Electrical Safety Rules by CtMKg8

VIEWS: 42 PAGES: 76

									                  Petroleum Development Oman L.L.C.



                UNRESTRICTED              Document ID : SP-1104 (ERD-64-02)
                Feb. 2000                                   Filing key : A-71




                        Electrical Safety Rules




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.
Electrical Safety Rules                                                   Version 7.0


Authorised For Issue Feb. 2000




Signed : ...............................................
            Graham Barker, OIE
            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        Date       Author                 Scope / Remarks
No.
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 A
                                                 and added App G.
Version 7.0    Feb 00     OIE/3                  Converted to Specification as per PDO
                                                 Policy Cascade




SP-1104                               Page 1 of 3                         29/02/2000
Version 7.0                                         Electrical Safety Rules


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 APPARATUS
       5.4    PRECAUTIONS TO BE TAKEN BEFORE WORKING ON OR TESTING
              LOW VOLTAGE APPARATUS
       5.5    EARTHING
       5.6    APPROACH TO EXPOSED LIVE HIGH VOLTAGE CONDUCTORS OR
              INSULATORS SUPPORTING THEM
       5.7    TESTING OF HIGH VOLTAGE APPARATUS BEFORE IT IS
              CONNECTED 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
       7.5    WORK IN SUBSTATIONS WITH EXPOSED HIGH VOLTAGE
              CONDUCTORS
29/02/2000                    Page 2 of 3                          SP-1104
Electrical Safety Rules                                     Version 7.0
       7.6  WORK ON REMOTELY OR AUTOMATICALLY CONTROLLED HV
            APPARATUS
       7.7 WORK AND TESTING ON HV MOTOR CIRCUITS (includes HV circuits
            with 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
       9.3    SAFETY PRECAUTIONS
10.    USE OF APPOINTED PERSONS
       10.1 GENERAL
       10.2 SWITCHING DUTIES
       10.3 APPOINTMENT


APPENDICES
APPENDIX A  - APPROVED DEVICES OR METHODS SANCTIONED FOR USE IN PDO
APPENDIX B  - ELECTRICAL PERMIT TO WORK
APPENDIX C  - SANCTION FOR TEST
APPENDIX D  - LIMITATION OF ACCESS
APPENDIX E1 - ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE
APPENDIX E2 - ELECTRICAL ISOLATION / DE-ISOLATION CERTIFICATE ALLOWING
              RESTORATION OF MOTIVE POWER FOR ON LOAD CHECKS TO BE MADE
APPENDIX E3 - ELECTRICAL IMMOBILISATION / MOBILISATION CERTIFICATE
APPENDIX F  - WORKING AND ACCESS CLEARANCE
APPENDIX G - CERTIFICATE OF APPOINTMENT
SP USER-COMMENT FORM




SP-1104                       Page 3 of 3                   29/02/2000
Electrical Safety Rules                                                 Version 7.0


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. 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 these
       Rules.
       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 to
       supplement 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, for
               which 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.




SP-1104                       ESR 1 - Page 1 of 1                        29/02/2000
Version 7.0                 Electrical Safety Rules




29/02/2000    Page 2 of 5                 SP-1104
Electrical Safety Rules                                                  Version 7.0


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 definitions
        have 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 LOW
        VOLTAGE 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.




SP-1104                         ESR 2 - Page 1 of 11                      29/02/2000
Version 7.0                                              Electrical Safety Rules


       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.




29/02/2000                 ESR 2 - Page 2 of 11                           SP-1104
Electrical Safety Rules                                                Version 7.0


        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 in
        charge 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).




SP-1104                      ESR 2 - Page 3 of 11                      29/02/2000
Version 7.0                                             Electrical Safety Rules


       ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE
       (allowing restoration of motive power for on-load checks to be made)
       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
       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
       A form of instruction signed and issued by a responsible member of a
       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 LIVE
       HIGH 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
       and precautions required to carry out the specified work safely. The permit

29/02/2000                 ESR 2 - Page 4 of 11                          SP-1104
Electrical Safety Rules                                                Version 7.0
       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.



SP-1104                     ESR 2 - Page 5 of 11                       29/02/2000
Version 7.0                                           Electrical Safety Rules


        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 (for
        example 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 being
        worked on could be made LIVE in error. Only one key shall be supplied for
        each lock.


        STANDARD ELECTRICAL PADLOCKS
        Locks of an APPROVED standard type fitted to prevent access by
        unauthorised persons to power stations, substations or electrical


29/02/2000                 ESR 2 - Page 6 of 11                        SP-1104
Electrical Safety Rules                                   Version 7.0
       APPARATUS not subject to an ELECTRICAL SAFETY DOCUMENT.
       This type of lock shall fit the ‘electrical’ master key system.




SP-1104                   ESR 2 - Page 7 of 11             29/02/2000
Version 7.0                                               Electrical Safety Rules



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 the
        electrical 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.
        The CERTIFICATE OF APPOINTMENT shall state the section of the
        electrical system to which it applies.
        It may also include carrying out the duties of a CONTROL PERSON for a
        specified section of the electrical system.
29/02/2000                  ESR 2 - Page 8 of 11                           SP-1104
Electrical Safety Rules                                              Version 7.0


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 electrical
       system 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
            The CERTIFICATE OF APPOINTMENT shall state the section of the
            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.




SP-1104                      ESR 2 - Page 9 of 11                    29/02/2000
Version 7.0                                             Electrical Safety Rules



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
                             Oman
        Consultant           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 by a person suitably authorised for that function,
        Supervision          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
       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.

29/02/2000                ESR 2 - Page 10 of 11                           SP-1104
Electrical Safety Rules                                             Version 7.0



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




SP-1104                   ESR 2 - Page 11 of 11                     29/02/2000
Version 7.0                                              Electrical Safety Rules



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     OIE
       Head Electrical
       Head     of   Power    system       OIE / 3, HES/1
       operations & Maintenance
       Head of Production Flow Asset       OFO, OQO, OYO, OBO, ONO,
       Team                                OMO, HES
       Area Head of Production Flow        OFO/1F, OFO/1L, OYO/1, OQO/1,
       Asset Team                          OBO/1B, OBO/1R, ONO/1, OMO/1,
                                           HES/1
       Area Electrical Supervisor          OFO/12F,   OFO/12L,    OYO/12,
                                           OQO/12,   OBO/12B,    OBO/12R,
                                           ONO/12, OMO/12, HES/12
       Area Electrical Staff               Staff reporting to an Area Electrical
                                           Supervisor
       Area Estate Services                OFO/16F,   OFO/16L,    OYO/16,
                                           OQO/16,   OBO/16B,    OBO/16R,
                                           ONO/16, OMO/16, HES/12




29/02/2000                ESR 2 - Page 12 of 11                           SP-1104
Electrical Safety Rules                                               Version 7.0


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, to
       make 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 –


SP-1104                      ESR 3 - Page 1 of 2                      29/02/2000
Version 7.0                                             Electrical Safety Rules
       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.




29/02/2000                 ESR 3 - Page 2 of 2                           SP-1104
Electrical Safety Rules                                                  Version 7.0


4.      Authorisation of Electrical Persons and Appointed
        Persons

4.1     GENERAL

        The authorisation of staff to SAEP, AEP(+), AEP, CESP, CEP, CP and AP
        operating 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 all
        APPOINTED 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.




SP-1104                        ESR 4 - Page 1 of 1                        29/02/2000
Electrical Safety Rules                                                  Version 7.0


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 or
        LIMITATION-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 in
        accordance with Rule 7.1.4.




SP-1104                        ESR 5 - Page 1 of 9                        29/02/2000
Version 7.0                                                Electrical Safety Rules



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.




29/02/2000                    ESR 5 - Page 2 of 9                           SP-1104
Electrical Safety Rules                                                  Version 7.0



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 and
              auxiliary 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.




SP-1104                       ESR 5 - Page 3 of 9                        29/02/2000
Version 7.0                                        Electrical Safety Rules
            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.




29/02/2000               ESR 5 - Page 4 of 9                       SP-1104
Electrical Safety Rules                                                 Version 7.0



5.4     PRECAUTIONS TO BE TAKEN BEFORE WORKING ON OR
        TESTING 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 to
              the 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.


SP-1104                       ESR 5 - Page 5 of 9                       29/02/2000
Version 7.0                                                 Electrical Safety Rules
        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).


29/02/2000                    ESR 5 - Page 6 of 9                             SP-1104
Electrical Safety Rules                                                   Version 7.0
                     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 Earthing
5.5.3.1 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 CONDUCTORS
         OR 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
SP-1104                        ESR 5 - Page 7 of 9                        29/02/2000
Version 7.0                                             Electrical Safety Rules
              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 to
              APPROVED 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 Rule
              5.6.1 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.




29/02/2000                  ESR 5 - Page 8 of 9                          SP-1104
Electrical Safety Rules                                                Version 7.0



5.7     TESTING OF HIGH VOLTAGE APPARATUS BEFORE IT IS
        CONNECTED 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
              before and 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
          Exceeding 66 kV but not exceeding 132 kV                 1.4 m
          Exceeding 132 kV but not exceeding 275 kV                2.4 m
                                            Table 1




SP-1104                       ESR 5 - Page 9 of 9                      29/02/2000
Version 7.0                                          Electrical Safety Rules




                                                     X

                                     X




                                X




     DIAGRAM 1



    30cm




     30cm




   NO TE: X = safety distance
         (from live HV conductors)




29/02/2000                    ESR 5 - Page 10 of 9                 SP-1104
Electrical Safety Rules                                                  Version 7.0


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. The
        issued 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 a
        Custodian 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.


SP-1104                        ESR 6 - Page 1 of 4                        29/02/2000
Version 7.0                                               Electrical Safety Rules
        The ELECTRICAL IMMOBILISATION/MOBILISATION CERTIFICATE
        shall only be used by in case the procedure is carried out by a suitably
        authorised APPOINTED PERSON, in accordance with the procedure as
        listed in ESOP 16.

6.2     PROCEDURE FOR ISSUE AND RECEIPT

6.2.1   An ELECTRICAL PERMIT-TO-WORK, SANCTION-FOR-TEST or
        LIMITATION-OF-ACCESS shall be issued to the person in charge of the
        work, who after reading its contents to the person issuing the ELECTRICAL
        PERMIT-TO-WORK, SANCTION-FOR-TEST or LIMITATION-OF-
        ACCESS shall sign its receipt and its duplicate.
        The person to whom an ELECTRICAL PERMIT-TO-WORK or
        LIMITATION-OF-ACCESS is issued shall be a CEP, who shall retain the
        ELECTRICAL PERMIT-TO-WORK or LIMITATION-OF-ACCESS in his
        possession at all times, and remain on site, whilst work is being carried out.
        The person in charge to whom a SANCTION-FOR-TEST is issued shall be
        an AEP+, who shall retain the SANCTION-FOR-TEST in his possession at
        all times, and remain on site, whilst tests are being made.
        Where more than one WORKING PARTY is concerned, an ELECTRICAL
        PERMIT-TO-WORK or LIMITATION-OF-ACCESS shall be issued to the
        CEP in charge of each WORKING PARTY.
        The issue of ELECTRICAL PERMITS-TO-WORK, SANCTIONS-FOR-
        TEST, ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATES,
        IMMOBILISATION/MOBILISATION                 CERTIFICATES          and
        LIMITATIONS-OF-ACCESS shall be logged in a book provided for that
        purpose in a substation, unless the number of the relevant SWITCHING
        PROGRAMME is entered.
6.2.2   An ELECTRICAL IMMOBILISATION/MOBILISATION CERTIFICATE
        shall be taken by the third party to a suitably authorised APPOINTED
        PERSON requesting the immobilisation of the LV motor circuit prior to the
        non-electrical work commencing on such circuit.
        An ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE shall be
        taken by the third party to a suitably authorised ELECTRICAL PERSON
        requesting the ISOLATION of the APPARATUS prior to the non-electrical
        work commencing on such APPARATUS.
        An ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE (allowing
        restoration of motive power) shall be taken by a third party to a suitably
        authorised ELECTRICAL PERSON requesting the ISOLATION of the
        APPARATUS prior to the non-electrical work and subsequent on-load
        checks commencing on such APPARATUS. The ELECTRICAL PERSON
        shall not accept this type of CERTIFICATE (allowing restoration of motive
        power) unless the responsible member of the Custodian Department has
        agreed, at the time of issue, that no other WORK PERMIT shall be issued on
        the APPARATUS until the CERTIFICATE is canceled and returned to the
        Custodian Department.


29/02/2000                   ESR 6 - Page 2 of 4                           SP-1104
Electrical Safety Rules                                                  Version 7.0
        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 out
        tests 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-ISOLATION
        CERTIFICATE (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 PERMIT–TO-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.

SP-1104                       ESR 6 - Page 3 of 4                        29/02/2000
Version 7.0                                               Electrical Safety Rules
        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.




29/02/2000                   ESR 6 - Page 4 of 4                           SP-1104
Electrical Safety Rules                                                  Version 7.0


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
        its conductors 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 One
        Circuit
        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
        a LIMITATION-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.




SP-1104                       ESR 7 - Page 1 of 9                        29/02/2000
Version 7.0                                              Electrical Safety Rules



7.1.5   Work on Towers or Structures Supporting the High Voltage
        Conductors of Two Circuits
        No person shall climb above the anti-climbing guards of such towers or
        structures supporting the LIVE conductors of two circuits, unless he is first
        issued with a LIMITATION-OF-ACCESS, stating the precautions he and his
        WORKING PARTY shall take to avoid DANGER.
        An AEP shall personally ensure that DANGER NOTICES or APPROVED
        red flags are attached to all sides of the tower or structure above which,
        persons climbing shall be instructed not to pass. These DANGER NOTICES
        or APPROVED red flags shall be attached at a distance from the lowest
        LIVE conductor so that persons working on the steelwork beneath them
        cannot bring any part of their bodies or working tools within the SAFETY
        DISTANCES specified in Rule 5.6.
        The AEP shall from the ground directly supervise all such persons climbing
        or working on the towers or structures.

7.1.6   Work on Single or Double Circuit High Voltage Overhead Lines
        with All Conductors Dead
7.1.6.1 For work on HV conductors the AEP in addition to the procedures called for
        in Rule 5.3 shall:-
        (a)   Identify the line to be worked on in an APPROVED manner at the
              point of work.
        (b)   Where practicable ensure that the line is DEAD by checking with an
              APPROVED voltage testing device.
        (c)   If from the point of work the conductors can be seen to be EARTHED,
              dispense the check with an APPROVED voltage testing device.
        (d)   Issue the CEP holding the ELECTRICAL PERMIT-TO-WORK with
              portable EARTHING leads that shall be used as ADDITIONAL
              EARTHS.
7.1.6.2 For work on HV conductors the CEP holding the ELECTRICAL PERMIT-
        TO-WORK shall:-
        (a)   Before the commencement of work apply ADDITIONAL EARTHS at
              or as near as practicable to the point of work. These portable
              EARTHING leads shall be used to bond together all conductors and be
              connected to EARTH.
              An APPROVED label reading 'A.E.' shall be attached to the portable
              EARTHING leads.
        (b)   Remove and re-apply these ADDITIONAL EARTHS at different
              points of work on the line, but only if they are kept between the
              CIRCUIT MAIN EARTH positions.
        (c)   Dispense with the use of ADDITIONAL EARTHS if CIRCUIT MAIN
              EARTHS have been applied in the immediate vicinity at each side of
              the point of work.

29/02/2000                  ESR 7 - Page 2 of 9                           SP-1104
Electrical Safety Rules                                               Version 7.0
        (d)   If the WORKING PARTY leaves the line at any time, check when they
              come back, that they have returned to the same line and that all
              EARTHS adjacent to the point of work, are still in position before
              allowing work to start again.
        (e)   Check that all members of the WORKING PARTY are off the line
              before removing all the ADDITIONAL EARTHS.
        (f)   Sign the 'Clearance Section' of the ELECTRICAL PERMIT-TO-
              WORK.

7.1.7   Work on Double Circuit Lines with one Circuit Live
7.1.7.1 Where the design of towers or structures enables the SAFETY DISTANCES
        as specified in Rule 5.6 to be maintained when persons are working on the
        DEAD conductors of one circuit with the other one LIVE, then in addition to
        the requirements of Rules 5.3, 7.1.6.1 and 7.1.6.2 the following precautions
        shall be taken before work commences.
7.1.7.2 The AEP shall:-
        (a)   At the point of work personally identify the circuit to be worked on,
              and instruct the WORKING PARTY how to obtain safe access, up the
              tower or structure, to the circuit's DEAD conductors.
        (b)   Attach an APPROVED green flag at ground level on the DEAD circuit
              side of the face of the tower or structure showing the safe access
              approach.
        (c)   Attach a DANGER NOTICE at ground level on the LIVE circuit side
              of the face of the tower or structure.
        (d)   Enter on the ELECTRICAL PERMIT-TO-WORK the wording of the
              circuit identification or symbol, that is attached to the tower or
              structure, of the circuit to be worked on.
        (e)   Instruct the CEP holding the ELECTRICAL PERMIT-TO-WORK, to
              climb ahead of the rest of the WORKING PARTY, and to attach
              APPROVED red flags to the cross arms of the tower or structure,
              between the two circuits, drawing attention to the DANGERS of
              approaching the LIVE circuit.
        (f)   Ensure that these APPROVED red flags are attached so that all
              members of the WORKING PARTY are aware that no part of their
              bodies or working tools shall go beyond them and come within the
              SAFETY DISTANCES specified in Rule 5.6.
        (g)   Remain on the ground, adjacent to the tower or structure, watching
              whilst members of the WORKING PARTY are working above the
              anti-climbing guards. Be prepared to warn them if they approach the
              LIVE circuit, and are in DANGER of bringing any part of their bodies
              or working tools, within the SAFETY DISTANCES specified in Rule
              5.6.
7.1.7.3 The CEP holding the ELECTRICAL PERMIT-TO-WORK shall:-
        Ensure that until the work is finished and the rest of the WORKING PARTY
        have descended to the ground, the conductors remain EARTHED at the point

SP-1104                       ESR 7 - Page 3 of 9                     29/02/2000
Version 7.0                                                Electrical Safety Rules
        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 Circuit
        Overhead Lines
7.1.8.1 Before work commences on the overhead common EARTH conductor of a
        double 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 covers
               the 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 made
               LIVE 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.

29/02/2000                    ESR 7 - Page 4 of 9                           SP-1104
Electrical Safety Rules                                                   Version 7.0



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 be
               ISOLATED 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.

SP-1104                        ESR 7 - Page 5 of 9                        29/02/2000
Version 7.0                                                Electrical Safety Rules
        (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 VOLTAGE
        CONDUCTORS

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.




29/02/2000                   ESR 7 - Page 6 of 9                             SP-1104
Electrical Safety Rules                                                Version 7.0



7.6     WORK ON REMOTELY OR AUTOMATICALLY CONTROLLED HV
        APPARATUS

7.6.1   Physical Danger
        Serious bodily harm can be suffered by persons working on HV
        APPARATUS 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 HV
        CIRCUITS 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 SWITCHING
        PROGRAMME 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.


SP-1104                       ESR 7 - Page 7 of 9                      29/02/2000
Version 7.0                                              Electrical Safety Rules
        (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.


29/02/2000                  ESR 7 - Page 8 of 9                           SP-1104
Electrical Safety Rules                                                  Version 7.0
        (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 on
              certified 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.




SP-1104                        ESR 7 - Page 9 of 9                       29/02/2000
Electrical Safety Rules                                                  Version 7.0


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 PDO
        electrical 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 the
        responsibility 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 which
        shall not be less than as indicated in Table 2 below.


                                                               SAFE HANDLING
          NOMINAL SYSTEM VOLTAGE
                                                                 DISTANCE
          Up to and including 33 kV                                    1.1 m
          Exceeding 33 kV but not exceeding 66 kV                      1.3 m
          Exceeding 66 kV but not exceeding 132 kV                     1.7 m
          Exceeding 132 kV but not exceeding 275 kV                    2.4 m
                                           Table 2




SP-1104                       ESR 8 - Page 1 of 3                        29/02/2000
Version 7.0                                                Electrical Safety Rules



8.3     SAFETY PRECAUTIONS

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 reclosing
        device, 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-energised
        without 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 by
        decay 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.



29/02/2000                   ESR 8 - Page 2 of 3                             SP-1104
Electrical Safety Rules                                                  Version 7.0
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
       tools or 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
          Exceeding 33 kV but not exceeding 66 kV                       1.3 m
          Exceeding 66 kV but not exceeding 132 kV                      1.7 m
          Exceeding 132 kV but not exceeding 275 kV                     2.4 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




SP-1104                        ESR 8 - Page 3 of 3                       29/02/2000
Electrical Safety Rules                                                   Version 7.0


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 work
         is 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 copper
         equivalent in cross-section.

9.3      SAFETY PRECAUTIONS

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).

SP-1104                         ESR 9 - Page 1 of 2                        29/02/2000
Version 7.0                                               Electrical Safety Rules


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 the
         bonding 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.




29/02/2000                   ESR 9 - Page 2 of 2                          SP-1104
Electrical Safety Rules                                                   Version 7.0


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 by
         ELECTRICAL 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.




SP-1104                        ESR 10 - Page 1 of 1                       29/02/2000
Electrical Safety Rules                                       Version 7.0

APPENDIX A - APPROVED DEVICES OR METHODS SANCTIONED FOR USE IN PDO


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)       MESC
                                                 96,64,68,111.9/206.9
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 2
H-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              ESOP 2
                PADLOCKS
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                ESOP 4
2.3.2.1[v]      ELECTRICAL RUBBER GLOVES         MESC 96,43,20
                (HV)
2.3.2.1[v]      SAFETY HELMET                    MESC 96,43,30
2.3.2.3         REPORTING PROCEDURE              ESOP 18
2.3.3(b)        SECURITY METHOD                  ESOP 2
2.3.4[i(d)]     VOLTAGE TESTING DEVICE           ESOP 5
2.3.4[iii]      EQUIPMENT AND INSTRUMENTS        -
2.3.4[iii]      ELECTRICAL RUBBER GLOVES         MESC 96,43,20,516.1
                (LV)
2.3.5.2         EARTHING METHOD                  ESOP 6
2.3.5.2[i(b)]   EARTHING LEADS                   ESOP 6
2.3.5.2[i(b)]   VOLTAGE TESTING DEVICE           ESOP 5



SP-1104                                                        29/02/2000
Version 7.0                                      Electrical Safety Rules

2.3.5.2[i(b)]    CME LABEL (METL/PLAST)         MESC
                                                96,64,68,114.9/209.9
RULE             APPROVAL                       REFERENCE DOC.
2.3.5.2[i(b)]    AE LABEL (METL/PLAST)          MESC
                                                96,64,68,115.9/210.9
2.3.5.3[ii]      LV EARTH                       ESOP 6
2.3.6.2(b)       PROVING PROCEDURES             ESOP 5
2.3.6.3(a)       VOLTAGE TESTING DEVICE         ESOP 5
2.3.6.3(b)       VOLTAGE TESTING DEVICE         ESOP 5
2.3.7            VOLTAGE TESTING DEVICE         ESOP 5
2.3.7            PHASING DEVICE                 ESOP 5
2.5.1.1.1        IDENTIFICATION LABEL           SP-1106
2.5.1.1.2        IDENTIFICATION LABEL           SP-1106
2.5.1.5          RED FLAGS                      -
2.5.1.6[i(a)]    IDENTIFICATION METHOD          -
2.5.1.6[i(b)]    VOLTAGE TESTING DEVICE         ESOP 5
2.5.1.6[i(c)]    VOLTAGE TESTING DEVICE         ESOP 5
2.5.1.6[ii(a)]   AE LABEL (METL/PLAST)          MESC
                                                96,64,68,115.9/210.9
2.5.1.6[ii(b)] GREEN FLAGS                      -
2.5.1.6[ii(e)]   RED FLAGS                      -
2.5.1.6[ii(f)]   RED FLAGS                      -
2.5.1.7[iii(a)] RED AND GREEN FLAGS             -
2.5.2.1(b)       CABLE       IDENTIFICATION   & ESOP 10
                 SPIKING
2.5.4.2(e)       VOLTAGE TESTING DEVICE         ESOP 5
2.5.4.2(g)       VOLTAGE TESTING DEVICE         ESOP 5
2.5.5.1(b)       SAFETY BARRIERS OR ROPES       MESC 61,42,48,49x
2.5.5.1(c)       LADDERS                        -
2.5.9[i(a)]      EARTHING DEVICES               ESOP 6
2.5.9[i(b)]      EARTHING DEVICES               ESOP 6
2.8.2[ii]        SWITCHING PROCEDURE            ESOP 3




29/02/2000                                                      SP-1104
 APPENDIX B – ELECTRICAL PERMIT TO WORK
                                                                                                                                   No.
                             Petroleum Development Oman LLC
                             ELECTRICAL PERMIT-TO-WORK
WORK PERMIT No:                                          LOCATION:                                              WORK SITE:
1. ISSUE
   TO ......................................................................................................................................................
   The following APPARATUS has been made safe in accordance with the PDO ELECTRICAL
   SAFETY RULES for the work detailed on this ELECTRICAL PERMIT-TO-WORK to proceed:-
   APPARATUS: ...................................................................................................................................
   ............................................................................................................................................................
   ............................................................................................................................................................
                                              TREAT ALL OTHER APPARATUS AS LIVE
   WORK TO BE COMPLETED: .........................................................................................................
   ............................................................................................................................................................
   ............................................................................................................................................................
   POINTS AT WHICH THE APPARATUS HAS BEEN ISOLATED AND WHERE CAUTION
   NOTICES HAVE BEEN POSTED:
   ............................................................................................................................................................
   ............................................................................................................................................................
   DANGER NOTICES POSTED AT: ..................................................................................................
   CIRCUIT MAIN EARTHS APPLIED AT: .......................................................................................
   ............................................................................................................................................................
   ............................................................................................................................................................
   SET NUMBER OF ADDITIONAL EARTHS ISSUED: ..................................................................
   KEY SAFES/SAFETY PADLOCK NOS: ........................................................................................
   OTHER PRECAUTIONS: .................................................................................................................
     ..........................................................................................................................................................
       SIGNED ........................................... TIME .................................................. DATE.........................................
               *SENIOR AUTHORISED/AUTHORISED ELECTRICAL PERSON
       ISSUED WITH THE AGREEMENT OF .............................................................................................................. (CONTROL PERSON)

 2. RECEIPT
       I accept responsibility for carrying out the work on the APPARATUS detailed on this
       ELECTRICAL PERMIT-TO-WORK and no attempt will be made by me or persons under my
       charge to work on any other APPARATUS.

       SIGNED ........................................... TIME .................................................. DATE.........................................
                    COMPETENT ELECTRICAL PERSON

 3. CLEARANCE
       All persons under my charge have now been withdrawn and warned that it is no longer safe to
       work on the APPARATUS detailed on this ELECTRICAL PERMIT-TO-WORK.
       ALL ADDITIONAL EARTHS have been removed.
       The Work is *COMPLETE/INCOMPLETE
       SIGNED ........................................... TIME .................................................. DATE.........................................
                    COMPETENT ELECTRICAL PERSON

 4     CANCELLATION
       This ELECTRICAL PERMIT-TO-WORK is cancelled.
       SIGNED ........................................... TIME .................................................. DATE.........................................
                    *SENIOR AUTHORISED/AUTHORISED ELECTRICAL PERSON

       CANCELLATION NOTIFIED TO ....................................................................................................................... (CONTROL PERSON)
*Delete word not applicable
 APPENDIX C - SANCTION FOR TEST
                                                                                                                               No.
                            Petroleum Development Oman LLC
                            SANCTION-FOR-TEST
WORK PERMIT No:                                          LOCATION:                                              WORK SITE:
1. ISSUE
   TO ......................................................................................................................................................
   The following APPARATUS has been made safe in accordance with the PDO ELECTRICAL
   SAFETY RULES for the testing detailed on this SANCTION FOR TEST to proceed:-
   APPARATUS: ...................................................................................................................................
   ............................................................................................................................................................
   ............................................................................................................................................................
   TESTING TO BE CARRIED OUT: ..................................................................................................
   ............................................................................................................................................................
   ............................................................................................................................................................
   POINTS AT WHICH THE APPARATUS IS ISOLATED AND CAUTION NOTICES POSTED:
   ............................................................................................................................................................
   ............................................................................................................................................................
   DANGER NOTICES POSTED AT: ..................................................................................................
       CIRCUIT MAIN EARTHS APPLIED AT: .......................................................................................
       (THESE MAY BE REMOVED AND REPLACED UNDER THIS SANCTION-FOR-TEST)

       ............................................................................................................................................................
       ............................................................................................................................................................
       SET NUMBER OF ADDITIONAL EARTHS ISSUED: ..................................................................
       KEY SAFES/SAFETY PADLOCK NOS: ........................................................................................
        ...............................................................................................................................................
       SIGNED ......................................... TIME ...................................................... DATE .......................................
                    SENIOR AUTHORISED ELECTRICAL PERSON
       ISSUED WITH AGREEMENT OF .................................................................................................... (CONTROL PERSON)

 2. RECEIPT
       I accept responsibility for the testing of the APPARATUS detailed on this SANCTION-TO-
       TEST and for taking precautions to prevent danger.
       SIGNED ......................................... TIME ...................................................... DATE .......................................
                    AUTHORISED ELECTRICAL PERSON

 3. CLEARANCE
       All persons under my charge have now been withdrawn and warned that it is no longer safe to
       work on the APPARATUS detailed on this SANCTION-FOR-TEST.
       ALL ADDITIONAL EARTHS have been removed.
       The testing is *COMPLETE/INCOMPLETE
       The operational state of the apparatus is the same as at the time of this issue of this SANCTION
       FOR TEST apart from the exceptions noted below.
       Exception (if none, state none)
       SIGNED ......................................... TIME ...................................................... DATE .......................................
                    AUTHORISED ELECTRICAL PERSON

 4 CANCELLATION
       This SANCTION-FOR-TEST is now cancelled.
       SIGNED ......................................... TIME                                                         DATE .......................................
                    SENIOR AUTHORISED ELECTRICAL PERSON
       CANCELLATION AND OPERATIONAL STATE NOTIFIED TO ........................................................ (CONTROL PERSON)
APPENDIX D - LIMITATION OF ACCESS
                                                                                                                             No.
                         Petroleum Development Oman LLC
                         LIMITATION-OF-ACCESS ELECTRICAL APPARATUS
WORK PERMIT No:                                           LOCATION:                                              WORK SITE:
1. ISSUE
    TO ......................................................................................................................................................
    Permission is given to carry out the work described below which is in the vicinity of LIVE
    conductor:-
    WORK LOCATION: .........................................................................................................................
    WORK TO BE DONE: ......................................................................................................................
    ............................................................................................................................................................
    ............................................................................................................................................................
    ............................................................................................................................................................
                                    NO OTHER WORK SHALL BE CARRIED OUT
    LIVE APPARATUS: .........................................................................................................................
    ............................................................................................................................................................
    ............................................................................................................................................................
    ............................................................................................................................................................
    SPECIAL PRECAUTION TAKEN:
    ............................................................................................................................................................
    ............................................................................................................................................................
    PRECAUTIONS THAT MUST BE TAKEN WHEN WORK IS CARRIED OUT:.........................
    ............................................................................................................................................................
    ............................................................................................................................................................
    ............................................................................................................................................................
    SAFETY PRECAUTIONS FOR WORK ON LOW VOLTAGE APPARATUS: ............................
    ............................................................................................................................................................
    ............................................................................................................................................................
    KEY SAFES/SAFETY PADLOCK NOS: ........................................................................................
    *(When applicable)

    ...............................................................................................................................
    SIGNED ......................................... TIME ...................................................... DATE .......................................
                 *SENIOR AUTHORISED/AUTHORISED ELECTRICAL PERSON

2. RECEIPT
    I accept responsibility for carrying out the work in accordance with this LIMITATION-OF-
    ACCESS and no other work will be done by me or the persons under my charge.
    SIGNED ......................................... TIME ...................................................... DATE .......................................
                 COMPETENT ELECTRICAL PERSON

3. CLEARANCE
    All persons under my charge have now been withdrawn and warned that it is no longer permitted
    to carry out work specified on this LIMITATION-OF-ACCESS
    SIGNED ......................................... TIME ...................................................... DATE .......................................
                 COMPETENT ELECTRICAL PERSON

4   CANCELLATION
    This LIMITATION OF ACCESS is now cancelled.
    SIGNED ......................................... TIME ...................................................... DATE .......................................
                 *SENIOR AUTHORISED/AUTHORISED ELECTRICAL PERSON
*Delete word not applicable
APPENDIX E1 – ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE
                                                                                                                                           No.
                            Petroleum Development Oman LLC
                            ELECTRICAL ISOLATION/DE-ISOLATION
                            CERTIFICATE
WORK PERMIT No:                                                  LOCATION:                                                    WORK SITE:

ISOLATION CERTIFICATE APPLIED FOR BY: .................................................................................
DEPARTMENT/SECTION: ....................................................................(REFERENCE INDICATOR)

1. PERMISSION IS GIVEN TO RELEASE THE FOLLOWING APPARATUS:
   EQUIPMENT/TAG No: ....................................................................................................................
   EQUIPMENT FUNCTION:...............................................................................................................

     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                   CUSTODIAN




1A. PERMISSION IS GIVEN TO A COMPETENT/AUTHORISED ELECTRICAL PERSON TO
    ISOLATE THE ABOVE APPARATUS

     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                   CUSTODIAN REPRESENTATIVE ON SITE




2    THE APPARATUS IS ISOLATED FROM:
     SAFETY PADLOCK Nos: ..................................................... AND CAUTION NOTICES HAVE
     BEEN APPLIED AT: .............................................................. ..........................................................
     KEY SAFE NO.(If applicable):
     FUSES REMOVED AND PLACE AT:

     SIGNED ......................................... TIME ...................................................... DATE .......................................
                   *COMPETENT/AUTHORISED ELECTRICAL PERSON




3    DE-ISOLATION APPLIED FOR BY:

     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                   COMPETENT ELECTRICAL PERSON




4    PERMISSION IS GIVEN TO: ...........................................................................................................
                                                                         *COMPETENT/AUTHORISED ELECTRICAL PERSON
     TO DE-ISOLATE THE APPARATUS DESCRIBED IN SECTION 1.

     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                   CUSTODIAN REPRESENTATIVE IN SITE




5    I CONFIRM THAT THE DE-ISOLATION REQUESTED IN SECTION 4 HAS BEEN
     COMPLETED AND CAUTION NOTICES & SAFETY PADLOCKS REMOVED.

     SIGNED ............................................... REFERENCE INDICATOR........................................... DATE ...................................................
               *COMPETENT/AUTHORISED ELECTRICAL PERSON
*Delete as applicable
APPENDIX E2 – ELECTRICAL ISOLATION / DE-ISOLATION CERTIFICATE ALLOWING
              RESTORATION OF MOTIVE POWER FOR ON LOAD CHECKS TO BE MADE
                                                                                                                           No.
                          Petroleum Development Oman LLC
                          ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE
                          ALLOWING RESTORATION OF MOTIVE POWER FOR ON-LOAD
                               CHECKS TO BE MADE
WORK PERMIT No:                                          LOCATION:                                              WORK SITE:

ISOLATION CERTIFICATE APPLIED FOR BY: .................................................................................
DEPARTMENT/SECTION: ....................................................................(REFERENCE INDICATOR)
NOTE:ONLY THE WORK PERMIT ALLOWING THIS WORK AND THE ON-LOAD CHECKS
SHALL BE ISSUED ON THIS APPARATUS IF MOTIVE POWER IS TO BE RESTORED

1. PERMISSION IS GIVEN TO RELEASE THE FOLLOWING APPARATUS:
   EQUIPMENT/TAG No: ....................................................................................................................
   EQUIPMENT FUNCTION:...............................................................................................................
     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                 CUSTODIAN

1A. PERMISSION IS GIVEN TO A COMPETENT/AUTHORISED ELECTRICAL PERSON TO
    ISOLATE THE ABOVE APPARATUS
    and when requested restore motive power on-load checks to be made.

     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                 CUSTODIAN REPRESENTATIVE ON SITE

2. THE APPARATUS IS ISOLATED FROM:
   And motive power shall only be restored for on-load checking purposes by the ELECTRICAL
   PERSON, who shall remain at the site and ensure that the apparatus is ISOLATED again before
   any further work is carried out on it.

     SAFETY PADLOCK Nos: ..................................................... AND CAUTION NOTICES HAVE
     BEEN APPLIED AT: .............................................................. ..........................................................
     KEY SAFE NO.(If applicable):
     FUSES REMOVED AND PLACE AT:

     SIGNED ......................................... TIME ...................................................... DATE .......................................
                 *COMPETENT/AUTHORISED ELECTRICAL PERSON

3    DE-ISOLATION APPLIED FOR BY:

     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                 COMPETENT ELECTRICAL PERSON


4    PERMISSION IS GIVEN TO: ...........................................................................................................
                                                                 COMPETENT/AUTHORISED ELECTRICAL PERSON
     TO DE-ISOLATE THE APPARATUS DESCRIBED IN SECTION 1.

     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                 CUSTODIAN REPRESENTATIVE IN SITE

5    I CONFIRM THAT THE DE-ISOLATION REQUESTED IN SECTION 4 HAS BEEN
     COMPLETED AND CAUTION NOTICES & SAFETY PADLOCKS REMOVED.

     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                 *COMPETENT/AUTHORISED ELECTRICAL PERSON

*Delete as applicable
APPENDIX E3 – ELECTRICAL IMMOBILISATION / MOBILISATION CERTIFICATE
                                                                                                                           No.
                          Petroleum Development Oman LLC
                          ELECTRICAL IMMOBILISATION / MOBILISATION
                               CERTIFICATE
WORK PERMIT No:                                          LOCATION:                                              WORK SITE:


Immobilisation Requested by                          Name:
                                                     Ref. Ind.:
                                                     Department:
                                                     Date:

1. Permission is given to an Appointed Person to Immobilise Equipment/ Tag No: .............................
     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                 OPERATION STAFF




2. The equipment is Immobilised from: .................................................................................................

     SAFETY LOCKED NOS: .................................................................................................................

     and CAUTION APPLIED NOTICES have been applied at ..............................................................

     KEY SAFE NO. .................................................................................................................................

     SIGNED ......................................... TIME ...................................................... DATE .......................................
                 APPOINTED PERSON




3    Return to service applied for by:

     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                 APPOINTED PERSON




4    Permission given to APPOINTED PERSON to return the equipment described in section 1 to
     normal service.


     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                 OPERATION STAFF




5    I confirm that the de-isolation requested in section 4 has been completed and CAUTION
     NOTICES and SAFETY PADLOCKS removed.


     SIGNED .................................. REFERENCE INDICATOR ......................... DATE .......................................
                 APPOINTED PERSON
                                                                                                                            White        Operation Staff
                                                                                                                            Blue         Appointed staff
                                                                                                                            Pink         Site Copy
MESC No: 93.55.17.0029
Electrical Safety Rules                                                Version 7.0

APPENDIX F – WORKING AND ACCESS CLEARANCE

1.0 The Working and Access Clearances given in the following Tables of this
    Appendix are derived from the SAFETY DISTANCES 'X' (Table 1) specified in
    Rule 5.6.1 with the addition of 'Application Factors' suitable for the particular
    activity to be undertaken in the vicinity of exposed LIVE HIGH VOLTAGE
    conductors.


2.0 Appendix F1 specifies the Working and Access Clearances for work on overhead
    line poles when work is to be undertaken with the conductors LIVE.
   (See Rule 2.3.6.4(a) and Rule 2.5.1.4).


3.0 Appendix F2 specifies the Working and Access Clearances for work in substations
    containing exposed LIVE HIGH VOLTAGE conductors.
   (See Rule 2.3.6.4(a) and Rule 2.5.5.1).


4.0 Appendix F3 specifies the Working and Access Clearances that Contractors
    should be using when carrying out HIGH VOLTAGE LIVE LINE WORK on
    PDO wood pole overhead lines. (See Rule 2.6.3[x]).


IMPORTANT NOTE
This Appendix has been produced and added to these Rules to give AUTHORISED
ELECTRICAL PERSONS operational guidance, when they are issuing
ELECTRICAL SAFETY DOCUMENTS, in the types of situations covered in
appendices F1, F2 and F3.


The Working and Access Clearance figures given should be used as a minimum
requirement, and should be increased if practicable in all such situations.


The importance of the AUTHORISED ELECTRICAL PERSONS understanding the
intention of Rule 2.3.6, and in particular Rule 2.3.6.4, is essential when using the
Clearances given in this Appendix F.




SP-1104                                                                29/02/2000
Version 7.0                                                    Electrical Safety Rules


APPENDIX F1

                   WORKING AND ACCESS CLEARANCES FOR WORK ON

                     OVERHEAD LINES CARRYING LIVE HIGH VOLTAGE

                               CONDUCTORS [Rule 5.6.4(a) & 7.1.4]




                                    X*                                              X*
       A                                               B


                                   0.3m                                             2.1m




                                                    WORKING
                                                    PLATFORM
   LIMIT
                                                    LEVEL
   MARKER




             LADDERS OR                                        POLE PLATFORM
            CLIMBING IRONS                                     OR SCAFFOLDING



   SAFETY DISTANCE = X*                                 SAFETY DISTANCE = X*
   APPLICATION FACTOR = 0.3m                            APPLICATION FACTOR = 2.1m
   A = X* + 0.3m                                        B = X* + 2.1m

             kV     A(m)                                        kV   A(m)
            33     1.1                                         33    2.9
             66     1.3                                         66   3.1
            132     1.7                                        132   3.5


  NOTE: for * see Rule 5.6.1




29/02/2000                                                                     SP-1104
Electrical Safety Rules                                                                Version 7.0


APPENDIX F2

                        WORKING AND ACCESS CLEARANCES FOR WORK IN

                    SUBSTATIONS CONTAINING EXPOSED LIVE HIGH VOLTAGE

                                     CONDUCTORS [Rule 5.6.4(a) & 7.5.1]


                                                  LIVE CONDUCTORS (if any)
                                                  OVER-RUNNING WORKZONE




                                                         X*


                                      B
                                                         2.1m
     LIVE                                                                                  LIVE




                 PLATFORM
                 LEVEL LIMIT
                 (within workzone)



                        C                                                    C

                        1.5m                                          1.5m

               X*                                                                     X*

                                          DEFINED WORKZONE


                                            ELEVATION

                                                                     NEAREST EXPOSED
                                                                     LIVE HV CONDUCTOR
 SAFETY DISTANCE = X*
 APPLICATION FACTOR (VERT.) = 2.1m
 APPLICATION FACTOR (HORZ.) = 1.5m                                               C
 B = X* + 2.1m & C = X* + 1.5m

                                                                       PERMISSIBLE
        kV      B(m)         C(m)
                                                                          LIMITS OF
        33        2.9          2.3                            C                               C
                                                                        WORKZONE
        66        3.1          2.5
       132        3.5          2.9
                                                                             PLAN
  NOTE: for * see Rule 5.6.1




SP-1104                                                                                29/02/2000
Version 7.0                                              Electrical Safety Rules


APPENDIX F3

                  WORKING AND ACCESS CLEARANCES FOR WORK ON

                     HIGH VOLTAGE LIVE LINE WORK [Rule 8.0]



                               X*                                             X*
      A                                        B

                           0.3m                                             2.1m




                                            WORKING
                          kV     A(m)       PLATFORM                  kV       B(m)
   LIMIT
                          33     1.1        LEVEL                     33       2.9
   MARKER
                          66     1.3                                  66       3.1
                         132     1.7                                 132       3.5



   LADDER OR CLIMBING IRON                 POLE PLATFORM OR SCAFFOLD

  SAFETY DISTANCE = X*                     SAFETY DISTANCE = X*
  APPLICATION FACTOR = 0.3m                APPLICATION FACTOR = 2.1m
  A = X* + 0.3m                            B = X* + 2.1m



                                                    X*                     HORZ. LIMIT
                                                             0.3m



                                                         A
                                    B



 SAFETY DISTANCE = X*
 APPLICATION FACTOR (HORZ.) = 0.3m                                  VERT. LIMIT

 APPLICATION FACTOR (VERT.) = 2.1m
 A = X* + 0.3m & B = X* + 2.1m

             kV   A(m)    B(m)
             33   1.1     2.9
             66   1.3     3.1
            132   1.7     3.5                        NOTE: for * see Rule 5.6.1

                    INDEPENDENT SCAFFOLD OR TOWERWAGON




29/02/2000                                                                   SP-1104
Electrical Safety Rules                                                                                                                                                                                                Version 7.0

APPENDIX G - CERTIFICATE OF APPOINTMENT



G-1)                  CERTIFICATE FOR AUTHORISED STAFF
                      To be used for SAEP, AEP(+), AEP, CESP, CEP and CP


                FRONT OF CERTIFICATE                                                                                                    BACK OF CERTIFICATE
                                                                                                                                                            Petroleum Development Oman
                                                                    Petroleum Development Oman                                                               Certificate of Authorisation
          space for
                                                                                                                                                            Electrical Personnel
            picture

         of authorised
                                                                                                                               ESR. No. ............ Level: ........................ Area: .......................................
             staff
                                                                                                                               Name: ............................................................................................................
                                                              Certificate of Authorisation
                                                                                                                               Coy. No./Coy: ................................................................................................
                                                            Electrical Personnel                                               Date of issue: ................................... Expiry: .............................................


  Level: ................................................................................................................
                                                                                                                               Authorising Signature: ...................................................................................
  Area: .................................................................................................................                                                                                     Name / Reference Indicator




G-2)             CERTIFICATE FOR APPOINTED PERSONS
                      To be used for AP


                FRONT OF CERTIFICATE                                                                                                    BACK OF CERTIFICATE
                                                                                                                                                                 Petroleum Development Oman
                                                                       Petroleum Development Oman                                                                 Certificate of Authorisation
             space for
                                                                                                                                                                      Appointed Person
               picture

           of authorised                                                                                                            ESR. No. ............ Level: ........................ Area: .......................................
                staff
                                                                                                                                    Name: ............................................................................................................
                                                                 Certificate of Authorisation
                                                                                                                                    Coy. No./Coy: ................................................................................................
                                                                  Appointed Person                                                  Date of issue: ................................... Expiry: .............................................


    Level: ................................................................................................................
                                                                                                                                   Authorising Signature: ...................................................................................
     Area: .................................................................................................................                                                                                        Name / reference indicator




SP-1104                                                                                                                                                                                                                29/02/2000
Version 7.0                                                         Electrical Safety Rules

SP USER-COMMENT FORM

SP User-Comment Form

If you find something that is incorrect, ambiguous or could be better in an SP, write your comments
and suggestions on this form. Send the form to the Document Control Section (DCS). They make a
record of your comment and send the form to the correct CFDH. The form has spaces for your
personal details. This lets DCS or the CFDH ask you about your comments and tell you about the
decision.

SP Details                Title                                          Issue Date:
Number:

Page number:              Heading Number:                                Figure Number:

Comments:




Suggestions:




User’s personal details
Name:                             Ref. Ind:            Signature:            Date:
                                                                             Phone:
Document Control Section Actions
Comment Number:                   Dates                                      CFDH
                                  Recd:               To CFDH:               Ref. Ind:

CFDH Actions
Recd         Decision:                                          Inits:       Ref.         Date:
Date:        Reject:                                                         Ind:
             Accept, revise at next issue:
             Accept, issue temporary amendment

Comments:




Originator           Date:         Inits:     Document Control              Date:        Inits:
Advised:                                      Section Advised:




29/02/2000                                                                               SP-1104

								
To top