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Elements and Performance Criteria

  1. Prepare/plan to draft and layout an underground distribution extension
  2. Carry out drafting and layout of an underground distribution extension
  3. Complete drafting and layout of an underground distribution extension

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 drafting and laying out an underground distribution extension

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

KSTDSA Power system underground distribution extension

KS01-TDS32A Power system underground distribution extension

Evidence shall show an understanding of the power system underground distribution extension to an extent indicated by the following aspects

T Installation of underground cable encompassing

Requirements for the use of enterprise construction manuals system diagramsplans and drawings

Safety precautions specific to the installation of underground cable excavation and trench safety regulations gas detection procedures working in confined spaces personal protective equipment hazards for the use of LPG equipment for jointing of underground cable gas bottle testing procedures permit to work systems and isolation procedures

Trench excavation and reinstatement procedures

Installation of underground cable procedures types of tools and equipment methods of installing conduits methods of installing cables and sealing cable ends direct buried ducts cleated and racked

Procedures for the safe use of LPG equipment for cable jointing

T Construction and types of underground cables encompassing

Safety precautions specific to handling underground cables

Requirements for the use of enterprise manuals system diagramsplans and drawings

Types and applications of UC

Construction types and structures of underground cables

Characteristics of different types of underground cables

Ratings

T 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 instructionwork 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

T Power distribution network documentation encompassing

Requirements for the use of manuals system diagramsplans and drawings and for plans such as work method statements for the control of OHS risks

Types and application of power distribution network documentation drawings and documents wiring and schematic diagrams drawings and switching symbols mechanical drawings dealing with the power distribution network project charts schedules graphs technical manuals and catalogues instructionworksheets sheets

Interpretation of different diagrams and documentation on LV and HV systems overhead distribution extensions underground distribution extensions distribution substation street lighting system

T Fundamentals of surveying for the purpose of producing an overhead or underground distribution extension encompassing

Commonwealth StateTerritory and local government legislation Standards codes supply and aviation authority regulations and or enterprise requirements applicable to the surveying for an overhead and underground extension

Techniques in measuring heights and distances

Techniques in taking bearings angles of deviation using a compass

Techniques in using a clinometer

Techniques in recording and storage of data

Requirements for the use of overhead line construction manuals system diagramsplans and drawings

Techniques in plotting long spans measuring stick clinometer trundle wheel tapes correction for sloping ground distance across objects and range rods

Techniques in pegging pole positions foot path alignments types of pegs pegs of other authorities and locating survey pegs

T Fundamentals of computer aided drafting CAD for drafting and layout of distribution extension and upgrades encompassing

Commonwealth StateTerritory and local government legislation Standards codes supply authority regulations and or enterprise requirements applicable to the drafting and layouts of distribution extensions and upgrades

Types of computer hardware and software tools and equipment for the production of a draft and layout of distribution extension and or upgrade

Techniques in storing and retrieving programs and files from the computer

Identification and methods of retrieving and manipulating digital symbols designs layouts fonts and graphs stored in the computer

Techniques in using the CAD package in following necessary commands and protocols in accordance with the operating instructions of the CAD software manufacturer

Note Examples include using file structure menu utilisation system library usage data banking achieving file management and maintenance procedures

Calculation of dimensions and drafting measurements using the computer

Techniques in the preparation of preliminary sketches using the computer

Techniques in using D computer graphics system and associated equipment to produce a distribution extension and or upgrade draft or layout

Techniques to diagnosing basic faults in computer operation

T Layout principles for underground mains distribution extension encompassing

Commonwealth StateTerritory and local government legislation Standards codes supply authority regulations and or enterprise requirements applicable to underground mains distribution extension

Requirements for the use of underground mains construction manuals system diagramsplans and drawings and for plans such as work method statements for the control of OHS risks

Methods in determining material equipment and tool lists components types and quantity required spacing of components and equipment costings of items and components

Purchasing and contractual arrangements to include a requirement to eliminate OHS hazards minimise risks and provide residual OHS risk information

Determination of conductor size type and route length

Resources needed for the laying of conductors

Determining the appropriate excavation for the location

Determining the size and depth of excavation

Determining the trench and pit layout procedures

Minimum clearances between conductors

Estimation of the duration of underground distribution extension project

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 UETUET 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

At least one of the following

Produce a HV multiphase underground distribution extension planlayout

Produce an LV multiphase underground distribution extension planlayout

B

At least one of the following

Layout an LV multiphase underground distribution extension

Layout a HV multiphase underground distribution extension

C

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 drafting and layout of an underground distribution extension

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 draft and layout of an underground distribution extension and may include the following:

Underground cable, terminations, joints, Substations, mechanical protection, HV Switchgear, LV Switchgear, signage, relevant protection systems, relevant protection systems including fuses and circuit breakers and associated civil works.

Drafting equipment, computer or manual Powerline design software, mechanical and/or electrical survey equipment including; measuring tapes and chains, levels, inclinometer, measuring wheels and integrated survey stations.

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

Safe design principles

Testing procedures

Work clearance systems