and measuring equipment to be Installed - safe working practices and procedures, identification of hazards, assessment and control of OHS risks, types, selection, maintenance and use of personal protective equipment, responsibilities and protocols, safe working clearances Remote and local operating principles and conventions T8 Enterprise Specific Data Management Processes encompassing: Standards, codes, legislation, supply authority regulations and or enterprise requirements applicable to Data Management Requirements for the use of manuals, substation diagrams/plans and drawings Types of enterprise specific computer software Techniques in storing and retrieving data and reports from the computer Techniques in using the Data Management systems in following necessary commands and protocols in accordance with the Enterprise Specific Procedures Calculation of results and data measurements using the computer Techniques in the preparation of preliminary works creation and closure. T9 Substation DC circuit breaker principles encompassing: Standards, codes, Commonwealth/State/Territory legislation, supply authority regulations and or enterprise requirements associated with the DC circuit breakers Types of DC CB’s - self and withdrawable types Characteristics of DC CB’s - purpose of DC CB’s, application of DC CB’s Principles of operation of different types of DC CB’s - arc expulsion versus arc containment, latched versus magnetically held, advantages and disadvantages of different types, fixed or withdrawable, protection/diagnostic technology. Principles of operation of high speed DC CB – characteristics, calibration How DC CB’s are designated - feeder, rectifier, EDR, bus-section and negative breakers, auto-reclose or non auto-reclose type Type and function of DC CB peripheral components - delta I relays, busbar, control wiring, trunk and associated plug/receptacle Identification, characteristics, application and care of DC CB components - holding coils, closing coils, contactors, resistors, arc chutes, blow-out coils, arcing contacts, main contacts, braids, moving arm, pole face, arcing horns, electronic cards, dashpots, fingers, diode strings, fuses, insulators, latching mechanisms, motors, wiring, relays Characteristics, application and care of hand and specialised tools used on DC CB’s - combination/multigrips/long nose pliers, side cutters, screwdrivers, wire strippers, crimpers, knife, hacksaw, hammers, mallets, levels, tape measures, spanners, T-wrench, pistol drills, battery drills, heat gun, de-soldering tools and soldering iron/torches, Allen keys, socket spanners, gauges, feeler gauges and specialist tools supplied by the manufacturers Characteristics, application and care of test and measurement instruments used on DC CB’s - multimeters, tong testers, ammeters, voltmeters, ohmmeters, test lamps, high and low voltage insulation resistance/ continuity testers, earth resistance tester, Ductor, drop-out test sets. T10 Maintenance of substation DC circuit breakers and associated equipment encompassing: Standards, codes, Commonwealth/State/Territory legislation, supply authority regulations and or enterprise requirements associated with the maintenance of DC circuit breakers Requirements for the use and interpretation of manuals, system diagrams/plans and drawings - 1500V sectioning diagrams, substation HV operating diagrams, substation arrangement diagrams and layout drawings, technical/manufactures’ specifications, maintenance instructions/schedules. Relationship and function of DC CB’s equipment/component interface - DC CB frame, connection fingers, associated busbar, physical arrangements and clearances. Safety precautions when undertaking maintenance procedures on DC CB’s - safe working practices, Occupational Health and Safety hazards and precautions, identification of hazards, assessing and controlling risks, types, selection, maintenance and uses of personnel protective equipment, permit to work systems and isolation procedures, types and function of specialised equipment, safe working practices when using specialised equipment, emergency response and rescue including First Aid etc. Techniques in maintenance of DC CB’s - closing and opening operations, range settings, adjustments and calibration, spring settings, main contact arrangement and auxiliary contact arrangement, arc chute inspection and procedures, basic fault finding and repair/adjustment techniques, control cards, their uses, application and fault finding, earthing requirements and techniques Techniques in testing and commissioning of DC CB’s - supply authority regulations and or enterprise requirements, standards and procedures. T11 Installation of substation Direct Current circuit breakers (DC CB’s) and associated equipment encompassing: Standards, codes, legislation, supply authority regulations and or enterprise requirements pertaining to the installation of substation Direct Current circuit breakers (DC CB’s) Safety precautions when installing substation Direct Current circuit breakers (DC CB’s) - safe operation procedures, Occupational Health and Safety hazards and precautions, identification of hazards, assessing and controlling risks, types, selection, maintenance and uses of personnel protective equipment, permit to work systems and isolation procedures, safe working practices when using specialised equipment, emergency response and rescue including First Aid etc. Use and interpretation of technical manuals and diagrams - manufacturer/Enterprise Manuals, block, wiring and schematic diagrams, 1500 V sectioning diagrams, substation HV operating diagrams, substation arrangement diagrams and layout drawings, technical/manufactures’ specifications, maintenance instructions/schedules Techniques in the safe installation of DC CB’s. |