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Elements and Performance Criteria

  1. Plan to maintain energised high voltage distribution overhead electrical apparatus (glove and barrier)
  2. Carry out maintenance of energised high voltage distribution overhead electrical apparatus (glove and barrier)
  3. Complete the maintenance of energised high voltage distribution overhead electrical apparatus (glove and barrier)

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 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

KSTDPA Live line working up to kV with glove and barrier

KS01-TDP14A Live line working up to 33 kV with glove and barrier

Evidence shall show an understanding of live lines working up to kV with glove and barrier to an extent indicated by the following aspects

T Legislation and Regulations encompassing

Legislation standards and codes

Supply authority regulations

Industry guidelines and enterprise requirements

T Safety Precautions for High Voltage Live Work associated to Glove and Barrier encompassing

Minimum approach distances

OHampS hazard and precautions

Assessing and controlling risks

Personnel protective equipment

High Voltage live work access

Autoreclose 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

T Policies and procedures for glove and barrier work up to and including kV encompassing

Policies procedures and practices

Definition of terms

Responsibilities of personnel

Types of structures

Types of equipment and compliance

T Glove and barrier techniques up to and including 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

T Safety precautions for plant equipment and tools encompassing

Safe working clearances

Identification of OHampS hazards

Assessing and controlling risks and hazards

Personal protective equipment

T Identification and serviceability of plant equipment and tools encompassing

Identification of plant equipment and tools

Serviceability of plant equipment and tools

T 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

T 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

T 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

T Effects of electrostatic Induction on the human body encompassing

Electrostatic induction and the human body

Application of a faraday cage

T Switching surges and magnetic fields encompassing

Lightning and switching surges

Magnetic fields

T High Voltage switching fundamentals encompassing

Standards and requirements Standards codes legislation supply authority regulations industry guidelines and enterprise requirements

Manuals system diagramsplans and drawings

High Voltage live work access authoritypermit 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 coordination zoning autoreclosing suppression paralleling and separating and ring verses radial feeders

Disabling autoreclose 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

T High voltage SWER system encompassing

Components

Circuit arrangement

Operation principles

Faulty SWER earth system

SWER substations

T Safety Observer principles encompassing

Duties

Techniques

Minimum Approach Distances MAD

Minimum safe working distance from vegetation

T Feeder automation system encompassing

Function

Main components

Field devices

SCADA systems interlocks and operation

T 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

T Teamwork High Voltage Live Work

Evidence Required

This provides essential advice for assessment of the unit of competency and must be read in conjunction with the performance criteria and the range statement of the unit of competency 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

All of the following

Installreplace structures

Installreplace hardware eg crossarm and insulator

Repair conductors

Installreplaceconnect bridgebonding connections

B

At least two of the following

Installreplace pole mounted reclosers

Installrepairreplace air brake switches

Installrepairreplace high voltage linksdisconnects

Installremove temporary high voltage linkshigh voltage fuses

Installrepairreplace expulsion dropout fuses

Installreplace lightning arrestors

Installreplace vibration dampers or aircraft warning markers

C

At least two of the following

EWP

Ladder

Pole platform

Insulated structured

D

At least one of the following

Voltage detector

Leakage detector

Insulation test equipment

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 installation and maintenance of energised high voltage overhead electrical apparatus

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 ie above metres 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 Industry to which this Competency Standard Unit applies 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

There are no recommended concurrencies for this unit


Range Statement

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 maintenance of energised HV distribution overhead electrical apparatus and may include the following:

Types of conductor may include bare aluminium; steel cored aluminium, steel and copper conductors and insulated unscreened conductor (IUC) systems.

Maintenance work may include -

The replacement and repair or installation of structures, associated hardware and conductors, and the installation, repair, replacement or connection of bridges/bonding connections.

The repair/replacement/installation of electrical equipment and associated components whose current carrying parts are exposed, e.g. air break switches, High Voltage links or disconnects and expulsion drop-out fuses. Pole mounted reclosers, transformers, sectionalisers, lightning arresters and High Voltage cables.

The commissioning of High Voltage electrical apparatus

Distribution structures may be wood, steel, concrete or composite.

Conductor voltage will not exceed 33 kV.

Work may be performed from elevating work platform, ladder, portable pole platform or insulated scaffold and may include the use of a gin pole.

Testing and recording equipment includes phasing sticks, fault indicators, voltage detectors, leakage detectors insulation testers and test equipment for live-line tools.

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

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