10) This relates to the unit of competency as a whole providing the range of contexts and conditions to which the Performance Criteria apply. It allows for different work environments and situations that will affect performance. This Competency Standard Unit shall be demonstrated in relation to the installation and maintenance of overhead conductors and cables used on poles and structures. Installation and maintenance may include the stringing, tensioning, terminating of the conductor/cable and the removal, repair and replacement of cables, conductors and associated hardware and includes the cleaning of insulators. May include pre-energised/energisation checks and tests. Visual inspections, diagnosing maintenance work associated with the fault diagnosis, conducting of visual inspections, confirmation of phasing, and the completion of other enterprise tests is also included. It also encompasses the isolation of systems and circuits, the procedure of issuing/accepting electrical access permits and the updating of system data/maintenance records according to requirements and established procedures. Structures include poles and columns. Types of conductor include copper, aluminium, steel, aluminium conductor steel reinforced (ACSR), low voltage aerial bundled cable (LVABC), high voltage aerial bundled cable (HVABC), insulated unscreened cable (IUC), service cable and fibre optic, pilot and control cables. Overhead systems include their associated earthing systems, e.g. MEN and CMEN LV systems, bridging/bonding and conventional and SWER HV systems. Plant may include elevating work platform, winches and capstans, specialist tension stringing equipment, cable trailers and cable drum stands. Testing and recording equipment (LV) includes voltage detectors, tong ammeters, polarity testers, insulation resistance testers, recording meters and phase sequence indicators. Testing and recording equipment (HV) includes phasing sticks, fault indicators, radio frequency interference detectors and voltage detectors. The following constants and variables included in the element/Performance Criteria in this unit are fully described in the Definitions Section 1 of this volume and form an integral part of the Range Statement of this unit: Appropriate and relevant persons (see Personnel) Appropriate authorities Appropriate work platform Assessing risk Assessment Authorisation Confined space Diagnostic, testing and restoration Documenting detail work events, record keeping and or storage of information Drawings and specifications Emergency Environmental and sustainable energy procedures Environmental legislation Environmental management documentation Established procedures Fall prevention Hazards Identifying hazards Inspect Legislation MSDS Notification. OHS practices OHS issues Permits and/or permits to work Personnel Quality assurance systems Requirements Testing procedures Work clearance systems |