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Petroleum Development Oman L.L.C.

Electrical Safety Rules

UNRESTRICTED Document ID : SP-1104 (ERD-64-02)

Oct. 2004 Filing key : A-71

This document is the property of Petroleum Development Oman, LLC. Neither the

whole nor any part of this document may be disclosed to others or reproduced, stored

in a retrieval system, or transmitted in any form by any means (electronic, mechanical,

reprographic recording or otherwise) without prior written consent of the owner.


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Electrical Safety Rules Version 7.0

SP-1104 Page 1 of 3 06/10/2004

Authorised For Issue Oct. 2004

Signed : ..............................................

Saif Al-Sumry, TTE

Head, Infrastructure Power Systems Dept.

CFDH, Electrical Engineering

The following is a brief summary of the 4 most recent revisions to this document.

Details of all revisions prior to these are held on file by the issuing department.

Version

No.

Date Author Scope / Remarks

Version 4.0 Nov 92 BEB/4 Revised section 1,2,4,5,7 and added

App. G

Version 5.0 Dec 94 BEB/4 Complete re-arranged and revised

section 2

Version 6.0 May 97 BEB/4 Revised section 0,2,5,6,7,10, App Aand added App G.

Version 7.0 Feb 00 OIE/3 Converted to Specification as per PDO

Policy Cascade

Version 8.0 Oct 04 TTE/3 Minor changes


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Version 7.0 Electrical Safety Rules

06/10/2004 Page 2 of 3 SP-1104

Contents

1. Introduction

2. Glossary

2.1 ELECTRICAL DEFINITIONS

2.2 OTHER DEFINITIONS

2.3 PDO AREAS

2.4 ABBREVIATIONS

2.5 PDO GENERIC JOB TITLES & REFERENCE INDICATORS

3. General Requirements

3.1 DUTY

3.2 OBJECTIONS

3.3 ISSUE OF ELECTRICAL SAFETY RULES

3.4 DANGEROUS OCCURRENCES AND ACCIDENTS

3.5 FAILURE OF SUPPLY

3.6 ADMITTANCE TO STATIONS

4. Authorisation of Electrical Persons and Appointed Persons

4.1 GENERAL

4.2 APPOINTMENT

4.3 CERTIFICATE OF APPOINTMENT

5. Procedures for Initiation of Work

5.1 ACCESS

5.2 SWITCHING PROCEDURES

5.3 PRECAUTIONS TO BE TAKEN BEFORE WORKING ON OR TESTING

HIGH VOLTAGE APPARATUS5.4 PRECAUTIONS TO BE TAKEN BEFORE WORKING ON OR TESTING

LOW VOLTAGE APPARATUS

5.5 EARTHING

5.6 APPROACH TO EXPOSED LIVE HIGH VOLTAGE CONDUCTORS ORINSULATORS SUPPORTING THEM

5.7 TESTING OF HIGH VOLTAGE APPARATUS BEFORE IT ISCONNECTED TO AN ELECTRICAL SYSTEM

6. Issue And Control Of Electrical Safety Documents

6.1 INITIATION OF DOCUMENTS

6.2 PROCEDURE FOR ISSUE AND RECEIPT

6.3 PRECAUTIONS DURING PROGRESS OF WORK

6.4 PROCEDURE FOR CLEARANCE AND CANCELLATION

7. Precautions to be Taken on Specific Items of Apparatus

7.1 WORK ON OVERHEAD LINES

7.2 WORK ON UNDERGROUND CABLES

7.3 WORK ON HIGH VOLTAGE TRANSFORMERS

7.4 WORK ON HIGH VOLTAGE SWITCHGEAR


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7.5 WORK IN SUBSTATIONS WITH EXPOSED HIGH VOLTAGECONDUCTORS

7.6 WORK ON REMOTELY OR AUTOMATICALLY CONTROLLED HVAPPARATUS

7.7 WORK AND TESTING ON HV MOTOR CIRCUITS (includes HV circuitswith an LV motor, eg. beam pump circuits)

7.8 WORK ON LOW VOLTAGE SWITCHBOARDS

7.9 WORK ON HIGH VOLTAGE STATIC CAPACITORS

7.10 SWITCHING, WORKING OR TESTING IN HAZARDOUS AREAS.

8. Live Line Working

8.1 GENERAL

8.2 LIVE LINE TOOLS AND EQUIPMENT

8.3 SAFETY PRECAUTIONS

9. Live Line Washing

9.1 GENERAL

9.2 LIVE LINE WASHING EQUIPMENT


10. USE OF APPOINTED PERSONS

10.1 GENERAL

10.2 SWITCHING DUTIES

10.3 APPOINTMENT

APPENDICES

APPENDIXA -APPROVEDDEVICESORMETHODSSANCTIONEDFORUSEINPDOAPPENDIXB -ELECTRICALPERMITTOWORKAPPENDIXC -SANCTIONFORTESTAPPENDIXD -LIMITATIONOFACCESSAPPENDIXE1 -ELECTRICALISOLATION/DE-ISOLATIONCERTIFICATEAPPENDIXE2 -ELECTRICALISOLATION/DE-ISOLATIONCERTIFICATE ALLOWING

RESTORATIONOFMOTIVEPOWERFORONLOADCHECKSTOBEMADEAPPENDIXE3 -ELECTRICALIMMOBILISATION/MOBILISATIONCERTIFICATEAPPENDIXF -WORKINGANDACCESSCLEARANCEAPPENDIXG -CERTIFICATEOFAPPOINTMENTSPUSER-COMMENTFORM


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1. Introduction

These Electrical Safety Rules are intended for the use of such employees of

PDO and its contractors who may be concerned with the operation of, or

work on, PDO HIGH VOLTAGE and associated LOW VOLTAGE electrical

systems. of the Company. The Rules are additional to the generally applicable

safety requirements of the Company, specifically the Permit-to-Work System(SRD/P/06) as operated by the Company, together with the PDO HSE

Manual.

The application of these Rules is mandatory.

The authority for revision of these Rules rests with the Corporate Functional

Discipline Head Electrical.

All copies of these Rules shall be issued in accordance with ESOP 1.

The Rules shall not apply to three & single phase LOW VOLTAGE

APPARATUS inside workshops, laboratories, commercial, domestic and

similar buildings or to portable electric tools, all of which are not considered

to be part of PDO's electrical systems which come within the scope of theseRules.

The Rules shall not be applied to batteries for all purposes, instrument or

telecommunication circuits operating at up to 110 volts DC and AC, nor to

radio frequency, or low energy high voltages as found in cathode ray tubes,

radar, air-conditioning systems/plants and cathodic protection systems.

However the principles of the safe working methods contained in subsection

5.4 of these Rules shall be followed, where practicable, when working on any

LOW VOLTAGE circuits within the PDO concessions.

ELECTRICAL SAFETY OPERATIONAL PROCEDURES SP 1108

(ESOP) are issued by the Corporate Functional Discipline Head Electrical tosupplement these Rules and to define policies that assist in their

implementation.

All copies of these PROCEDURES shall be issued in accordance with ESOP

1.

The ESRs forbid unauthorised staff to execute any electrical

operational activity

It is however acceptable that:-

1. Unauthorised contractor staff carry out job-related-tasks, forwhich no electrical authorisation is required, whilst under the

direct supervision of authorised staff.

2. Contractor's equipment is used to execute the job.

Such equipment shall comply with the appropriate PDO HSE

regulations.


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2. Glossary

2.1 ELECTRICAL DEFINITIONS

For the purpose of these Electrical Safety Rules, the following definitions

shall apply and where used shall be printed in capital letters. The definitionshave been grouped into categories dealing with specific aspects of electrical

safety.

2.1.1 General Terminology

HIGH VOLTAGE (HV) APPARATUS

Any apparatus, equipment and conductors which are normally operated at a

voltage exceeding 1000V AC.

LOW VOLTAGE (LV) APPARATUS

Any apparatus, equipment and conductors which are not EXTRA LOWVOLTAGE APPARATUS and which normally operate at a voltage not

exceeding 1000V AC.

EXTRA LOW VOLTAGE (ELV) APPARATUS

Any apparatus, equipment and conductors which are normally operated at a

voltage not exceeding 50V AC.

APPROVED

Of a type or method sanctioned for use within PDO.

(See Appendix A for method, device, reference document or stock reference).

DANGER

A risk of bodily injury or loss of life or health from shock, burn, asphyxiation

or other causes.

DEAD

At or about zero potential and disconnected from any LIVE system.

LIVE

Electrically charged.


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EARTH, EARTHED or EARTHING

Connecting to or connected to the general mass of earth in such a manner as

will ensure at all times that the body being earthed discharges immediately any

electrical energy stored in it and furthermore is maintained at a safe potential

with respect to the general mass of earth.

When applied to conductors: all phases short circuited and effectively

connected to earth either through switchgear with adequately rated

EARTHING capacity or by APPROVED portable EARTHING leads or by

any other APPROVED devices.

ISOLATED OR ISOLATION

Disconnected from LIVE APPARATUS and conductors by an open

disconnector or by an adequate physical gap.

SWITCHING

The operation of circuit breakers, isolators, disconnectors, fuses or other

methods of making or breaking an electrical circuit and/or the application and

removal of CIRCUIT MAIN EARTHS and LV EARTHS.

SAFETY DISTANCE

The distance from the nearest LIVE HIGH VOLTAGE exposed conductor or

from an insulator supporting a HIGH VOLTAGE conductor which shall be

maintained to avoid DANGER.

LIVE LINE WORK

Work on LIVE HIGH VOLTAGE overhead exposed conductors and other

APPARATUS using APPROVED insulated tools and methods.

LIVE LINE WASHING

Washing of LIVE HIGH VOLTAGE insulators on overhead lines and

substations with exposed conductors using APPROVED equipment and

methods.

WORKING PARTY

The persons under the direct supervision of a COMPETENT ELECTRICAL

PERSON or an AUTHORISED ELECTRICAL PERSON.


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WORK IN A CONFINED SPACE

Work in an enclosed area where there is a possibility of concentrations of

toxic, flammable or hazardous gases or where the oxygen content of the

atmosphere could be reduced below 20% by volume.

2.1.2 Documentation, Permits, Notices & Procedures

ELECTRICAL SAFETY OPERATIONAL PROCEDURES

Instructions that are issued by the CFDH-E to supplement these Rules and to

define policies that assist in their implementation.

i) ELECTRICAL SAFETY DOCUMENTS,

ii) ELECTRICAL PERMIT-TO-WORK, SANCTIONS-FOR-TEST,LIMITATIONS-OF-ACCESS and

iii) ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATES

are all ELECTRICAL SAFETY DOCUMENTS.

ELECTRICAL PERMIT-TO-WORK (EPTW)

A form of declaration signed and issued by an AUTHORISED

ELECTRICAL PERSON to a COMPETENT ELECTRICAL PERSON in

charge of work to be carried out on any APPARATUS, for the purpose of

making known to such person exactly what HIGH VOLTAGE APPARATUS

is DEAD, ISOLATED from all LIVE conductors, has been discharged,

connected to EARTH and on which it is safe to work. (see Appendix B).

An ELECTRICAL PERMIT-TO-WORK shall also be issued to a person incharge of work on LOW VOLTAGE APPARATUS when either it is

necessary to:-

a) apply a CIRCUIT MAIN EARTH to the HIGH VOLTAGE side of a

transformer feeding the LOW VOLTAGE APPARATUS

or

b) apply an LV EARTH to the busbars of a LOW VOLTAGE

switchboard.

ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE

A form of instruction signed and issued by a responsible member of a

Custodian Department to a suitably authorised ELECTRICAL PERSON to

ensure the safe ISOLATION of electrical circuits prior to non-electrical work

by a third party. (See Appendix E-1).


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ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE

(allowing restoration of motive power for on-load checks to be made)


Custodian Department to a suitably authorised ELECTRICAL PERSON to

ensure the safe ISOLATION of electrical circuits prior to non-electrical work

and on-load checks by a third party.

This CERTIFICATE shall allow the restoration of motive power, under the

direct supervision of an ELECTRICAL PERSON, for on-load checks to be

made by the third party. (See Appendix E-2).

ELECTRICAL IMMOBILISATION/MOBILISATION CERTIFICATE


Custodian Department to a suitably authorised APPOINTED PERSON to

ensure the safe immobilisation of selected LV electrical motor circuits prior to

non-electrical work by a third party. (See Appendix E-3).

LIMITATION-OF-ACCESS (LOA)

A form issued and canceled by an AUTHORISED ELECTRICAL PERSON

to a COMPETENT ELECTRICAL PERSON defining the limits and nature of

work which will be carried out in the vicinity of LIVE APPARATUS. A

LIMITATION-OF-ACCESS shall be issued when an ELECTRICAL

PERMIT-TO-WORK or SANCTION-FOR-TEST is not applicable and when

verbal instructions are not considered sufficient. (see Appendix D).

A LIMITATION-OF-ACCESS shall also be issued to a person in charge of

work on LIVE HIGH VOLTAGE conductors or insulators supporting LIVEHIGH VOLTAGE conductors when LIVE LINE WORKING or LIVE LINE

WASHING procedures are to be used.

SANCTION-FOR-TEST (SFT)

A form of declaration signed and issued by a SENIOR AUTHORISED

ELECTRICAL PERSON to an AUTHORISED ELECTRICAL PERSON

(with additional authority) in charge of testing HIGH VOLTAGE

APPARATUS for the purpose of making known to such person exactly what

APPARATUS is to be tested and the condition under which testing is to be

performed. (see Appendix C).

WORK PERMIT

(The class A or B Permit-to-Work)

A form of declaration signed and issued by the custodian of equipment or

plant to the person in charge (Permit Holder) of a working party, giving

clearance to work on the specified equipment or plant, detailing restrictions


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SP-1104 ESR 2 - Page 5 of 11 06/10/2004

and precautions required to carry out the specified work safely. The permit

shall state which other certificates or permits are required prior to starting

work (eg. , ELECTRICAL PERMIT-TO-WORK).

EXCAVATION CERTIFICATE

A form of declaration endorsed by all relevant service departments and issued

under the Permit-to-Work system to ensure that all underground services and

power cables are identified and safe methods of excavation are followed.

SWITCHING PROGRAMME

An APPROVED schedule which lists in sequence the SWITCHING

operations necessary to achieve a defined purpose on the system.

This schedule may include ISOLATION and EARTHING of HIGH

VOLTAGE APPARATUS to make it safe prior to the issue of an

ELECTRICAL PERMIT-TO-WORK or SANCTION-FOR-TEST.

SWITCHEAR OPERATING PROCEDURES

An APPROVED procedure detailing how to operate switchgear and how to

make it safe to work on.

PROCEDURES FOR APPOINTED PERSONS

An APPROVED procedure describing activities which can be carried out by

an APPOINTED PERSON.

CAUTION NOTICE

A notice in an APPROVED form attached to electrical APPARATUS or its

controls conveying a warning against interference with such APPARATUS.

These notices shall be attached to all points of ISOLATION from which

APPARATUS can be made LIVE.

DANGER NOTICE

A notice in an APPROVED form reading 'DANGER' with any additional

wording calling attention to the DANGER of approaching or interfering with

such LIVE APPARATUS.

EARTHED NOTICE

A notice in an APPROVED form reading 'EARTHED' that shall be used to

identify APPARATUS that has been used to apply a CIRCUIT MAIN

EARTH to a circuit.


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CERTIFICATE OF APPOINTMENT

A form of identification issued by the CFDH-E to appoint PDO (and non-

PDO) staff to a level of electrical authorisation. (see Appendix G)

2.1.3 Safety Equipment

CIRCUIT MAIN EARTH

An earth applied by an AUTHORISED ELECTRICAL PERSON prior to

issue of an ELECTRICAL PERMIT-TO-WORK or SANCTION-FOR-

TEST. When portable EARTHING leads are used for this purpose, an

APPROVED label shall be attached with the legend 'CME'.

ADDITIONAL EARTH

An earth of APPROVED type which is applied after the issue of an

ELECTRICAL PERMIT-TO-WORK or SANCTION-FOR-TEST (forexample an EARTH applied at a point of work).

These shall be attached or removed by (as a minimum) a COMPETENT

ELECTRICAL PERSON holding the ELECTRICAL PERMIT-TO-WORK.

When portable EARTHING leads are used for this purpose, an APPROVED

label shall be attached with the legend 'AE'.

LV EARTH

An earth of an APPROVED design that may be used on LOW VOLTAGE

APPARATUS when it is worked on under an ELECTRICAL PERMIT-TO-

WORK.

KEY SAFE

An APPROVED device for the secure retention of all SAFETY PADLOCK

keys used to lock means of ISOLATION, EARTHING or other safety

devices in accordance with these Rules.

SAFETY PADLOCKS

Locks of an APPROVED type with a unique key, that shall be used to lock

switches, etc, at points of ISOLATION where the APPARATUS beingworked on could be made LIVE in error. Only one key shall be supplied for

each lock.

STANDARD ELECTRICAL PADLOCKS


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Locks of an APPROVED standard type fitted to prevent access by

unauthorised persons to power stations, substations or electrical

APPARATUS not subject to an ELECTRICAL SAFETY DOCUMENT.

This type of lock shall fit the electrical master key system.


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2.1.4 Persons

2.1.4.1 Electrical Person

A person (PDO or non-PDO) who has been appointed by the CFDH-E to any

of the electrical authorisation levels defined below in Rules 2.1.4.2/3/4/5/6.

ELECTRICAL PERSONS shall be subject to the licensing requirements of

the Permit-to-Work system as operated by PDO.

2.1.4.2 Competent Electrical Person (PDO Staff)

A person who has sufficient technical knowledge or experience to avoid

DANGER and has been appointed by the CFDH-E to receive and complete

ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATES and receive

ELECTRICAL PERMITS-TO-WORK and LIMITATIONS-OF-ACCESS.

This person may carry out LV SWITCHING, but only on single circuits with

no possibilities of backfeeds.

The CERTIFICATE OF APPOINTMENT shall state the section of theelectrical system to which it applies.

2.1.4.3 Competent Electrical Switching Person (PDO Staff)

A COMPETENT ELECTRICAL PERSON who has been appointed in

writing by the CFDH-E to carry out LV SWITCHING, including LV

switchboards with possible backfeeds from main incomers or bus couplers,

but excluding LV switchboards with incomers from the HV system.

The CERTIFICATE OF APPOINTMENT shall state the section of the

electrical system to which it applies.

2.1.4.4 Authorised Electrical Person (PDO Staff)

A COMPETENT ELECTRICAL SWITCHING PERSON who has been

appointed in writing by the CFDH-E to carry out HV and LV SWITCHING.

The appointment may also include the additional authority (AEP+) for the

issue and cancellation of ELECTRICAL PERMITS-TO-WORK and

LIMITATIONS-OF-ACCESS, and to receive SANCTIONS-FOR-TEST.

The CERTIFICATE OF APPOINTMENT shall state if it includes the above

additional authority (AEP+) and the section of the electrical system to which

it applies.

2.1.4.5 Senior Authorised Electrical Person (PDO Staff)An AUTHORISED ELECTRICAL PERSON who has been appointed in

writing by the CFDH-E to carry out HV and LV SWITCHING, the issue and

cancellation of ELECTRICAL PERMITS-TO-WORK, SANCTIONS-FOR-

TEST and LIMITATIONS-OF-ACCESS.


electrical system to which it applies.


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It may also include carrying out the duties of a CONTROL PERSON for a

specified section of the electrical system.

2.1.4.6 Control Person (PDO Staff)

A SENIOR AUTHORISED ELECTRICAL PERSON who has been

appointed in writing by the CFDH-E to manage a section of the electricalsystem within defined electrical boundaries.

The position of CONTROL PERSON can be either of the following:

a) The person operating from a control room specially equipped with system

control facilities (particularly applicable to the operation of

powerstations)

or

b) The most senior ELECTRICAL PERSON in a PDO Area (particularly

applicable to Area Operations Electrical Supervisor positions)

or

c) Heads of Utility


electrical system for which the appointment applies.

2.1.4.7 Non-PDO Staff Electrical Persons

It shall be possible for contract staff to be authorised for any of the

authorisation levels as defined in Rules 2.1.4.2/3/4/5/6.

The contractor shall nominate such staff in writing to PDO as having

sufficient technical knowledge or experience, commensurate with the level of

authorisation requested, to carry out the duties as defined in Rules

2.1.4.2/3/4/5/6 (whichever is applicable) in a safe and responsible manner.

The CERTIFICATE OF APPOINTMENT shall state that the authorisation

shall only be valid for the purposes of commissioning and/or maintenance of

APPARATUS and associated SWITCHING on PDO electrical systems as

defined in the contract scope of work or within the EPC contract area.

2.1.4.8 Appointed Person (PDO And Non-PDO Staff)

A person nominated by a PDO production unit or facility and appointed in

writing by the CFDH-E to carry out specified activities, which may include

limited SWITCHING in his unit.

The CERTIFICATE OF APPOINTMENT shall state the activities and any

limited items of SWITCHING this person may carry out.


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2.2 OTHER DEFINITIONS

Note:See also subsections 2.3, 2.4 and 2.5

(The) Company Petroleum Development Oman LLC of Muscat, Sultanate of

OmanConsultant A party to a Contract with The Company who is responsible for

providing design, engineering, and other related consultancy

services under a Contract.

Contractor A party to a Contract with The Company responsible for

maintenance, construction and other related works specified in

a Contract. On occasion, for example in 'turnkey or EPC

contracts', a contractor may be responsible for the duties of

both Consultant and Contractor.

Direct

Supervision

Supervision by a person suitably authorised for that function,

who is continuously present at the work site to personally

supervise the work without intermediaries.

May The word 'may' is to be understood as indicating a possible

course of action.

Shall The word 'shall' is to be understood as mandatory.

Should The word 'should' is to be understood as strongly

recommended.

User A specified engineer or Consultant who applies these standards

in the execution of a PDO project.

2.3 PDO AREAS

The following (operational) Areas currently exist in PDO, with electrical staff

in place:

Coastal Areas: Mina Al Fahal

Northern Areas: Lekhwair (L)

Yibal (Y), including Al-Huwaisah

Fahud (F), including Natih, Nahada

Qarn Alam (Q), including Saih Nihayda, Saih Rawl,

Barik

Southern Areas: Marmul (M), including Birba

Nimr (N), including Amal, Runib

Rima (R) and Bahja (B), including Sayyala, Suwaihat,

Anzauz, Hubara


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Note: APPROVED Interface procedures between PDO operational areas and

third party distribution systems or points of supply i.e. MEW, ROP, MOD can

be found in ESOP 9.


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2.4 ABBREVIATIONS

AP Appointed Person

CEP Competent Electrical Person

CESP Competent Electrical Switching Person

AEP Authorised Electrical Person

AEP(+) AEP with additional authorities

SAEP Senior Authorised Electrical Person

CP Control Person

CFDH-E Corporate Functional Discipline Head Electrical

CofA Certificate of Appointment

ESB Electrical Safety Bulletin

ESOP Electrical Safety Operational Procedure

ESR Electrical Safety Rules

SOP Switchgear Operating Procedures

SRD Safety Reference Document

AE Additional Earth

CME Circuit Main Earth

HV High Voltage

LV Low Voltage

ELV Extra Low Voltage

LLW Live Line Work

LL Washing Live Line Washing

EPC Engineer, Procure & Construct contract

IEC International Electrical Committee

PDO Petroleum Development Oman LLC


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2.5 PDO GENERIC JOB TITLES & REFERENCE INDICATORS

For the purpose of this document the following generic job titles are defined,

along with the current reference indicator(s).

PDO GENERIC JOB TITLE REFERENCE INDICATOR

Corporate Functional Discipline

Head Electrical

TTE

Head of Power system

operations & Maintenance

TTE / 3,

Head of Production Flow Asset

Team

ONO, OSO, and HES/1

Area Head of Production Flow

Asset Team

ONO/1F, ONO/1L, ONO/1,

ONO/1Q, OSO/1B, OSO/1N,

OSO/1M and HES/1.Area Electrical Supervisor ONO/12F, ONO/12L, ONO/12,

ONO/12Q,OSO/12B,ONO/12N,

OSO/12M and HES/12

Area Electrical Staff Staff reporting to an Area Electrical

Supervisor

Area Estate Services ONO/16F, ONO/16L, ONO/16Y,

ONO/16Q,OSO/16B,OSO/16,

OSO/16M and HES/12.


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3. General Requirements

3.1 DUTY

It is the duty of all persons, including contractors and sub-contractors

employed by PDO, who work on the electrical systems within PDO areas, tomake themselves thoroughly conversant with and to conduct their work in

accordance with all Rules governing the operation or work they have to

undertake on such systems.

Furthermore, it is the duty of these persons to use any means or appliance

provided by PDO for securing safety and also not willfully to do anything

likely to endanger themselves or others.

Contravention of these Rules shall constitute misconduct. Any person

(whether PDO or non-PDO staff) who contravenes these Rules shall be

liable to dismissal or be otherwise dealt with in accordance with Personnel

Disciplinary procedures.

3.2 OBJECTIONS

Any person objecting on operational or safety grounds to any instructions

given to him regarding the operation of HV or LV APPARATUS or work on

electrical equipment shall make these objections clearly known to the person

issuing them.

This person shall then have the matter investigated and if necessary referred to

a higher authority for a decision before proceeding.

3.3 ISSUE OF ELECTRICAL SAFETY RULES

A copy of these Rules shall be issued to PDO employees and to employees of

PDO contractors and sub-contractors, involved in the operation of or work

on PDO electrical systems. Each employee shall sign a receipt for their copy

which shall be kept in good condition. The method of issue shall be in

accordance with ESOP 1.

3.4 DANGEROUS OCCURRENCES AND ACCIDENTS

All dangerous occurrences and electrical accidents shall be reported

immediately to a CP who shall report in accordance with an APPROVED

procedure.

3.5 FAILURE OF SUPPLY

A failure of supply, from whatever cause, to or from any part of the HV

systems shall be reported immediately to the CP for the section affected.

The CP shall report any serious interruption involving a large part of the

facilities or an important single consumer in accordance with procedure PR


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1354 ( Follow- up procedure for Electrical Faults and Equipment Failure

PR -1354 ).

During failure of supply, all APPARATUS, conductors and equipment shall

be considered LIVE, until ISOLATED and proved DEAD.

3.6 ADMITTANCE TO STATIONS

No person shall, without authority, enter any power station or substation

premises belonging to or under the control of PDO. All such stations shall be

kept secured with STANDARD ELECTRICAL LOCKS when unattended.


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4. Authorisation of Electrical Persons and AppointedPersons

4.1 GENERAL

The authorisation of staff to SAEP, AEP(+), AEP, CESP, CEP, CP and APoperating and working under the scope of these Rules shall follow the

definitions given in Rule 2.1.4.

4.2 APPOINTMENT

The method of training, assessing and subsequent appointing of such

PERSONS is detailed in ESOP 3.

4.3 CERTIFICATE OF APPOINTMENT

4.3.1 A CofA shall be given to all ELECTRICAL PERSONS and to allAPPOINTED PERSONS.

The CofA shall state the main activities these persons may carry out on PDO

electrical systems, and the PDO Area to which it applies.

4.3.2 Another CofA shall be given to SAEP's who are to undertake the role of CP

for a section of the electrical system within defined electrical boundaries in a

specific PDO Area.


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5. Procedures for Initiation of Work

5.1 ACCESS

5.1.1 Access To High Voltage Enclosures And Apparatus

Barriers (including plates on access ladders) restricting access to enclosures

or cubicles containing LIVE HV conductors shall normally be kept locked.

No person except an AEP or a person acting under his direct supervion shall

have access to any such enclosure or cubicle in which a LIVE conductor is

exposed.

All spout or busbar shutters shall be locked shut. In case of possible backfeed

also the feeder shutters shall be locked shut. If the design of switch gear does

not have this locking facility, other precautions to prevent DANGER shall be

taken (e.g. padlocking of cubicle doors).

NOTE: Possible backfeed exists in case of ring circuit and multiple radial

feeders!

5.1.2 Access to Underground Chambers or Cellars

In accordance with PDO policy a WORK PERMIT is always required for

WORK IN A CONFINED SPACE. No person shall therefore enter any

underground chamber or cellar until the requirements of the Permit-to-Work

System for entry into a CONFINED SPACE have been implemented.

5.1.3 Climbing of Towers and Gantries

Gates and devices to prevent climbing of towers and gantries supporting HV

conductors shall always be kept locked except when opened by an AEP under

an ELECTRICAL PERMIT-TO-WORK, SANCTION-FOR-TEST orLIMITATION-OF-ACCESS.

5.1.4 Climbing on Wood Poles

Before any pole is climbed, it shall be sounded. No pole badly impaired by

decay or damage shall be climbed until the person in charge is satisfied that it

has been made safe.

No person shall work upon any pole or tower without making proper use of

his APPROVED safety harness, which he shall examine to see that it is in

good order, on each occasion before use.

No person shall climb any pole supporting LIVE HV conductors except inaccordance with Rule 7.1.4.


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5.2 SWITCHING PROCEDURES

5.2.1 General

5.2.1.1 No HV SWITCHING shall be carried out without the agreement of the CP

responsible for that section of the electrical system.

5.2.1.2 In normal circumstances all HV SWITCHING shall be carried out only after a

written APPROVED SWITCHING PROGRAMME has been agreed.

SWITCHING PROGRAMMES need not normally be prepared for

SWITCHING on HV motor circuits unless required by the CP.

5.2.1.3 When the CP gives agreement for HV SWITCHING to be carried out he

shall, if practicable, communicate directly with the person who is to carry out

the SWITCHING.

SWITCHING to the CP's instructions, or with his consent, shall be carried

out without undue delay.

All HV SWITCHING shall be reported to the CP as soon as possible after

each operation or at an agreed stage of a SWITCHING PROGRAMME.

5.2.1.4 The remote opening and closing of HV circuit breakers may be carried out by

unaccompanied suitably authorised operators.

All other HV SWITCHING shall be carried out by an AEP who shall be

accompanied during the SWITCHING operations. (See also Rule 5.5.2.2

when applying CIRCUIT MAIN EARTHS).

5.2.1.5 When operating pole mounted switchgear by mechanical means from ground

level, the operator shall wear rubber gloves of an APPROVED type and an

APPROVED safety helmet.5.2.1.6 Making LIVE or DEAD by signal or prearranged understanding after an

agreed time interval is forbidden.

5.2.1.7 When switchgear or any other HV APPARATUS shows any sign of distress,

its condition shall be reported immediately to the CP and it shall be examined

before a decision is made about further operation.

5.2.2 Switching Across Electrical Boundaries

Before SWITCHING is carried out on any system which may affect other

electrical systems, the CP agreeing the SWITCHING, shall communicate with

the CP of the other system(s) concerned and the SWITCHING shall be

recorded by all parties.

When telephone or radio messages are being used between CP's to co-

ordinate SWITCHING PROGRAMMES between different specified sections

of electrical systems, each message shall be repeated in full and written down

before SWITCHING is performed and each actual operation shall be reported

to the CP at the other end before the next operation can be executed.


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5.2.3 Switching Under Emergency Conditions

In all cases when emergency SWITCHING has been carried out to avoid

DANGER to persons or APPARATUS, the CP for the electrical system

concerned shall be informed as soon as possible of any action taken. The CP

shall report in accordance with an APPROVED procedure.

5.3 PRECAUTIONS TO BE TAKEN BEFORE WORKING ON OR

TESTING HIGH VOLTAGE APPARATUS

No person shall undertake any repairs, maintenance, alterations, cleaning or

testing on HV APPARATUS until such parts of that APPARATUS are:-

(a) Switched off from all points of supply, made DEAD and proven DEAD

by checking each phase of the circuit in an approved manner (refer

ESOP 5).

(b) ISOLATED and all steps taken to secure with SAFETY PADLOCKS

from all points of supply, including where practicable voltage andauxiliary transformers, common neutral equipment and any other source

from which the APPARATUS and conductors may become LIVE and

CAUTION NOTICES attached at all points of ISOLATION. The keys

for the SAFETY PADLOCKS shall be placed in a KEY SAFE or

another APPROVED security method shall be used.

(c) Connected to EARTH at all points of disconnection from HV supplies

to such APPARATUS or between such points and the points of work

or testing.

(d) Screened where necessary to prevent DANGER and DANGER

NOTICES attached.

(e) Released for work by the issue of an ELECTRICAL PERMIT-TO-

WORK to a CEP who shall be accompanied by another CEP during the

progress of the work.

or

(f) Released for testing by the issue of a SANCTION-FOR-TEST to an

AEP who shall be accompanied by another AEP or CEP during the

progress of the testing.

If an HV testing supply is to be used then Rule 5.7.2 shall also apply.

and

(g) The person receiving the ELECTRICAL PERMIT-TO-WORK or

SANCTION-FOR-TEST is made fully aware of the nature and extent

of the work or testing to be done.

It is the duty of the person issuing the ELECTRICAL PERMIT-TO-WORK

or SANCTION-FOR-TEST to ensure that these provisions are complied

with.


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Any work on LIVE HV conductors or insulators shall be carried out

under the LIVE LINE WORKING Rules in Section 8.0 or LIVE LINE

WASHING Rules in Section 9.0.


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5.4 PRECAUTIONS TO BE TAKEN BEFORE WORKING ON ORTESTING LOW VOLTAGE APPARATUS

5.4.1 No person shall carry out any repairs, maintenance, alterations or cleaning on

LV APPARATUS until such parts of that APPARATUS are:-

(a) Switched off from all possible points of supply and made DEAD.

(b) ISOLATED from all possible points of supply. The ISOLATION shall

normally be carried out by opening circuit breakers/switches and by

removing fuses or links.

The operating handles of these circuit breakers/switches shall have

been, where practicable, locked in the 'open' position with SAFETY

PADLOCKS or similar type locking devices and CAUTION NOTICES

attached at all points of ISOLATION. (see NOTE).

(c) Screened where necessary to prevent DANGER, and DANGER

NOTICES attached to draw attention to LIVE APPARATUS near tothe point of work.

(d) Proved DEAD with an APPROVED voltage testing device suitable for

the rated voltage of the circuit. The voltage testing device shall be

checked before and after use to check it is working correctly.

(e) EARTHED, where necessary, by an AEP, with LV EARTHS that have

been applied in accordance with Rule 5.5.3 to ISOLATED LV

conductors.

(f) Released for work to the CEP when the above precautions are

complete.

and

(g) The CEP who is to be in charge of the work, is made fully aware of the

nature and extent of the work to be done, and understands the

precautions that he and his WORKING PARTY shall take to avoid

DANGER from LIVE APPARATUS.

NOTE:If the APPARATUS at the point of ISOLATION is not provided with

suitable means of locking or if SAFETY PADLOCKS cannot be

applied, and the circuit cannot be ISOLATED by the withdrawal of

fuses or links, then other suitable precautions shall be taken to

avoid DANGER to person whilst working on the circuit.

5.4.2 An ELECTRICAL PERMIT-TO-WORK shall be issued to the CEP in charge

of the work on LV APPARATUS and conductors when it has been necessary

to apply a CIRCUIT MAIN EARTH to the ISOLATED HV windings of the

transformer feeding the LV windings and connections (including incoming

switchboard units) or when an LV EARTH is applied to the LV switchboard

busbars.


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When such an ELECTRICAL PERMIT-TO-WORK is issued to a CEP, he

shall be accompanied by another CEP during the progress of the work.

5.4.3 Notwithstanding the requirements of Rule 5.4.1, essential testing or

adjustments may be made with LV APPARATUS LIVE, provided that safe

methods are used and APPROVED equipment or instruments required for

testing are properly insulated for the rated voltage of the circuit.

If it is necessary for safety reasons, the CEP carrying out testing or

adjustments shall wear APPROVED electrical rubber gloves.

If the testing or adjustments of LV APPARATUS requires covers to be

removed so that LIVE terminals, windings or connections are exposed, then

suitable precautions shall be taken to prevent persons coming into accidental

contact or interfering with that APPARATUS.

The CEP in charge of the testing or adjustments shall be accompanied during

the progress of the testing or adjustments.

5.5 EARTHING

5.5.1 General

No HV EARTHING switch shall be operated or CIRCUIT MAIN EARTH

connected or removed except with the agreement of the CP.

5.5.2 High Voltage Earthing

5.5.2.1 All phases of the HV APPARATUS shall be tested with an APPROVED

voltage testing device to ensure that they are DEAD.

For HV APPARATUS, EARTHING switches shall be used where provided.

Where EARTHING switches are not provided, then other APPROVED

means of EARTHING shall be adopted including:-

(a) A circuit breaker be used to make the EARTH connection. The circuit

breaker shall normally have its trip feature made inoperative before

closing to EARTH, unless this is not practicable, when it shall be done

afterwards. After closing, the circuit breaker shall be locked in the

EARTH position. An EARTHED NOTICE shall be attached on the

circuit breaker when it is in the EARTH position.

or

(b) Applying APPROVED portable EARTHING leads by an insulating

pole or other APPROVED equipment to all phase conductors.

If this method of using portable EARTHING leads is to be used, the

following sequence of procedures shall be carried.out:-

(i) Check that the circuit to be EARTHED is ISOLATED.

(ii) Ensure that each phase of the circuit is DEAD (only an HV

testing device suitable for the rated voltage of the circuit shall be

used).


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SP-1104 ESR 5 - Page 7 of 9 06/10/2004

The APPROVED voltage testing device shall be checked before

and after use to check it is functioning correctly.

(iii) Examine the portable EARTHING leads prior to use to ensure

that they are in good condition.

(iv) Connect the portable EARTHING leads to the EARTH system

before securing them to the phase conductors. Care must be

taken to ensure that good contact is made.

(v) EARTH and short circuit all phases even if work is to be carried

out on one phase only.

and

(vi) When removing portable EARTHING leads disconnect them from

the phase conductors first and the EARTH system last.

NOTE: 1 When portable EARTHING leads are used as CIRCUIT

MAIN EARTHS, an APPROVED label shall be attached

with the letters 'C.M.E'.2 When portable EARTHING leads are used as

ADDITIONAL EARTHS, an APPROVED label shall be

attached with the letters 'A.E'.

5.5.2.2 ACCOMPANIED SWITCHING

If a CIRCUIT MAIN EARTH is to be applied using portable EARTHING

leads in accordance with 5.5.2.1(b), then the AEP carrying out this

SWITCHING shall be accompanied by a CEP.

5.5.3 Low Voltage Earthing5.5.3.1 Any LV EARTH applied on DEAD LV switchboards shall be in accordance

with Rule 5.5.3.2 and their application shall be recorded in the 'Other

Precautions Section' of the relevant ELECTRICAL PERMIT-TO-WORK.

5.5.3.2 For LV APPARATUS only APPROVED portable EARTHING devices shall

be used as LV EARTHS. If these EARTHING devices are used then all

phases and neutral of the LV APPARATUS shall first be tested with an

APPROVED voltage testing device. (Only an LV testing device shall be

used). The voltage testing device shall be checked before and after use.

5.5.3.3 The portable EARTHING devices shall then be applied in a similar manner to

the sequence of procedures specified in Rule 5.5.2.1b(i), (iii) (iv), (v) and (vi).

5.6 APPROACH TO EXPOSED LIVE HIGH VOLTAGE CONDUCTORSOR INSULATORS SUPPORTING THEM

5.6.1 Safety Distances

(a) The SAFETY DISTANCE (designated 'X' in Table 1 and Diagram 1

of page 9 of this section) shall be maintained at the respective system


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voltages between any part of the person or object and the nearest LIVE

HV conductor.

(b) A distance of 300 mm shall also be maintained, at all system voltages,

from the portion of insulators supporting LIVE HV conductors which

is outside the appropriate SAFETY DISTANCE from the conductors.

5.6.2 Approach of Persons

(a) No person shall, except, for the provision of Rule 5.6.2(b), allow any

part of his body to approach exposed HV CONDUCTORS or

insulators supporting such conductors within the SAFETY

DISTANCES specified in Rule 5.6.1, unless the conductors have been

made DEAD, ISOLATED and EARTHED and an ELECTRICAL

PERMIT-TO-WORK or SANCTION-FOR-TEST has been issued.

(b) When a person is applying an APPROVED voltage testing device or

phasing device to HV conductors contained within metal enclosed

switchgear, it is allowable for those parts of the body to approach

within the SAFETY DISTANCES specified in Rule 5.6.1 subject toAPPROVED procedures.

5.6.3 Testing of Conductors

(a) When exposed HV conductors are not ISOLATED, the only objects to

approach them or insulators supporting them, within the SAFETY

DISTANCE specified in Rule 5.6.1 shall be APPROVED voltage

testing devices.

(b) When exposed HV conductors are ISOLATED but not yet proved

DEAD the only objects which shall approach them or the insulators

supporting them, within the SAFETY DISTANCES specified in Rule5.6.1 shall be APPROVED voltage testing devices.

5.6.4 Work Near Live Conductors

(a) When work is to take place in the vicinity of LIVE HV conductors the

AEP shall, taking into account the nature and location of the work and

the tools or objects to be used, determine how the SAFETY

DISTANCES specified in Rule 5.6.1 have to be maintained by the

persons working.

(b) If no ELECTRICAL PERMIT-TO-WORK or SANCTION-FOR-

TEST is issued for adjacent APPARATUS, then the AEP shall issue a

LIMITATION-OF-ACCESS to the CEP in charge of the work,specifying how the SAFETY DISTANCES from LIVE conductors

shall be maintained during the course of the work.

NOTE: APPENDIX F gives guidance on the application of Rule 5.6 to

various operational situations.


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5.7 TESTING OF HIGH VOLTAGE APPARATUS BEFORE IT ISCONNECTED TO AN ELECTRICAL SYSTEM

5.7.1 When HV APPARATUS is to have an HV test voltage applied before the

connections are attached that would enable it to be made LIVE from an

electrical system, the AEP responsible for applying the HV test voltage does

not require a SANCTION-FOR-TEST if the HV APPARATUS does not yet

come within the scope of the Electrical Safety Rules.

5.7.2 The AEP shall ensure that when a HV test voltage is being applied to

APPARATUS, adequate precautions are taken to guard the APPARATUS to

prevent DANGER.

These precautions shall include:-

(a) DANGER NOTICES being attached to the APPARATUS during the

period the HV testing is taking place.

(b) All APPARATUS, particularly cables, are discharged to EARTH beforeand after the application of the HV test voltage.

(c) Any temporary conductors used for applying the HV test voltage shall

be of adequate size and be easily visible.

(d) Test connections shall not be applied in a cell or compartment in which

there are exposed LIVE HV conductors.

When such testing using an HV testing voltage supply is carried out, the AEP

shall be accompanied by a CEP.

NOMINAL SYSTEM VOLTAGE SAFETY DISTANCE 'X'Up to and including 33 kV 0.8 m

Exceeding 33 kV but not exceeding 66 kV 1.0 m



Table 1


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NOTE: X = safety distance

(from live HV conductors)

30cm

30cm

X

X

X

DIAGRAM 1


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6. Issue And Control Of Electrical Safety Documents

6.1 INITIATION OF DOCUMENTS

6.1.1 A WORK PERMIT shall always be issued prior to issuing an ELECTRICAL

SAFETY DOCUMENT in accordance with the Permit to Work Manual. Theissued ELECTRICAL SAFETY DOCUMENT(S) and the WORK PERMIT

shall cross-refer.

6.1.2 An ELECTRICAL PERMIT-TO-WORK shall be agreed by the CP and

issued by an ELECTRICAL PERSON, under whose approval the work is

initiated, before any work is carried out on any HV APPARATUS after it has

once been connected to the HV system.

An ELECTRICAL PERMIT-TO-WORK shall be agreed by the CP and

issued by an ELECTRICAL PERSON before any work is carried out on any

LV APPARATUS that requires a CIRCUIT MAIN EARTH to be applied to

HV APPARATUS.

A SANCTION-FOR-TEST shall be agreed by the CP and issued by a SAEP

under whose approval the testing is initiated, before any testing is carried out

on any HV APPARATUS after it has once been connected to and remains

part of an HV system.

If an ELECTRICAL PERMIT-TO-WORK has been issued on HV or LV

APPARATUS, then until that ELECTRICAL PERMIT-TO-WORK is

canceled, a SANCTION-FOR-TEST shall NOT be issued on that same

APPARATUS.

A LIMITATION-OF-ACCESS shall be issued by an AEP when verbal

instructions are not considered sufficient, particularly when work is to be

undertaken in the close proximity of LIVE uninsulated HV or LV conductors.

A LIMITATION-OF-ACCESS shall be issued by an AEP to allow LIVE

LINE WORKING or LIVE LINE WASHING procedures to take place. The

CP shall be informed when a LIMITATION-OF-ACCESS for these specified

activities is issued.

6.1.3 An ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE shall be

issued by a responsible member of a Custodian Department to a third party

who is to carry out non-electrical work on APPARATUS that needs to be

ISOLATED before work commences.

An ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE (allowing

restoration of motive power) shall be issued by a responsible member of aCustodian Department to a third party who is to carry out non-electrical work

and subsequent on-load checks on APPARATUS that needs to be

ISOLATED before work commences.

An ELECTRICAL IMMOBILISATION/MOBILISATION CERTIFICATE

shall be issued by a responsible member of a Custodian Department to a third

party who is to carry out non-electrical work on LV motor circuits that needs

to be immobilised before work commences.


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SP-1104 ESR 6 - Page 3 of 4 06/10/2004

Permission to commence and carry out the ISOLATION or immobilisation of

the APPARATUS, under either type of ELECTRICAL ISOLATION/DE-

ISOLATION OR ELECTRICAL IMMOBILISATION/MOBILISATION

CERTIFICATE, shall be given to the ELECTRICAL PERSON or

APPOINTED PERSON by the Custodian Department's representative at the

site of the APPARATUS.

6.3 PRECAUTIONS DURING PROGRESS OF WORK

6.3.1 HV APPARATUS ISOLATED and EARTHED for work under the terms of

an ELECTRICAL PERMIT-TO-WORK shall remain so until the

ELECTRICAL PERMIT-TO-WORK has been cleared, returned to an AEP

and cancelled.

The APPARATUS ISOLATED and EARTHED for testing under the terms

of a SANCTION-FOR-TEST shall not be connected to the system without

the agreement of the CP. The recipient of the SANCTION-FOR-TEST shall

be responsible for coordinating all testing operations on the ISOLATED

APPARATUS and for ensuring safety during the tests. He may, without

reference to the CP, remove and replace EARTHS as necessary and carry outtests including making LIVE the APPARATUS concerned from a testing

supply. This does not mean that the recipient of the SANCTION-FOR-TEST

has to carry out the tests personally, but that they shall be carried out under

his direct supervision.

6.3.2 The APPARATUS ISOLATED for work by a third party under an

ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE or

IMMOBILISATION/ MOBILISATION CERTIFICATE shall remain so until

the work is complete.

The APPARATUS ISOLATED for work and on-load checking by a third

party under an ELECTRICAL ISOLATION/DE-ISOLATIONCERTIFICATE (allowing restoration of motive power) may be DE-

ISOLATED by the ELECTRICAL PERSON to allow on-load checks on the

APPARATUS to be made by the third party, but only under the direct

supervision of the ELECTRICAL PERSON.

6.4 PROCEDURE FOR CLEARANCE AND CANCELLATION

6.4.1 When work on APPARATUS for which an ELECTRICAL PERMIT-TO-

WORK has been issued is completed, the recipient shall sign the clearance and

return the ELECTRICAL PERMIT-TO-WORK to an AEP who shall cancel

it and inform the CP.

Where more than one ELECTRICAL PERMITTO-WORK has been issued

for work on HV APPARATUS associated with the same CIRCUIT MAIN

EARTHS, the CP shall ensure that all such ELECTRICAL PERMITS-TO-

WORK have been cancelled before the CIRCUIT MAIN EARTHS are

removed.

When testing on APPARATUS for which a SANCTION-FOR-TEST has

been issued is completed, the recipient shall sign the clearance and return the

SANCTION-FOR-TEST to a SAEP for cancellation.


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06/10/2004 ESR 6 - Page 4 of 4 SP-1104

A circuit under SANCTION-FOR-TEST shall have all CIRCUIT MAIN

EARTHS restored prior to cancellation unless agreement was reached with

the CP at the time of issue to accept the cancellation of the SANCTION-

FOR-TEST without these EARTHS in position.

The SAEP, before canceling the SANCTION-FOR-TEST shall enter under

"Exceptions" the changes of state of EARTHING of the circuit and then

inform the CP of the cancellation and of the operational state of the circuit.When work for which a LIMITATION-OF-ACCESS has been issued is

completed, the recipient shall sign the clearance and return the

LIMITATION-OF-ACCESS for cancellation to an AEP.

When a LIMITATION-OF-ACCESS which allowed LIVE LINE WORKING

or LIVE LINE WASHING procedures is canceled, then the CP shall be

informed.

6.4.2 When work by a party under an ELECTRICAL ISOLATION/DE-

ISOLATION CERTIFICATE or IMMOBILISATION/MOBILISATION

CERTIFICATE is complete the Custodian Department's representative on the

site of the APPARATUS shall return the CERTIFICATE to a suitably

authorised ELECTRICAL PERSON or APPOINTED PERSON as a request

to DE-ISOLATE the circuit and make the APPARATUS ready for

operational use.

When the work and the on-load checks by a third party under an

ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE (allowing

restoration of motive power) are complete, the Custodian Department's

representative on the site of the APPARATUS shall return the

CERTIFICATE to a suitably authorised ELECTRICAL PERSON as a

request to DE-ISOLATE the circuit and make the APPARATUS ready for

operational use.


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7. Precautions to be Taken on Specific Items of Apparatus

7.1 WORK ON OVERHEAD LINES

7.1.1 Identification Of Circuits

7.1.1.1 Single Circuit High Voltage Overhead Lines

Where poles or structures supporting LIVE conductors are part of an

overhead line circuit whose route runs near, or in the immediate vicinity of

other overhead line circuits, then those poles or structures shall carry an

APPROVED label or symbol to enable easy identification of that circuit from

ground level.

7.1.1.2 Double Circuit High Voltage Overhead Lines

Where single towers or structures are used to support the LIVE conductors

of two circuits, then each tower or structure shall carry APPROVED labels or

symbols, so that a positive identification of each circuit, and the position of itsconductors on the towers and structures, can be made both by persons from

ground level, and by persons working up a tower or structure under an

ELECTRICAL SAFETY DOCUMENT.

7.1.2 General

The procedures called for in Rule 5.1.3 and Rule 5.1.4 shall apply for all work

on overhead lines.

7.1.3 Approach of Lightning

On the near approach of a lightning storm, all work on overhead lines shall

cease immediately and the CEP in charge shall inform the AEP that his

WORKING PARTY are not working on the overhead line.

7.1.4 Work on Poles Supporting The High Voltage Conductors of OneCircuit

No CEP shall climb any such pole supporting LIVE conductors except under

the direct supervision of an AEP, who shall ensure that the person does not

ascend to a position in which it is possible for him to bring any part of his

body or working tool within the SAFETY DISTANCES specified in Rule 5.6.

Additionally when work is to be carried out within one meter distance outside

the SAFETY DISTANCES specified in Rule 5.6, the AEP shall issue aLIMITATION-OF-ACCESS to the CEP.

A DANGER NOTICE shall also be attached to the pole at a distance from

LIVE conductors not less than those specified in Rule 5.6.


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06/10/2004 ESR 7 - Page 4 of 9 SP-1104

the point of work and the APPROVED red and green flags and DANGER

NOTICES are kept in position.

7.1.8 Work on the Common Earth Conductor of Double CircuitOverhead Lines

7.1.8.1 Before work commences on the overhead common EARTH conductor of adouble circuit overhead line, the AEP shall ensure that both circuits are made

DEAD, and that the procedures called for in Rule 5.3 and Rule 7.1.6 are

applied for both circuits.

7.2 WORK ON UNDERGROUND CABLES

7.2.1 Work on High Voltage Cables

For work on HV cables, the AEP in addition to the procedures called for in

Rule 5.3 shall:-

(a) Ensure that no person touches or cuts into the insulation which coversthe conductor, unless the conductor is DEAD, ISOLATED and

EARTHED.

(b) Before issuing the ELECTRICAL PERMIT-TO-WORK to the CEP,

identify the cable to be worked on at the point of work, and prove it

dead by APPROVED spiking equipment or other APPROVED means.

7.2.2 Work on Low Voltage Cables

For work on LV cables, the CESP in addition to the procedures called for in

Rule 5.4 shall:-

(a) Take all reasonably practicable steps to prevent the cable being madeLIVE in error during the course of work.

(b) Keep any SAFETY PADLOCK keys, withdrawn fuses or links in a safe

place during the course of work.

(c) Before the start of the work, clearly identify the cable at the point of

work to the person in charge of the work.

7.2.3 Work In The Vicinity of Buried High Voltage Cables

7.2.3.1 Accidental striking of power or auxiliary cables buried in the ground can

result in fatal or severe accidents in addition to possible loss of electrical

supplies to important installations. To prevent such incidents it is necessary

for a responsible member of the Custodian Department to issue an

EXCAVATION PERMIT to the person in charge of the excavation.

7.2.3.2 If the excavations are in the vicinity of underground electrical cables then an

AEP shall specify on the EXCAVATION PERMIT any additional precautions

that shall be taken to safeguard the cables.

7.2.3.3 If in the view of the AEP the cables should be made DEAD, then an

ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE shall be

issued to cover this SWITCHING.


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SP-1104 ESR 7 - Page 5 of 9 06/10/2004

7.3 WORK ON HIGH VOLTAGE TRANSFORMERS

7.3.1 For work on HV transformers, the AEP in addition to the procedures called

for in Rule 5.3 shall:-

(a) Ensure that, where auxiliary or voltage transformers cannot beISOLATED from the HV conductors, the LV fuses or links are

withdrawn and kept in a safe place during the progress of the work.

(b) Where work is to be carried out on an HV/LV transformer, ensure that

the LV windings are ISOLATED either by the opening of a switch or

withdrawal of fuses or links, so that any possible backfeed is prevented

during the progress of the work. Attach CAUTION NOTICES at the

points of ISOLATION.

(c) Before issuing the ELECTRICAL PERMIT-TO-WORK to the CEP,

identify at the point of work, the transformer to be worked on.

7.4 WORK ON HIGH VOLTAGE SWITCHGEAR

7.4.1 Withdrawable Apparatus

When work is to be carried out on withdrawable HV APPARATUS (e.g. a

circuit breaker), then the AEP in addition to the procedures called for in Rule

5.1.1. shall:-

(a) Disconnect the withdrawable HV APPARATUS from all supplies and

remove from its normal service housing.

(b) Discharge its conductors to EARTH, but they need not remain

connected to EARTH.

7.4.2. Work on Busbar Spouts

When work is to be carried out on the busbars or busbars spouts of multi-

panel switchboards then the AEP in addition to the procedures called for in

Rule 5.3 shall:-

(a) Ensure that the section of the busbars on which work is to be carried

out are made DEAD and ISOLATED from all points of supply from

which it can be made LIVE.

(b) Ensure that the ISOLATING arrangements are secured with SAFETY

PADLOCKS, and where practicable, the shutters of LIVE spouts

locked shut.

(c) Attach CAUTION NOTICES at all points where the busbars can be

made LIVE.

(d) Attach DANGER NOTICES, where applicable, on or adjacent to

APPARATUS containing LIVE conductors at the limits of the busbar

on which work is to be carried out.

(e) Test with an APPROVED voltage testing device that the busbars are

dead, checking the voltage testing device before and after use.


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(f) EARTH the busbar at the point of testing and where practicable lock

the CIRCUIT MAIN EARTH in position.

Attach an EARTHED NOTICE to the circuit breaker or EARTHING device.

(g) Test with an APPROVED voltage testing device every spout where

work is to be carried out, checking the voltage testing device before

and after use.

(h) Issue an ELECTRICAL PERMIT-TO-WORK to a CEP.

7.5 WORK IN SUBSTATIONS WITH EXPOSED HIGH VOLTAGECONDUCTORS

7.5.1 Safety Distances to Live Conductors

When work is to be carried out in substations where there are exposed LIVE

HV conductors, then unless the whole APPARATUS and conductors are to

be made DEAD, the AEP in addition to the procedures called for in Rule 5.3

shall:-

(a) Identify the area where work may be carried out safely and ensure that

SAFETY DISTANCES called for in Rule 5.6 are maintained by the

WORKING PARTY and the tools and equipment they are to use. If no

ELECTRICAL PERMIT-TO-WORK or SANCTION-FOR-TEST is

issued for adjacent APPARATUS in the substation, then he shall issue a

LIMITATION-OF-ACCESS to the CEP in charge of the work,

specifying how the SAFETY DISTANCES from LIVE conductors

shall be maintained during the course of the work.

(b) If APPROVED barriers or ropes are necessary to define the safe area of

work, ensure that these are clearly visible and are not tied or supported

by any structure carrying LIVE APPARATUS or conductors. The safe

area shall be identified by the attaching of green flags inside the barriers

or ropes and DANGER NOTICES attached to adjoining LIVE

APPARATUS.

(c) Ensure that ladders required for the work shall be of an APPROVED

type and be kept secure with a STANDARD ELECTRICAL

PADLOCK when not in use.

When ladders are used to gain access to DEAD APPARATUS, subject

to an ELECTRICAL PERMIT-TO-WORK, these shall be locked in

position with a STANDARD ELECTRICAL PADLOCK or by any

other APPROVED means such that they cannot be removed

unauthorised.(d) Ensure that if ladders, scaffolding, cranes etc, are to be used, that the

position that they shall be placed and the route through the substation

to that position shall first be agreed. Scaffolding and cranes, etc., shall

be connected to the substation EARTH system as soon as they are in

position for work to take place.


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7.6 WORK ON REMOTELY OR AUTOMATICALLY CONTROLLED HVAPPARATUS

7.6.1 Physical Danger

Serious bodily harm can be suffered by persons working on HVAPPARATUS such as tap-change gear, circuit breakers, etc, due to the

automatic or remote control feature being operated in error.

7.6.2 Precautions

For work on remotely or automatically controlled HV APPARATUS such as

tap-change gear, circuit breakers, disconnectors, etc., the AEP before work

commences shall:-

(a) Ensure that all remote control and automatic features are made so that

they cannot be operated and, where practicable, secure with SAFETY

PADLOCKS and CAUTION NOTICES.

(b) Take such precautions to ensure that no work will be in progress on the

tap-changer, circuit breaker etc., when work is taking place on the

controlling equipment associated wiring or relays, except when it is

undertaken by an AEP or CEP acting under his direct supervision.

7.7 WORK AND TESTING ON HV MOTOR CIRCUITS (INCLUDES HVCIRCUITS WITH AN LV MOTOR, EG. BEAM PUMP CIRCUITS)

7.7.1 As no electricity can be backfed from an ISOLATED HV motor circuit, the

following procedure may be adopted if the CP and the AEP both agree to its

use, for routine maintenance work only, without preparing a SWITCHINGPROGRAMME for a particular circuit.

7.7.2 The AEP shall then, in sequence:-

(a) Open the HV motor circuit making the motor DEAD.

(b) ISOLATE the HV motor circuit and apply SAFETY PADLOCKS and

CAUTION NOTICE at the point of ISOLATION.

(c) EARTH the HV motor circuit at the point of ISOLATION through the

circuit breaker or by other APPROVED means, (ie. apply a CIRCUIT

MAIN EARTH).

Attach an EARTHED NOTICE to the circuit breaker, if applicable.

(d) Issue an ELECTRICAL PERMIT-TO-WORK to the CEP at the point

of work.

(e) Receive back the ELECTRICAL PERMIT-TO-WORK with the

'Clearance Section' signed off by the CEP when the work is completed.

(f) Notwithstanding the requirements of Rule 5.5.1 and Rule 6.3, remove

the CIRCUIT MAIN EARTH and apply a 'megger' test to the HV

motor circuit, to satisfy routine maintenance requirements.


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(g) Cancel the ELECTRICAL PERMIT-TO-WORK, remove SAFETY

PADLOCKS, CAUTION NOTICES, any DANGER and EARTHED

NOTICES and restore the circuit breaker to the service position.

7.8 WORK ON LOW VOLTAGE SWITCHBOARDS

7.8.1 Due to the danger of electrical backfeeds from both HV transformers and LV

incoming switchgear units, busbars, bus section units, all work on these LV

items of APPARATUS require strict precautions and the issue of a

LIMITATION-OF-ACCESS or an ELECTRICAL PERMIT-TO-WORK to

the person in charge of the work.

7.8.2 If the design of the LV system or switchboard connections are such that

complete ISOLATION of the incoming switchgear unit to be worked on

requires the ISOLATION of the HV winding of an HV/LV transformer then,

in addition to the opening of LV switchgear units, the following procedure

shall be carried out by the AEP:-

(a) All such LV switchgear units shall be opened and, where practicable, a

SAFETY PADLOCK applied.CAUTION NOTICES shall be attached to such switchgear units.

(b) DANGER NOTICES shall be attached to LIVE APPARATUS

adjacent to the point of work.

(c) The HV/LV transformer shall be switched out, ISOLATED and a

CAUTION NOTICE attached at the point of ISOLATION.

(d) A CIRCUIT MAIN EARTH shall be applied to the HV winding of the

transformer.

(e) An ELECTRICAL PERMIT-TO-WORK shall be issued at the point of

work to the person in charge of the work.

(f) Any LV EARTH applied on the DEAD switchboard shall be in

accordance with Rule 5.5.3 and its application shall be recorded in the

'Other Precautions Section' of the ELECTRICAL PERMIT-TO-

WORK.

7.8.3 If work on LV switchboards does not require ISOLATION and EARTHING

of HV APPARATUS then if LV EARTHS are applied on the LV

APPARATUS their application shall be recorded in the Other Precautions

Section' of the ELECTRICAL PERMIT-TO-WORK issued for the work.

7.9 WORK ON HIGH VOLTAGE STATIC CAPACITORS

7.9.1 For work on HV static capacitors the AEP in addition to the procedures

called for in Rule 5.3 shall:-

(a) Apply APPROVED capacitor EARTHING devices to the capacitor

frames.

(b) Apply APPROVED capacitor EARTHING devices to the common

connection of each group of capacitors.


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(c) Issue ADDITIONAL EARTHS to the CEP holding the ELECTRICAL

PERMIT-TO-WORK and instruct him to apply these to the capacitor

units at the point of work.

7.9.2 Capacitor units shall be short-circuited and remain short-circuited:-

(a) When removed from the circuit

or

(b) In cases where the AEP finds it is not practicable to apply the

EARTHING requirements of Rule 7.9.1.

7.10 SWITCHING, WORKING OR TESTING IN HAZARDOUS AREAS.

7.10.1 General

All electrical work and/or electrical testing in PDO designated hazardous

areas shall be undertaken in accordance with the requirements of the Permit-

to-Work System supplemented, as may be applicable, by these Rules.

All the precautions called for in other sections of these Rules that apply to

SWITCHING, work or testing on either HV or LV APPARATUS, shall

apply to all the APPARATUS located in hazardous areas.

7.10.2 Additional Precautions

The person in charge of work or testing in hazardous areas shall ensure that:-

(a) Before removing any covers of certified APPARATUS the incoming

connections, including the neutral, are made DEAD and have been

ISOLATED at a unit outside the hazardous area.

(b) No SWITCHING, testing or other operations are carried out oncertified APPARATUS, whilst its covers are removed and the electrical

connections are exposed to the atmosphere.

unless

(c) Suitable gas testing equipment is first used to check that no flammable

gases, that could create a hazard, are present at the point of work or

testing.


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8. Live Line Working

8.1 GENERAL

8.1.1 To date no PDO personnel have been trained, authorised or equipped to carry

out LIVE LINE WORKING procedures on HV conductors on the PDOelectrical systems.

8.1.2 Contractors selected to carry out such LIVE LINE WORKING procedures in

PDO shall have proven LIVE LINE WORKING procedures, adequately

trained and experienced staff and the necessary well maintained LIVE LINE

tools and equipment to carry out such work. (See ESOP 22 for guidance).

8.1.3 The AEP before initiating LIVE LINE WORK shall ensure that the

Contractor's Supervisor has the written procedures, the necessary evidence

and certificates on site to satisfy him that the requirements of Rule 8.1.2 are

met. (See ESOP 22 for guidance).

8.1.4 The LIVE LINE WORKING and the safety of the team shall be theresponsibility of the Contractor's Supervisor, who shall ensure that the

procedure is carried out correctly and is present throughout the procedure to

ensure that it is in accordance with the Rules in this Section 8.0.

8.2 LIVE LINE TOOLS AND EQUIPMENT

8.2.1 LIVE LINE tools and equipment shall be kept in a clean and dry condition

and immediately before use be inspected by the Contractor's Supervisor to

ensure they are clean, dry and in sound condition.

8.2.2 A clear mark shall be maintained on every LIVE LINE tool and equipment

where appropriate, indicating the limit of the safe handling distance whichshall not be less than as indicated in Table 2 below.

NOMINAL SYSTEM VOLTAGESAFE HANDLING

DISTANCE

Up to and including 33 kV 1.1 m




Table 2


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8.3.1 The AEP shall inform the CP of the nature and location of the LIVE LINE

WORK to be carried out by the Contractor.

8.3.2 If the circuit to be worked on is controlled by an automatic circuit reclosingdevice, work shall not commence until the automatic reclosing features have

been made inoperative.

8.3.3 The AEP shall issue a LIMITATION-OF-ACCESS to the Contractor's

Supervisor who is in charge of the LIVE LINE WORK.

The LIMITATION-OF-ACCESS shall state the name of the circuit, its

identification label or symbol, the precautions taken by the AEP and a brief

description of the work to be carried out using the LIVE LINE WORKING

procedure.

8.3.4 The AEP shall agree with the CP that if the circuit becomes dead due to the

operation of protective equipment, the circuit shall not be re-energisedwithout reference being made to him on site and his consent obtained.

The AEP shall normally remain on site throughout any LIVE LINE

WORKING taking place on wood pole overhead lines, or in his absence,

appoint a CEP to represent him with full authority to stop the work if he

considers the Contractors are not working safely. (See ESOP 22 for

guidance).

The AEP shall remain on site throughout any LIVE LINE WORKING that

takes place in substations or on double circuit overhead lines. (See ESOP 22

for guidance).

8.3.5 No LIVE LINE WORKING shall commence in unfavourable conditions, such

as rain, fog or high winds.

8.3.6 If weather or other unforeseen conditions make it necessary to suspend LIVE

LINE WORKING, then the circuit conductors and the equipment shall be left

in a safe condition and the CP informed.

8.3.7 Before work commences, all conductors and associated pole top, line and

tower fittings, steelwork and insulators shall be thoroughly examined at the

point of work, through binoculars if necessary, so as to minimise the

possibility of failure of these parts during LIVE LINE WORK. This

examination shall extend to include adjacent spans and supports on both sides

of the point of work.

Before any pole is climbed it shall be sounded. No pole badly impaired bydecay or damage shall be climbed until the Contractor's Supervisor is satisfied

that he has made it safe for climbing, alternatively access to the top of the

pole shall be by suitable means independent of the pole.

8.3.8 Before displacing conductors adequate precautions shall be taken to avoid

DANGER and to ensure the safety of third persons, Safe clearances shall also

be maintained between the line and other APPARATUS and objects.


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8.3.9 No vehicle or person other than members of the LIVE LINE WORKING

team shall be allowed in the near vicinity of the point of work while the work

is in progress without the consent of the Contractor's Supervisor in charge of

the LIVE LINE WORK. Temporary markers may be erected to ensure this

requirement is met.

8.3.10 No person shall climb, move or work in such a position to bring any part of his

body, clothing or any working tool, other than LIVE LINE WORKING toolsor equipment, within the distances as indicated in Table 3 below. This distance

shall be marked on the structure.

NOMINAL SYSTEM VOLTAGE SAFE DISTANCE

Up to and including 33 kV 1.1 m




Table 3

8.3.11 The Contractor's Supervisor shall be responsible for ensuring all personnel of

the LIVE LINE WORKING team wear the protective clothing and equipment

necessary for this work.

8.3.12 The AEP shall inform the CP when the LIVE LIN


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9. Live Line Washing

9.1 GENERAL

9.1.1. To date no PDO personnel have been trained, authorised or equipped to carry

out LIVE LINE WASHING on HV insulators on PDO electrical systems.9.1.2 Contractors selected to carry out such LIVE LINE WASHING shall have

proven LIVE LINE WASHING procedures, adequately trained and

experienced staff and all the necessary well maintained equipment to carry out

such work. (See ESOP 22 for guidance).

9.1.3 The AEP before initiating LIVE LINE WASHING shall ensure that the

Contractor's Supervisor has the necessary evidence and certificates on site to

satisfy him that the requirements of Rule 9.1.2 are met. (See ESOP 22 for

guidance).

9.1.4 The LIVE LINE WASHING and the safety of the team shall be the

responsibility of the Contractor's Supervisor, who shall ensure that the workis carried out correctly and is present all the time the washing is taking place

in accordance with the Rules in this Section 9.0.

9.2 LIVE LINE WASHING EQUIPMENT

9.2.1 Monitoring devices to check the conductivity of the water to be used shall be

available on site.

9.2.2 The equipment shall have a nozzle which is such that the water ejected by it

breaks into a spray before reaching the insulator being washed.

9.2.3 The nozzle and metal parts of the equipment shall be bonded together to

EARTH by a suitable EARTHING lead which is not less than 70 mm2 copperequivalent in cross-section.


9.3.1 The AEP shall inform the CP of the location of the LIVE LINE WASHING

to be carried out by the Contractor.

9.3.2 The AEP shall issue a LIMITATION-OF-ACCESS to the Contractor's

Supervisor who is in charge of the LIVE LINE WASHING.

The LIMITATION-OF-ACCESS shall state the name of the circuit, its

identification or symbol and any precautions taken by the AEP.The AEP shall normally remain on site throughout the LIVE LINE

WASHING taking place on wood pole overhead lines, or in his absence,

appoint a CEP to represent him with full authority to stop the washing if he

considers the Contractors are not working safely. (See ESOP 22 for

guidance).

The AEP shall remain on site throughout the LIVE LINE WASHING taking

place in substations or on double circuit overhead lines. (See ESOP 22 for

guidance).


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9.3.3 The water being used for LIVE LINE WASHING shall have a conductivity

of less than 400 micro siemens/cm. This shall be constantly monitored as a

rise in the water temperature increases its conductivity. The water quality

monitoring shall be done using an automatic monitoring device fitted with an

audible alarm signal.

When no connection to a fixed EARTH plate is available on site for thebonding called for in Rule 9.2.3, the Contractor's Supervisor shall have a

temporary EARTH electrode installed and check that its resistance is

adequate for the operator's safety before commencing any LIVE LINE

WASHING. (See ESOP 22 for guidance).

9.3.4 The safety clearance necessary between the hose operator and LIVE

conductors will depend on the system voltage, the method of washing and the

efficiency of the breakup of the jet of water.

The safety clearance necessary shall be agreed between the Contractor's

Supervisor and the AEP depending on the Contractor's methods, equipment

and experience.

9.3.5 The LIVE LINE WASHING shall not commence in unfavourable conditions

such as high winds as this would affect the direction of the water jets.

9.3.6 Only one phase insulator shall be washed by the same jet.

9.3.7 No other LIVE conductor at a lesser distance than the one being washed shall

be sprayed in error.

9.3.8 LIVE LINE WASHING shall stop in the event of a local lightning risk.

9.3.9 The Contractor's supervisor shall be responsible for ensuring that the LIVE

LINE WASHING operator wears any protective clothing necessary for this

work.

9.3.10 The AEP shall inform the CP when the LIVE LINE WASHING is complete.


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10. USE OF APPOINTED PERSONS

10.1 GENERAL

10.1.1 For use in certain situations, or at specific locations, there is sometimes the

need of a person who can carry out tasks that would normally be done byELECTRICAL PERSONS as a small part of their operational duties.

Entering a substation, which has no exposed HV conductors, to read meters

or inspect equipment, does not necessarily require the electrical experience of

a person who has CEP status.

10.1.2 The role of an AP is generally defined in Rule 2.1.4.8.

10.2 SWITCHING DUTIES

10.2.1 An AP may be nominated by his Custodian Department to carry out specific

limited HV SWITCHING from a position remote from the circuit breaker, or

limited LV SWITCHING including immobilisation/mobilisation of selected

LV motors using an APPROVED procedure. This SWITCHING shall be

limited to the closing and opening of a circuit breaker or contactor controlling

a generator, motor etc.

10.2.2 If the CP agrees to the AP carrying out this limited SWITCHING, then an

APPROVED PROCEDURE FOR APPOINTED PERSONS shall be

prepared for this purpose and submitted to the relevant Head of Utility, who

after checking and verification will forward the procedure to the CFDH-E for

approval before it is implemented.

Each APPROVED PROCEDURE FOR APPOINTED PERSONS shall have

a unique reference number. (see ESOP 16 for guidance).NOTE:All PROCEDURES FOR APPOINTED PERSONS shall be kept in

one file together with the SWITCHGEAR OPERATING

PROCEDURES.

10.3 APPOINTMENT

Applications for personnel to become AP shall be dealt with in accordance

with ESOP 3.


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APPENDIXA-APPROVEDDEVICESORMETHODSSANCTIONEDFORUSEINPDO

RULE APPROVAL REFERENCE DOC.

H-1.2 CAUTION NOTICE (METL/PLAST) MESC

96,64,68,112.9/207.9

H-1.2 DANGER NOTICE (METL/PLAST) MESC96,64,68,111.9/206.9

H-1.1 EARTHING LEADS ESOP 6

H-1.3 CME LABEL (METL/PLAST) MESC

96,64,68,114.9/209.9

H-1.3 AE LABEL (METL/PLAST) MESC

96,64,68,115.9/210.9

H-1.2 EARTHED NOTICE (METL/PLAST) MESC

96,64,68,113.9/208.9

H-1.3 KEY SAFE ESOP 2H-1.1 INSULATED TOOLS ESOP 22

H-1.1 LIVE LINE WASHING EQUIPMENT ESOP 22

H-1.3 SAFETY PADLOCK ESOP 2

H-1.3 STANDARD ELECTRICAL

PADLOCKS

ESOP 2

H-1.2 SWITCHING PROGRAM ESOP 4

2.1.4 REPORTING PROCEDURE ESOP 18

2.1.5 REPORTING PROCEDURE ESOP 18

2.3.1.4 SAFETY HARNESS MESC 96,10 and 58,20

2.3.2.1[ii] SWITCHING PROGRAM