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CS10 # 2495220 © Horizon Power 2015

Networks Permit to Work Training Manual

Issued by Health and Safety

HORIZON POWER

CS10# 2495220 Review Date: 01/05/2013

Date: May 2015

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Networks Permit to Work Training Manual Issue Date: August 2014 CS10 # 2495220 Uncontrolled when printed

DOCUMENT CONTROL

Document Owner (May also be the Process Owner)

Name: Mark Van Vuuren

Position: Field Practices Coordinator

Date: May 2015

Approved By *

Name: Mark Van Vuuren

Position: Field Practices Coordinator

Date: May 2015

Authorisation ** Process Owner is hereby vested with

authority and responsibility to manage

the process end to end.

Name: Lance Roberts

Position: Manager Health & Safety

Date: May 2015

Date Created/Last Updated May 2015

Review Frequency *** Every 3 years

Next Review Date *** May 2018

* Must be the Process Owner and is the person assigned authority and responsibility for managing the whole process, end-to-end, which may extend across more than one division and/or functions, in order to deliver agreed business results.

** This person will have the power to grant the process owner the authority and responsibility to manage the process from end to end.

*** Frequency period is dependent upon circumstances– maximum is 5 years from last issue, review, or revision whichever is the latest. If left blank, the default will be 1 year unless otherwise specified.

STAKEHOLDERS The following positions must be consulted if an

update or review is required:

NOTIFICATION LIST The following positions must be notified of any

authorised change:

Works Delivery Coordinators Safety & Health

District Business Managers Field Practices Coordinator

Horizon Power Control Centre (HPCC) Technical Training Coordinator

Asset Managers


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TABLE OF CONTENTS

INTRODUCTION .......................................................................................................................................... 1

1 OVERVIEW ........................................................................................................................................... 3

1.1 PURPOSE ................................................................................................................................................. 3 1.2 SCOPE .................................................................................................................................................... 4

1.2.1 General ........................................................................................................................................ 4 1.2.2 Training and Authorisation.......................................................................................................... 5

2 DEFINITIONS ........................................................................................................................................ 7

3 ROLES AND RESPONSIBILITIES ............................................................................................................ 11

3.1 SWITCHING OPERATOR ............................................................................................................................ 11 3.2 ISSUING OFFICER .................................................................................................................................... 11 3.3 RECIPIENT IN CHARGE .............................................................................................................................. 12

3.3.1 Responsibilities common to all work permits ........................................................................... 12 3.3.2 Recipient in Charge of an EAP ................................................................................................... 13 3.3.3 Recipient in Charge of a VA ....................................................................................................... 13 3.3.4 Recipient in Charge of an Access to Live Electrical Apparatus .................................................. 13

3.4 TESTER IN CHARGE – SANCTION TO TEST ..................................................................................................... 13 3.5 RECIPIENT ............................................................................................................................................. 14

4 WORK PERMITS ................................................................................................................................. 15

4.1 ELECTRICAL ACCESS PERMIT (EAP) ............................................................................................................ 15 4.1.1 Purpose ..................................................................................................................................... 15 4.1.2 Issue of Electrical Access Permit ............................................................................................... 15 4.1.3 Issue with Sanction to Test ....................................................................................................... 16 4.1.4 Issue of Electrical Access Permit ............................................................................................... 16 4.1.5 Completion of work................................................................................................................... 16 4.1.6 Earthing ..................................................................................................................................... 16 4.1.7 Recording of earthing applications ........................................................................................... 16

4.2 VICINITY AUTHORITY (VA) ........................................................................................................................ 17 4.2.1 Purpose ..................................................................................................................................... 17 4.2.2 Issue of Vicinity Authority ......................................................................................................... 17 4.2.3 Completion of work................................................................................................................... 17

4.3 ACCESS TO LIVE ELECTRICAL APPARATUS WORK PERMIT .................................................................................. 17 4.4 SANCTION TO TEST (STT) ......................................................................................................................... 17

4.4.1 Purpose ..................................................................................................................................... 17 4.4.2 Issue of Sanction to Test ........................................................................................................... 18 4.4.3 Issue with Electrical Access Permit ........................................................................................... 18 4.4.4 Issue of Sanction to Test ........................................................................................................... 18 4.4.5 Completion of test .................................................................................................................... 18

5 TAGS .................................................................................................................................................. 19

5.1 DANGER–DO NOT OPERATE TAG ............................................................................................................... 19 5.1.1 Front of Danger–Do Not Operate tag........................................................................................ 20 5.1.2 Back of Danger–Do Not Operate tag ......................................................................................... 20

5.2 CAUTION–VICINITY WORK IN PROGRESS TAG ............................................................................................... 20 5.2.1 Remote operation of protection equipment ............................................................................ 21 5.2.2 Front of Caution–Vicinity Work in Progress tag ........................................................................ 21 5.2.3 Back of Caution–Vicinity Work in Progress tag ......................................................................... 21

5.3 DANGER–RESTRICTED USE TAG ................................................................................................................. 21 5.3.1 Front of Danger-Restricted use tag ........................................................................................... 22

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5.3.2 Back of Danger-Restricted use tag ............................................................................................ 22 5.4 WARNING–OUT OF SERVICE TAG ............................................................................................................... 23

5.4.1 Warning–Out of Service tag and Danger–Do Not Operate tag ................................................. 23 5.4.2 Front of Warning–Out of Service tag ........................................................................................ 24 5.4.3 Back of Warning–Out of Service tag ......................................................................................... 24

6 LOCKS ................................................................................................................................................ 25

6.1 TRANSMISSION ...................................................................................................................................... 25 6.2 DISTRIBUTION ........................................................................................................................................ 25

7 APPLICATION OF WORK PERMITS ...................................................................................................... 27

7.1 ACCESS TO NETWORK ELECTRICAL APPARATUS .............................................................................................. 27 7.2 WORK PERMIT DURATIONS ....................................................................................................................... 27

7.2.1 When a work permit is cancelled ............................................................................................. 27 7.3 DUAL ROLES UNDER THE SAME WORK PERMIT............................................................................................... 28

7.3.1 Switching Operator or Issuing Officer as Recipient in Charge .................................................. 28 7.3.2 Switching Operator or Issuing Officer as Recipient .................................................................. 28 7.3.3 Recipient in Charge or Tester in Charge as Recipient ............................................................... 28 7.3.4 Recipient in Charge or Tester in Charge dual role .................................................................... 28 7.3.5 Recipient in Charge and operational work ............................................................................... 28

7.4 PRELIMINARY PREPARATION OF WORK PERMIT .............................................................................................. 28 7.4.1 Request for access to the network ........................................................................................... 29 7.4.2 Switching program carried out ................................................................................................. 29 7.4.3 Work permit prepared .............................................................................................................. 29

7.5 NETWORK PERMIT TO WORK PROCEDURE ................................................................................................... 30 7.5.1 Issue of work permit ................................................................................................................. 30 7.5.2 Recipient in Charge or Tester in Charge accepts work permit.................................................. 30 7.5.3 Recipient in Charge or Tester in Charge explains work permit conditions to work party ........ 31 7.5.4 Work party members sign onto work permit ........................................................................... 31 7.5.5 Working proceeds under active work permit ........................................................................... 31 7.5.6 Recipient in Charge or Tester in Charge relinquishes work permit .......................................... 32 7.5.7 Issuing Officer cancels work permit .......................................................................................... 33

7.6 VARIATIONS TO PERMIT PROCEDURE .......................................................................................................... 34 7.6.1 Remote procedures for work permits ...................................................................................... 34 7.6.2 Multiple work parties within the same isolated area ............................................................... 35 7.6.3 Vicinity Authority and protection auto reclose disabled (VA to remain active) ....................... 36 7.6.4 Change to the scope of work .................................................................................................... 37 7.6.5 Recipient leaving the worksite .................................................................................................. 37 7.6.6 Transfer of Recipient in Charge & Tester in Charge responsibilities......................................... 37 7.6.7 Absent Recipient or Recipient in Charge .................................................................................. 39 7.6.8 Extension to section of a work permit ...................................................................................... 41 7.6.9 Emergency situations ................................................................................................................ 41

8 PROCEDURAL FLOWCHARTS .............................................................................................................. 43

8.1 BASIC NETWORKS PERMIT TO WORK PROCEDURE ........................................................................................ 43 8.2 ISSUING AN ELECTRICAL ACCESS PERMIT ..................................................................................................... 44 8.3 ISSUING / RELINQUISHING AN ELECTRICAL ACCESS PERMIT ............................................................................. 45 8.4 CANCELLING AN ELECTRICAL ACCESS PERMIT ............................................................................................... 46 8.5 ISSUING / RELINQUISHING A VICINITY AUTHORITY ......................................................................................... 47 8.6 ISSUING / RELINQUISHING A SANCTION TO TEST ........................................................................................... 48 8.7 VARIATION – REMOTE ISSUE OF WORK PERMIT ............................................................................................. 49 8.8 VARIATION – REMOTE RELINQUISHMENT OF WORK PERMIT ............................................................................ 50 8.9 VARIATION – MULTIPLE WORK PARTIES WITHIN SAME ISOLATED AREA ............................................................... 51 8.10 VARIATION – VICINITY AUTHORITY AND PROTECTION AUTO RECLOSE DISABLED (VA TO REMAIN ACTIVE) ............. 52 8.11 VARIATION – CHANGE TO THE SCOPE OF WORK ........................................................................................ 53 8.12 VARIATION – RECIPIENT LEAVING THE WORKSITE ...................................................................................... 54 8.13 VARIATION – TRANSFER OF RECIPIENT IN CHARGE RESPONSIBILITIES ............................................................. 55

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8.14 VARIATION – ABSENT RECIPIENT – SIGN OFF ............................................................................................ 56 8.15 VARIATION – ABSENT RECIPIENT IN CHARGE – TRANSFER ........................................................................... 57 8.16 VARIATION – EXTENSION TO SECTION OF THE WORK PERMIT ....................................................................... 58

APPENDIX A .............................................................................................................................................. 59

APPENDIX B .............................................................................................................................................. 60

APPENDIX C .............................................................................................................................................. 61

APPENDIX D ............................................................................................................................................. 62

APPENDIX E .............................................................................................................................................. 63

APPENDIX F .............................................................................................................................................. 64

APPENDIX G ............................................................................................................................................. 65

REFERENCE PUBLICATIONS ....................................................................................................................... 67

GLOSSARY OF ABBREVIATIONS AND TERMINOLOGY ................................................................................ 69

INDEX ....................................................................................................................................................... 71

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LIST OF FIGURES & DIAGRAMS

Figure 1 - Example of a Danger–Do Not Operate tag (front) ........................................................... 20

Figure 2 - Example of a Danger–Do Not Operate tag (back) .......................................................... 20

Figure 3 - Example of a Caution–Vicinity Work in Progress tag (front) ........................................... 21

Figure 4 - Example of a Caution–Vicinity Work in Progress tag (back) ........................................... 21

Figure 5 - Example of a Danger–Restricted Use tag (front) ............................................................ 22

Figure 6 - Example of a Danger–Restricted Use tag (back) ............................................................ 22

Figure 7 - Example of a Warning–Out of Service tag (front) ........................................................... 24

Figure 8 - Example of a Warning–Out of Service tag (back) ........................................................... 24

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1


INTRODUCTION

This Networks Permit to Work Training Manual (NPTWTM) provides the minimum requirements for work permit activities on Horizon Power's Transmission and Distribution electricity networks.

This training manual will assist in training Horizon Power employees and service providers involved in managing risks associated with carrying out these activities.

The manual been written to support Horizon Power’s overall safety and health framework and the hierarchy of Acts / Regulations, Codes of Practice, organisational policies, practices and procedures.

This manual should be used together with other relevant standards, instructions, procedures and operational documents to provide a structured and safe system of work.

All activities within this manual shall only be performed by individuals who are appropriately trained and authorised in accordance with Horizon Power policies and procedures.

In the interest of your own personal safety, the safety of all Horizon Power workers and the people in the community, it is essential that you be broadly familiar with the overall content of this manual and fully understand how it relates specifically to your role and work in the field.

This manual will be regularly reviewed. Any queries and suggestions for improvement should initially be directed to the Field Practices Coordinator via your formal leader.

© Horizon Power 2015

All rights reserved. No part of this work may be reproduced or copied in any form or by any means (graphic, electronic, taping or information retrieval system) without the written permission of the copyright owner.

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Networks Permit to Work Training Manual Issue Date: September 2013 CS10 # 2495220 © Horizon Power Uncontrolled when printed


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1 OVERVIEW

1.1 Purpose

This Networks Permit to Work Training Manual (NPTWTM) encompasses instructions necessary for safe access to electrical apparatus on Horizon Power’s Transmission and Distribution electricity networks.

The procedures explained in each section of this manual are the minimum procedures required for the safety of Horizon Power employees and contractors, other work parties, the community, and electrical apparatus, from dangers related to unauthorised access by persons to electrical apparatus.

The contents of this manual are:

an overview of the manual, including its purpose and scope

definitions of key terms and phrases used in the manual

roles and responsibilities of key personnel

work permits used on Horizon Powers network

tags used in association with the work permits

the application of work permits, incorporating procedures

variations to procedures

Procedural flowcharts.

The appendices show sample work permits.

Where Horizon Power has electrical apparatus located within the boundaries of other organisations or where it operates through established alliance or joint venture arrangements, the requirements of this manual shall be applied as the minimum.

Safety is the overriding value for all aspects of Horizon Power’s business, and this manual shall be followed to ensure:

safety of Horizon Power personnel, contractors and the community

safety and security of Horizon Power’s assets, public and private property, and

continuity of supply.

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1.2 Scope

1.2.1 General

This training manual shall apply to all persons who work on or near Horizon Power’s Transmission and Distribution electrical apparatus.

This manual applies too:

Transmission and Distribution electricity networks owned and/or controlled by Horizon Power

Transmission and Distribution electricity networks owned or controlled by contractors or others where the electrical apparatus is located on premises owned by Horizon Power

Construction sites that have the potential to connect with Horizon Power operational Transmission and Distribution electricity networks

The boundary of a power station on the network side of the output bushings of the step up transformer or the supply side of a feeder circuit breaker if there is no step up transformer.

This manual does not apply too:

Horizon Power Transmission and Distribution electricity networks that have been declared out of use, and

A construction site that has no potential to be connected to any Horizon Power operational Transmission and Distribution electricity network.

Generation facilities and facilities covered by the Generation Permit to Work Standard.

Note: All Horizon Power and contractor personnel who work with the NPTWTM and its procedures shall at all times comply with;

Horizon Power ESS – CS 10# 2305678

Horizon Power FIM – CS 10# 2353174

Horizon Power TSFIM – CS 10# 2653205

Horizon Power PPE standard – CS 10# 1781033.

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1.2.2 Training and Authorisation

Persons who are required to issue, accept, and use work permits shall:

have been appropriately trained for the Network Permit to Work

have the appropriate Horizon Power authorisation to perform such work.

1.2.2.1 Re-authorisation

To maintain authorisation, compliance auditing and work skills assessments shall be undertaken at regular intervals and, as a minimum, cover knowledge, skills and attitudes necessary for an individual to perform specified activities and tasks.

Mandatory refresher training shall be carried out every two years by a recognised Horizon Power training provider.

Note: An IO shall only issue a work permit if they hold the Switching Operations Authorisation level relevant to work permit being issued e.g. if the work permit is being issued for access to distribution high voltage electrical apparatus, then the IO shall be authorised to switch this apparatus.

Persons undertaking SO training with a D restriction can issue work permits under the direction of a SO who holds the Switching Operations Authorisation level

relevant to work permit being issued

.

Note: Where deficiencies in compliance with the Network Permit to Work are found, refresher training may be required.

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2 DEFINITIONS

Access to Live Electrical Apparatus work permit – Horizon Power's proposed work permit that authorises access to live electrical apparatus and, where applicable, the auto-reclose function for the protection equipment on the circuit of that electrical apparatus has been disabled. Note: This work permit and its associated procedures are pending, and the subject of further development.

Active – the state of a work permit once it has been issued to and accepted by a Recipient in Charge or Tester in Charge. The work permit remains active until it is relinquished.

Approved – personnel, equipment, or procedures having the appropriate Horizon Power authorisation or certification.

Authorised Person – a person with technical knowledge or sufficient experience, who has been approved, or has the delegated authority, to act on behalf of Horizon Power to perform the duty concerned.

Cable – an insulated conductor or two or more such conductors laid together, whether with or without fillings, reinforcements or protective coverings.

Competent Person – a person having the skills, knowledge and attributes needed to complete a task to the required standard.

Conducting surface – a surface capable of carrying an electric current

Conductor – a wire, cable or form of metal designed for carrying electric current (includes neutrals and earths).

Danger–Do Not Operate tag – an approved tag attached to electrical apparatus as an instruction against the operation of that electrical apparatus.

De-energised – means not connected to any source of supply but not necessarily isolated.

Discharged – means conductors, which have been connected to earth so as to remove any stored electrical energy.

Disconnector – a switch used to isolate a section of a circuit from any energised conductors, by presenting a visible break in the circuit. (See Link and Isolator)

Earthed – means directly electrically connected to the general mass of earth so as to ensure and maintain the effective dissipation of electrical energy.

Earthing equipment – means approved equipment applied in an approved manner for earthing electrical apparatus.

Electrical Access Permit – Horizon Power's work permit that authorises access to electrical apparatus that has been made safe by being isolated, proved de-energised, and earthed (HV) or short-circuited (LV).

Electrical apparatus – means any electrical equipment, including overhead lines, underground cables, and substation equipment, which are live or can be made live.

Electricity network – means transmission and distribution systems consisting of electrical apparatus which are used to convey or control the conveyance of electricity between generators’ points of connection and customers’ points of connection.

8 Definitions


Emergency situation – a situation that presents an immediate threat to life, or to property or the environment where that threat may also constitute an immediate threat to life.

Energised – means connected to a source of energy.

Handover Certificate – a certificate used to transfer responsibilities between control authorities for any defined part of apparatus. This certificate is not included in the NPTW procedures.

High voltage or HV – means a voltage of or greater than:

a) 1000 volts a.c., or

b) 1500 volts d.c.

Horizon Power Control Centre (HPCC) – Horizon Power's operating authority responsible for the operation of Horizon Power's Transmission and Distribution electricity network.

Instructed Person – a person adequately advised or supervised by an Authorised Person to enable them to avoid the dangers which electricity may create.

Insulated – separated from adjoining conducting material by a non-conducting substance, which provides resistance to the passage of current, or to disruptive discharges through or over the surface of the substance at the operating voltage.

Isolated – Means a number of devices have been operated to disconnect the apparatus from unwanted sources of energy. This would require a deliberate planned or unintentional physical movement to make the electrical apparatus live (e.g. RMU switched Off, locked and Danger Labelled).

Isolator – a switch used to isolate a section of a circuit from any energised conductors, by presenting a visible break in the circuit. (See Disconnector or Link).

Issuing Officer – a competent person who is authorised to issue work permits.

Link – This term is a colloquialism and its use is discouraged. This term is not recognised in the NPTWS procedures. Use Disconnector.

Live – energised or subject to hazardous induced or capacitive voltages.

Live work – all work performed on components of electrical apparatus, not isolated, nor proved de-energised or short-circuited earthed.

Low voltage or LV – a voltage greater than:

a) 50 volts, but not exceeding 1000 volts a.c., or

b) 120 volts, but not exceeding 1500 volts d.c.

Mobile plant – cranes, elevating work platforms, tip trucks or similar plant, or any equipment fitted with a jib or boom and any device capable of raising or lowering a load.

Near – a situation where there is a reasonable possibility of a person, either directly or through any conducting medium, coming within the relevant safe approach distance.

Network Operator – the owner, controller or operator of an electricity network.

Operating Agreement – a statement of condition status of apparatus within and between separate Network Operators. Procedures incorporating the Operating Agreement are not included in the procedures.

Definitions 9


Operating authority – See HPCC.

Out of use – means electrical apparatus disconnected from all sources of supply by the removal or absence of conductors, appropriate to the voltage and insulating medium and, not able to be energised by a switching operation. Refer to Horizon Power Electrical Safety Standards for full definition.

Out of service – relating to an item of electrical apparatus that is considered damaged or defective and may be returned to service after maintenance or replacement.

Person in Charge – a person who is responsible for the work being carried out by a work party.

Programmed earth – approved earthing and short circuiting equipment applied to electrical apparatus, as a requirement for the issue of a work permit.

Proxy Issuing Officer – the Issuing Officer role delegated to the on-site Recipient in Charge for the purposes of remote permit procedures, including the remote issue, working with, and cancellation of a work permit.

Recipient – A person carrying out work under an EAP, VA, or SST.

Recipient in Charge – an authorised person who accepts an EAP or VA work permit and, by doing so, is in charge of ensuring the conditions of that EAP or VA have been established and are being complied with by a work party.

Safe approach distance (SAD) – the minimum separation distance that shall be maintained by a person, mobile plant (including its load) or any object (other than insulated objects designed for contact with live conductors) from electrical apparatus.

Safe – being in a state that complies with all WA OSH Act and Regulation requirements, and poses minimum risk to life, health, or damage to assets.

Safety Observer – a person competent for the task and specifically assigned the duty of observing and warning against unsafe approach to electrical apparatus or other unsafe conditions.

Sanction to Test – Horizon Power's standard form which authorises the testing or adjustment of electrical apparatus through the operation of that electrical apparatus.

Scope of work – the description of the work and its parameters as written in the Work Description (or similar) section of a work permit.

Shall – is to be interpreted as “mandatory”.

Short circuiting – means the connecting together of conductors by approved equipment so that an electrical voltage cannot exist between them.

Should – is to be interpreted as “advisory” or “discretionary”.

Substation – a switchyard, terminal station or place at which high voltage supply is converted, or transformed or switched.

Switch – electrical apparatus designed to make or break normal load current and make fault current.

Switching Operator – a person authorised to perform switching operations within their limit(s) of authority on Transmission and Distribution electricity networks.

10 Definitions


Switching program – a list of switching operations that are placed in a logical sequence to ensure the operation of electrical apparatus is carried out in a safe manner.

Tester in Charge – an authorised person who is in charge of ensuring the conditions of a Sanction to Test permit have been established and are being complied with by a work party.

Under direction – the term used to describe the restrictions under which a Switching Operator in training is able to perform switching operations on their own. Designated as a ‘D’ restriction. Refer to Horizon Power switching operations procedures and to Field Instruction 6.6 – Switching Authorisation.

Vicinity – a situation where it is unlikely that a person will either directly or through any conducting medium come within the relevant safe approach distance.

Vicinity Authority – Horizon Power's permit which authorises work near live electrical apparatus or electrical apparatus which must be treated as live.

Vicinity–Work in Progress tag – an approved tag attached to electrical apparatus to indicate work is being performed under the conditions of a Vicinity Authority.

Warning–Out of Service tag – an approved tag attached to electrical apparatus indicating

the electrical apparatus is damaged or defective, and hence out of service.

Work party – the group of people working under a work permit, consisting of the Recipient in Charge and Recipients signed onto that work permit.

Work permit – a document of written authorisation, which allows access to, or work near, or the testing of, electrical apparatus. The three work permits are the Electrical Access Permit, the Vicinity Authority, and the Sanction to Test.

Work package – the compilation of authorised documents used by Horizon Power which contain all the necessary information for a specific piece of planned work, and describing the scope of work, job specifications, materials, equipment required, etc.

Working earth – approved earthing equipment, additional to switching program earths, applied to electrical apparatus following the issue of an Electrical Access Permit.

Work party member – A member of the work team under the supervision of the work party leader or supervisor.

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3 ROLES AND RESPONSIBILITIES

This Networks Permit to Work Training Manual describes five key roles of personnel who require work permits to carry out work on Horizon Power’s Transmission and Distribution electrical apparatus:

1. the Switching Operator (SO)

2. the Issuing Officer (IO)

3. the Recipient in Charge (RIC)

4. the Tester in Charge (TIC)

5. the Recipient.

Horizon Power and contractor personnel who are authorised to act in a specific role shall be fully familiar with the responsibilities for that role.

Should an individual be involved in an incident relating to the role they were undertaking, they will be held accountable though any subsequent investigation to the responsibilities of that role.

The responsibilities of each key role in this manual are described below.

3.1 Switching Operator

The SO is to carry out their duties only to the level of their switching operations authority.

The SO is responsible for:

1. requesting access to the network with preparation of a Distribution Network Access Request (DNAR)

2. when required, writing and checking a switching program to satisfy the requested scope of work

3. carrying out switching operations in accordance with the switching program

4. application and removal of programmed earths

5. liaising with the IO to prepare the work permit.

3.2 Issuing Officer

The IO must be competent and capable of carrying out their responsibilities safely.

The IO is responsible for:

1. ensuring that there are no other active work permits that may interfere with the intended work

2. producing a legible work permit with a precise description of the conditions under which it is being issued and accepted

3. arranging for the installation of barriers, as necessary, to clearly define the work area described in the work permit

4. issuing the work permit to the RIC or TIC

12 Roles and responsibilities


5. always showing (where practicable, or on request by the RIC or TIC and where possible the Recipients, the following:

a) limits of the work area

b) all isolation points

c) all adjacent live apparatus

d) location of the applied programmed earths

e) any other safety precautions taken

6. cancelling the work permit, after confirming with the RIC or TIC that all Recipients have signed off work permit and are clear of electrical apparatus, and that the work permit is relinquished by the RIC or TIC.

3.3 Recipient in Charge

3.3.1 Responsibilities common to all work permits

The 11 responsibilities of the RIC common to all work permits are:

1. confirming that the work permit has the HPCC-registered permit number

2. understanding the conditions of the work permit as described by the IO

3. signing onto the work permit in the relevant section to accept the work permit

4. requesting that each member of the work party confirm his or her authorisation to work on the Horizon Power network as a Recipient, and for each Recipient to confirm that he or she is capable of working safely

5. explaining the conditions of the work permit and the site and job conditions to all members of the work party

6. instructing all members of the work party to sign onto the work permit before beginning their work

7. informing all Recipients of any change to the work permit or conditions under which the party is working

8. making all subsequent personnel arrivals and departures aware of the conditions imposed by that work permit, and instruct those personnel to sign on or sign off the work permit respectively

9. instructing all Recipients to sign off the work permit on completion of their work and before relinquishing the permit

10. contacting HPCC to notify them that the work permit is still ‘active’ and to record the new work permit number on the work permit

11. completing all relevant sections of the work permit before relinquishing the permit.

Roles and responsibilities 13


3.3.2 Recipient in Charge of an EAP

The RIC who accepts an EAP is responsible for ensuring that:

1. the switching program number is recorded on the EAP

2. the isolation and programmed earthing has been carried out and is adequate for the safe performance of the scope of work

3. de-energisation of the electrical apparatus in the scope of work is proved and, where applicable, working earths are applied and removed

4. working earths are recorded in section 4 of the EAP

5. if the EAP carries over to the next working day, checking before work begins that:

a) none of the conditions of the work permit have changed, and

b) the work party are briefed accordingly before signing onto the EAP.

3.3.3 Recipient in Charge of a VA

The RIC who accepts a VA is responsible for ensuring that all Recipients:

1. comply with the Safe Approach Distances at all times, and

2. remain within the boundaries of the working area, within which the work is to be undertaken

3. if the VA carries over to the next working day, checking before work begins that:


b) the work party are briefed accordingly before signing onto the VA.

3.3.4 Recipient in Charge of an Access to Live Electrical Apparatus

This section is pending further development.

3.4 Tester in Charge – Sanction to Test

The TIC is the authorised tester to whom a STT permit has been issued.

The TIC who accepts a STT permit is responsible for ensuring:

1. that isolations (including secondary isolations) and earthing have been carried out and are adequate for the safe performance of the scope of work

2. the electrical apparatus or part thereof is ready for testing or adjustment

3. the safety of other work parties on the worksite, by informing the Person in Charge of those work parties when equipment is due to be energised

4. permission is obtained from the IO if equipment is to be operated, earths are to be removed or additional earths are to be applied. This may be given in writing in Section 2 of the STT permit

5. where either the test is successful or further work is required, the STT is relinquished

14 Roles and responsibilities


6. if the STT carries over to the next working day, checking before work begins that:


b) the work party are briefed accordingly before signing onto the STT.

3.5 Recipient

The Recipient shall adhere to all instructions of the RIC or TIC of the work permit on which they are a Recipient, subject to the requirements of the WA Occupational Safety and Health Regulations 1996 and Horizon Power policies and procedures.

Specifically, the Recipient is responsible for:

1. being satisfied that they have been made aware of the permitted area of access to electrical apparatus

2. being satisfied that they have had the isolation points explained and their locations identified

3. being satisfied that they have had all earthing explained and their locations identified

4. being satisfied that they have had all adjacent live points explained and their locations identified

5. ensuring that they sign onto the work permit in a legible manner, before they commence their part of the work

6. informing the RIC of an intended absence from the worksite, and signing off the work permit before they leave site

7. checking the current working conditions with the RIC, after absence from the worksite, and signing on the work permit before re-commencing their part of the work

8. ensuring that they sign off the work permit after they complete their part of the work.

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4 WORK PERMITS

All work permits are designed for the safety of all personnel and the electrical apparatus. The appropriate work permit is used to grant access for work on or near Horizon Power’s Transmission and Distribution electrical apparatus.

The three work permits associated with the Networks Permit to Work are the:

1. Electrical Access Permit (EAP)

2. Vicinity Authority (VA)

3. Sanction to Test (STT).

All Horizon Power and contractor personnel deemed to be Authorised Persons must understand each work permit’s specific application, who is authorised to work with that permit, and the procedures and variations within the associated permit.

This section describes the common and unique procedures associated with each of these three work permits.

A fourth work permit and its associated procedures are pending, and the subject of further development. The proposed work permit is the Access to Live Electrical Apparatus (ALEA) work permit. This permit will be used for work on energised electrical apparatus. A sample ALEA is shown in Appendix E of these Participant Course Notes.

4.1 Electrical Access Permit (EAP)

4.1.1 Purpose

No Horizon Power employee or contractor (who is not authorised to carry out HV live work) shall work on high voltage apparatus that is live or is capable of being made live unless an EAP has been issued.

Access is permitted to electrical apparatus only after that; apparatus has been isolated, proved de-energised, and earthed (for HV work) or short-circuited (for LV work).

The EAP is a written document that stipulates the scope of work and the permit conditions under which that work is to be carried out. It describes to Recipients:

1. the job area and the scope of work

2. the isolation points

3. the earthing points (i.e. program / permit earths and additional working earths)

4. Any additional safety precautions.

4.1.2 Issue of Electrical Access Permit

The EAP is issued in accordance with Horizon Powers permit procedures.

HPCC generates the EAP permit number and informs the IO of the number. The IO records that EAP permit number on the EAP permit in the Permit No. field.

16 Work permits


All members of the work party, including all assistants and plant operators, must sign the EAP. This is to confirm the conditions of the EAP have been adequately explained by the RIC.

4.1.3 Issue with Sanction to Test

An EAP for work and an STT for test shall not be issued concurrently on the same electrical apparatus.

An EAP and an STT can be issued concurrently on the same circuit where the EAP is issued on the primary electrical apparatus and the STT is issued on secondary electrical apparatus, and there is clear and documented isolation between the primary and secondary apparatus.

4.1.4 Issue of Electrical Access Permit

The EAP is issued in accordance to Horizon Powers permit procedures

4.1.5 Completion of work

The EAP is relinquished and cancelled in accordance with Horizon Powers permit procedures.

4.1.6 Earthing

4.1.6.1 Programmed earths

Programmed earthing must be completed by, or under the supervision of, the SO. An Authorised Person may be instructed by the SO to apply these earths before the EAP is issued, or remove these earths after the EAP is cancelled.

4.1.6.2 Working earths

The RIC is responsible for the application and removal of all working earths on site. An Authorised Person may be instructed by the RIC to apply working earths after the EAP is accepted, or remove the working earths before the EAP is relinquished.

4.1.7 Recording of earthing applications

All programmed earths applied shall be recorded in section 3 of the EAP by the IO.

All working earths applied shall be recorded in section 4 of the EAP by the RIC.

Note: Programmed earths applied and removed by an Authorised Person shall be done so with the SO present.

Note: Working earths applied and removed by an Authorised Person shall be done so with the RIC present.

Work permits 17


4.2 Vicinity Authority (VA)

4.2.1 Purpose

The VA allows personnel to work safely near electrical apparatus that is live or could be made live.

The VA does not allow access to any electrical apparatus (exception for G&B work). When working near electrical apparatus that is live or can be made live, consideration should be given to carrying out the work under an EAP.

The VA may be used in conjunction with the EAP and the STT permit.

4.2.2 Issue of Vicinity Authority

The VA is issued in accordance with Horizon Powers permit procedures.

HPCC generates the VA permit number and informs the IO of the VA of that number. The IO records that VA permit number on the VA permit in the Permit No. field.

All members of the work party, including all assistants and plant operators, must sign the VA. This is to confirm the conditions of the VA have been adequately explained by the RIC.

Where possible, the electrical apparatus that is live must be clearly defined by the use of barriers, notices or other means.

4.2.3 Completion of work

The VA is relinquished and cancelled in accordance with Horizon Powers procedures.

4.3 Access to Live Electrical Apparatus work permit

This section is pending, and the subject of further development.

4.4 Sanction to Test (STT)

4.4.1 Purpose

The STT permit allows access to specific electrical apparatus by personnel who are required to test new or maintained electrical apparatus, carry out adjustments to electrical apparatus, or fit, test, and remove test devices.

Note: Where any work is undertaken near live high voltage electrical apparatus the first protection equipment, if capable of automatic re-energisation, shall be disabled

and have a Caution–Vicinity Work in Progress tag attached.

If the first protection equipment is not capable of automatic re-energisation (for example, a DOF) no further actions are required.

Note: For every VA issued, a Safety Observer shall always be assigned and briefed on their specific Safety Observer responsibilities for that job.

18 Work permits


4.4.2 Issue of Sanction to Test

The STT is issued in accordance with Horizon Powers procedures.

HPCC generates the STT permit number and informs the IO of the number. The IO records that STT permit number on the STT permit in the Permit No. field.

All members of the work party, including all assistants and plant operators, must sign the STT. This is to confirm the conditions of the STT have been adequately explained by the TIC

Any alterations to the manner in which the electrical apparatus has been isolated are permitted only with the knowledge and approval of the IO, who shall give written instructions on the STT.

4.4.3 Issue with Electrical Access Permit

An EAP for work and an STT for test shall not be issued concurrently on the same apparatus.

An EAP and an STT can be issued concurrently on the same circuit where the EAP is issued on the primary apparatus and the STT is issued on secondary apparatus, and there is clear and documented isolation between the primary and secondary apparatus.

4.4.4 Issue of Sanction to Test

When a test or adjustment on the electrical apparatus is required, the EAP must be cancelled. The RIC will generally make this decision based on the scope of work and the situation at the time.

Where the EAP has been cancelled, the STT is issued in accordance with Horizon Powers procedures.

4.4.5 Completion of test

4.4.5.1 Apparatus fit for service

When the TIC deems the test is complete and the apparatus is subsequently fit for service, they relinquish the STT in accordance with Horizon Powers procedures.

4.4.5.2 Further work required

When the test is complete, but further work is required, the TIC sequentially:

1. relinquishes the STT in accordance with Horizon Powers procedures

and as the RIC:

2. arranges for the IO to prepare a new EAP for the relevant scope of work. On its issue and after accepting the EAP, instructs work party members to sign onto the work permit according to procedures.

The TIC shall ensure a copy of the STT, and any associated switching program, is retained in the works package.

19


5 TAGS

Four types of tags are used in the Horizon Power Networks Permit to Work:

1. Danger–Do Not Operate tag

2. Caution–Vicinity Work in Progress tag, and

3. Danger – Restricted Used tag

4. Warning–Out of Service tag.

Tags are placed on electrical apparatus to indicate that item’s association with a specific switching program and/or work permit.

All Horizon Power and contractor personnel deemed to be authorised persons shall understand and comply at all times with:

1. each tag’s specific application on electrical apparatus and with its relevant work permit

2. the information written on the tag.

No unauthorised person shall interfere with a tag that is attached to any electrical apparatus. No person shall in any way add, alter, or remove any information written on the tag.

5.1 Danger–Do Not Operate tag

The Danger–Do Not Operate tag is an approved tag attached to electrical apparatus as an instruction against the operation of that electrical apparatus. It is used to protect all parties from inadvertent operation of the apparatus at the isolation points.

Danger–Do Not Operate tags shall only be used in conjunction with switching programs and electrical apparatus access requirements.

Each Danger–Do Not Operate tag shall be securely attached in a prominent position to the electrical apparatus being used as a point of isolation. The electrical apparatus to be worked on must not have a Danger–Do Not Operate tag attached.

Specific information shown on the Danger–Do Not Operate tag is:

1. the item of plant to which the Danger tag is attached which makes that item of plant an isolation point

2. the ENMAC work permit or switching program number

Note: Danger–Do Not Operate tags must only be removed from primary electrical apparatus by the SO who attached the tag. Where that SO is unavailable to remove the tag, another authorised SO can remove those tags in accordance with Horizon

Power's switching operation procedures.

Under no circumstances must a RIC remove a Danger–Do Not Operate tag from a primary point of isolation!

20 Tags


3. the date on which the Danger tag was attached to the item of plant

4. the telephone number and name of the person who attached the Danger tag.

5.1.1 Front of Danger–Do Not Operate tag

Figure 1 - Example of a Danger–Do Not Operate tag (front) This tag is attached to the actual isolation points on the network.

They are not attached to the item of plant being worked on.

5.1.2 Back of Danger–Do Not Operate tag

Figure 2 - Example of a Danger–Do Not Operate tag (back) All Danger–Do Not Operate tags must have the permit reference number,

or more commonly, the Switching Program number recorded.

5.2 Caution–Vicinity Work in Progress tag

The Caution–Vicinity Work in Progress tag is used with the VA and its associated switching program. It is attached to apparatus listed on the VA, for example, auto-reclose devices, circuit breakers.

The Caution–Vicinity Work in Progress tag is attached by an appropriately trained and authorised person to the point of control for that protection equipment. Electrical apparatus with a Caution–Vicinity Work in Progress tag attached shall not be operated, altered, or removed by any person other than the SO. Where that SO or RIC is unavailable, another authorised SO or RIC can operate, alter, or remove that tag in accordance with Horizon Power's switching operation procedures.

Tags 21


5.2.1 Remote operation of protection equipment

A Caution–Vicinity Work in Progress tag shall always be fitted to the field protection equipment, which has been operated manually.

Where the protection equipment has been operated remotely by HPCC, there is no requirement to fit a tag if the location is remote from the immediate work site.

Specific information shown on the Caution–Vicinity Work in Progress tag is:

1. the ENMAC work permit number

2. the RIC of the VA and the date the VA has been issued

3. the department and the location of the person who attached the tag

4. the telephone number and name of the person who attached the tag.

5.2.2 Front of Caution–Vicinity Work in Progress tag

Figure 3 - Example of a Caution–Vicinity Work in Progress tag (front) This tag is attached to remote control points on the network.

5.2.3 Back of Caution–Vicinity Work in Progress tag

Figure 4 - Example of a Caution–Vicinity Work in Progress tag (back)

5.3 Danger–Restricted Use tag

The Danger–Restricted Use tag is used with the STT permit. It is attached to apparatus listed on the STT permit. It is used to indicate that the apparatus can be accessed for testing

22 Tags


purposes only. It also indicates that the TIC can operate switches within the isolated area for the purpose of the testing.

The Danger–Restricted Use tag shall be attached by the SO. The Danger–Restricted Use tag shall be securely attached in a prominent position to the electrical apparatus being tested.

The Danger–Restricted Use tag shall not altered or removed by any person other than the SO who attached the tag. Specific information shown on the Danger–Restricted Use tag is:

1. the item of plant to which the tag is attached

2. the ENMAC work permit or switching program number

3. the SO and his/her authorisation number

4. the date the STT has been issued

5. the telephone number of the person who attached the tag.

5.3.1 Front of Danger-Restricted use tag

Figure 5 - Example of a Danger–Restricted Use tag (front)

5.3.2 Back of Danger-Restricted use tag

Figure 6 - Example of a Danger–Restricted Use tag (back)

Tags 23


5.4 Warning–Out of Service tag

The Warning–Out of Service (OOS) tag is attached to any electrical apparatus that is considered unsafe to operate and cannot be immediately restored to an in-service state. Such electrical apparatus shall be considered out of service and will require maintenance, testing, or other operational activities to return it to service.

A Warning–Out of Service tag is applied by the person who initially decides that the electrical apparatus is out of service. The electrical apparatus to which the OOS tag is attached may or may not require operation at the time. If operation is required, the person who applies the OOS tag must be authorised to operate that apparatus.

Once the OOS tag is attached, the person must notify HPCC immediately, with details of the location of that tag and the reason for its attachment.

A Warning–Out of Service tag on electrical apparatus is removed only by the person who rectifies the situation or makes the apparatus ready for service.

Electrical apparatus that only has an OOS tag attached shall not to be considered a point of isolation. Only when that item subsequently has a Danger–Do Not Operate tag attached, will that apparatus be considered a point of isolation.

5.4.1 Warning–Out of Service tag and Danger–Do Not Operate tag

Where a Warning–Out of Service tag and Danger–Do Not Operate tag is attached to the same electrical apparatus, the Warning–Out of Service tag shall be removed before the Danger–Do Not Operate tag is removed. The Warning–Out of Service tag shall not be removed until that apparatus is ready for service

The only exception to this is under emergency switching conditions where the appropriate authority permits the Do Not Operate tag to be removed while the Warning–Out of Service tag is still attached.

Each Warning–Out of Service tag shall be securely attached in a prominent position to the electrical apparatus.

Specific information shown on the Warning–Out of Service tag is:

1. the electrical apparatus covered by the tag

2. the reason for attaching the tag

3. a reference number, e.g. the apparatus ID number or serial number

4. the name of person attaching the tag

5. date tag is fitted and the telephone number of the person attaching the tag.

Note: Danger–Restricted Use tags shall be initially fitted to and removed from electrical apparatus on completion of the testing by a SO. Where the SO who

attached the tag is unavailable to remove the tag, another authorised SO can remove the tag in accordance with Horizon Power's procedures

24 Tags


5.4.2 Front of Warning–Out of Service tag

Figure 7 - Example of a Warning–Out of Service tag (front) Remember—any item of plant with this tag attached is not be considered a point of isolation,

unless it also has a Danger–Do Not Operate tag attached.

5.4.3 Back of Warning–Out of Service tag

Figure 8 - Example of a Warning–Out of Service tag (back)

.

25


6 LOCKS

As part of the normal Network Permit to Work isolation procedure, the SO shall use a Horizon Power isolation lock on a point of isolation if that apparatus has a locking facility.

For inter-connectable normally open points that could be closed a Do Not Operate Danger tag shall be attached to a high visibility warning sign. This attachment shall be made using the relevant lock. The warning sign shall be attached to the structure.

6.1 Transmission

Locks used for transmission switchgear are a combination of the old NK6 lock and the NMK6 lock. The NK6 lock is mainly used for 66kV and the NMK6 lock is used for switchgear that is new or has had undergone maintenance. Earth switches have individual locks that are kept on a mimic board in the control/switch room.

6.2 Distribution

All distribution switchgear is locked with a NMK2 lock.

26 Locks



27


7 APPLICATION OF WORK PERMITS

The following sections in this manual detail the parameters and procedures required by the Horizon Power Networks Permit to Work. Every person who works under a Horizon Power work permit shall be fully familiar with these procedures in the context of their own role(s) and responsibilities.

7.1 Access to network electrical apparatus

For work on or near Horizon Power’s Transmission and Distribution electrical apparatus:

1. for work on in-service high voltage electrical apparatus, an appropriate work permit shall be issued before any approved work commences

2. for work on in-service low voltage electrical apparatus that requires short circuiting, an EAP shall be issued

3. for work on Live in-service low voltage (LV) electrical apparatus that does not require any de-energisation for work to take place, no work permit is required.

7.2 Work permit durations

Regardless of the type of work permit, there is no stipulated duration for the life of an active work permit, unless certain situations require the work permit to be cancelled.

At all times where a situation may suggest a cancellation of the work permit, the RIC shall carry out a risk assessment to determine the most appropriate action to take.

7.2.1 When a work permit is cancelled

Conditions under which a work permit will require cancellation are:

1. at the normal completion of the scope of work and the work permit is relinquished

2. where relevant, there are changes required to:

a) the location of the work and at the new location the scope of work also changes (see 7.6.3)

b) isolation points or programmed earths, or

c) the scope of work

3. for a VA, if protection equipment auto-reclose function needs to be enabled at the end of a shift (which will require a new VA if work is to continue at the next shift)

Note: Electrical apparatus deemed out of use

A Horizon Power work permit is not required where electrical apparatus is declared out of use, that is, the electrical apparatus has been isolated from any source of

electrical supply by the removal of a permanent length of conductor or cable (HV) or the creation of a physical gap of 150 mm (LV). Refer to Horizon Power Electrical

Safety Standards.

28 Application of work permits


4. where the scope of work will be delayed and the duration of that delay is unknown

5. at the request of HPCC.

7.3 Dual roles under the same work permit

Conditionally, people with certain roles shall carry out dual roles under the same work permit.

7.3.1 Switching Operator or Issuing Officer as Recipient in Charge

Where no other person on the worksite other than the SO or the IO is authorised to be a RIC, then that SO or IO shall also be the RIC on that work permit.

Under normal circumstances, it should be planned for an authorised RIC other than the SO or IO at the worksite.

7.3.2 Switching Operator or Issuing Officer as Recipient

If remaining at the worksite, the SO and IO shall sign onto that work permit as a Recipient, regardless of whether or not they are to carry out work under the work permit.

By being a Recipient on that work permit, the SO and IO will remain aware of all aspects of the work permit and the work being undertaken.

7.3.3 Recipient in Charge or Tester in Charge as Recipient

The RIC or TIC is not required to sign as Recipient of that work permit.

As the RIC, they have declared they fully understand the scope of work and conditions of that work permit, which meets the same responsibilities as those of the Recipient.

7.3.4 Recipient in Charge or Tester in Charge dual role

An individual may carry out the dual roles of an authorised RIC and an authorised TIC, providing they are adequate training and are authorised for each role.

7.3.5 Recipient in Charge and operational work

The RIC may perform operational work providing the role and responsibilities of the RIC in relation to the work permit are not compromised in the performance of the operational work.

7.4 Preliminary preparation of work permit

Three key activities are carried out in preparing the work permit for the relevant scope of work:

1. a request to access the network, and

Note: Like the Recipient, the RIC can only carry out work under the work permit if they are adequately trained and are authorised to do so.

Application of work permits 29


2. an associated switching program is carried out to isolate the electrical apparatus to be worked on, and

3. the work permit is prepared.

7.4.1 Request for access to the network

The following steps apply prior to the switching program being carried out.

1. A request to access the network is made by the SO to HPCC.

2. On receiving the switching programme number, the switching program is written by the SO to accommodate the scope of work.

3. The switching program is checked for its accuracy and suitability by another authorised SO.

4. Following the checking and approval, HPCC will carry out a system check 24 hours before the scheduled switching. HPCC will then notify the SO that the switching program can or cannot be carried out.

7.4.2 Switching program carried out

The switching program is carried out by the SO, who attaches Danger–Do Not Operate tags to the primary electrical apparatus that are used as points of isolation, and programmed earths are applied.

Where programmed earths are applied at the isolation point a single Danger-Do Not Operate tag shall be attached at the isolation point.

Where a programmed earth is applied at a different location to the isolation point a Danger-Do Not Operate tag shall be attached at both the isolation point and at the location of the programmed earths.

7.4.3 Work permit prepared

The work permit is prepared by the IO to accommodate the scope of work, which will include recording the switching program number relevant to that work on the work permit.

The IO contacts HPCC to register the work permit. HPCC will register the permit and provide the IO with a work permit number.

The IO records that work permit number on the work permit in the relevant field.

At this point, the work permit has been prepared and the standard Networks Permit to Work Standard procedure is followed.

Note: The person undertaking IO responsibilities with a D-restriction (Under Direction) can prepare and issue the work permit under the direction of an

authorised IO.

Only the authorised IO shall communicate with HPCC for all matters related to the active work permit, including the initial registration and subsequent cancellation.

They can only issue that work permit when they are under the direction of an

authorised IO with the same or higher switching level than the level of switching being performed.



7.5 Network Permit to Work Procedure

The Network Permit to Work procedure includes the following seven basic steps:

1. the IO issues the work permit

2. the RIC or TIC accepts the work permit

3. the RIC or TIC explains the work permit conditions to Recipients

4. the Recipients sign onto the work permit

5. the work is undertaken under the active work permit

6. the RIC or TIC relinquishes the work permit

7. the IO cancels the work permit.

7.5.1 Issue of work permit

Before the issue of a work permit, the IO shall arrange for the installation of barriers, as necessary, to clearly define the work area described in the work permit.

The IO issues an EAP or VA to an authorised RIC, and an STT to an authorised TIC.

When issuing a work permit, the IO shall fully describe the conditions stated on the work permit to the RIC or TIC for an STT and, where possible, the initial Recipients.

The IO must show the RIC or TIC, where practicable (or on their request), and where possible the Recipients:

1. the limits of the work area

2. all isolation points (for an EAP or STT)

3. all adjacent live apparatus (for an EAP or STT)

4. the locations of the applied programmed earths (for an EAP), and

5. any other safety precautions taken.

The IO should satisfy themselves that the conditions and precautions they have described have been fully understood by the RIC or TIC. The IO should be prepared to ask questions of the RIC or TIC to confirm their understanding.

Only when the IO is satisfied that the RIC or TIC does understand the conditions of the work permit, can they issue the permit by signing on the relevant Issuing section of that permit.

7.5.2 Recipient in Charge or Tester in Charge accepts work permit

The RIC or TIC must accept the work permit by signing on the relevant section of the permit in the presence of the IO. Only in the case of a remote issue of a work permit shall the RIC or TIC accept the work permit without the IO being present.

On the RICs acceptance of the work permit, the work permit shall be considered active and the work can begin. If the work directly involves other people, the RIC must ensure those people sign on the work permit before they begin any work.



7.5.3 Recipient in Charge or Tester in Charge explains work permit conditions to work party

The RIC or TIC shall fully describe and explain the conditions stated on the work permit to work party members. If requested by the work party members, the RIC or TIC must show the work party members:

1. the limits of the work area

2. all isolation points (for an EAP or STT)

3. all adjacent live apparatus (for an EAP or STT)

4. the locations of the applied programmed earths (for an EAP), and

5. any other safety precautions taken.

Only when the RIC or TIC is satisfied that the work party members understand the conditions of the work permit, will they instruct the work party members to sign onto the permit in the relevant section before they can begin their part of the work.

7.5.4 Work party members sign onto work permit

All work party members, regardless of their allocated tasks, shall sign onto the work permit before they begin their work

By signing onto the work permit, the work party member is acknowledging they accept the conditions of the work permit.

The work party member shall sign on with a legible signature, pay no. (in the case of Horizon Power employees) and date of sign on. Non-Horizon Power work party members only require a legible signature and date.

7.5.5 Working proceeds under active work permit

The active work permit shall be kept on site while the work is in progress. During the active life of the work permit, the RIC or TIC is responsible for:

1. keeping the work permit in a prominent and secure location on site, and free from damage

2. keeping all Recipients informed in a timely and comprehensive manner of the work permit’s conditions and site conditions

3. liaising with other work parties or individuals on site, particularly where the scope of work will or may have a direct effect on those parties or individuals

4. adhering to the standard procedures in response to:

a) changes to the work permit’s conditions or site conditions

b) changes to the work party

Note: A work party member by signing onto a work permit becomes a Recipient on that work permit and as a Recipient shall comply with the conditions on that work

permit



c) newly identified hazards or a change to existing hazards

d) the arrival on site of individuals who must sign onto the work permit if they intend to work under the work permit’s scope of work

e) any request made by HPCC for a change to the work scope or permit conditions.

7.5.5.1 Recipients sign off work permit

Regardless of the type of work permit, at the end of each working day or shift, all Recipients shall:

1. ensure their part of the work area has been left safe and secure, and

2. then sign off that work permit before leaving the worksite.

The Recipient by signing off the work permit is acknowledging that for an EAP they can no longer access the electrical apparatus or for a VA that they can no longer work in the vicinity of the electrical apparatus.

The Recipient shall sign off with a legible signature, pay no (in the case of Horizon Power employees) and date of sign off. Non-Horizon Power Recipients only require a legible signature and date.

7.5.5.2 Recipient in Charge or Tester in Charge contacts HPCC before work each day or shift (Work Permit is to remain active)

The RIC or TIC shall contact HPCC before work begins each day or shift. This activity shall be done before the daily job briefing between the RIC and their work party.

The RIC shall confirm with HPCC that:

1. their work permit is still active from the break in work

2. the switching program number on their work permit is still active

3. all conditions related to their work permit are either unchanged or have changed (see 7.6.3 for changes to the scope of work)

The RIC shall inform their work party (at the job briefing) of the present status of the work permit.

The RIC then instructs the work team members to sign onto the work permit.

7.5.6 Recipient in Charge or Tester in Charge relinquishes work permit

When the RIC or TIC deems the scope of work to be complete or a situation requires it so, they will relinquish the work permit, thereby making it ready for cancellation and a return to service of the electrical apparatus.

To relinquish the work permit, the RIC or TIC:

1. ensures the electrical apparatus is safe and ready for return to service

2. removes or arranges for the removal of any working earths associated with the work permit and record their removal in the relevant section on the work permit



3. instructs Recipients to sign off the work permit in the relevant Sign Off section of the work permit

4. completes all questions in the relevant Relinquishment section and signs off the work permit

5. notifies the IO that the work has ceased, the work permit has been relinquished, and all Recipients are clear of the electrical apparatus.

The RIC will ensure a copy of that work permit is retained in the works package.

7.5.7 Issuing Officer cancels work permit

On notification from the RIC that a work permit has been relinquished, the IO:

1. completes all questions in the relevant Cancellation section and signs off the work permit

2. notifies HPCC of the cancellation of the work permit.

After the work permit has been formally cancelled, HPCC and the SO liaise with each other to restore the isolated electrical apparatus to an operational state.

7.5.7.1 Retention of work permit documents

On the restoration of the electrical apparatus, the cancelled work permit and its completed switching program shall be retained in a secure location for a period of no less than seven years from their cancellation dates.

These documents shall be stored electronically if possible. Paper documents should be scanned and stored electronically.

The retained documents shall be retrievable for quality assurance audits, investigations, or continuous improvement purposes.

Specifically:

1. the SO is responsible for the retention of their completed switching program, and

2. the IO is responsible for the retention of their cancelled work permit.

Note: After an EAP, VA, or STT has been relinquished, no persons can approach or gain access to the electrical apparatus covered by the work permit. Electrical

apparatus that was covered by a relinquished work permit shall be considered live and in an operational state.



7.6 Variations to Permit procedure

There are nine variations to the Network Permit to Work procedure. When a variation arises, the work permit’s RIC shall follow the relevant procedure described below.

The nine variations to the permit procedure are:

1. Remote procedures for work permits

2. Multiple work parties within the same isolated area

3. Vicinity Authority and protection auto reclose disabled (VA to remain active)

4. Change to the scope of work

5. Recipient leaving the worksite

6. Transfer of RIC responsibilities

7. Absent Recipient or RIC

8. Extension to a section of the work permit

9. Emergency situations

7.6.1 Remote procedures for work permits

The procedure allows for the remote issue and cancellation of VA permits under all circumstances.

The procedure only allows for the remote issue and cancellation of EAPs and STT permits under certain circumstances. These circumstances are:

1. for work being undertaken by Remote Community Utilities Workers in their communities, and / or

2. for emergency situations, or

3. where the IO contacts HPCC to request a remote issue or cancellation of the work permit.

7.6.1.1 Remote issue of work permit

The procedure for the remote issue of a work permit is described below.

1. The IO prepares the original work permit off-site and signs in the Issuing section.

2. The IO makes audio-visual contact (where technology allows) with the on-site RIC who is delegated as the proxy IO.

Note: Any one of the variations described below may not exactly address a situation that arises in the field.

To resolve the situation, the RIC or TIC should consider the best possible combination of the permit procedures, while always complying with the procedures

within. For any situation, the RIC or TIC should always consider discussing the situation

initially with the IO or subsequently with HPCC.

Note: For EAPs and STTs, the remote issue of those permits shall only occur after any programmed earthing has been applied by an authorised SO.



3. It is preferable that the IO sends the proxy IO a clear visual image of the original work permit.

4. The proxy IO transcribes the original work permit information to the on-site work permit using the visual image or, where an image is not available, verbally with the IO.

5. It is preferable that when the original work permit information has been transcribed to the on-site work permit, the proxy IO sends the IO a clear visual image of the on-site work permit showing the transcribed information.

6. The proxy IO contacts the IO and reads each item on the on-site work permit back to the IO.

7. The IO and the proxy IO confirm that they have exchanged and recorded on their respective work permits:

a) the switching program number

b) the ENMAC work permit number, and

c) the Book Number of the on-site work permit

8. The proxy IO signs the on-site work permit on behalf of the IO in Issuing section of that work permit.

At this point, the on-site work permit is issued.

The RIC accepts the work permit in accordance with the procedure.

7.6.1.2 Remote cancellation of work permit

The procedure for the remote cancellation of a work permit is described below.

1. The RIC relinquishes the on-site work permit.

2. The proxy IO cancels the on-site work permit in the Cancellation section of the work permit.

3. The proxy IO contacts the IO to confirm they have cancelled the on-site work permit (and previously relinquished the work permit as the RIC).

4. It is preferable that the proxy IO will send the IO a clear visual image of the cancelled on-site work permit.

5. The IO contacts the proxy IO and verbally confirms that the on-site work permit information for relinquishment and cancellation has been transcribed to the original work permit, and that information is accurate and complete.

At this point, both the on-site work permit and the original work permit are cancelled.

7.6.2 Multiple work parties within the same isolated area

Where all work parties can see each other at all times within the same isolated area, then those multiple work parties shall work under the same work permit.

Note: The RIC on-site is delegated to carry out the role of proxy IO for the remote issue and cancellation procedures.



Where the above condition does not exist, each work party shall be issued with its own work permit within the same isolated area.

Where multiple work parties within the same isolated area are to work under the same work permit, then:

1. each work party’s scope of work shall be detailed on that same work permit

2. where working earths have been applied by each work party, then those working earths have been recorded on that same work permit by the RIC.

The work permit(s) associated with multiple work parties within the same isolated area shall be used.

7.6.2.1 Conditions for multiple work parties under the same work permit

Where multiple work parties are working under the same work permit, the coordination of those parties in relation to the work permit shall be the responsibility of that work permit’s RIC.

7.6.2.2 Conditions for multiple work parties issued with own work permits

The RIC of each work permit shall communicate with each other before work begins each day and throughout their respective jobs, to ensure they are all aware of each other’s work permit conditions and scopes of work.

Before their work begins on each day or shift, the RIC of each work permit will conduct a job briefing with their respective work parties. This briefing will confirm the conditions of each work party’s work permit and their respective scopes of work from a safety and health viewpoint.

7.6.3 Vicinity Authority and protection auto reclose disabled (VA to remain active)

When work is being conducted under a VA where the auto-reclose function is disabled as a precaution for the work, the RIC shall:

1. contact HPCC and notify them that the VA has been signed off by the Recipients and work is completed for the day

2. contact HPCC at the start of the next work day and notify them that the work party are on site and the work is to recommence

3. record the new VA number on the VA (the number is generated and provided by HPCC)

4. explain the VA conditions to the work party

5. instruct the work party to sign onto the VA

Note: Remember

Multiple work permits cannot be used on the same apparatus!

It is critical that each work permit must be individually registered with HPCC



At this point, the work can re-commence.

7.6.4 Change to the scope of work

7.6.4.1 Electrical Access Permit and Sanction to Test

An EAP and an STT can remain active if the location of work changes, but the scope of work and the isolated area under that permit remain unchanged.

Where the actual work in the field requires a change to the scope of work described on the EAP or STT, or the work moves outside the isolated area detailed on that permit, then that work permit shall be cancelled and a new work permit issued to accommodate the new scope of work or the re-location of that work.

The cancellation of the EAP or STT and the issue of a new EAP or STT shall be carried out in accordance with Horizon Powers procedures.

7.6.4.2 Vicinity Authority

A VA can remain active if the location of work changes but the scope of work and the protection zone’s electrical apparatus described on that VA remain unchanged.

Where the actual work requires a change to the scope of work described on the VA or the work moves outside the protection zone detailed on that VA, then that VA shall be cancelled and a new VA issued. The new VA shall accommodate the new scope of work or change of work location to a new protection zone.

The cancellation of the VA and the issue of a new VA shall be carried out in accordance with Horizon Powers procedures.

7.6.5 Recipient leaving the worksite

A Recipient leaving the worksite, regardless of the duration of their absence, shall:

1. make any electrical apparatus they have worked on safe, and their part of the work area safe and secure

2. inform the RIC of their intended absence, and

3. then sign off the work permit.

If the work party member (previously a Recipient) returns to the worksite, they shall:

1. inform the RIC of their return to the worksite

2. have the RIC explain any changes to the conditions of the work permit or the site conditions, and

3. then sign onto the work permit.

At this point, the Recipient can re-commence work.

7.6.6 Transfer of Recipient in Charge & Tester in Charge responsibilities

Regardless of the type of work permit, a RIC or TIC of a work permit can transfer his or her responsibilities under that work permit to another authorised RIC or TIC.



It is the preferred procedure that a transfer of RIC / TIC responsibilities will only be carried out when both the outgoing and incoming RIC / TIC are on-site together. The responsibilities from one RIC / TIC to another on a work permit cannot be transferred remotely.

Only when the outgoing and the incoming RIC / TIC are both on site together and the transfer is immediate do Recipients not need to sign off the work permit. Under this condition, work may continue without interruption throughout the transfer procedure.

7.6.6.1 Transfer when both Recipients in Charge / Tester in Charge are together

The procedure for transferring the RIC or TIC responsibilities when both outgoing and incoming RIC / TIC are on-site together is described below.

1. The outgoing RIC / TIC and incoming RIC / TIC are on-site together.

2. The outgoing RIC / TIC informs the Recipients that the work permit is to be transferred to another RIC / TIC.

3. The outgoing RIC / TIC explains to the incoming RIC / TIC the isolations and conditions of the work permit and site conditions.

4. The outgoing RIC / TIC signs off the work permit in the relevant Transfer section. They can now leave the worksite.

5. The incoming RIC / TIC signs onto the work permit in the relevant Transfer section – they are now deemed as the work permit’s RIC / TIC.

6. The RIC / TIC confirms the transfer with the Recipients and notifies HPCC of the transfer of the work permit.

7.6.6.2 Transfer when incoming Recipient in Charge is not present

If the incoming RIC is not on site and the outgoing RIC must leave site immediately, the following procedure will apply.

1. The outgoing RIC informs the IO that they must leave site immediately.

2. The IO makes arrangements for an authorised RIC to go to site and accept the work permit.

3. The outgoing RIC instructs the Recipients to:

a) stop work and make the plant safe

b) sign off the active work permit

c) not to do any work under that work permit until the incoming RIC instructs the work party to do so.

4. The outgoing RIC signs off the active work permit in the Transfer section of the work permit, with date and time of sign off.

5. When the incoming RIC arrives on site, they contact the IO who explains the isolations and conditions stated on the work permit.

6. When fully aware of the work permit’s conditions and current site conditions, the incoming RIC signs on the permit in the Transfer section, including date and time of sign on.



7. The RIC explains the current conditions of the work permit to the work party members and instructs the work party members (previously the Recipients) to sign on the work permit.

8. Work may now re-commence.

7.6.7 Absent Recipient or Recipient in Charge

7.6.7.1 Absent Recipient

If a Recipient is found to be absent from the worksite and the work permit requires relinquishment, then the RIC or TIC is permitted to sign that Recipient off the permit.

The procedure for a RIC / TIC signing off a Recipient is described below.

1. The RIC /TIC conducts a search of the work area to confirm the Recipient is actually absent.

2. The RIC / TIC makes a reasonable attempt to locate or contact the absent Recipient. A reasonable attempt shall include:

a) phoning, and where possible, emailing the Recipient

b) visiting the Recipient’s home or local accommodation

c) leaving a message with persons associated with Recipient. The message should inform the Recipient that they are being signed off the work permit and to contact the RIC.

3. If the attempt to contact the Recipient is unsuccessful, the RIC / TIC shall continue at frequent intervals to make contact with the absent Recipient.

4. The RIC / TIC notifies the IO that a Recipient is absent and attempts to locate or contact the Recipient have been unsuccessful, and the Recipient is to be signed off the work permit by the RIC / TIC.

5. The RIC / TIC signs off the absent Recipient next to the Recipient’s name, using a legible signature and date

6. The RIC / TIC shall contact and inform the (absent) Recipient of their sign off, and the subsequent relinquishment of the work permit.

Once the absent Recipient has been signed off, the RIC / TIC can continue with the relinquishment procedure.

7.6.7.2 Absent Recipient in Charge or Tester in Charge

If a RIC or TIC is found to be absent from the worksite and the work permit requires a change that requires action from the RIC / TIC, then the IO shall authorise and control the transfer of that permit to another RIC / TIC.

As soon as the IO is informed of the RIC / TIC absence, they shall instruct the work party to cease work and make the electrical apparatus safe and the work area safe and secure.

The procedure for an IO transferring a RIC / TIC is described below.

1. The IO arranges for a search of the work area to confirm the RIC / TIC is actually absent.



2. The IO ensures there is a reasonable attempt to locate or contact the absent RIC / TIC. A reasonable attempt shall include:

a) phoning, and where possible, emailing the RIC / TIC

b) visiting the RIC / TIC home or local accommodation

c) leaving a message with persons associated with RIC / TIC. The message should inform the RIC / TIC that the work permit is being transferred to another RIC / TIC and to contact the IO.

3. If the attempt to contact the RIC / TIC is unsuccessful, the IO shall continue to arrange for frequent attempts to make contact.

4. The IO designates RIC / TIC responsibilities for that work permit to another authorised RIC / TIC who is on site.

5. If there is no authorised RIC / TIC on site, then the IO instructs the work party members to not approach the work area and to not carry out any work until an authorised RIC / TIC instructs them to do so.

6. The IO instructs the Recipients to sign off the work permit.

7. The IO shall sign off the absent RIC / TIC in the relevant Transfer section of the work permit.

8. The replacement RIC / TIC will sign onto the work permit in the relevant Transfer section – they are now deemed as the work permit’s RIC / TIC.

9. The RIC / TIC confirms the transfer with the work party members (previously the Recipients) and notifies HPCC of the transfer of the work permit.

The RIC / TIC is now able to action any changes required to the work permit.

7.6.7.3 Issuing Officer as the Recipient in Charge

The IO can assume the role and responsibilities of the RIC. If the IO chooses to be the RIC, then:

1. The IO shall instruct the Recipients to cease work and make the electrical apparatus safe and the work area safe and secure

2. The IO shall sign off the absent RIC in the relevant Transfer section of the work permit.

3. When fully aware of the work permit’s conditions and current site conditions, the incoming RIC (previously the IO) shall sign on the permit in the Transfer section, including date and time of sign on.

4. The RIC confirms the transfer with the Recipients and notifies HPCC of the transfer of the work permit.

5. The RIC explains the current conditions of the work permit to the Recipients

6. Work may now re-commence.



7.6.8 Extension to section of a work permit

Where all the fields in a section of a work permit are filled, and further information is to be recorded, an extended section may be attached to that work permit.

The procedure for extending a section of a work permit is described below.

1. The RIC or TIC acquires a new blank work permit of the same type.

2. The page of the blank work permit that has the section that needs extending is attached to the original work permit. Where possible, this attached page shall be stapled to the original work permit, or affixed in a secure way so that both permits are not separated.

3. The RIC / TIC shall write clearly on the attached page:

a) the switching program number of the original work permit

b) the ENMAC permit number, and

c) the original work permit’s book number.

4. The RIC / TIC shall write clearly on the filled section of the original work permit that there is an added page attached to that permit. The attached page’s permit book number should also be written on the original permit.

With cross-referenced notes on both the original work permit and the attached page, the RIC / TIC can proceed to record new information in the blank section.

7.6.9 Emergency situations

In emergency situations, compliance to the Networks Permit to Work procedures may be waived legitimately in an attempt to make the situation safe.

An emergency situation is defined for the purpose of this variation of procedure to be “a situation that presents an immediate threat to life or to property or the environment where that threat may also constitute an immediate threat to life.”

In every situation that is not deemed by definition to be an emergency, the Network Permit to Work procedures shall be complied with.

Note: Remember! Before accessing any electrical apparatus, every attempt shall be made to prove that electrical apparatus de-energised.

42



Procedural flowcharts 43


8 PROCEDURAL FLOWCHARTS

8.1 Basic Networks Permit to Work Procedure

2. RIC or TIC accepts

work permit

3. RIC explains work

permit to work party

4. Work party members sign

onto work permit

1. IO issues work

permit

5. Work commences under active work permit

6. RIC or TIC relinquishes

work permit

7. IO cancels

work permit

44 Procedural flowcharts


8.2 Issuing an Electrical Access Permit



8.3 Issuing / Relinquishing an Electrical Access Permit



8.4 Cancelling an Electrical Access Permit

32. IO – Cancels permit

33. IO – Registers

cancelled permit

with HPCC

37. HPCC –

Confirm circuit restored

35. HPCC – Carries out

restoration switching

36. SO – Carries out field

restoration switching

3

34. SO – Requests and gains

HPCC permission to restore

apparatus / network



8.5 Issuing / Relinquishing a Vicinity Authority



8.6 Issuing / Relinquishing a Sanction to Test



8.7 Variation – Remote issue of work permit

1.

HP

CC

/ S

O –

Perf

orm

s

sw

itchin

g a

s r

equired

2.

IO –

Pre

pare

s o

rigin

al perm

it

off-s

ite –

regis

ters

perm

it w

ith

HP

CC

–sig

ns p

erm

it

3.

IO –

Conta

cts

pro

xy

Issuin

g O

ffic

er

(on-s

ite R

IC)

usin

g a

udio

-vis

ual com

ms

11.

On-s

ite w

ork

perm

it

now

issued

to p

roxy

Issuin

g O

ffic

er

Yes

No

4.

IO –

Sends p

roxy

Issuin

g

Offic

er

image o

f origin

al perm

it –

pre

ferr

ed p

rocedure

9a.

IO –

Addre

sses c

oncern

s o

f

pro

xy

Issuin

g O

ffic

er

13.

On-s

ite w

ork

perm

it

now

active

5.

Pro

xy

IO –

Tra

nscribes

info

rmation f

rom

im

age

or

verb

al com

ms

onto

on-s

ite c

opy

of

perm

it

7.

Pro

xy

IO –

Conta

cts

Issuin

g

Offic

er

and r

eads b

ack

info

rmation o

n o

n-s

ite p

erm

it

8.

Pro

xy

IO /

Issuin

g O

ffic

er

–

Confirm

they

have r

ecord

ed

on e

ach p

erm

it:

•th

e s

witchin

g p

rogra

m n

o.

•th

e E

NM

AC

work

perm

it n

o.

•th

e B

ook N

o.

of

the o

n-s

ite

perm

it

12.

RIC

–S

igns o

n-s

ite

work

perm

it a

s R

IC

10.

Pro

xy

IO –

Sig

ns o

n-s

ite

work

perm

it o

n b

ehalf o

f IO

in Issuin

gsection o

f perm

it

6.

Pro

xy

IO –

Sends I

ssuin

g

Offic

er

image o

f tr

anscribed

perm

it –

pre

ferr

ed p

rocedure

9.

Does p

roxy

IO

accept

work

perm

it?



8.8 Variation – Remote relinquishment of work permit

1.

Work

is c

om

ple

ted

6.

IO –

Tra

nscribes o

n-s

ite w

ork

perm

it info

rmation

from

im

age o

r verb

al com

ms

onto

origin

al w

ork

perm

it

8.

IO –

Cancels

origin

al w

ork

perm

it

9.

On-s

ite w

ork

perm

it

and o

rigin

al w

ork

perm

it

now

cancelle

d

5.

Pro

xy

IO –

Conta

cts

Issuin

g

Offic

er

to c

onfirm

the o

n-s

ite

work

perm

it

is c

ancelle

d

7.

Pro

xy

IO /

Issuin

g O

ffic

er

–

Confirm

they

have a

ccura

tely

record

ed

relin

quis

hm

ent

and c

ancella

tion info

rmation

onto

origin

al w

ork

perm

it3.

Pro

xy

IO –

Cancels

on-s

ite w

ork

perm

it

on b

ehalf o

f Is

suin

g O

ffic

er

in C

ancella

tion s

ection

4.

Pro

xy

IO –

Sends I

ssuin

g

Offic

er

image o

f cancelle

d

on-s

ite w

ork

perm

it –

pre

ferr

ed p

rocedure

2.

RIC

–R

elin

quis

hes

work

perm

it iaw

sta

ndard

NP

TW

S p

rocedure



8.9 Variation – Multiple work parties within same isolated area

Yes

No

1.

Multip

le w

ork

part

ies t

o w

ork

in s

am

e isola

ted a

rea

8.

RIC

s o

f each w

ork

perm

it –

Com

munic

ate

s w

ith a

ll oth

er

RIC

s o

f oth

er

perm

its

in the s

am

e isola

ted a

rea

3.

All

work

part

ies s

hall

work

under

the s

am

e w

ork

perm

it

in the s

am

e isola

ted a

rea

2.

Will

the

work

part

ies

alw

ays

be a

ble

to s

ee

each o

ther

at

the

work

site?

4.

IO –

Deta

ils e

ach

work

part

y’s s

cope o

f

work

on t

he s

am

e

work

perm

it

5.

RIC

of

work

perm

it –

Record

s a

ll w

ork

ing

eart

hs o

n t

he s

am

e

work

perm

it

9.

All

work

part

ies c

an

com

mence w

ork

iaw

NP

TW

S p

rocedure

s

7.

IO –

Pre

pare

s s

epara

te

work

perm

its

for

each w

ork

part

y

within

the s

am

e

isola

ted a

rea

6.

RIC

of

work

perm

it –

Coord

inate

s a

ll w

ork

part

ies

regard

ing N

PT

WS

matters



8.10 Variation – Vicinity Authority and protection auto reclose disabled (VA to remain active)

Yes

1. RIC contacts HPCC and notifies them that the VA

has been signed off by the Recipients and work is

completed for the day

7. RIC explains VA conditions to the work

party

2. VA to remain active for the next day? 15. RIC relinquishes the

VA

8. RIC instructs work party to sign onto the VA

9. Work can recommence

No

16. IO cancels the VA and contacts HPCC to

notify of VA cancellation

3. HPCC cancels PoF VA, re-enables protection auto

reclose and leaves job open

4. RIC before work commences the next day,

contacts HPCC and provides PoF job number

5. HPCC opens PoF job, disables protection auto reclose, generates new

PoF VA number and provides number to the

RIC

6. RIC records new PoF VA number on VA

17. HPCC cancels PoF VA, re-enables protection auto reclose and closes

job



8.11 Variation – Change to the scope of work

Yes

No

1.

EA

P a

nd

ST

T

3.

Do

es

the w

ork

lo

cation

require a

change t

o

the s

cope o

f w

ork

on p

erm

it?

5.

Do

es

change t

o w

ork

require c

hange t

o

scope o

f w

ork

on p

erm

it?

2.

Work

requires

a c

hange in

lo

cation

4.

Is

changed

work

location

still

within

iso

late

d

are

a?

15.

Work

perm

it

can r

em

ain

active

8.

Vic

init

y A

uth

ori

ty

10.

Do

es

the w

ork

lo

cation

require a

change t

o

the s

cope o

f w

ork

on V

A?

12.

Do

es

change t

o w

ork

require c

hange t

o

scope o

f w

ork

on p

erm

it?

9.

Work

requires

a c

hange in

lo

cation

11.

Is

changed

work

location

still

within

pro

tection

zone?

14.

Ne

w V

A r

equired

to a

ccom

modate

change:

•of

work

lo

cation

•of

pro

tection z

one

•to

scope o

f w

ork

13.

VA

to b

e c

ancelle

d

7.

Ne

w w

ork

perm

it r

equired

to a

ccom

modate

change:

•of

work

lo

cation

•of

iso

late

d a

rea

•to

scope o

f w

ork

6.

Work

perm

it t

o b

e c

ancelle

d

No

Yes

Yes

No

Yes

No

Yes

No

Yes

No



8.12 Variation – Recipient leaving the worksite



8.13 Variation – Transfer of Recipient in Charge responsibilities



8.14 Variation – Absent Recipient – Sign off



8.15 Variation – Absent Recipient in Charge – Transfer



8.16 Variation – Extension to section of the work permit

1. Work permit requires more

information on filled

section of permit

7. RIC – New information

can be added to blank

section of attached page

2. RIC – Acquires new blank

work permit – uses single page

with blank section

4. RIC – Cross-references both

permit and attached page

5. RIC – On attached page, details

of original permit:

• the Switching program no.

• the ENMAC work permit no.

• the book no.

6. RIC – On original permit:

• note indicating a page is attached

• the book no. of attached page.

3. RIC – Staples or securely

affixes attached page to filled

section of original permit

59


APPENDIX A

Electrical Access Permit – Front

60 Appendix B


APPENDIX B

Electrical Access Permit – Back

Appendix C 61


APPENDIX C

Vicinity Authority – Front

62 Appendix D


APPENDIX D

Vicinity Authority – Back – Pending development

Appendix E 63


APPENDIX E

Access to Live Electrical Apparatus work permit – Pending development

64 Appendix F


APPENDIX F

Sanction to Test – Front

Appendix G 65


APPENDIX G

Sanction to Test – Back

66 Appendix G



67


REFERENCE PUBLICATIONS

1. Horizon Power. (2013). Electrical Safety Standards CS10 # 2305182

2. Horizon Power (2014). Field Instruction Manual. CS10 # 2224539

3. Horizon Power (2014) Transmission Substation Field Instruction Manual. CS10# 2353969

4. Horizon Power. Job Risk Assessment Procedure. CS10# 3104177

68 Reference Publications



69


GLOSSARY OF ABBREVIATIONS AND TERMINOLOGY

DNAR Distribution Network Access Request

DOF drop out fuse

EAP Electrical Access Permit

ENMAC Electrical Network Management and Control

ESS Electrical Safety Standards

FIM Field Instruction Manual

HPCC Horizon Power Control Centre

HV High voltage

IO Issuing Officer

LV low voltage

NPTWS Networks Permit to Work Standard

OSH occupational safety and health

PPC personal protective clothing

PPE personal protective equipment

RIC Recipient in Charge

SCADA Supervisory Control And Data Acquisition

SI secondary isolation

SO Switching Operator

STT Sanction to Test

TIC Tester in Charge

TSFIM Transmission Substation Field Instruction Manual

VA Vicinity Authority

XA21 Generation and Transmission Energy Management System

70 Glossary of Abbreviations and Terminology



71


INDEX

A

absent 43, 44

C

Caution – Vicinity Work in Progress tag 21, 22, 23, 24

D

Danger – Do Not Operate tag 21 Danger–Restricted Use tag 24, 25 dual roles 32

E

EAP 9, 14, 15, 16, 17, 20, 33, 40 earthing 7, 9, 14, 15, 16, 17 Electrical Access Permit 7, 16, 17, 18, 20, 40, 48, 49, 50,

63, 64

H

high voltage work 30 HPCC i, 12, 18, 22, 24, 31, 35, 37, 42, 44, 45

I

Issuing Officer 8, 11, 12, 15, 17, 19, 31, 33, 34, 36, 37, 43, 44

L

leaving the worksite 41, 57 low voltage work 30

M

multiple work parties 39, 40

P

point of isolation 26

R

Recipient 7, 9, 10, 11, 12, 14, 15, 23, 30, 31, 35, 41, 43, 44, 57, 59

Recipient in Charge 11, 12, 15, 31, 41, 42, 43, 44 responsibilities 3, 8, 11, 12, 30, 31, 41, 44 RIC 11, 12, 14, 15, 17, 20, 33, 34, 35, 36, 40, 41, 44

S

Sanction to Test 14, 16, 18 scope of work 11, 14, 16, 20, 31, 35, 36, 40, 41, 56 STT 14, 15, 16, 17, 18, 19, 20, 33, 40 Switching Operator 10, 11, 17, 28, 31, 32, 37 switching program 11, 20, 21, 22, 24, 36, 45

T

Tester in Charge 7, 10, 11, 12, 14, 15, 20, 31, 32, 33, 34, 41

TIC 11, 12, 14, 33, 34, 35, 36 transfer 8, 41, 42, 43, 44, 45

V

VA 9, 14, 16, 17, 18, 23, 40, 41 variations 3, 16, 37 Vicinity Authority 10, 16, 17, 18, 22, 23, 24, 40, 51, 65, 66 voltage 73

W

Warning – Out of Service tag 21

networks permit to work training manual - horizon power...networks permit to work training manual...

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