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 energised high voltage distribution overhead electrical apparatus (glove). All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-TDP14A Live line working up to 33 kV with glove and barrier Evidence shall show an understanding of live lines working up to33 kV with glove and barrier to an extent indicated by the following aspects: T1 Legislation and Regulations encompassing: Legislation, standards and codes Supply authority regulations Industry guidelines and enterprise requirements T2 Safety Precautions for High Voltage Live Work associated to Glove and Barrier encompassing: Minimum approach distances OH&S hazard and precautions Assessing and controlling risks Personnel protective equipment High Voltage live work access Auto-reclose function Fault current protective devices Integrity of insulation Specialised equipment and tools Inspection of equipment and tools Use of specialised equipment and tools Work team communication Use of safety observers Emergency response, first aid and rescue T3 Policies and procedures for glove and barrier work up to and including 33 kV encompassing: Policies, procedures and practices Definition of terms Responsibilities of personnel Types of structures Types of equipment and compliance T4 Glove and barrier techniques up to and including 33 kV encompassing: High Voltage insulators High Voltage cross arms High Voltage bridge connections Installation and maintenance of equipment Temporary Midspan switching devices Erection and replacement of poles Replacement of conductors and cables High voltage armour rods and line guards Conversion intermediate to strain construction Switching devices T5 Safety precautions for plant, equipment and tools encompassing: Safe working clearances Identification of OH&S hazards Assessing and controlling risks and hazards Personal protective equipment T6 Identification and serviceability of plant, equipment and tools encompassing: Identification of plant, equipment and tools Serviceability of plant equipment and tools T7 Operational use of plant, equipment and tools encompassing: Conductor supports Selecting conductor support method Calculation of loads Effects of secondary loading Effects of resultant forces Conductor support rigging procedures Displacement of conductors utilising rigging equipment T8 Electrical and electrostatic principles encompassing: Relationship with current, voltage and resistance as related to distribution lines Phase voltage and respective line voltages Production of an electric field T9 High voltage insulation encompassing: Construction of disc insulators Construction of a polymeric insulator Checking integrity of insulation prior to work commencement Effects of electrical fields on disc insulators Number of disc insulators needed Performance of a failed disc insulator on the line and system Minimum number of discs per string Detecting a failed disc insulators T10 Effects of electrostatic Induction on the human body encompassing: Electrostatic induction and the human body Application of a faraday cage T11 Switching surges and magnetic fields encompassing: Lightning and switching surges Magnetic fields T12 High Voltage switching fundamentals encompassing: Standards and requirements - Standards, codes, legislation, supply authority regulations, industry guidelines and enterprise requirements Manuals system diagrams/plans and drawings High Voltage live work access authority/permit system - Operational forms - High voltage switching or outage requests Fault current protection devices - main and backup devices, components, types, categories, applications, functions, principle of operation, co-ordination, zoning, auto-reclosing suppression, paralleling and separating and ring verses radial feeders Disabling auto-reclose function Network interconnectors Test instruments Types and categories of switchgear - application, function and operating capabilities; restrictions Operate switching apparatus - identifying hazards, assessing risks, systematic and defensive techniques, mobile radio, double insulation High Voltage electrical faults: types, causes and effects T13 High voltage SWER system encompassing: Components Circuit arrangement Operation principles Faulty SWER earth system SWER substations T14 Safety Observer principles encompassing: Duties Techniques Minimum Approach Distances (MAD) Minimum safe working distance from vegetation T15 Feeder automation system encompassing: Function Main components Field devices SCADA systems, interlocks and operation T16 System Control and Data Acquisition (SCADA) systems encompassing: Function and main components Security interlocks and access restrictions Switching apparatus and retrieving data operation Field devices operation T17 Teamwork High Voltage Live Work |