Google Links

Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Prepare/plan to maintain traction network wiring systems
   • Works schedule(s), including drawings, plans, requirements, established procedures, and material lists, are received, analysed and confirmed, if necessary, by site inspection.
   • Relevant requirements and established procedures for the work are communicated to all personnel and identified for all work sites.
   • OHS policies and procedures related to requirements and established procedures for the maintenance of traction network wiring systems are obtained and confirmed for the purposes of the work to be performed and communicated.
   • Work is prioritised and sequenced following consultation with others for completion within acceptable timeframes and in accordance with established procedures.
   • Hazards are identified; OHS risks assessed and control measures are prioritised, implemented and monitored including emergency exits kept clear according to established procedures.
   • Relevant work permits are obtained to access and perform work according to requirements and/or established procedures.
   • Resources including personnel, equipment, tools and personal protective equipment required for the job are obtained and confirmed in working order.
   • Relevant personnel at worksite are confirmed current in CPR, First Aid, and other rescue procedures and related work procedures according to requirements.
   • Liaison and communication issues with other authorised personnel, authorities, clients and land owners are resolved to carry out work where necessary.
   • Site is prepared according to the work schedule and to minimise risk and damage to property, commerce, and individuals in accordance with established procedures.
   • Personnel participating in the work, including plant operators and contractors, are fully briefed and respective responsibilities confirmed where applicable in accordance with established procedures.
   • Rail/Road signs, barriers and warning devices are positioned in accordance with requirements.
   • Environmental constraints applicable to work are identified and control measures applied
2. Carry out the maintenance of traction network wiring systems
   • OHS and sustainable energy principles and practices to reduce the incidents of accidents and minimise waste are monitored and followed in accordance with requirements and/or established procedures.
   • Lifting, climbing, working aloft, and use of power tools/equipment, techniques and practices are safely followed and, currency according to requirements confirmed.
   • Systems and circuits are isolated as required, proved safe to work on in accordance with the requirements/permits and established procedures.
   • Essential knowledge and associated skills are applied in the safe maintenance of traction network wiring systems to ensure completion in an agreed timeframe and, to quality standards with a minimum of waste according to requirements.
   • Maintenance, including repair and/or replacement of overhead traction wiring systems, including the modification and re-adjustment of overhead traction conductors is carried out, in accordance with the work schedule and requirements/established procedures.
   • Profiling completed according to established procedures.
   • Hazard warnings and safety signs are recognised and hazards and assessed OHS risks are reported to the immediate authorised persons for directions according to established procedures.
   • Unplanned events in the maintenance of traction network wiring systems are undertaken within the scope of established procedures.
   • Known solutions to a variety of problems are applied using acquired essential knowledge and associated skills.
   • Ongoing checks of quality of the work are undertaken in accordance with instructions and established procedures.
3. Complete the maintenance of traction network wiring systems
   • Work undertaken is checked against design drawings and works schedule for conformance with requirements and anomalies reported in accordance with established procedures.
   • Accidents and/or injuries are reported in accordance with requirements/established procedures, where applicable.
   • Work site is rehabilitated, cleaned up and made safe in accordance with established procedures.
   • Tools, equipment and any surplus resources and materials are, where appropriate, cleaned, checked and returned to storage in accordance with established procedures.
   • Relevant work permit(s) are signed off and, the overhead traction network wiring system is returned to service in accordance with requirements.
   • Works completion records, reports, as installed /modified drawing and/or documentation and information are finalised and processed and appropriate personnel notified.

Required Skills

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 of maintaining overhead traction wiring systems has been acquired All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies KSTRTA Electrical Rail Traction Wiring Systems Maintenance KS01-TRT36A Electrical Rail Traction Wiring Systems Maintenance Evidence shall show an understanding of electrical rail traction wiring systems maintenance to an extent indicated by the following aspects T Standards codes legislation supply authority regulations and or enterprise requirements applicable to the electrical traction T Electrical traction voltage and current circuit paths encompassing Transmission distribution voltages Traction supply system and voltages Return and stay current paths including electrolysis T Relationship of sectioning section insulator and overlapsair gaps in a traction power system T Traction power system components encompassing Function of transformerrectifiers Configuration and purpose of traction overhead wiring systems Function of isolatorsswitches Function of the circuit breaker Reliability and security of traction supply T Traction power system electrical protection encompassing Load protection Surge protection Fault protection Electrolytic protection T Impact of electromagnetic forces encompassing Telephone interference Effects of televisionradio interference T Insulation methods in a traction power system encompassing Types of electrical insulation Insulation coordination Reason for electrical clearances T Bonding systems structure bonds traction bondsbonding cables and impedance bonds T Ancillary conductors feeder wires current return path and other ancillary conductors Relationship of current and potential drapersjumpers to the traction power system Methods to achieving smooth current collector transitions and interfaces T Dynamic and static forces encompassing Types that effect traction systems Effects on effective registration Techniques to minimise the adverse effects T Overhead traction equipment encompassing Types switchesisolators fuse switches links section insulators and fuses Purpose T Types of overhead traction components encompassing Types cantilever hardware droppers bay components portal hardware head span hardware section insulators neutral sections registration fittings steady span tension regulators and cross spans Purposes T Types of conductors used for overhead wiring such as harddrawn CAD and tinbearing copper aluminium steel and other alloyed conductors T Types of traction wire support structures that may consist of portals cantilevers drop pieces head spans cross spans and pulloffs T Ancillary equipment Types surge arresters booster and auxiliary transformers Purpose T Methods for replacing conductors that may consist the use of Preformed fittings Compression fittings Wedged fittings Bolted splices Lugs Bolted clamps T Methods for replacing components such as Feeders Droppers Dissimilar conductors Jumpers Surge arresters T Use of plant and equipment for maintenance work such as Elevating work platforms Ladders Works trains Railmounted overhead wiring equipmentvehicles Roadrail height access machineryvehicles Voltage detectors Micrometergauges Tension wrenches Dynamometers Other specialised tools

Evidence Required

This provides essential advice for assessment of the competency standard unit and must be read in conjunction with the Performance Criteria and the range statement of the competency standard unit and the Training Package Assessment Guidelines The Evidence Guide forms an integral part of this Competency Standard Unit and shall be used in conjunction with all component parts of this unit and performed in accordance with the Assessment Guidelines of this Training Package

Overview of Assessment

Longitudinal competency development approaches to assessment such as Profiling require data to be reliably gathered in a form that can be consistently interpreted over time This approach is best utilised in Apprenticeship programs and reduces assessment intervention It is the Industrys preferred model for apprenticeships However where summative or final assessment is used it is to include the application of the competency in the normal work environment or at a minimum the application of the competency in a realistically simulated work environment It is recognised that in some circumstances assessment in part or full can occur outside the workplace However it must be in accord with Industry and Regulatory policy in this regard Methods chosen for a particular assessment will be influenced by various factors These include the extent of the assessment the most effective locations for the assessment activities to take place access to physical resources additional safety measures that may be required and the critical nature of the competencies being assessed The critical safety nature of working with electricity electrical equipment gas or any other hazardous substancematerial carries risk in deeming a person competent Hence sources of evidence need to be rich in nature so as to minimise error in judgment Activities associated with normal every day work have a bearing on the decision as to how much and how detailed the data gathered will contribute to its richness Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practiced These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments Sample assessment instruments are included for Assessors in the Assessment Guidelines of this Training Package

Critical aspects of evidence required to demonstrate competency in this unit
	Before the critical aspects of evidence are considered all prerequisites shall be met Evidence for competence in this unit shall be considered holistically Each element and associated Performance Criteria shall be demonstrated on at least two occasions in accordance with the Assessment Guidelines UET Evidence shall also comprise A representative body of Performance Criteria demonstrated within the timeframes typically expected of the discipline work function and industrial environment In particular this shall incorporate evidence that shows a candidate is able to Implement Occupational Health and Safety workplace procedures and practices including the use of risk control measures as specified in the Performance Criteria and range and Apply sustainable energy principles and practices as specified in the Performance Criteria and range and Demonstrate an understanding of the essential knowledge and associated skills as described in this unit to such an extent that the learners performance outcome is reported in accordance with the preferred approach namely a percentile graded result where required by the regulated environment and Demonstrate an appropriate level of employability skills and Conduct work observing the relevant Anti Discrimination legislation regulations policies and workplace procedures and Demonstrated performance across a representative range of contexts from the prescribed items below
		Range of toolsequipmentmaterialsproceduresworkplacesother variables
		Group No	The minimum number of items on which skill is to be demonstrated	Item List
		A	Maintain at least four of the following	Support structure Span Section insulator Neutral section Midpoint anchor Support equipment Tension regulators Stayguy wire Tramway support network
		B	With regards to A incorporate at least two of the following	Catenary Dropper Contacttrolley Feeder Earth conductor Drapepotential jumper must do
		C	With regards to A incorporate at least one of the following	Elevating work platform Ladder Mobile platform
		D	With regards to A incorporate at least two of the following	Tensioning equipment Specialised tools Ropes Geometry profiling equipment must do
		E	At least one occasion	Dealing with an unplanned event by drawing on essential knowledge and associated skills to provide appropriate solutions incorporated in the holistic assessment with the above listed items

Context of and specific resources for assessment

This unit should be assessed as it relates to normal work practice using procedures information and resources typical of a workplace This should include OHS policy and work procedures and instructions Suitable work environment facilities equipment and materials to undertake actual maintenance of traction network wiring systems In addition to the resources listed above in context of and specific resources for assessment evidence should show demonstrated competency working below ground in limited spaces with different structuralconstruction types and method and in a variety of environments

Method of assessment

This Competency Standard Unit shall be assessed by methods given in Volume Part Assessment Guidelines Note Competent performance with inherent safe working practices is expected in the Transmission Distribution and Rail Traction Industry This requires that the specified essential knowledge and associated skills are assessed in a structured environment which is primarily intended for learningassessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and associated skills described in this unit

Concurrent assessment and relationship with other units
	For optimisation of training and assessment effort competence in this unit may be assessed concurrently with the following units UETTDRRTA Maintain traction network equipment and components UETTDRRT37A Maintain traction network equipment and components

---

Range Statement

10) This relates to the competency standard unit 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 maintenance of traction network wiring systems as it relates to the correct registration of the contact wire with respect to the current collectors Types of conductor may include HD, CAD, tin bearing and magnesium copper, aluminium, steel, aluminium conductor steel reinforced (ACSR), insulated screened and unscreened cable and pilot and control cables. Materials and equipment may include porcelain, glass, ceramic, fibre glass and composite insulators, steel, brass, stainless steel, neoprene, copper, cast and galvanized fittings, drums, pulleys, hooks, yoke plate, line grips, tensioning devices, ropes, slings, hydraulic/manual crimping and cutting tools, specialized tools and dynamometers; Conductors and support wires include droppers wire, catenary wire, contact/trolley wire, earth wire, feeder wire, drape/potential jumper wire, stay wire, cross-span, networks and head span wire. Associated equipment to conductors may include registration arms, midpoint anchors, section insulators, neutral sections, supports, cantilevers, portals, drop verticals, surge diverters and tensioning devices. Maintenance may include the removal, repair and replacement of cables, conductors and associated hardware. Conductors and support wires include droppers wire, catenary wire, contact/trolley wire, earth wire, feeder wire, drape/potential jumper wire, stay wire, cross-span, networks and head span wire. Associated equipment to conductors may include registration arms, midpoint anchors, section insulators, neutral sections, supports, cantilevers, portals, drop verticals, surge diverters and tensioning devices. Plant may include ladders, elevating work platform, winches and capstans, specialist tensioning stringing equipment, cable trailers and drum stands, rail and road rail mounted overhead wiring vehicles. Installing tension regulators encompasses fitting, positioning and securing weight chains and pulley systems. Permits may include access permits, permits to work and or other relevant permits and documents by recognised bodies. Profiling encompasses sag, tension, encumbrances, offsets, cants and registration which involves horizontal and vertical calibration of the contact wire or trolley wire to a design height and stagger in reference to the running rail. Current collectors may include pantographs and tram trolley poles. 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 of 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

---