Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

UETTDRSB25A Mapping and Delivery Guide
Maintain high voltage power and instrument transformers

Version 1.0
Issue Date: July 2020


Qualification -
Unit of Competency UETTDRSB25A - Maintain high voltage power and instrument transformers
Description 1)Scope:1.1) DescriptorThis Competency Standard Unit covers the maintenance of high voltage power system transformers and instrument transformers including routine diagnostic tests within agreed specifications. It includes maintenance of the associated cooling systems, control and alarm systems and tertiary cabling and/or busbar systems in accordance with enterprise procedures.
Employability Skills 5) The required outcomes described in this unit of competency contain applicable facets of Employability Skills. The Employability Skills Summary of the qualification in which this unit of competency is packaged will assist in identifying Employability Skill requirements.
Learning Outcomes and Application 2)This Competency Standard Unit is intended to augment formally acquired competencies. It is suitable for employment-based programs under an approved contract of training.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites Prerequisite Unit(s)4) Competencies4.1)Granting of competency in this unit shall be made only after competency in the following unit(s) has/have been confirmed.Where pre-requisite pathways have been identified. All competencies in the Common Unit Group must be have been completed plus all the competencies in one (1) of the identified Pathway Unit Group(s):Common Unit GroupUnit Code Unit TitleUEENEEE101A Apply Occupational Health and Safety regulations, codes and practices in the workplaceUEENEEE102A Fabricate, assemble and dismantle utilities industry componentsUEENEEE104A Solve problems in d.c. CircuitsUEENEEE105A Fix and secure electrotechnology equipmentUEENEEE107A Use drawings, diagrams, schedules, standards, codes and specificationsUEENEEE137A Document and apply measures to control OHS risks associated with electrotechnology workUEENEEG006A Solve problems in single and three phase low voltage machinesUEENEEG033A Solve problems in single and three phase electrical apparatus and circuitsUEENEEG063A Arrange circuits, control and protection for general electrical installationsUEENEEG101A Solve problems in electromagnetic devices and related circuitsUEENEEG102A Solve problems in electromagnetic devices and related circuitsUEENEEG106A Terminate cables, cords and accessories for low voltage circuitsUEENEEG108A Trouble-shoot and repair faults in low voltage electrical apparatus and circuitsUEENEEG109A Develop and connect electrical control circuitsUEENEEK142A Apply environmentally and sustainable energy procedures in the energy sectorPathway 1 - ElectricianUEENEEG103A Install low voltage wiring and accessoriesUEENEEG104A Install appliances, switchgear and associated accessories for low voltage electrical installationsUEENEEG105A Verify compliance and functionality of low voltage general electrical installationsUEENEEG107A Select wiring systems and cables for low voltage general electrical installationsPathway 2 – Electrical FitterUEENEEG199A Conduct compliance and functional verification of electrical apparatus and existing circuitsLiteracy and numeracy skills4.2) Participants are best equipped to achieve this unit if they have reading, writing and numeracy skills indicated by the following scales. Description of each scale is given in Volume 2, Part 3 “Literacy and Numeracy”Reading4Writing4Numeracy4
Competency Field
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities
Slides
PPT
Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Prepare/plan to maintain HV power system transformers and instrument transformers
  • Work schedules including drawings, plans, requirements procedures and material lists are acquired, analysed and the extent of work determined.
  • Relevant requirements and established procedures for the work are communicated to all personnel and identified for all work sites.
  • Hazards are identified, OHS risks assessed and control measures are prioritised, implemented and monitored including emergency exits kept clear, to ensure safe systems of work are followed and according to established procedures.
  • Work is prioritised and sequenced for the most efficient and effective outcome following consultation with others for completion within acceptable timeframes, to agreed quality standards and in accordance with established policies and procedures.
  • Risk control measures are identified, prioritised, implemented and evaluated against the work schedule.
  • Resources including personnel, equipment, tools and personal protective equipment required for the job are identified, acquired and confirmed in safe/technical working order.
  • Liaison issues with other personnel and/or authorities are resolved and activities coordinated to facilitate the work.
  • Personnel participating in the work including plant operators and contractors are fully briefed, their respective responsibilities explained and coordinated and appropriate authorisation checked in accordance with established procedures.
  • Work site is prepared according to the work schedule and to minimise risk and damage to property and personnel in accordance with established procedures.
       
Element: Carry out the maintenance of transformers and instrument transformers
  • OHS and sustainable energy principles and practices to reduce the incidence of accidents and minimise waste are implemented and monitored in accordance with established procedures.
  • CPR, Rescue from live electrical apparatus and other related safety procedures are in place according to requirements and established procedures.
  • Safe working documentation is acquired and requirements completed in accordance with established procedures.
  • Lifting, climbing and working aloft, use of power tools/equipment techniques and practices are safely exercised in accordance with established procedures.
  • Hazard warnings and safety signs are recognised and hazards and assessed OHS risks are monitored and preventive action taken and/or appropriate authorities consulted where necessary in accordance with established procedures.
  • Essential knowledge and associated skills are applied for the safe maintenance of HV power system transformers and instrument transformers to ensure completion in an agreed timeframe and, to quality standards with a minimum of waste according to requirements.
  • Transformer/instrument transformer is isolated and maintained in accordance with manufacturers and enterprise procedures and recommendations.
  • Diagnostic measurements are carried out and results interpreted, analysed and recorded as per established procedures.
  • Transformer/instrument transformer is restored in accordance with established policies and procedures.
  • Unplanned events or conditions are responded to in accordance with established procedures.
       
Element: Complete the maintenance of transformers and instrument transformers
  • Work undertaken is checked against work schedule for conformance with requirements, anomalies reported and solutions identified in accordance with established procedures.
  • Safe working documentation is surrendered and transformer/instrument transformer made ready for service.
  • Work site is rehabilitated, cleaned up and confirmed safe in accordance with established procedures.
  • Tools, equipment and any surplus resources and materials are cleaned, checked and returned to storage in accordance with established procedures.
  • Required works completion records, reports and/or documentation and information are completed, processed and appropriate personnel notified in accordance with established procedures.
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

9) 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

9.1)

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 Industry’s 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 substance/material 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

9.2)

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 – UET12”. 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 learner’s 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 tools/equipment/materials/procedures/workplaces/other variables

Group No

The minimum number of items on which skill is to be demonstrated

Item List

A

At least one of the following:

Power transformer

High voltage reactor

B

At least two of the following:

Auxiliary transformer

Current transformer

Voltage transformer

C

At least two of the following:

Insulation resistance tests

Dielectric dissipation factor tests

Low voltage excitation checks

Frequency response analysis

Recovery voltage measurements

Ratio checks

Winding resistance tests

Oil sampling

Low resistance, high current connection testing

D

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

9.3)

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 transformers and instrument transformers

In addition to the resources listed above, in Context of and specific resources for assessment, evidence should show demonstrated competency working:

At realistic heights above ground, i.e. above 3 metres, in limited spaces, with different structural/construction types and method and in a variety of environments.

Method of assessment

9.4)

This Competency Standard Unit shall be assessed by methods given in Volume 1, Part 3 “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 learning/assessment 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

9.5)

There are no concurrent assessment recommendations for this unit.


Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)


Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

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 HV power system transformers and instrument transformers.

All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies.

KS01-TSB25A High voltage power and instrument transformers

Evidence shall show an understanding of high voltage power and instrument transformers 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 Low voltage switching principles encompassing:

Standards, codes, legislation, supply authority regulations and or enterprise requirements applicable to switching of low voltage to a given schedule

Requirements for the use of manuals, system diagrams/plans and drawings - types, characteristics and capabilities of electrical apparatus, use, characteristics and capabilities of specialised tools and testing equipment, LV network interconnectors source of possible backfeed

Low voltage switching techniques - identifying hazards, assessing and controlling risks associated with LV switching operations, electrical access permit(s), operational procedures, earthing procedures

Personnel protective equipment (PPE) for LV switching

T3 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

T4 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

T5 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.

T6 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

T7 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.

T8 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

T9 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.

T10 Fault conditions and symptoms related to the plant and/or equipment type encompassing:

Standards, codes, Commonwealth, State/Territory/local government legislation, supply authority regulations and or enterprise requirements pertaining to typical fault conditions and systems

Interpretation of faults in operating mechanisms which may include drive trains and mechanical power drives, stored energy systems including hydraulic systems, pneumatic systems and mechanical storage systems, accumulators

Interpretation of faults in electrical control systems which may include electro-mechanical relay systems, micro-processor based systems, PLC systems, integrated control systems or combinations of electrical/mechanical systems

Types of electrical systems including AC, DC and combinations of both

Types of fault conditions - failure to operate, failure in service and include the appropriate procedures for work on in service plant/equipment

Types of symptoms - alarms, relay flags, mechanical defects, insulation deterioration, leaks, over-pressure, under pressure, out of tolerance measurements and checks.

T11 Substation equipment components and materials related to the plant and/or equipment type encompassing:

Types of components - complete unit of plant and/or equipment, replacement components or appropriate substitutes, their dimensions, suitability and serviceability; also the components associated with the local control systems of the equipment including indication of levels, quantities, volumes, pressures and temperatures and the operating principles of these devices and components

Types of materials - insulation, construction, fabrication or lubrication of the plant/equipment

Techniques in enterprise procedures and regulatory/legislative requirements for the handling/use and storage of equipment components and materials which may present an OHS hazard to persons in the workplace

T12 Substation safety practices encompassing:

Standards, codes, Commonwealth, State/Territory/local government legislation, supply authority regulations and or enterprise requirements pertaining to substation safety practices

Techniques in the use of protective apparatus and apparel for substations work, including responsibilities with regard to the use and maintenance of protective apparatus and apparel and the types of protective apparatus and apparel used for work in substations

Requirements for the use of ladders and appropriate ladder types for work in substations - safe work methods when carrying, erecting, collapsing and lowering different types of extension ladder against substation structures, plant and equipment, maintenance checks on different types of ladders, renewal of extension ropes and the safety issues relating to clearances from energised conductors

Requirements for climbing and working at heights in substations - attached climbing principles, selection, use and operation of elevated work platforms and any OHS requirements associated with the use of EWPs

Control of small fires - identification, selection and operation of the appropriate extinguishing mediums for various types of fires and the precautions for personal protection when fighting small fires

Control of oil spills - identification, use and maintenance of spill oil control equipment and materials, oil containment facilities and systems

Rescue and release procedures - the rescue personnel from energised conductors, emergency descent from an EWP and may include rescue from confined spaces.

Enterprise requirements - safe access and Authorisation to Work procedures, use of mobile extendable equipment on or near energised HV conductors, emergency response procedures.

Hazards associated with work in substations including earthing systems, transfer potentials, step and touch effects, electrostatic and electromagnetic induction, dangers of near approach to energised conductors

T13 Design principles of Substation LV AC and DC supply systems encompassing:

Standards, codes, Commonwealth, State/Territory/local government legislation, supply authority regulations and or enterprise requirements

Wiring conventions, systems and labelling conventions

Substation equipment identification and layout, wiring and schematic diagrams and other appropriate diagrammatic representations

LV design specifications, supply requirements, electrical load assessments

Substation LV system distribution requirements - substation batteries, isolation requirements, paralleling requirements, battery chargers, DC distribution panels and control systems, AC distribution panels and control systems, auto change-over requirements,

Control equipment and auxiliary relays, flags and alarms,

Common panel layouts.

T14 Design principles of high voltage insulation systems encompassing:

Insulation design principles - common materials used, electrical characteristics, thermal characteristics, uses and applications to substation high voltage plant and equipment, grading, construction, cooling.

Common contaminants and their effects - internal contaminants, external contaminants

Testing and measurement of insulation quality - test types and common measuring instruments and techniques, resistance and resistivity, losses, measurement errors, temperature corrections, safe work practices related to testing and measurement

Safety precautions when testing and measuring high voltage insulation systems - safe working practices and procedures, identification of hazards, assessment and control of OHS risks, types, selection, maintenance and use of personal protective equipment

T15 Principles of power transformer construction and operations encompassing:

Transformer types - shell, core, auto, double wound, three phase, single phase and combinations of these types, step up and step down transformers, transmission and generation types

Reactor types - shunt and series, applications and design considerations

Iron circuit characteristics - steel types, losses and techniques used to eliminate excess eddy currents and other circulating currents

Winding configurations and construction techniques - helical, spiral, disc, interleaved disc types

Insulation methods and techniques - fully insulated windings and graded insulation techniques, oil filled and gas filled power transformers

Transformer and reactor ratings, losses and efficiency - equivalent circuits and vector relationships, impedance percent

Nameplate details - BIL, tapping winding detail, physical layout, cooling ratings, physical details

Transformer and reactor cooling types and their effects on design and rating

Transformer and reactor auxiliaries - temperature indicators, over pressure devices and control systems

Winding configurations - star-star, star-delta, star-zigzag, nomenclature and common methods of diagrammatic representation of winding configuration

Operating constraints as single units and in parallel

Tapping windings - placement issues, tapping range, OLTC versus off load TC techniques, types in use (high speed resistor, reactor and vacuum types, Jansen mechanisms, dead tank and live tank types), control system characteristics.

High voltage bushing selection – type, insulation system used, rating, BIL, selection criteria, testing considerations

T16 Low voltage substation switching principles encompassing:

Standards, codes, legislation, supply authority regulations and or enterprise requirements applicable to low voltage substation switching

Requirements for the use of manuals, system diagrams/plans and drawings - types, characteristics and capabilities of LV electrical equipment to be switched, use, characteristics and capabilities of specialised tools and testing equipment

Role and responsibilities of the LV switching operator

Operational forms, access authorities and permits associated with LV switching - types of operational forms, access authorities and permits, purpose and procedure for operational forms, access authorities and permits

Use, care and operation of equipment associated with LV substation switching

LV switchgear – types, categories, application, operating capabilities

Operation of LV substation switching or indicating devices

Operation of protection systems and substation equipment

Restrictions pertaining to LV switching equipment

Earthing LV electrical apparatus practices and procedures for access

Low voltage switching techniques

Restrictions pertaining to Enterprise Specific procedures.

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 may be demonstrated in relation to substation transformers and instrument transformers, including potential transformers, current transformers, power transformers and auxiliary transformers.

Diagnostic checks and measurements may include oil sampling, insulation resistance, winding resistance, dielectric dissipation factor, winding ratio, vector group, low voltage excitation, frequency response analysis and recovery voltage measurements.

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

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Work schedules including drawings, plans, requirements procedures and material lists are acquired, analysed and the extent of work determined. 
Relevant requirements and established procedures for the work are communicated to all personnel and identified for all work sites. 
Hazards are identified, OHS risks assessed and control measures are prioritised, implemented and monitored including emergency exits kept clear, to ensure safe systems of work are followed and according to established procedures. 
Work is prioritised and sequenced for the most efficient and effective outcome following consultation with others for completion within acceptable timeframes, to agreed quality standards and in accordance with established policies and procedures. 
Risk control measures are identified, prioritised, implemented and evaluated against the work schedule. 
Resources including personnel, equipment, tools and personal protective equipment required for the job are identified, acquired and confirmed in safe/technical working order. 
Liaison issues with other personnel and/or authorities are resolved and activities coordinated to facilitate the work. 
Personnel participating in the work including plant operators and contractors are fully briefed, their respective responsibilities explained and coordinated and appropriate authorisation checked in accordance with established procedures. 
Work site is prepared according to the work schedule and to minimise risk and damage to property and personnel in accordance with established procedures. 
OHS and sustainable energy principles and practices to reduce the incidence of accidents and minimise waste are implemented and monitored in accordance with established procedures. 
CPR, Rescue from live electrical apparatus and other related safety procedures are in place according to requirements and established procedures. 
Safe working documentation is acquired and requirements completed in accordance with established procedures. 
Lifting, climbing and working aloft, use of power tools/equipment techniques and practices are safely exercised in accordance with established procedures. 
Hazard warnings and safety signs are recognised and hazards and assessed OHS risks are monitored and preventive action taken and/or appropriate authorities consulted where necessary in accordance with established procedures. 
Essential knowledge and associated skills are applied for the safe maintenance of HV power system transformers and instrument transformers to ensure completion in an agreed timeframe and, to quality standards with a minimum of waste according to requirements. 
Transformer/instrument transformer is isolated and maintained in accordance with manufacturers and enterprise procedures and recommendations. 
Diagnostic measurements are carried out and results interpreted, analysed and recorded as per established procedures. 
Transformer/instrument transformer is restored in accordance with established policies and procedures. 
Unplanned events or conditions are responded to in accordance with established procedures. 
Work undertaken is checked against work schedule for conformance with requirements, anomalies reported and solutions identified in accordance with established procedures. 
Safe working documentation is surrendered and transformer/instrument transformer made ready for service. 
Work site is rehabilitated, cleaned up and confirmed safe in accordance with established procedures. 
Tools, equipment and any surplus resources and materials are cleaned, checked and returned to storage in accordance with established procedures. 
Required works completion records, reports and/or documentation and information are completed, processed and appropriate personnel notified in accordance with established procedures. 

Forms

Assessment Cover Sheet

UETTDRSB25A - Maintain high voltage power and instrument transformers
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:


Assessment Record Sheet

UETTDRSB25A - Maintain high voltage power and instrument transformers

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: