PR 1947 Electrical Safety Rules PDF

 

RESTRIC TED RESTRICTED Oct-10 

Document ID: PR-1947  Key: Business Control

Petroleum Development Oman L.L.C.

Electrical Infrastructure

Electrical Safety Rules

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PR-1947 Electrical Safety Rules

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Docum ocume ent Aut uth hori orisati tio on Authorised Author ised For Issue: Oct. 2010

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Revision H Hiistory 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.

iii. iv. iv.

RELAT LATED B BU USINESS PR PROCESS RE RELA LAT TED CORP CORPOR ORA ATE MA MANA NAGE GEME MENT NT FR FRA AME WORK WORK (C (CMF MF)) DOCUMENTS CP-117 Project Engineering-CoP GU-323 Key Business Control Documentation Guidelines GU-290 Power System Asset management PR-1259 Infrastructure Management Procedure DEP 80.64.10.10-GEN 80.64.10.10-GEN Electrical Safety Rules (Shell) Th The e rela relate ted d CMF CMF Do Docu cume ment nts s can can be retr retriev ieved ed fr from om th the e Corp Corpor orat ate e Bu Busi sine ness ss Cont Contro roll Documentation in the Live Link, PDO Web site Code Business Process EP72

Maintenance and Assure Facilities Integrity

TABLE OF CONTENTS i Docu Docume ment nt Aut Autho hori risa sati tion on.. .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ....3 ..3 ii

Revi Revisi sion on Hist Histor ory. y... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ...4 .4

ii iii. i.

RELA RELAT TED B BUS USIN INES ESS S PROCE PROCESS SS.. .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ....4 ..4

iv.

RELATED CORPORATE M MA ANAGEMENT FRAME W WO ORK (C (CMF) DOCUMENTS 4

1

Intr Introd oduc ucti tion on.. .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ...7 .7

2

Glos Glossa sary ry.. .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ....8 ..8

Electrical Definitions.................................. Definitions.......................................................................... ................................................................... .................................. ............. ............. ......... 8 2.2

OTHER DEFIN DEFINITIONS... ITIONS.......... .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. ..................... ........................... ............. 14

2.3................................................................................................ 2.3....................................................... .............................................................................. ............................................ ............. ........ .. 15 PDO AREAS................................................................................................... AREAS.......................................................... ........................................................... ......................... ............. ........ .. 15 2.4

ABBREVIAT ABBREVIATIONS.. IONS......... .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. ...................... ............... 15

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PR-1947 Electrical Safety Rules

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PDO GENERI GENERIC C JOB TITLES TITLES & REFE REFERENC RENCE E INDICATO INDICATORS...... RS............. .............. .............. .............. .....................16 ..............16 3.

Gene Generral Req Require uireme ment nts. s... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ...17 .17

3.1

DUTY........ DUTY............... .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. ............... ............... .................... ............. 17

3.2

OBJECTIONS.. OBJECTIONS......... .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. ............... ............... .............. .............. ............. ...... 17

3.3

ISSUE OF OF ELECTRICA ELECTRICAL L SAFETY SAFETY RULES...... RULES............. .............. .............. .............. .............. .............. .............. ...................... ..................... ......17 17

3.4

DANGEROUS DANGEROUS OCCURR OCCURRENCES ENCES AND AND ACCIDEN ACCIDENTS....... TS.............. .............. .............. .............. .............. .............. .............. .............17 ......17

3.5

FAILURE FAILURE OF SUPPLY SUPPLY....... .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. ................. .......... 17

3.6

ADMITTA ADMITTANCE NCE TO STA STATIONS..... TIONS............ .............. .............. .............. .............. .............. .............. .............. .............. .................................. ............................. 17 4.

Au Auth thor oris isat atio ion n of of Ele Elect ctri rica call P Per erso sons ns an and d App ppoi oint nted ed Pers Person ons. s... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ...18 .18

4.1

GENERAL.. GENERAL......... .............. .............. .............. .............. .............. .............. ............... ............... .............. .............. .............. .............. .............. .............. .............. .............. ............ ..... 18

4.2

APPOINTMEN APPOINTMENT....... T............... ............... .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. ...................18 ............18

4.3

CERTIFIC CERTIFICAT ATE E OF APPOINTME APPOINTMENT....... NT.............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. ........... ....18 18 5.

Pr Proc oced edur ure es for Initi Initiat atio ion n of Wor Work. k... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ....1 ..19 9

5.1

ACCESS..... ACCESS............ .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. ..........................19 ...................19

5.2

SWITCHING PROCEDURE PROCEDURES....... S.............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............20 ......20

5.3 PRECAU PRECAUTIO TIONS NS TO BE TAKEN TAKEN BEFORE BEFORE WORKING WORKING ON OR TESTING TESTING HIGH VOLT VOLTAGE AGE  APPARATUS............................................  APPARAT US..................................................................................... ............................................................................. .......................................... ........... ..... 21 5. 5.4 4 PREC PRECAU AUTIO TIONS NS TO BE TAKE TAKEN N BEFOR BEFORE E WORKIN WORKING G ON OR TEST TESTING ING LOW VOL VOLTAGE  APPARATUS............................................  APPARAT US..................................................................................... ............................................................................. .......................................... ........... ..... 22 5.5

EARTHING EARTHING....... .............. .............. .............. .............. .............. .............. ............... ............... .............. .............. .............. .............. .............. .................................23 ..........................23

5. 5.6 6 APPR APPROA OACH CH TO EX EXPO POSE SED D LIVE LIVE HI HIGH GH VO VOL LTAGE COND CONDUC UCTO TORS RS OR IN INSU SULA LAT TOR ORS S SUPPORTING THEM................................................................................................ THEM........................................................... ............................................ ............. ............. ......... .. 24 5. 5.7 7 TEST TESTIN ING G OF HIGH HIGH VOL VOLTAGE APPA PPARAT RATUS BE BEFO FORE RE IT IS CO CONN NNEC ECTE TED D TO AN ELECTRICAL SYSTEM...................................................................................................................25 6.

Issu Issue e And Cont Contro roll Of El Elec ectr tric ical al Sa Safe fety ty Docu Docume ment nts. s... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ....2 ..27 7

6.1

INITIATIO INITIATION N OF DOCUMENTS. DOCUMENTS........ .............. .............. .............. .............. .............. .............. .............. .............. ............... ............... .......................27 ................27

6.2

PROCEDURE PROCEDURE FOR ISSUE AND RECEIPT..... RECEIPT............ .............. ............... ............... .............. .............. ..................................27 ...........................27

6.3

PRECAUTION PRECAUTIONS S DU DURING RING PROG PROGRESS RESS OF WORK........... WORK.................. .............. .............. .............. .............. .............. .................28 ..........28

6.4

PROCEDURE PROCEDURE FOR FOR CLEARANCE CLEARANCE AND AND CANCELLA CANCELLATIO TION....... N.............. .............. .............. .............. .............. ..................29 ...........29 7.

Pr Prec ecau auti tion ons s to be Taken ken on Sp Spec ecif ific ic It Item ems s of of App ppar arat atus us.. .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ....3 ..30 0

7.1

WORK ON ON O OVERHE VERHEAD AD LINES........ LINES............... .............. .............. .............. .............. .............. .............. .............. ........................... ............................. ......... 30

7.2

WORK ON UNDERGROU UNDERGROUND ND CABLES.. CABLES......... .............. .............. .............. .............. .............. .............. .............. ................... ...................... ..........32 32

7.3

WORK ON HIGH VOL VOLT TAGE AGE TRANSFO TRANSFORMERS.. RMERS......... .............. .............. .............. .............. ........................... .............................33 .........33

7.4

WORK ON HIGH HIGH VOLT VOLTAG AGE E SWITCHGEAR....... SWITCHGEAR.............. .............. .............. .............. .............. .............. ............... ............... ................33 .........33

7.5

WORK IN SUBST SUBSTA ATIONS TIONS WITH EXP EXPOSED OSED HIGH HIGH VOLT VOLTAG AGE E CONDUCTO CONDUCTORS............. RS...................34 ......34

7.6

WORK ON REMOTEL REMOTELY Y OR AUTOM AUTOMAT ATICAL ICALLY LY CONTROLL CONTROLLED ED HV APPAR APPARAT ATUS..... US................3 ...........34 4

7.7 WORK AND AND TESTING TESTING ON HV MOTOR MOTOR CIR CIRCUI CUITS TS (includ (includes es HV circuit circuits s with an LV LV motor motor,, eg. beam pump circuits)...................................................................................................................35 7.8

WORK ON ON L LOW OW VO VOLT LTAG AGE E SWITCHBOAR SWITCHBOARDS...... DS............. .............. .............. .............. ............... ..................................35 ..........................35

7.9

WORK ON HIGH VOLT VOLTAGE AGE STATIC STATIC CAPA CAPACITO CITORS.... RS........... .............. ............... ............... .............. ............................36 .....................36

7.10 Page 5

SWIT WITCHING, WO WOR RKING OR OR T TE ESTING IN IN HA HAZARDOUS AR AREAS.. ..................... ...3 .36 6 PR-1947 Electrical Safety Rules Printed 06/10/2010 The controlled version of this CMF Document resides online in Livelink®. Printed copies are  UNCONTROLLED.

 

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Live Live Line Line Work Workin ing. g... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ....37 ..37

8.1

GENERAL.. GENERAL......... .............. .............. .............. .............. .............. .............. ............... ............... .............. .............. .............. .............. .............. .............. .............. .............. ............ ..... 37

8.2

LIVE LINE LINE TOOLS TOOLS AND AND EQUI EQUIPMENT.. PMENT......... .............. .............. .............. .............. .............. .............. ............... ............... ........................37 .................37

8.3

SAFETY SAFETY PRECAUTIONS...... PRECAUTIONS............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. ....................37 .............37 9.

Live Live Line Line Wash Washin ing. g... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ..... .... ..... ...... ...... ..... 39

9.1

GENERAL.. GENERAL......... .............. .............. .............. .............. .............. .............. ............... ............... .............. .............. .............. .............. .............. .............. .............. .............. ............ ..... 39

9.2

LIVE LINE WASHING EQUIPMENT.... EQUIPMENT........... .............. .............. .............. .............. .............. .............. .............. ........................... .......................... ......39 39

9.3

SAFETY SAFETY PRECAUTIONS...... PRECAUTIONS............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. .............. ....................39 .............39 10 10..

USE USE OF APPO APPOIN INTE TED D PE PERS RSON ONS. S... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ...41 .41

10 10.1 .1

GENE GENERA RAL. L... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ....41 ..41

10 10.2 .2

SWITC SWITCHI HING NG DUTI DUTIES ES.. .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ...41 .41

10 10.3 .3

APPO APPOIN INTM TMEN ENT. T... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... ...41 .41

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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 associated LOW VOLTAGE VOLTAGE electrical systems. The Rules ar are e additional to the generally applicable safety requirements of the Company, specifically the Permit-to-Work System (PR1172) 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 shall be issued in accordance with PR-1948, ESOP ESOP 1. The The Rules Rules shall shall not not apply apply to thr three ee & singl single e phas phase e LOW LOW VOLT VOLTAGE AGE AP APPA PARA RATU TUS S inside workshops, worksho ps, laborato laboratories ries,, commercial, commercial, domestic domestic and similar building buildings s or to portabl portable e electric 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 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 OPERATIONAL PROCEDURES PROCEDURES (ESOP) PR–1948 (previously titled as SP-110 SP-1 108) 8) are issued by the Cor Corpor porate ate Func Functiona tionall Discipline Discipline Head Head Electrical Electrical to suppleme supplement nt these Rules and to define policies that assist in their implementation.  All copies of these PROCEDURES shall shall be issued in in accordance w with ith ESOP 1.

The ESRs forbid unauthorised  staff   staff to execute any electrical operational activity It is however acceptable that:1. Unauthor Unauthorised ised contract contractor or staff staff carry out out job-related job-related-tas -tasks, ks, for which no electric electrical al authorisation is required, whilst under the direct supervision of authorised staff. 2. Contract Contractor's or's equipment equipment is used used tto o execu execute te tthe he job. job. Such equipment shall comply with w ith the appropriate PDO HSE regulations.

.

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PR-1947 Electrical Safety Rules

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Glossary

Electrical Definitions For the purpose of these Electrical Safety Rules, the following definitions shall apply and where where used shall be prin used printed ted in capital capital lette letters. rs. The definitions definitions have been grouped grouped into categories categories dealing with specific specific aspects of electrical safety

2.1.1 2.1 .1 Genera Generall Termi Terminolo nology gy APPROVED Of a type or method sanctioned for use within PDO. (See Appendix Appendix A for method, device, reference documen documentt or stock reference) DANGER  A risk of bodily injury or loss of life or health from shock, burn, asphyxiation asphyxiation or other causes. causes. DEAD  At or about zero potential potential and disco disconnected nnected from any LIVE syste system. m. 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 applied to cond conductor uctors: s: all phases phases short circuit circuited ed and effectively connected connected to earth earth eitherr thro eithe through ugh switchg switchgear ear with ade adequa quately tely rate rated d EARTHING EARTHING capacity capacity or by APPROVE APPROVED D portable EARTHING leads or by any other APPROVED devices.

EXTRA LOW VOLTAGE (ELV) APPARATUS  Any apparatus, apparatus, equipment and conductor conductors s which are normally operated operated at a voltage not exceeding 50V AC.

HIGH VOLTAGE (HV) APPARATUS  Any apparatus, apparatus, equipment and conductor conductors s which are normally operated operated at a voltage exceeding 1000V AC. ISOLATED OR ISOLATION Disconnected Disconnec ted from LIVE APPAR APPARAT ATUS US and condu conductor ctors s by an open open disconn disconnecto ectorr or by an adequate physical gap. LIVE Electrically charged. LIVE LINE WASHING WASHING Washing of LIVE HIGH VOLTAGE insulators on overhead lines and substations with exposed conductors using APPROVED equipment and methods. Page 8

PR-1947 Electrical Safety Rules

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LIVE LINE WORK Work on LIVE HIGH VOLTAGE overhead exposed conductors and other APPARATUS using  APPROVED insulated tools tools and method methods. s.

LOW VOLTAGE (LV) APPARATUS  Any apparatus, apparatus, equipment equipment and conductor conductors s which are not EXTRA LOW VOLTAGE VOLTAGE  APPARAT  APPA RATUS US and whic which h normally operate at a voltage not excee exceeding ding 1000V AC.

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. SWITCHING The operation of circuit breakers, isolators, disconnectors, fuses or other methods of making or brea breakin king g an electr electrica icall circui circuitt and and/or /or the applicat application ion an and d removal removal of CIRCUI CIRCUIT T MAIN MAIN EARTHS and LV EARTHS. WORK IN A CONFINED SPACE Work in an enclosed area where 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. WORKING PARTY The persons under the direct supervision of a COMPETENT ELECTRICAL PERSON or an  AUTHORISED ELECTRICAL PERSON.

2.1.2 2.1 .2

Docum Document entati ation, on, Per Permit mits, s, Notic Notices es & Proced Procedur ures es 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)

EL ELEC ECTR TRIC ICAL AL PERM PERMIT IT-T -TOO-WOR WORK, K, SANC SANCTI TION ONSS-FO FORR-TE TEST ST,, LI LIMI MIT TATIO IONS NS-O -OFF ACCESS and

iii iii))

EL ELEC ECTR TRIC ICAL AL IS ISOL OLA ATIO ION/ N/DE DE-I -ISO SOLA LAT TIO ION N CERT CERTIF IFIC ICA ATES are all ELECTRICAL SAFETY DOCUMENTS.

CAUTION NOTICE  A notice in an APPROVED form attached to electrical APPA APPARAT RATUS US or its controls conveying a warning against interference with such APPARAT APPARATUS. US. These notices shall be attached to all points of ISOLATION from which APPARATUS can be made LIVE.

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CERTIFICATE CERTIFICAT E OF APPOINTMENT  A form of identification issued by th the e CFDH-E to appoint PDO (and n non-PDO) on-PDO) staff to a level of  electrical authorisation. authorisation. (see Appen Appendix dix G) DANGER NOTICE  A notice tointhe anDANGER APPROVED form reading 'DANGER' wording wording calling attention of approaching or interfering withwith suchany LIVEadditional APPARATUS. EARTHED NOTICE  A notice in an APPROVED APPROVED form reading 'EARTHED' 'EARTHED' that shall be used to identify APP APPARA ARATUS TUS that has been used to apply a CIRCUIT MAIN EARTH to a circuit

ELECTRICAL IMMOBILISATION / MOBILISATION CERTIFICATE  A form of instruction signed and issued issued by a responsib responsible le member of a Custodian Department 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 Appendix E-3). ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE  A form of instruction signed and issued issued by a responsib responsible le member of a Custodian Department Department to a suitably suitably authorised authorised ELECTRIC ELECTRICAL AL PERSON to ensure ensure the safe ISOLATIO ISOLATION N of electrical electrical circuits prior to non-electrical work by a third party. (See Appendix E-1).

ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE (allowing restoration restoration of moti motive ve power for on-load checks to be made)  A form of instruction signed and issued issued by a responsib responsible le member of a Custodian Department Department to a suitably suitably authorised authorised ELECTRIC ELECTRICAL AL PERSON to ensure ensure the safe ISOLATIO ISOLATION N of electrical 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 E2).

ELECTRICAL PERMIT-TO-WORK (EPTW)  A form of declaration signed and issued by an AUTHORISED ELECTRICAL PERSON to a COMP CO MPET ETEN ENT T ELEC ELECTR TRIC ICAL AL PERS PERSON ON in char charg ge of work work to be ca carr rrie ied d ou outt on an any y  APPARAT  APPA RATUS, US, for the purpo purpose se of making known to such person exactly what HIGH VOLTAGE VOLTAGE  APPARAT  APPA RATUS US is DEAD, IS ISOLAT OLATED ED from all LIVE conductors, has been discharged, discharged, connected to EARTH and on which it is safe to work. (see Appendix 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)   b)

apply apply a CIRC CIRCUIT UIT MAIN MAIN EART EARTH H to th the e HIGH HIGH VOL VOLT TAGE AGE side side of a trans transfor former mer feedi feeding ng the the LOW VOLTAGE APPARATUS or  apply apply an an LV LV E EAR ARTH TH to to th the e busb busbar ars s of a L LOW OW VOLT VOLTAGE AGE switc switchb hboar oard. d.

EXCAVA EXCAV ATION CERTIFICATE CERTIFI CATE Page 10

PR-1947 Electrical Safety Rules

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 A form of declaration endors endorsed ed by all relevant service departments departments and issued under the Permit-to-Work system to ensure that all undergrou underground nd services and power cables are identified and safe methods of excavation are followed. 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 vici vicinity nity of LIVE LIV E AP APP PARA ARO-WORK ATUS. TUS. AorLIMITA LIMIT ATION-OF-A IONOF-ACCE CCESS SSissh shall all applicabl be licable issue issued when when an ELECTRICA ELEC TRICAL L PERMIT-T PERM IT-TO-WORK SANCT SANCTION-FO ION-FOR-TEST R-TEST not app ed and when verbal instructions are not considered considered sufficient. (see A Appendix ppendix D).  A LIMITATION-OF-ACCESS 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 W ASHING procedures procedures are to be used.

PROCEDURES FOR APPOINTED PERSONS  An APPROVED procedure procedure describing activities activ ities which can be carried out by an APPOINTED PERSON. SANCTION-FOR-TEST (SFT)  A form of declaration signed and issued by a SENIOR AUTHORISED ELECTRICAL PERSON to an AUTHO AUTHORI RISE SED D EL ELEC ECTR TRIC ICAL AL PERS PERSON ON in char charge ge of te test stin ing g HI HIGH GH VOL VOLTAGE  APPARAT  APPA RATUS US for the purpose of making known to such person exactly what APPARA APPARATUS TUS is to be tested and the condition under which testing is to be performed. (see Appendix Appendix C). SWITCHGEAR OPERATING OPERATING PROCEDURES (SOP)  An APPROVED APPROVED procedure detailing detailing how to operate operate switchgear and and how to make it safe to work on. The proce procedure dure checked and and tested by consruction engineer engineer and app approved roved by document custodian and document document author before up loading to live link. SWITCHING PROGRAMM PROGRAMME E  An APPROVED schedu schedule le which lists in seque sequence nce the SWITCHING operations operations necessary 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-FORTEST. WORK PERMIT (The class A or B Permit-to-Work)  A form of declaration signed and issued issued by the custodian custodian of equipment or plant to the person in charge (Permit Holder) of a working party 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 shall state which other other certificates or permits are requir required ed prior to starting wor work k (eg. , ELECTRICAL PERMIT-TO PERMIT-TO-WORK). -WORK).

2.1.3 2.1 .3 Safety Safety Equ Equipm ipment ent ADDITIONAL EARTH  An earth of APPROVED type which is applied after the issue of an ELECTRICAL PERMIT-TOPERMIT-TOWORK or SANCTION-FOR-TEST (for example an EARTH applied at a point of work). Page 11

PR-1947 Electrical Safety Rules

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These These shal shalll be att attach ached ed or remov removed ed by (as (as a minimum minimum)) a COMPET COMPETENT ENT ELEC ELECTRI TRICAL CAL PERSON holding the ELECTRICAL PERMIT-TO PERMIT-TO-WORK. -WORK. When portable EARTHING EARTHING leads are used for this purpose, an APPROVED label shall be attached with the legend 'AE'.

CIRCUIT MAIN EARTH  An earth applied by an AUTHORISED ELECTRICAL PERSON prior to issue of an ELECTRICA ELEC TRICAL L PERMIT-TOPERMIT-TO-WORK WORK or SANCTION-F SANCTION-FOR-TE OR-TEST ST.. When portable portable EARTHING EARTHING leads are used for this purpose, an APPROVED label shall be attached with the legend 'CME'. KEY SAFE  An APPROVED device for the secure retention of all SAFETY PA PADLOCK DLOCK keys used to lock means of ISOLATION, EARTHING or other safety devices in accordance with these Rules. LV EARTH  An earth of an APPROVED design design that may be used on LOW VOLTAGE VOLTAGE APP APPARA ARATUS TUS when it is worked on under an ELECTRICAL PERMIT-TO-WORK. 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  APPARATUS  APPARAT US not subject to an ELECTRICAL SAFETY DOCUMEN DOCUMENT. T. This type of lock shall fit the ‘electrical’ master key system. 2.1. 2.1.4 4 Pe Pers rson ons s Refer to ESOP-3 Refer ESOP-3 (P (PR-1 R-194 948) 8) for pr proce ocedu dure res s on select selection ion,, tra traini ining ng,, as asse sessm ssmen entt and and appointment of Electrical Persons and Appointed Persons. 2

Electrical Person

4

 A person (PDO or non-PDO) who has been appointe appointed d by the CFDH-E to any of the electr ele ctrica icall autho authoris risati ation on levels levels define defined d below below in Rules Rules 2.1.4. 2.1.4.2/3 2/3/4/ /4/5/6 5/6.. ELECTR ELECTRICA ICAL L 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 St Staff) aff) - CEP  A person who has sufficient technical knowledge or experience to avoid DANGER and has been bee n appointe appointed d by the CFDHCFDH-E E to rece receive ive and complete ELECTRICA ELECTRICAL L ISOLATIO ISOLATION/DEN/DEISOLA ISO LATI TION ON CERTIF CERTIFICA ICATE TES S and and receiv receive e ELE ELECTR CTRICA ICAL L PERMIT PERMITS-T S-TOO-WORK WORK and and LIMITATIONS-OF-ACCESS. This person may carry out LV SWITCHING, but only on single circuits with no possibilities possibilities of  backfeeds. The CERTIFICATE OF APPOINTMENT shall state the section of the electrical system to which it applies

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Competent Electrical Electrical Switching Person (PDO Staff) - CESP

43

 A COMPETENT ELECTRICAL PERSON who has been appointed appointed in writing by the t he CFDH-E to carry out LV SWITCHING, including LV switchboards with possible backfeeds from main income inc omers rs or bus bus cou couple plers, rs, but but exc exclud luding ing LV swi switch tchboa board rds s wit with h income incomers rs from the HV system. For Electrical Te Technician shoul should d have complete at least 6 month perio period d of CEP The CERTIFICATE OF APPOINTMENT shall state the section of the electrical system to which it applies 2

Authorised Electrical Person (PDO Staff)- AEP

44

 A COMPETENT ELECTRICAL SWITCHING PERSON who has has been appointed appointed in writing by the CFDH-E to carry out HV and LV SWITCHING, issue and cancellation of ELECTRICAL PERMITS-TO-WORK, LIMITA LIMITATIONS-OF-ACCESS TIONS-OF-ACCESS and receive SANCTIONS-FOR-TEST. SANCTIONS-FOR-TEST. Electrical Technision should Technision  should have completed one year period of CESP experiance and minimum of 10 switching program. program. Electrical Engineer   who have have one year peri period od of CEP experianc experiance e and minimum of10 switching program Electrical Sumesible Electrical Sumesible Pump Engi Engineer neer approved approved and certified by ESP company company can be appointed derect to AEP AEP for defined electrical boundaries. boundaries. The CERTIFICATE OF APPOINTMENT shall state the section of the electrical system to which it applies 2

Senior Authorised Electrical Person (PDO Staff)-SAEP Staff)-SAEP

45

 An AUTHORISED ELECTRICAL PERSON who has be been en appointed appointed in writing by the CFDHE to carry carry out out HV and and LV SWITC SWITCHIN HING, G, the issue issue an and d cancel cancellati lation on of ELECTR ELECTRICA ICAL L PERMITS-TO-WORK, SANCTIONS-FOR-TEST and LIMITA LIMITATIONS-OF-ACCE TIONS-OF-ACCESS. SS. 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 2

  Control Per Person son (PDO Staff)-CP

46

 A SENIOR AUTHORISED ELECTRICAL PERSON who has been appointed in writing by the CFD CFDH-E H-E to manag manage e a sec sectio tion n of the ele electr ctrical ical sy syste stem m withi within n de define fined d electr electrica icall 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) powerstations) or 

b)

The most senior ELECTRICAL PERSON in a PDO Area (particularly applicable to  Area Operations Operations Electrical Supervisor positions) positions) or 

c)

Heads of Utility The CERTIFICA CERTIFICATE TE OF APPOINTME APPOINTMENT NT shall shall state state the section of the electrical electrical system for which the appointment applies.

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PR-1947 Electrical Safety Rules

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Non-PDO Staff Electrical Persons

47

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 knowledg e or experience, commensurate with the level of authorisation requested, 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 CERTIFICATE OF APPOINTMENT shall state that tthe he 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

Appointed Person (PDO and Non-PDO Staff)

48

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

2.2 2.2

OT OTHE HER RD DEF EFIINIT ITIO IONS NS Note:

See also subsections 2.3, 2.4 and 2.5

  (The) Company

Petroleum Development Oman LLC of Muscat, Sultanate of Oman  A party to a Contract with The Company who is responsible responsible for  providing design, engineering, and other related consultancy services under a Contract.  A party to a Contract with The Company responsible for maintenance, constr con struct uction ion and other other relate related d works works specifi specified ed in a Contra Contract. ct. On occasion, for example in 'turnkey, EMC or EPC contracts', a contractor  may be responsible for the duties of both Consultant and Contractor. Supervision by a person suitably authorised for that function, who is continuously present at the work site to personally supervise the work without intermediaries. The word 'may' is to be understood as indicating a possible course of  action. The word 'shall' is to be understood as mandatory. The word 'should' is to be understood as strongly recommended.  A specified enginee engineerr or Consultant Consultant who applies these standards in the execution of a PDO project.

2. 3

PDO AREAS The following (operational) Areas Areas curre currently ntly exist in PDO, with electrical staff in place:

Coastal Areas: Areas:

Mina Al Fa Fahal

Northern Areas: Areas: Le Lekh khwa wair ir (L) (L) Yibal (Y), including Al-Huwaisah Page 14

Fahud (F), including Natih, Nahada PR-1947 Electrical Safety Rules

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Qarn Qa rn Alam Alam (Q (Q), ), incl includ udin ing g Sa Saih ih Ni Niha hayd yda, a, Sa Saih ih Rawl Rawl,, Bari Barik, k, Musa Musall llim, im, Mabrouk Southern Areas: Marmul (M), including Birba, Harweel, Haima West Nimr (N), including Amal, Amin, Runib Rima (R) and Bahja (B), (B), including including Sayyala, Suwaiha Suwaihat, t, Anzauz, Anzauz, Hubara Hubara,, Mukhaizna Note:   APP Note: APPROVED ROVED Interface Interface procedure procedures s between between PDO operatio operational nal areas and third third par party ty distributi distr ibution on systems systems or points of supp supply ly i.e. OETC, OPWP,O OPWP,ORPC, RPC, MEDC, MEDC, MZEC, MZEC, RAEC, ROP, MOD can be found in ESOP 9.

2.4 2.4

ABB BBRE REV VIAT IATIO IONS NS  AE

Additional Earth

 AP

Appointed Person Person

 AEP

Authorised Authorised Electrical Person

CEP

Competent E Ellectrical Pe Person

CESP CE SP

Co Comp mpet eten entt Elec Electr trica icall Sw Switc itchi hing ng Pe Pers rson on

CFDH-E CFDH -E Corpor Corporate ate Func Functiona tionall Disciplin Discipline e Head Elect Electrical rical CME Circuit Main Earth CofA

Certific ficate of Appointm tme ent

CP

Control Person

ELV

Extra Low Voltage

EMC

Eng ngiinee neering ing Mai Maint nte enance nce C Co ontr ntract

EPC

Eng ngiinee neer, P Prrocu ocure & C Co onstr struct uct co con ntr trac actt

ESB

Electrical Safety Bulletin

ESOP ES OP

Elec Electr tric ical al Safe Safety ty O Ope pera rati tion onal al Pro Proce cedu dure re

ESP

Electrical S Su umessible Pump

ESR

Electrical S Sa afety Rules

HV IEC

High Voltage International Electr triica call Committ mitte ee

LLW

Live Line W ork

LL Washing

Live L Liine Washing

LV

Low Voltage

PDO

Petroleum Devel evelo opme men nt Om Oman L LL LC

SAEP SA EP

Se Seni nior or A Aut utho hori rise sed d El Elec ectr tric ical al Pe Pers rson on

SAP

Sys yste tems ms,, Applica licati tio ons and Pro Product cts s

SOP

Switch itchg gear Opera erating ting Pro Procedur edure es

SRD

Safety Re Reference Document

OETC

Oman Electricity Transmission Transmission Company SAOG

OPWP

Oman Oman Po Powe werr a and nd Water Water Proc Procur ureme ement nt Comp Company any SAOG SAOG

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PR-1947 Electrical Safety Rules

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2.5

ORPC OR PC

Oman Oman P Pow ower er ans ans Wat Water er Procur Procureme ement nt Compan Company y SAOG SAOG

MEDC ME DC

Musc Muscat at El Elec ectr tric icity ity Dist Distri ribu buti tion on Co Comp mpan any y SAOG SAOG

MOD

Ministry Of Deffence

 MZEC  MZ EC

Mazo Mazoon on Elec Electr trici icity ty Com Compa pany ny SAOG SAOG

 RAEC  RAE C

Rura Rurall A Are reas as Ele Electr ctrici icity ty Co Comp mpan any y SAOG SAOG

 ROP

Royal Oman Police

Effective:-Oct 10

PDO G GEN ENER ERIC IC JO JOB B TITLE TITLES S & REFE REFEREN RENCE CE IN INDIC DICA ATORS For the purpose of this document the following generic job titles are defined, along with the current reference indicator(s). PDO GENERIC JOB TITLE   Corporate Functional Discipline Head Electrical Head ead of of P Po ower sy system tem Op Ops & Maint. int.

REFERENCE INDICATOR UIE, UIE, In Infr fras astr truc uctu ture re Manager

Pow Power

Syst System em

UIE UIE/3 (UEE EE))

 Facilitie  Facili ties s & Busi Busine ness ss Sup Suppo port rt Man Manag ager er Hea He ad of Pr Prod oduc ucti tion on Flow Flow Asset sset Team

UIB UIB ON ONO, O, OSO OSO

 Area Head of Production Flow Asset Team

ONO/1F, ONO/1L, ONO/1Y, ONO/1Q

Hea He ad Mai Maint nten enan ance ce Fa Faci cili liti ties es up upgr gra ade

Dept Dept..

OSO/1B, OSO/1M, OSO/1N, UIB/ UIB/1 1

 Area Electrical Supervisor

ONO/42F,ON ONO/42F,ONO/42L,ONO/42Y O/42L,ONO/42Y,ONO ,ONO/42Q, /42Q, OSO/42B, OSO/42N, OSO/42M, UIB/12

 A  Arrea Electrical Staff

Staff reporting to an Area Electrical Supervisor  

 Area  Ar ea Bu Busi sine ness ss Se Serv rvice ice co-o co-ord rdin inat ator or

ONO/ ONO/8F 8F,, ONO/ ONO/8L 8L,, ONO ONO/8 /8Y Y, ONO/ ONO/8Q 8Q,, OSO/ OS O/8B 8B,, OSO/ OSO/81 81N, N, OSO/81C

OSO/ OSO/81 81M, M,

OSO/ OSO/81 81B, B,

 

Page 16

PR-1947 Electrical Safety Rules

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3. Gene Genera rall Re Requ quir irem emen ents ts 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 themselves or others. Contravention of these Rules Rules shall constitute miscondu misconduct. ct. Any person person (whether (whether PDO or nonPDO staff ) who contravenes these Rules shall be liable to dismissal or be otherwise dealt with in accordance with Personnel Disciplinary procedures.

3. 2

OBJECT CTIIONS  Any person objecting on operation operational al or safety groun grounds ds 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 person shall then have the matter investigated investigated and if necess necessary ary referred referred to a higher  authority for a decision before proceeding.

3.3

IS ISSUE SUE OF E ELEC LECTRI TRICA CAL L SA SAFET FETY Y RUL RULES ES  A copy of these Rules shall be issued issued to PDO employ employees ees and to empl employees oyees of PDO contractors contractors and sub-contr sub-contractors, actors, involved in the operation of of or work o on n PDO electrical systems. systems. Each employee shall sign a receipt receipt for their copy which shall be kept in good condition. The method of issue shall be in accordanc accordance e with ESOP-1.

3.4

DA DANGE NGEROU ROUS S OCC OCCURR URRENC ENCES ES A AND ND A ACCI CCIDEN DENTS TS  All danger dangerous ous occurrences occurrences and electrical accidents shall be reported reported immediately to a CP who shall report in accordance with an APPROVED procedure.

3. 3.5 5

FAILUR ILURE E OF SU SUPP PPL LY  A failure of supply, 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 The CP shall shall report report any any ser serio ious us interr interrup uptio tion n invo involving lving a lar large ge pa part rt of the facilities facilities or an important single consumer in accordan accordance ce with procedure PR – 1353 ( Follow- up procedure for  Electrical Faults and Equipment Failure – PR -1353 ). During failure of supply, all APPARATUS, conductors and equipment shall be considered LIVE, until ISOLATED and proved DEAD.

3.6 ADM DMITT ITTA ANC NCE E TO S ST TATIO IONS NS No person shall, without authority, authority, enter any power station or substation premises belonging to or under under the control control of PDO. PDO. All All suc such h sta statio tions ns shal shalll be kept secure secured d with with STAN STANDAR DARD D ELECTRICAL LOCKS when unattended.

Page 17

PR-1947 Electrical Safety Rules

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4. Autho Authorisa risatio tion n of Electrical Electrical Person Persons s and Appoi Appointed nted P Person ersons s 4. 1

GENERAL The authorisation of staff to SAEP, AEP, CESP, CEP, CP and AP operating and working under  the scope of these Rules shall shall follow the definitions given in Rule 2.1.4.

4. 2

APPOINT NTM MENT The method of training, assessing and subsequent appointing of such PERSONS is detailed in ESOP 3.

4.3 CE CERT RTIF IFICA ICAT TE OF A APP PPOI OINT NTME MENT NT 4.3.1

 A CofA shall shall be given to all ELECTRICAL PERSONS and 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 undertake the role of CP for a section of  the electrical system within defined electrical boundaries in a specific PDO Area.

Page 18

PR-1947 Electrical Safety Rules

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5. Proce Procedur dures es ffor or In Init itia iatio tion n of Wor Work k 5. 1

ACCESS

5.1.1 Access Access To High Voltage Voltage Enclosures And Appar Apparatus atus Barriers Barr iers (incl (including uding plates on access access ladders) ladders) restricti restricting ng access access to enclosur enclosures es or cubicles cubicles containing LIVE HV conductors 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 shutte shutters rs shall be locked shut. In case of possible possible backfeed also the feeder  shutters shall be locked shut. shut. If the design of switch gear gear does not have this locking facility, other precautions precautions to prevent DANGER shall be taken (e.g. padlocking of cubicle doors). doors). NOTE: Possible ba backfeed ckfeed exists in case of ring circuit and multiple radial feede feeders! rs!

5.1.2 5.1. 2 Acces Access s to Underground Underground Chamber Chambers s or Cellars In ac acco cord rdan ance ce wi with th PD PDO O po poli licy cy a WOR WORK K PERM PERMIT IT is al alwa ways ys re requ quir ired ed for WORK WORK IN A CONFINED SPACE. SPACE. No person shall shall therefore enter any underg underground round chamber chamber or cellar until the requirements of the Permit-to-Work System for entry into a CONFINED SPACE have been implemented.

5.1.3 5.1. 3 Climbing of Towe Towers rs an and d Gantrie Gantries s 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-TOWORK, SANCTION-FOR-TEST or LIMITATION-OF-ACCES LIMITATION-OF-ACCESS. S.

5.1.4 5.1 .4 Climbing Climbing o on n Wo Wood od Poles Poles Before any pole is climbed, it shall be sounded. sounded. No pole badly impaired by decay 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 shall climb any pole supporting LIVE HV conductors except in accordance with Rule 7.1.4.

5. 5.2 2

SW SWIT ITCH CHIN ING GP PRO ROCE CEDU DURE RES S

5.2. 5.2.1 1 Gene Genera rall 5.2.1.1 No HV SWITCHING SW ITCHING shall be carried out without the agreement of the t he CP responsible responsible for that section of the electrical system. Page 19 PR-1947 Electrical Safety Rules Printed 06/10/2010 The controlled version of this CMF Document resides online in Livelink®. Printed copies are  UNCONTROLLED.

 

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5.2.1.2 In norma normall circum circumsta stance nces s all HV SWITCHIN SWITCHING G sh shall all be carried carried out only after after a wr writte itten n  APPROVED SWITCHING PROGRAMME has been agreed. 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 S SWITCHING WITCHING shall be repor reported ted to the CP as soon as possible after each operation or  at an agreed stage stage of a SW SWITCHING ITCHING PROGRAMME. 5.2.1.4 Th The e remo remote te open openin ing g and clos closin ing g of HV ci circ rcui uitt break reaker ers s may may be ca carr rrie ied d ou outt by unaccompanied suitably authorised operators.  All other HV SWITCHING shall be carried out by an AEP who shall be accompanied during the SWITCHING SWITCHING oper operati ation ons. s. (S (See ee also Rule 5.5.2 5.5.2.2 .2 when when applyin applying g CIRCUI CIRCUIT T MAIN EARTHS). 5.2.1.5 When ope operati rating ng pole mounted mounted swi switchg tchgear ear by mechanica mechanicall means means from ground 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 operation.. 5.2.2 5.2. 2 Switching Switching A Acros cross s Electrica Electricall Boundaries 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 concerne d and the SWITCHING SW ITCHING shall be recorded by all parties. When Whe n te tele leph phon one e or radi radio o mess messag ages es are are be bein ing g us used ed be betw twee een n CP's CP's to co-o co-ord rdin inat ate e SWITCHING PROGRAMM PROGRAMMES ES between between differen differentt specified specified sections sections of electrical electrical systems, 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. 5.2.3 5.2. 3 Switching Switching Under Under Emergenc Emergency y Cond Conditions itions In all cas cases es when emerge emergency ncy SWITCHIN SWITCHING G has has be been en carrie carried d ou outt to avoid avoid DANGER 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

PRE PRECA CAUTIO UTIONS NS TO BE T TA AKEN BE BEFOR FORE E WOR WORKI KING NG ON OR TEST TESTING ING HI HIGH GH VOLTAGE APPARATUS No person shall undertake any repairs, maintenance, alterations, cleaning or testing on HV  APPARATUS  APPARAT US until such parts of that A APPA PPARAT RATUS US 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 PADL ISOLATED PADLOCKS OCKS from all points of  supply sup ply,, inclu including ding whe where re pra practica cticable ble voltage voltage and auxiliary transform transformers, ers, common 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.

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The keys for the SAFETY PADLOCKS shall be placed in a KEY SAFE or another   APPROVED security method shall shall be used. used. (c)

Conn Co nnect ected ed to EARTH EARTH at all point points s of di disco sconn nnect ection ion from HV su supp pplie lies s to su such ch  APPARATUS  APPARAT US or betwee between n such po points ints and the po points ints 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 person receiving receiving the ELEC ELECTRICA TRICAL L PERMIT-T PERMIT-TO-WORK O-WORK or SANCTION-F SANCTION-FORORTEST is made fully awar aware e of the nature and extent of the work or testing to be done. It is the duty duty of the pers person on issui issuing ng the ELECTRIC ELECTRICAL AL PER PERMIT MIT-T -TOO-WORK WORK or  SANCTION-FOR-TEST to ensure that these provisions are complied with.  Any work on LIVE HV conductors 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.

5.4

PRE PRECA CAUTIO UTIONS NS TO BE T TA AKEN BE BEFOR FORE E WORK WORKING ING ON OR TE TESTI STING NG 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 ISOLATE D from f rom all pos possibl sible e points of sup supply ply.. The ISOLAT ISOLATION ION shall normally be carried out by opening circuit breaker breakers/switches s/switches and by removing fuses or links. The operati operating ng handles handles of these these circu circuit it breaker breakers/sw s/switche itches s shall shall have been, been, where where practicable, locked in the 'open' position with SAFETY PADLOCKS or similar type locking devices and CAUTION NOTICES attached attached at all points of ISOLA ISOLATION. TION. (see NOTE).

(c)

Page 21

Screened where necessary to prevent DANGER, and DANGER NOTICES attached to draw attention to LIVE APPARATUS near to the point of work.

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(d)

Proved DEAD with an APPROVED Proved APPROVED voltage testing testing device suitable suitable for the rated voltage of the circuit. The voltage testing device shall be checked checked before before and 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 lock ing or if SAFETY SAFETY PADLOC PADLOCKS KS cannot cannot be applied, applied, and the circuit circuit cann cannot ot 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  APPARAT  APPA RATUS US and conductor conductors s when it has been nec necessary essary to apply a CIRCUIT MAIN EART EARTH H to the ISOLAT ISOLATED ED HV winding windings s of the transformer transformer feedi feeding ng the LV windings windings and connections connections (including incoming switchboard units) or when an LV EARTH is applied to the LV switchboard busbars. When such an ELECTRICAL PERMIT-TO-WORK PERMIT-TO-WORK is issued to a CEP, 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 required for testing are proper properly ly 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. 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. 5.5.1 1 Gene Genera rall No HV EARTHING switch shall be operated or CIRCUIT MAIN EARTH connected or removed except with the agreement of the CP.

5.5.2 5.5 .2 High Vo Volta ltage ge Earthin Earthing g 5.5.2.1  All phases of the HV APPARA APPARATUS TUS shall be tested with with an APPRO APPROVED VED 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 adopted including:Page 22

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(a)

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 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 afterw afterwards. ards. After closing, the circuit breaker  shall be locked in the EARTH EARTH position. An EARTHED 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 equipment to all phase condu conductors. ctors. If this this met metho hod d of usi using ng porta portable ble EAR EARTHI THING NG leads leads is to be us used ed,, th the e followi following ng sequence of procedures shall be carried.out:(i) (i)

Chec Check k ttha hatt the the circ circui uitt to to b be e EA EAR RTH THED ED is IS ISOL OLA ATED. ED.

(ii) (ii)

Ensu Ensurre th that at e eac ach h pha phase se of tthe he cir circu cuit it is DEA DEAD D (o (onl nly y an HV HV test testin ing g devi device ce suitable for the rated voltage of the circuit shall be used) used).. The APPROVED voltage testing device shall be checked before and after  use to check it is functioning correctly.

(iii) (iii)

Ex Exam amin ine e the p por orta tabl ble e EAR EARTH THIN ING G leads leads pri prior or to use use to to ensu ensure re tha thatt they they are are in good condition.

(iv) iv)

Connect the the portabl table e EAR EARTHI HING NG le lea ads to the EAR EARTH sy sys ste tem m bef efor ore e securing them to the phase conductor conductors. s. Care must be taken to ensure ensure that good contact is made.

(v) (v)

EART EARTH H an and ds sho hort rt c cir ircu cuit it a all ll ph phas ases es ev even en ifif work work is is to be car carri ried ed out out on on one one phase only. and

(vi) (vi)

When When removi removing ng po port rtab able le EA EART RTHI HING NG lead leads s disc discon onne nect ct them them from from the the phas phase e conductors first and the EARTH system last.

NOTE: 1

When When po port rtab able le EA EART RTHI HING NG le lead ads s ar are e us used ed as CIRC CIRCUI UIT T MAIN 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 5.5. 2.2 ACCOMP ACCOMPA ANIED S SWITCHING WITCHING 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 carrying out this SW ITCHING shall be accompanied by a CEP. CEP.

5.5. 5.5.3 3

Lo Low w Vo Voltag ltage e Ea Eart rthi hing ng

5.5.3.1  Any LV EARTH applied on DEAD LV switchboards shall be in accordance 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. EAR THS. If thes these e EART EARTHING HING devices are are used the then n all phases phases and and neutral neutral of the LV  APPARAT  APPA RATUS US shall first be tested with an APPROVED voltage testing device. (Only an LV testing device shall be used). used). The voltage testing device shall be checked before before and after  use. Page 23

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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. 5.6 6

APP PPRO ROA ACH TO EXP XPOS OSED ED LI LIVE VE HI HIGH GH VO VOL LTAGE CO COND NDUC UCTO TORS RS OR INSULATORS SUPPORTING THEM

5.6 .6..1

Saf Safet ety y Dis Disttance nces (a) The SAFETY DISTANCE (designated ( designated 'X' in Table 1 and Diagram 1 of page 26&27) shall be maintained at the respective system voltages voltage s bet betwe ween en any part part of the pers person on or object object an and d the neares nearestt LIVE 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 5.6 .2 Appro Approach ach of Per Person sons s (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-TOWORK or SANCTION-FOR-TEST has been issued.

(b)

When a person is applying an APPROVED voltage testing device or phasing device to HV conductor conductors s cont containe ained d withi within n metal enclose enclosed d switchge switchgear, ar, it is allowab allowable le 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 5.6. 3 Te Testing sting of Condu Conductors ctors (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 obje cts which shal shalll app approa roach ch them or the insulators insulators supporting supporting them, within within the SAFETY DISTANCES specified in Rule 5.6.1 shall be APPROVED voltage testing devices.

5.6.4 5.6. 4 Work Work Near Live Conductors 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 ELECTRICA ELECTRICAL L PERM PERMIT-T IT-TO-WORK O-WORK or SANCTION-F SANCTION-FOR-TE OR-TEST ST is issued issued for  adjacent APPARATUS, then the AEP shall issue a LIMITATION-OF-ACCESS to the CEP in charge charge of the work, specifyi specifying ng how the SAFETY DISTANCES DISTANCES from LIVE conductors shall be maintained during the course of the work.

NOTE:

 APPENDIX F gives guidanc guidance e on the application of Rule 5.6 to various operational operational situations.

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5.7

Effective:-Oct 10

TESTING OF H HIGH IGH VOL VOLT TAGE A APPA PPARA RATU TUS S BEFOR BEFORE E IT IS CONN CONNECTED ECTED T TO O 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 ap appl plyi ying ng the the HV test test volta voltage ge do does es no nott re requ quir ire e a SANC SANCTI TION ON-FO -FORR-TE TEST ST if th the e HV  APPARAT  APPA RATUS US does not ye yett 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 APPARA APPARATUS, TUS, particularly cables, are discharged discharged to EARTH before and after the application of the HV test voltage. volt age.

(c)

 Any temporary conductors conductors use used d 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 testing using using an HV testin testing g volt voltag age e su supp pply ly is carrie carried d out, out, the AEP shall shall be accompanied by a CEP.

NOMINAL SYSTEM VOLTAGE

SAFETY DISTANCE 'X'

Up to and including 33 kV

0.8 m

Exceeding 3 33 3 kV bu but n no ot ex exceeding 6 66 6 kV

1.0 m

Exceeding 6 66 6 kV b bu ut n no ot ex exceeding 1 13 32 kV

1.4 m

Exceeding 1 13 32 kV b bu ut n no ot ex exceeding 2 27 75 kV

2.4 m

Table-1

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X X

X

DIAGRAM 1

30cm

30cm

NOTE: X = safety distance (from live HV conductors)

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6. Issue Issue A And nd Co Contro ntroll Of Electri Electrical cal Safety Safety Doc Docume uments nts 6.1 INIT INITIA IAT TIO ION N OF DO DOCU CUME MENTS NTS 6.1.1  A WORK PERMIT shall always be issued prior to issuing an ELECTRICAL SAFETY DOCUMENT DOCU MENT in accordance accordance with the Permit Permit to Work Manual. Manual. The issued issued ELECTRICAL ELECTRICAL SAFETY DOCUMENT(S) and the WORK W ORK PERMIT shall cross-refer. cross-refer. 6.1.2  An  An   EL ELEC ECTR TRIC ICAL AL PERM PERMIT IT-T -TOO-WOR WORK K shal shalll be ag agre reed ed by th the e CP an and d is issu sued ed by an ELECTRICAL PERSON, under whose 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-T PERMIT-TO-WORK O-WORK shall be agreed by the CP and issued at site 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.

The maximum number of ELECTRICAL PERMIT-TO-WORK that is allowed to be issued by one SAEP/ AEP at any one time shall be no more than 10. If more ELECTRICAL PERMIT-T PERMIT-TOOWORK are to be issued, then additional SAEP/ AEP has to be made available who shall also comply with the above rule

 A SANCTION-FOR-TEST shall be agree agreed d by the CP and issued by a SAEP under whose approval thebeen testing is initiated, before any testing is carried out on any HV APPARATUS after  it has once 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 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 LIMITAT LIMITATION-OF-ACCESS ION-OF-ACCESS shall be issued by an AEP AEP to allow LIVE LINE W WORKING ORKING or LIVE LINE WASHING procedures proce dures to take place. The CP shall be informed when a LIMITATION-OFLIMITATION-OF ACCESS for these specified specified activit activities ies is issued. 6.1.3  An ELECTRICAL ISOLATION/DE-ISOLAT ISOLATION/DE-ISOLATION ION CERTIFICATE 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  APPARAT  APPA RATUS US that needs to b be e ISOLAT ISOLATED ED before work work commences.  An ELECTRICAL ISOLAT ISOLATION/DE-ISOLAT ION CERTIFICATE CERTIFICA TE (allowing restoration of motive power) shall be issued byION/DE-ISOLATION 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/MOBILISAT IMMOBILISATION/MOBILISATION ION CERTIFICATE CERTIFICATE shall be issued by a responsible member of a Custodian Department to a third party who is to carry out nonelectrical work on LV motor circuits that needs needs to be immobilised before work work commences. The ELECTRICAL IMMOBILISATION/MOBILISATION CERTIFICATE shall only be used by in ca case se the proce procedu dure re is car carrie ried d out out by a suitab suitably ly autho authori rised sed APPOI APPOINTE NTED D PERSON PERSON,, in accordance with the procedure as listed in ESOP 16.

6.2

PRO PROCE CEDUR DURE E FOR IS ISSU SUE E AND RE RECEI CEIPT PT

6.2.1  An ELECTRICAL PERMIT-TO-WORK, PERMIT-TO-WORK, SANCTION-FOR-TEST or LIMITATION-OF-ACCESS 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, PERMIT-T O-WORK, SANCTION-FOR-TEST or LIMITA LIMITATION-OFTION-OF ACCESS shall sign its receipt receip t and its duplicate. Page 27

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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 LIMITATIONOF-ACCESS in his possession at all times, and remain on site, whilst work is being carried out. AEP,, who shall The person in charge to whom a SANCTION-FOR-TEST is issued shall be an   AEP 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 issue of ELECTRICA ELECTRICAL L PERM PERMITS-TO ITS-TO-WORK, -WORK, SANCTIONS-F SANCTIONS-FOR-TES OR-TEST T, ELECTRICAL ELECTRICAL IS ISOL OLA ATIO ION/ N/DE DE-I -ISO SOLA LAT TION ION CE CERT RTIF IFIC ICA ATES ES,, IM IMMO MOBIL BILISA ISAT TIO ION/ N/MO MOBIL BILISA ISAT TIO ION N 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/MOBILISA IMMOBILISATION/MOBILISATION TION CERTIFICATE 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 ISOLAT ISOLATION/DE-ISOLAT ION/DE-ISOLATION ION CERTIFICA CERTIFICATE TE shall be taken by the third party to a suit suitab ably ly au auth thor oris ised ed EL ELEC ECTR TRIC ICAL AL PERS PERSON ON re requ ques estin ting g th the e ISOLA ISOLAT TION ION of th the e  APPARAT  APPA RATUS US prior to the non-e non-electrical lectrical work commencing on such such AP APPA PARAT RATUS. US.  An ELECTRICAL ISOLAT ISOLATION/DE-ISOLAT ION/DE-ISOLATION ION CERTIFICATE CERTIFICATE (allowing restoration of motive powe power) r) sh shall all be taken taken by a third third party party to a suitab suitably ly author authorise ised d ELECTR ELECTRICA ICAL L PERSON PERSON requesting the ISOLATION of the APPARATUS prior to the non-electrical work and subsequent on-load checks checks commencing on such APPA APPARAT RATUS. US. The ELECTRICAL PERSON shall not accept this type t ype of CERTIFICA CERTIFICATE TE (allowing restoration of motive moti ve power) 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 APPARATUS until the CERTIFICATE CERTIFICATE is canceled and returned to the Custodian Department. Permission to commence and carry out the ISOLATION or immobilisation of the APPARATUS, un unde derr ei eith ther er type type of EL ELEC ECTR TRIC ICAL AL IS ISOL OLA ATIO ION/ N/DEDE-IS ISOL OLA ATIO ION N OR EL ELEC ECTR TRIC ICAL AL IMMOBILISA IMMO BILISATIO TION N / MOBIL MOBILISA ISATIO TION N CERTIFICA CERTIFICATE, TE, shall shall be given to the ELECTRICA ELECTRICAL L PERSON or APPOINTED PERSON by the Custodian Department's representative at the site of the APPARA APPARATUS. TUS.

6.3

PRE PRECA CAUTIO UTIONS NS DUR DURING ING PRO PROGRE GRESS SS OF W WORK ORK

6.3.1 HV APPARATUS ISOLATED and EARTHED for work under the terms of an ELECTRICAL PERMIT-T PERM IT-TO-WORK O-WORK shall shall rema remain in so until the ELECTRICA ELECTRICAL L PERMIT-T PERMIT-TO-WORK O-WORK has been cleared, returned to an AEP and cancelled. The APPARATUS ISOLATED and EARTHED for testing under the terms of a SANCTION-FORTEST shall not be connected connected to the system without the agr agreement eement of the CP. The recipient of  the SANCTION-FOR-TEST shall be responsible for coordinating all testing operations on the ISOLATED APPARAT APPARATUS US 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 APPARAT APPARATUS US concerned from a testing supply. This does not mean that the recipient of o f 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/DEISOLATION ISOLAT ION CERTIFICATE CERTIFICATE or IMMOBILISATION/ IMMOBILISATION/ MOBILISATION MOBILISATION CERTIFICATE CERTIFICATE shall remain so until the work is complete. The The AP APPA PARA RATU TUS S ISOLA ISOLATE TED D for work work and and on-lo on-load ad checki checking ng by a third third party party under under an ELECTRICAL ELECTRICA L ISOLAT ISOLATION/DE ION/DE-ISOL -ISOLAT ATION ION CERTIFICA CERTIFICATE TE (all (allowin owing g restora restoration tion of motive power) may be DE-ISOLATED by the ELECTRICAL PERSON to allow on-load checks on the  APPARATUS  APPARAT US to be made by the third party party,, but only under the direct supervision of the ELECTRICAL PERSON. Page 28 PR-1947 Electrical Safety Rules Printed 06/10/2010 The controlled version of this CMF Document resides online in Livelink®. Printed copies are  UNCONTROLLED.

 

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6.4

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PROC PROCEDUR EDURE E FOR CLEA CLEARA RANCE NCE AND CA CANCELLA NCELLATIO TION N

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-TOWORK to an AEP who shall shall cancel it and inform the CP. Where more than one ELECTRICAL PERMIT–TO-WORK has been issued for work on HV  APPARAT  APPA RATUS US associa associated ted with the same CIRCUIT MAIN EARTHS, the CP shall ensure ensure tthat hat all such suc h ELEC ELECTRICA TRICAL L PERMITS-TO PERMITS-TO-WORK -WORK have been cance cancelled lled before before the CIRCUIT CIRCUIT MAIN EARTHS are removed. When tes testin ting g on AP APPA PARA RATU TUS S for wh which ich a SAN SANCTI CTIONON-FOR FOR-TE -TEST ST ha has s been been issue issued d is completed, the recipient shall sign the clearance and return the SANCTION-FOR-TEST to a SAEP for cancellation.  A circuit under SANCTION-FOR-TEST shall shall have all CIRCUIT MAIN EARTHS restored 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 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 LIMIT LIMITA ATIONTION-OFOF-ACC ACCESS ESS which which allow allowed ed LIVE LIVE LINE LINE WORKING WORKING or LIVE LIVE LINE 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/MOBILISAT IMMOBILISAT ION/MOBILISATION ION CERTIFICATE CERTIFICATE is complete the Custodian Department's repres rep resenta entative tive on the site of the APP APPAR ARAT ATUS US sha shallll return return the CERTIFICAT CERTIFICATE E to a suitably suitably authorised authoris ed ELECTRICAL PERSON or APPOINTED PERSON as a request to DE-ISOLATE DE-ISOLATE the circuit and make the APPARATUS ready for operational use. When th When the e work work and and the the on-l on-loa oad d chec checks ks by a th thir ird d pa part rty y un und der an ELEC ELECTR TRIC ICAL AL ISOLA ISO LATI TION/ ON/DEDE-ISO ISOLA LAT TION CERT CERTIFI IFICA CATE TE (al (allow lowing ing re resto stora ratio tion n of motive motive po powe wer) r) ar are e complete, compl ete, the Cus Custodi todian an Depa Departme rtment's nt's repr represe esentativ ntative e on the site of the APPARA APPARATUS TUS shall return the CERTIFICATE to a suitably authorised ELECTRICAL PERSON as a request to DEISOLATE the circuit and make the APPARATUS ready for operational use.

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7. 7. 7.1 1 7.1. 7.1.1 1

Version 9.0 Effective:-Oct 10

Prec Precau auti tion ons s to to b be eT Ta ake ken no on nS Spe peci cifi fic c IIte tems ms of Appar pparat atus us WO WORK RK ON OV OVE ERH RHEA EAD DL LIN INES ES Iden Identi tifi fica cati tion on Of Circ Circui uits ts

7.1.1.1 7.1. 1.1 Single Circuit Circuit High Voltag Voltage e Overhead Overhead Lines

Where poles or structures supporting LIVE conductors are part of an overhead line circuit whose route runs near, or in the immediate vi vici cini nity ty of ot othe herr ov over erhe head ad lin line cir ircu cuit its, s, th then en th thos ose e po pole les s or structur struc tures es shall carr carry y an APPRO APPROVED VED label or symbol symbol to enable easy identication of that circuit from gr ground ound level level.. 7.1.1.2 7.1. 1.2 Double Circuit Circuit High Voltage Voltage Overhe Overhead ad 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 per persons sons from ground level, and by person persons s working working up a tower 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. 7.1.3 3

App ppro roac ach h of Ligh Lightn tnin ing g On th the e ne near ar appr approa oach ch of a ligh lightn tnin ing g stor storm, m, al alll work work on ov over erhe head ad line lines s shal shalll ceas cease e immediately and the CEP in charge shall inform the AEP that his WORKING PARTY are not working on the overhead line.

7.1.4 7.1. 4

Work Work on Poles Poles Supp Supporting orting The High High Volt Voltage age Conduc Conductors tors of On One e Cir Circuit cuit No CEP shall shall climb any such pole suppor supporting ting LIVE conductor conductors s except except under under the direct 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 DISTA NCES 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 conductors not less than those specified in Rule 5.6.

7.1.5 Work on Towers Towers or Structures Structures Supporting the High Voltage Voltage Conduc Conductors tors of Two 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 personally ensure that DANGER 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 A APPROVED PPROVED red flags fla gs 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 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. Page 30

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7.1.6 7.1. 6 Work Work on Single or Double Circ Circuit uit High Volt Voltage age Overhead Overhead Lines with All All Conductors 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)

Issu Issue e the the CE CEP P ho hold ldin ing g the the EL ELEC ECTR TRIC ICAL AL PERM PERMIT IT-T -TOO-WOR WORK K wi with th po port rtab able le 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 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.

7.1.7 7.1 .7

(b)

Remove and re-app Remove re-apply ly thes these e ADD ADDITIONAL ITIONAL EARTHS EARTHS at different different points of  work wo rk on the line, line, but but onl only y if the they y ar are e kept kept be betw twee een n the CIRCUIT CIRCUIT MAIN EARTH positions.

(c)

Dispense the use of immediate ADDITIONAL EARTHS if CIRCUIT MAIN have beenwith applied in the vicinit vicinity y at each side of the pointEARTHS of work.

(d)

If the WORKING PARTY leaves the line at any time, check when they come back, that they have returned returned to the same line and that all EARTHS adjacent 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 EARTH EARTHS. S.

(f)

Sign the 'Clearance Section' of the ELECTRICAL PERMITPERMIT-TO-WORK. TO-WORK.

Work Work on Doubl Double e Circui Circuitt Lin Lines es with with o one ne Circ Circuit uit Liv Live e

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. 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)

En Ente terr on the the EL ELEC ECTR TRIC ICAL AL PERM PERMIT IT-T -TOO-WOR WORK K th the e word wordin ing g of th the e ci circ rcui uitt 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

Page 31

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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 DISTANCES specified in Rule 5.6.

(g)

Remain on the ground, adjacent to the tower or structure, watching whilst members of the WORKING W ORKING PAR PARTY TY are are working above the anti-climbing guards. guards. Be prepared 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 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 of work and the APPROVED red and green flags and DANGER NOTICES are kept in position. 7.1.8 7.1. 8

Work Work on the the Com Common mon Ea Earth rth C Conduc onductor tor of of Double Double Circuit Circuit Ove Overhea rhead d Lines Lines

7.1.8.1 Before work commences on the overhead common EARTH conductor of a double circuit overhe ove rhead ad line, line, the AEP shall shall ensu ensure re tha thatt both both circui circuits ts are made DEAD, DEAD, an and d that that the procedures procedu res called for in Rule 5.3 and Rule 7.1.6 are applied for both circuits.

7.2 7.2

WO WORK RK ON UNDE DERG RGRO ROUN UND D CA CABL BLES ES

7.2. 7.2.1 1

Work Work on High High V Vo olt ltag age eC Cab able les s For work on HV cables, the AEP in addition to the procedures called for in Rule 5.3 shall:-

7.2. 7.2.2 2

(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.

Work Work on Lo Low w Vo Volt ltag age e Cab Cable les s For work on LV cables, the CESP in addition to the procedures called for in Rule 5.4 shall:-

7.2.3 7.2 .3

(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.

Work Work In In The Vic Vicinit inity y of Buri Buried ed Hi High gh V Vol olta tage ge Cabl Cables es

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 preven preventt su such ch incide incidents nts it is nece necessa ssary ry for a re resp spon onsi sible ble member member of the Custo Custodia dian n Department to issue an EXCAVATION PERMIT to the person in charge of the excavation. 7.2.3.2 If the excavations excavations are in the vicinity of und underg ergrou round nd electrical electrical cables cables then an AEP shall specify spe cify on the EXCAVA EXCAVATION TION PERM PERMIT IT any additio additional nal precau precautions tions that shall shall be taken to safeguard the cables. 7.2.3.3 If in th the e view view of the the AEP the cabl cables es shou should ld be made made DEAD DEAD,, th then en an EL ELEC ECTR TRIC ICAL AL ISOLATION/DE-ISOLAT ISOLAT ION/DE-ISOLATION ION CERTIFICATE CERTIFICATE shall be issued to cover this th is SWITCHING. SW ITCHING. Page 32

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7. 7.3 3

WO WORK RK ON HIG IGH H VOL VOLT TAGE TR TRA ANS NSFO FORM RMER ERS S

7.3.1

For work on HV transformers, the AEP in addition to the procedures called for in Rule 5.3 shall:-

7.4

(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)

Wher Where e work wo rk ISOLATED is to be carrie car ried d out on opening an HV/L HV/Lof V atra transf nsform ormer , en ensu sure re that the LV windings are either by the switch orer, 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. ISOLATION.

(c)

Before issuing the ELECTRICAL PERMIT-TO-WORK to the CEP, identify at the point of work, the transformer to be worked on.

WOR WORK KO ON NH HIG IGH H VOL VOLT TAGE S SWIT WITCHG CHGEA EAR R

7.4.1 7.4. 1 Withdrawa Withdrawable ble Appara Apparatus tus When work is to be carried out on withdrawable HV APPARATUS (e.g. a circuit breaker), then the AEP in addition to the procedures 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. housing.

(b)

Discharge its conductors to EARTH, but they need not remain connected to EARTH.

7.4.2. Work on Busbar 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 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 busba busbars rs can be made made LIVE.

(d)

 Attach DANGER NOTICES, where applicable, on or adjacent to APPARA APPARATUS TUS containing LIVE conductors at the limits of the busbar on which work is to be carried out.

(e)

Test with antesting APPROVED testing the voltage device voltage before and afterdevice use. that the busbars are dead, checking

(f)

EARTH the busbar at the point of testing and where practicable lock the CIRCUIT MAIN EARTH in position.  Attach an EARTHED EARTHED NOTICE to the circuit breaker or EAR EARTHING THING device.

7.5

(g)

Test with an APPROVED voltage testing device every spout where work is to be carried out, checking the voltage testing device devic e before and after use.

(h)

Issue an ELECTRICAL PERMIT-TO-WORK to a CEP.

WORK IN S SUBST UBSTA ATIONS WIT WITH H EXPO EXPOSED SED HI HIGH GH VOL VOLT TAGE COND CONDUCTO UCTORS RS

7.5.1 7.5. 1 Safety Safety Distanc Distances es to Live Co Conducto nductors rs When work is to be carried out in substations where there are exposed LIVE HV conductors, then the whole APPARATUS andshall:conductors are to be made DEAD, the AEP in addition to theunless procedure procedures s called for in Rule 5.3 Page 33

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(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 tool s and equi equipment pment they are to use use.. If no ELECTRICAL ELECTRICAL PERMIT-T PERMIT-TO-WORK O-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 APP APPROVE ROVED D bar barrier riers s or ropes are necess necessary ary to define define the safe area area of work, work, ensure that these are clearly visible and are not tied or supported by any structure carrying LIVE APPARA APPARATUS TUS or conductors. conductors. The safe area shall shall be identified by the att attach aching ing of gr gree een n flag flags s insid inside e the ba barr rrier iers s or ro rope pes s and and DANGER DANGER NOTICES 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 ladde ladders rs ar are e used used to gain gain acc access ess to DEAD DEAD APPA APPARA RATU TUS, S, su subje bject ct to an EL ELEC ECTR TRIC ICAL AL PERM PERMIT IT-T -TOO-WOR WORK, K, thes these e shal shalll be lo locke cked d in po posi siti tion on wi with th a STANDARD ELECTRICAL PADLOCK or by any other APPROVED means such that they cannot be removed unauthorised.

(d)

7. 6

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 substation to that position shall fi first rst be agreed. agree d. Scaffolding and cra cranes, nes, etc., shall be connected connected to the substatio substation n EARTH system as soon as they are in position for work to take place.

WORK ON APPARATUS

REMOTELY

OR

AUTOMA MAT TICALLY

CONTROLLED

HV

7.6.1 7.6 .1 Physic Physical al Dang Danger  er  Serious bodily harm can be suffered by persons working on HV APPARATUS such as tapchange chan ge gear, circuit breakers, breakers, etc, due to the automatic automatic or remote control control feature being operated in error. 7.6. 7.6.2 2 Pr Prec ecau auti tion ons s 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)

7.7

Take such precautions to ensure that no work will be in progress on the tap-changer, circui circuitt breake breakerr etc., etc., wh when en work work is tak taking ing place place on the contro controlli lling ng equip equipmen mentt associated wiring or relays, except when it is undertaken by an AEP or CEP acting under his direct supervision.

WORK AND TE TESTING STING ON HV MOTO MOTOR R CI CIRCUIT RCUITS S (inc (includes ludes HV ci circuit rcuits s with an LV motor, eg. beam pump circuits)

7.7.1  As no electricity can be backfed from an ISOLATED ISOLATED HV motor circuit, the following procedure procedure may be adopted if the CP and the AEP both agree to its use, for routine maintenance work only, without without preparing a SWITCHING PROGRAMME for a particular c circuit. ircuit. 7.7.2

The AEP shall then, in sequence:(a)

Page 34

Open the HV motor circuit making the motor DEAD. PR-1947 Electrical Safety Rules

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(b)

ISOLA ISO LATE TE the HV motor motor circui circuitt and and app apply ly SAFETY SAFETY PADLO ADLOCKS CKS and and CAUTIO CAUTION N NOTICE at the point of ISOLATION.

(c)

EARTH the HV motor circuit at the point of ISOLATION ISOLATION through the circuit breaker or  by other APPROVED means, (ie. apply a CIRCUIT MAIN EARTH).  Attach an EARTHED EARTHED NOTICE to the circuit breaker, if applicable.

7.8

(d)

Issue an ELECTRICAL PERMIT-TO-WORK to the CEP at the point of work.

(e)

Receive back the ELECTRICA Receive ELECTRICAL L PERMIT-T PERMIT-TO-WORK O-WORK with the 'Clearan 'Clearance ce Section' 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.

(g)

Cancell the ELE Cance ELECTR CTRICA ICAL L PERMIT PERMIT-T -TOO-WORK, WORK, re remove move SAFETY SAFETY PA PADLO DLOCKS CKS,, CAUTION NOTICES, any DANGER and EARTHED NOTICES and resto restore re the circuit breaker to the service position.

WOR WORK K ON LOW VOL VOLT TAGE S SWIT WITCHB CHBOA OARDS RDS

7.8.1 Due to the danger danger of electr electrica icall backfe backfeeds eds from bo both th HV tra transf nsform ormer ers s and and LV incomi incoming ng 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 PERMITTO-WORK to the person in charg charge e 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 switchgear units shall be opened and, where practicable, a SAFETY PADLOCK applied. CAUTION NOTICES shall be attached to such switchge switchgear ar 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 shall be applied to the HV winding winding of the transformer. transformer.

(e)

 An ELECTRICAL PERMIT-T PERMIT-TO-WORK O-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 switchboard shall be in accordance 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 PERMIT-TO-WORK issued for the work.

7.9

WORK O ON N HIG HIGH H VOL VOLT TAGE ST STA ATI TIC C CA CAPA PACITO CITORS RS

7.9.1 For work on HV static capacitors the AEP in addition to the procedures called for in Rule 5.3 shall:(a)

Page 35

 Apply APPROVED APPROVED capacitor EARTHING devices devices to the capacitor frames.

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(b)

 Apply APPROVED capacitor EARTHING devices to the common connection of each group of capacitors.

(c)

Issue ADDITIONAL EARTHS to the CEP holding the ELECTRICAL PERMIT-TOWORK and instruct him to apply these to the capacitor units at the point of work.

Capacitor units shall be short-circuited and remain short-circuited:short-circuited:(a) or 

When removed from the circuit

(b)

In case cases s wh wher ere e the the AEP finds finds it is no nott pr prac actic ticab able le to ap appl ply y th the e EART EARTHI HING NG requirements requireme nts of Rule 7.9.1.

7.10 SWITCHING, WO WORKING RKING OR TESTING IN HA HAZARDOUS ZARDOUS AR AREAS. EAS. 7.10.1General  All electrical work and/or electrical testing in PDO designated designated hazardous 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, SW ITCHING, work or testing on eith either er HV or LV APP APPAR ARAT ATUS, US, sha shallll apply apply to all the APPAR APPARAT ATUS US located located in hazardous areas. 7.10.2Additional Precautions The person in charge of work or testing in hazardous areas shall ensure that:(a)

Before Befor e removi removing ng any covers covers of cert certified ified APPARA APPARATU TUS S the incoming incoming connectio connections, ns, including the neutral, are made DEAD and have been ISOLATED at a unit outside the hazardous area.

(b)

No SWI SWITC TCHI HING NG,, test testin ing g or othe otherr op oper erat atio ions ns ar are e ca carr rrie ied d ou outt on ce cert rtif ifie ied d  APPARAT  APPA RATUS, US, whilst its covers are removed and the electrical connections connections are exposed to the atmosphere. unless

(c)

Page 36

Suitable gas testing equipment is first used to check that no flammable gases, that could create a hazard, are present at the point of work or testing.

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8. Liv Live Li Line Wor orki king ng 8. 1

GENERAL

8.1.1 To date no PDO personnel have been trained, authorised or equipped to carry out LIVE LINE WORKING procedures 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 requiremen ts of Rule 8.1.2 are met. (See ESOP 22 for guidance). guidance). 8.1.4 The LIVE LINE WORKING WORKING and and the safe safety ty of the team sh shall all be the respon responsi sibili bility ty 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 LIVE L LIN INE E TO TOOL OLS SA AND ND E EQU QUIP IPME MENT NT 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. NOMINAL SYSTEM VOLTAGE

SAFE HANDLING 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

8. 8.3 3

SA SAFE FETY TY PR PREC ECA AUT UTIO IONS NS

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 W ORKING procedure. 8.3.4 The AEP shall shall agree with the CP that if the circuit becomes dead dead due to the operation operation of  protective equipment, the circuit shall not be re-energised 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 Page 37

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to stop the work if he consi considers ders the Con Contract tractors ors are not working working safely. safely. (See (See ESOP 22 for  guidance). The The AE AEP P sh shall all rem remain ain on site site thr throu ough ghou outt any LIVE LINE LINE WORKING WORKING that that takes takes place place in substations or on double circuit overhead ov erhead lines. (See ESOP 22 for guidance). 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 Before work work comme commences nces,, all cond conductor uctors s and associ associated ated pole top, line and tower fittings, steelwork and insulators shall be thoroughly examined at the point of work, through binoculars if necessary, necessary, so as to minimise the possibility of ffailure ailure 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. sounded. No pole badly impair impaired ed by decay or damag damage e 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. 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 Contract Con tractor's or's Supervis Supervisor or in char charge ge of the LIVE LINE WORK. W ORK. Temporary mporary markers 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 Table 3

2.4 m

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 equipment necessary for this work. 8.3.12 The AEP shall shall inform the CP when the LIVE LIN

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9. Liv Live Line Line Wash shiing 9. 1

GENERAL

9.1.1.. To date no PDO personnel 9.1.1 personnel have been trained, authorised or equipped equipped to carry out LIVE LINE WASHING on HV insulators on PDO electrical systems. 9.1.2 WASHING Contractorsprocedures, selected to adequately carry out such LIVE LINE WASHING shall have proven LIVE LINE trained and experienced staff and all the necessary well maintained equipment equipment to carry out such work. (See ESOP 22 for guidance). guidance). 9.1.3 The AEP before initiating LIVE LINE WASHING shall ensure that the Contractor's Supervisor  has the necessary 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 The LIVE LIVE LIN LINE E WAS WASHIN HING G and and the safe safety ty of the team shal shalll be the re resp spon onsib sibilit ility y of th the e Contractor's Supervisor, who shall ensure that the work is carried out correctly and is present all the time ti me the washing is taking place in accordan accordance ce with the Rules in tthis his Section 9.0.

9.2 LIVE LIVE L LIN INE E WA WASH SHIN ING G EQ EQUI UIPM PMEN ENT T 9.2.1 site.

Monitoring devices to check the conductivity of the water to be used shall be available on

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 mm 2 copper equivalent in cross-section. cross-section.

9. 9.3 3

SA SAFE FETY TY PR PREC ECA AUT UTIO IONS NS

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 issue a LIMITA LIMITATIO TION-OFN-OF-ACCES ACCESS S to the Contract Contractor's or's Supervisor 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 Contractors are not working safely. 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). guidance). 9.3.3 The water water being used used for LIVE LINE WASH WASHING ING shall shall have a conductivi conductivity ty of less than 400 micro siemens/cm. siemens/cm. This This shall be constantly constantly monitor monitored ed as a rise in the water temperatu temperature re increase incr eases s its cond conductivity uctivity.. The water water quality monitori monitoring ng shall be done done using an automatic automatic monitoring device fitted fit ted with an audible alarm signal. When no connection connection to a fixed EARTH EARTH plate is availa available ble on site for the bonding 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). 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. Page 39

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The safety clearance necessary shall be agreed between the Contractor's Supervisor and the  AEP depending depending on on the Contra Contractor's ctor's methods, eq equipment uipment and experience. 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 operatorr wears any protective clothing necessary for this work. operato The AEP shall shall inform the CP when the LIVE LINE WASHING is complete.

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10. USE OF APPOINTED APPOINTED PERSON PERSONS S 10.1 10 .1 GE GENE NERA RAL L 10.1.1For 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 operational duties. Entering Enter ing a su subst bstati ation, on, wh which ich has has no expose exposed d HV condu conducto ctors, rs, to re read ad meter meters s or inspe inspect ct equipment, does not necessarily require the electrical experience of a person who has CEP status. 10.1.2 The role of an AP is gen generally erally defined in Rule 2.1.4.8.

10.2 10. 2 SW SWITCH ITCHING ING DUT DUTIES IES 10.2.1 An AP may be nominated by his Custodian Department to carry out specific limited HV SWITCHIN SWITC HING G fro from m a posit position ion rem remote ote from from the circui circuitt breake breaker, r, or limited limited LV SWITCHIN SWITCHING G 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. 10.2.2If 10.2.2 If the CP agre agrees es to the AP carryin carrying g out out this this limi limited ted SWITCHIN SWITCHING, G, then then an APPROV APPROVED ED PROCEDURE FOR APPOINTED PERSONS shall be prepared for this purpose 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 SW ITCHGEAR OPERATING OPERATING PROCEDURES.

10.3 10 .3 APP PPOI OINT NTME MENT NT  Applications for personnel personnel to become AP s shall hall be dealt with in accordance accordance with ESOP 3.

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

RULE

APPROVAL

REFERENCE DOC.

H-1.2

CAUTION NOTICE (METL/PLAST)

SAP: 1000067415 / 1000067421

H-1.2

DANGER NOTICE (METL/PLAST)

SAP:1000067414 / 1000067420

H-1.1

EARTHING LEADS

ESOP 6

H-1.3

CME LABEL (M (METL/PLAST)

SAP: 1000067417 / 1000067423

H-1.3

AE LABEL (M (METL/PLAST)

SAP: 1000067418 / 1000067424

H-1.2

EARTHED NOTICE (METL/PLAST)

SAP: 1000067416 / 1000067422

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 PADLOCKS

ESOP 2

H-1.2

SW ITCHING PROGRAM

ESOP 4

2.1.4

REPORTING PROCEDURE

ESOP 18

2.1.5

REPORTING PROCEDURE

ESOP 18

2.3.1.4

SAFETY HARNESS

2.3.2.1[ii]

SW ITCHING PROGRAM

2.3.2.1[v]

ELECTRICAL RUBBER GL GLOVES (H (HV)

2.3.2.1[v]

SAFETY HELMET

2.3.2.3

REPORTING PROCEDURE

ESOP 18

2.3.3(b)

SECURITY METHOD

ESOP 2

2. 2.3. 3.4[ 4[i( i(d) d)]]

VOL VOLTAGE TE TEST STIN ING G DE DEVI VICE CE

ESOP ESOP 5

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ESOP 4

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2.3.4[iii]

EQUIPMENT AND INSTRUMENTS

2.3.4[iii]

ELECTRICAL RUBBER GLOVES (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

2.3.5.2[i(b)]

CME LABEL (METL/PLAST)

2.3.5.2[i(b)]

AE LABEL (METL/PLAST)

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

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SAP: 1000067107

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2.5.1.6[i(c)]

VOLTAGE TESTING DEVICE

2.5.1.6[ii(a)]

AE LABEL (METL/PLAST)

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 & SPIKING

ESOP 10

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

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]

SW ITCHING PROCEDURE

ESOP 3

Page 44

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ESOP 5

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APPENDIX B – ELECTRICAL PERMIT TO WORK 

No.

Petroleum Development Oman LLC  ELECTRICAL ELECTRICA L PERMIT-TO-WORK  PERMIT-TO-WORK  WORK PERMIT No:

1.

LOCATION:

WORK SITE:

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-T PERMIT-TO-WORK O-WORK to proceed:APPARATUS:………………………………………………………………………………………………………………………… TREAT ALL OTHER APP APPARAT ARATUS US 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 EART EARTHS HS APPLIED AT:…………………………………………………………………… AT:……………………………………………………………………………………….. ………………….. ………………………………………… ………………… ……………………………………………… ……………………………………………… …………………………………….............................. ……………............................................... ................. SET NUMBER NUMBER OF ADDITI ADDITIONAL ONAL EARTH EARTHS S ISSUED:… ISSUED:………………………… ……………………………………….. ……………….. ………………… …………………………… ………… KEY SAFES/ SAFES/SAF SAFETY ETY PADL PADLOCK OCK NOS:

……………… ………………………… ………………… ………………… …………………… …………………… ………………… ………………… ………….. ..

OTHER PRECAUTIONS:………………………………………………………………………………………………………… SI SIG GNED ED…… ……… …………… ………… ……… …………… ……………… ………… ……..

TI TIME ME… ……… ……… ………… …….. .. DATE……… E…………… ……… ……… ………. …...

*SENIOR AUTHORISED/AUTHORISED ELECTRICAL PERSON ISSUED WITH ISSUED WITH THE THE A AGRE GREEMEN EMENT T OF…… OF…………… ………………… ………………… ………………… …………………… ……………. ….  

(CO (CONTR NTROL OL PERSON PERSON))

2.

RECEIPT I accept responsibility for carrying out the work on the APPARATUS detailed on this ELECTRICAL PERMIT-TOWORK and no attempt att empt will be made by me or persons under my charge to work on any other APPAR APPARAT ATUS. US. SI SIGN GNED ED…… ………… ………… ………… ………… ………… ………… ………… …… TIME TIME…… ………… ………… ………… ………… ……… … DA DAT TE… E……… ………… ………… ………… ………… …….. .. 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 PERMITPERMIT-TO-WORK. TO-WORK. ALL ADDITIONAL EARTHS have been removed. The Work is *COMPLETE/INCOMPLETE SIGN SIGNED ED…… ………… ………… ………… ………… ………… ………… ……..

TIME TIME…… ………… ………… ………… ………… ……… … DA DAT TE… E……… ………… ………… ………… ………… ………… ……

COMPETENT ELECTRICAL PERSON

4

CANCELLATION

This ELECTRICAL PERMITPERMIT-TO-WORK TO-WORK is cancelled. SIGN SIGNED ED…… ………… ………… ………… ………… ………… ………… ……..

TIME TIME…… ………… ………… ………… ………… ………. …. DA DAT TE… E……… ………… ………… ………… ………… ……… …

*SENIOR AUTHORISED/AUTHORISED ELECTRICAL PERSON CANCELLATION CANCELLA TION NOTIFIED TO ……………………………… ………………………………………………… ………………………………… ……………………………… ………………………….(CONTROL ………….(CONTROL PERSON)

*Delete word not applicable APPENDIX C - SANCTION FOR TEST

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Petroleum Development Oman LLC No.

SANCTION-FOR-TEST WORK PERMIT No:

1.

LOCATION:

WORK SITE:

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 DANG ER NOTICES NOTICES

POSTED AT:………… :……………………………… …………………………………………… ……………………………………………… ………………………………… …………

CIRCUIT MAIN EART EARTHS HS APPLIED AT:…………………………………………………………………………………. :…………………………………………………………… ……………………. (THESE MAY BE BE REMOVED AND REPLACED UNDER THIS SANCTION-FOR-TEST)

SET NUMBER OF ADDITIONAL EARTHS EARTHS ISSUED:………………………………………………… ISSUED:…………………………………………………………………… ………………… KEY SAFES/SAFETY SAFES/SAFETY PADLOC PADLOCK K NOS:…… NOS:………………………… ……………………………………………… ………………………………………………… ……………………………... ……... SIGNED……………………………………

TIME………………………

DATE

……………… ………… .

SENIOR AUTHORISED ELECTRICAL PERSON

ISS SSU UED WI WITH TH AGRE REEM EMEN ENT T OF… OF…… …………… ……………… ………… ………… ………… ………… ………… ………… ………… ………. …... PERSON) 2.

(C (CON ONTR TROL OL

RECEIPT

I accept responsibility for the testing of the APPARATUS detailed on this SANCTION-TO-TEST and for taking precautions to prevent danger. SIGNED………………………………… AUTHORISED AUTHORI SED ELECTRICAL PERSON 3.

TIME……………………..

DATE……………………………..

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. below. Exception (if none, state none) SI SIGN GNED ED…… ………… ………… ………… ………… ………… ………. …...

4

TIME TIME…… ………… ………… ………… ………… ……… … DATE… E……… ………… ………… ………… ……… ……. …... ..

AUTHORISED AUTHORI SED ELECTRICAL PERSON CANCELLATION This SANCTION-FOR-TEST is now cancelled. SIGNED………………………………….

Page 46

TIME…………………………..

PR-1947 Electrical Safety Rules

DATE

… … … … … … … … … … ..

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SENIOR AUTHORISED ELECTRICAL PERSON

CANCELLATION CANCELLA TION AND OPERATI OPERATIONAL ONAL STATE STATE NOTIFIED TO TO………………………. ……………………….

(CONTROL PERSON)

APPENDIX D - LIMITATION OF ACCESS

No.

Petroleum Development Oman LLC 

LIMITATION-OF-ACCESS ELECTRICAL APPARATUS W ORK PERMIT No:

1.

LOCATION:

W ORK SITE:

ISSUE TO……………………………………………………………………………………………………………………… Permission is given to carry out the work described below below which is in the vicinity of LIVE conductor:-

 

WOR WORK K LOCATION:……………………………………………………………………………………………… LOCATION:……………………………………………… …………………………………………………. ….

 

WORK TO BE DONE:………………………………………… DONE:…………………………………………………………………… ………………………………………………… ………………………… … NO OTHER WORK SHALL BE CARRIED OUT

 

LIVE APPARATUS:……………………………………………… APPARATUS:………………………………………………………………………………………… …………………………………………………. ……….

 

SPECIAL PRECAUTION PRECAUTI ON TAKEN:…………………………………………………………………………………… TAKEN:…………………………………………………………… ………………………

   

PRECAUT PRECAUTIONS IONS THAT MUST BE TAKEN WHEN WORK IS CARRIED OUT:…………………………………. OUT:…………………………………. …………………………………………………………………………………………………………………………….   SAFETY PRECAUTIONS PRECAUTI ONS FOR WORK WOR K ON LOW VOLTA VOLTAGE GE APPA APPARATUS:………………………………………. RATUS:……………………………………….

 

……………………………………………………………………………………………………………………………….

  KEY SAFES/SAFETY SAFES/ SAFETY PADLOCK PADLOCK NOS:……………………………………………………………………… NOS:……………………… ………………………………………………………… ………… *(When applicable) SIGNED………………………………..

TIME………………………….

DATE………………………………..

*SENIOR AUTHORISED/AUTHORISED ELECTRICAL PERSON

2. RECEI ECEIPT PT  

accept responsibility responsibility for carrying out the work in accordan accordance ce with this LIMITATION-OF-ACCESS LIMITATION-OF-ACCESS and no other  work will be done by me or the persons under my charge. SI SIGN GNED ED…… ………… ………… ………… ………… ………. …... TIME TIME…… ………… ………… ………… ………… ……..

DAT DATE……… E…………… ………… ………… ………… ………. …...

COMPETENT ELECTRICAL PERSON 3.

CLEARANCE

 

All persons persons under my charg charge e have have now now been withdrawn withdrawn and warned warned that it is no no longer permitted to carry carry out work specified on this LIMITATION-OF-ACCESS SIGNED SIG NED…… ………… …………… ……………… ………….. ….. TIME…… TIME………… …………… ……………… ……….. ..

DATE DATE……… …………… …………… …………… …………… …………… ……

COMPETENT ELECTRICAL PERSON

4 CANC CANCEL ELLA LAT TIO ION N   This LIMITAT LIMITATION ION OF ACCESS is now cancelled. SI SIGN GNED ED…… ………… ………… ………… ………… ………… …… TI TIME ME…… ………… ………… ………… ………… ………… …….. ..

DAT DATE… E…… ……… ………… ………… ………… ……… …

*SENIOR AUTHORISED/AUTHORISED ELECTRICAL PERSON *Delete word not applicable

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APPENDIX E1 – ELECTRICAL ISOLATION/DE-ISOLATION CERTIFICATE

No.

Petroleum Development Oman LLC 

ELECTRICAL ISOLATION/DE-IS ISOLATION/DE-ISOLAT OLATION ION CERTIFICATE CERTIFICATE WORK PERMIT No:

LOCATION:

WORK SITE:

ISOLATION ISOLAT ION CERTIFICA CERTIFICATE TE APPLIED FOR BY:…………………………… BY:…………………………………………………… ………………………………………... ………………... DEP DE PARTMEN TMENT/ T/SE SECT CTIO ION: N:…… ………… ………… ………… ………… ………… ………… ………… ………… ………… ………. …... 1.

(REF (REFER EREN ENCE CE IN INDI DICA CAT TOR OR))

PERMIS PERMISSION SION IS GIVEN GIVEN TO RELEAS RELEASE E THE THE FOLLOWIN FOLLOWING GA APP PPAR ARAT ATUS: US: EQUIPMENT/ EQUIP MENT/TA TAG G

No:………… No:…………………… …………………… …………………… …………………… …………………… ………………… ………………… …………………… ……………….. ……..

EQUIPMENT ……………………………………………………………………………………………..  

SIGNED…………… SIGNED…………………………………REFE ……………………REFERENCE RENCE INDICATOR…………… INDICATOR…………………….. ………..  

1A 1A..

FUNCTION: DATE………………… DATE…………………..

CUSTODIAN

PERM PERMIS ISSIO SION N IS GI GIVE VEN N TO A COMP COMPET ETEN ENT/ T/AU AUTH THOR ORISE ISED D EL ELEC ECTR TRIC ICAL AL PERS PERSON ON TO ISOLA ISOLAT TE THE THE  ABOVE APPARA APPARATUS TUS  

SIGNED………………………………..REFERENCE SIGNED………………………………..REFERENCE INDICATOR……………… INDICATOR…………………………DA …………DATE……… TE………………... ………...

 

2

CUSTODIAN REPRESENTA REPRESENTATIVE TIVE ON SITE

THE THE APP PPA ARAT RATUS IIS S IS ISOLAT LATED FROM: ROM: SAFETY PADLOCK Nos:………………….AND CAUTION NOTICES HAVE BEEN APPLIED AT:…………….. KEY SAFE NO.(If applicable):…………………………… applicable):……………………………………………….. ………………….. FUSES REMOVED AND PLACE AT:……………………………………….   SIGNED……………… SIGNED……………………………….TI ……………….TIME…………………………………. ME………………………………….

 

3

DATE………………….

*COMPETENT/AUTHORISED ELECTRICAL PERSON

DE-ISOLATIO ION N APPLIED FO FOR BY BY:  

SIG SIGNED NED…… …………… ……………… ……………… …………RE …REFER FERENC ENCE E

INDICA INDICAT TOR…… OR………… …………… …………… ……..

DATE………………….  

4

COMPETENT ELECTRICAL PERSON

PERMIS PERMISSION SION IS GIVEN GIVEN TO:…… TO:………… ………… …………… …………… …………… ……………… ……………… …………… …………… ……………… ……………… ……………… ………… …   *COMPETENT/AUTHORISED ELECTRICAL PERSON TO DE-ISOLATE THE APPARATUS DESCRIBED IN SECTION 1.   SIGNED…………… SIGNED……………………………. ……………….REFERENCE REFERENCE INDICATOR…………… INDICATOR………………………….DA …………….DATE………… TE…………….. ….. Page 48

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CUSTODIAN REPRESENTA REPRESENTATIVE TIVE IN SITE

I CO CONF NFIR IRM M TH THA AT THE DE DE--ISO ISOLAT LATION ION REQ REQUE UES STED TED IN SEC SECTIO TION 4 HAS BEE BEEN COM COMPLETE LETED D AND CAUTION NOTICES & SAFETY PADLO PADLOCKS CKS REMOVED.   SIGNED………………… SIGNED………………………………REFER ……………REFERENCE ENCE INDICATOR………………………… DATE……………..  

*COMPETENT/AUTHORISED ELECTRICAL PERSON

*Delete as applicable

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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: ONL NOTE: ONLY TH THE E WOR WORK K PERM PERMIT IT ALLO ALLOWING WING THIS THIS W ORK ORK AND THE ON-LO ON-LOAD AD CHECK CHECKS S SHAL SHALL L BE ISSUED ON THIS APPARATUS APPARATUS IF MOTIVE POWER IS TO BE RESTORED 1.

PERMIS PERMISSION SION IS GIVEN GIVEN TO RELEAS RELEASE E THE THE FOLLOWIN FOLLOWING GA APP PPAR ARAT ATUS: US: EQUIPMENT/ EQUIP MENT/TA TAG G

No:………… No:…………………… …………………… …………………… …………………… …………………… ………………… ………………… …………………… ……………….. ……..

EQUIPMENT …………………………………………………………………………………………………

FUNCTION:

  SIGNED………………… SIGNED………………………………………REFE ……………………REFERENCE RENCE INDICATOR………………………DATE…………..  

1A 1A..

CUSTODIAN

PERM PERMIS ISSIO SION N IS GI GIVE VEN N TO A COMP COMPET ETEN ENT/A T/AUT UTHO HORIS RISED ED EL ELEC ECTR TRIC ICAL AL PERS PERSON ON TO ISOL ISOLA ATE THE THE  ABOVE APPARA APPARATUS TUS AND WHEN REQUESTED RESTORE MOTIVE POWER ON-LOAD CHECKS TO BE MADE.   SIGNED………………… SIGNED………………………………………REFE ……………………REFERENCE RENCE INDICATOR………………………DATE……………  

2.

CUSTODIAN REPRESENTA REPRESENTATIVE TIVE ON SITE

THE APP APPAR ARA ATUS TUS IS ISO ISOLA LATE TED D FROM:…… FROM:…………… ……………… …………… …………… …………… …………… ……………… ……………… …………… …………… ………  And motive power power shall only be restored for on-load checking purpo purposes ses 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 PADLOC SAFETY PADLOCK K Nos:……… Nos:…………..AND …..AND CAUTION CAUTION NOTICES NOTICES HAVE HAVE BEEN APPLIED APPLIED AT:………… :……………… …… KEY SAFE NO.(If applicable):…………………………… applicable):……………………………………. ………. FUSES REMOVED AND PLACE AT:…………………………………….

3

  SIGNED………… SIGNED……………………………………… …………………………… TIME…………………………..DATE………………………………. TIME…………………………. .DATE……………………………….   *COMPETENT/AUTHORISED ELECTRICAL PERSON DE-ISOLATIO ION N APPLIED FO FOR BY BY:   SIGNED………………… SIGNED………………………………………REFE ……………………REFERENCE RENCE INDICATOR……………DATE…………………….. COMPETENT ELECTRICAL PERSON

4

PERMIS PERMISSION SION IS GIVEN GIVEN TO:…… TO:………… ………… …………… …………… …………… ……………… ……………… …………… …………… ……………… ……………… ……………… ………..  

COMPETENT/AUTHORISED ELECTRICAL PERSON

TO DE-ISOLATE THE APPARATUS DESCRIBED IN SECTION 1.   SIGNED………………… SIGNED…………………………………….. …………………...REFER .REFERENCE ENCE INDICATOR…………….DATE……………………..  

5

CUSTODIAN REPRESENTA REPRESENTATIVE TIVE IN SITE

I CONF CONFIR IRM M THAT HAT THE THE DE-I DE-ISO SOLA LAT TIO ION N REQU REQUES ESTE TED D IN SECTI SECTION ON 4 HAS HAS BEEN BEEN CO COMP MPLE LETE TED D AND CAUTION NOTICES & SAFETY PADLOCKS PADLOCKS REMOVED.   SIGNED………………………………………REF SIGNED……… ………………………………REFERENCE ERENCE INDICATOR…………….DATE…………………….. *COMPETENT/AUTHORISED ELECTRICAL PERSON

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*Delete as applicable APPENDIX E3 – ELECTRICAL IMMOBILISATION / MOBILISATION CERTIFICATE

No. Petroleum Development Oman LLC ELECTRICAL IMMOBILISATION / MOBILISATION CERTIFICATE

WORK PERMIT No:

Immobilisation Re Requested by by

LOCATION:

WORK SITE:

Name: Ref. Ind.: Department: Date:

1.

Permissio Permission n is given to an App Appoint ointed ed P Perso erson n to Immobilise Immobilise Equipme Equipment/ nt/ T Ta ag No:…… No:…………… ………………… …………………. ………...   SIGNED………………………………….RE SIGNED……… ………………………….REFERENCE FERENCE INDICATOR……………………….DATE………………..  

2.

OPERATION STAFF

The The eq equip uipmen mentt is Immobili Immobilised sed from: from:……… ……………… ……………… ……………… …………… …………… ……………… ……………… ……………… …………… …………… ……….. SAFETY LOCK SAFETY LOCKED ED NOS:………… NOS:…………………… ………………… ………………… …………………… …………………… ………………… ………………… …………………… ……………….. …….. and CAUTI CAUTION ON APP APPLIED LIED NOTIC NOTICES ES have been been applied applied at…… at…………… ………………… …………………… …………………… …………………… ……………. …. KEY SAFE NO…………………………………………………………………………………………………………..   SIGNED………………………………TIME…………………………………………………….DATE………………  APPOINTED PERSON

3

Return Return to se servic rvice e appli applied ed for by:…… by:………… …………… …………… …………… ……………… ……………… ……………… ……………… ……………… ………

  SIGNED…………… SIGNED…………………………….. ……………….. REFERENCE INDICATOR…………… INDICATOR……………………………DA ………………DATE……… TE…………….. ……..  

4

APPOINTED PERSON

Permissio Permission ng given iven to APPOINTE APPOINTED D PER PERSON SON to rretur eturn n the the equi equipmen pmentt descri described bed in sectio section n 1 to norma normall service. service.

  SIGNED………………… SIGNED……………………………..R …………..REFERENCE EFERENCE INDICATOR………………………….….DATE…………….. INDICATOR………………………….….D ATE……………..  

5

OPERATION STAFF

I confi confirm rm that that th the e de-is de-isol olat atio ion n requ reques este ted d in secti section on 4 has be been en comp comple lete ted d and CAUT CAUTIO ION N NOTIC NOTICES ES and SAFETY PADLOCKS removed.

  SIGNED……………………………..REFER SIGNED……………………………. .REFERENCE ENCE INDICATOR……………………………...DATE…………….. INDICATOR……………………………... DATE……………..  

APPOINTED PERSON

Whit Wh ite e

Oper Operat atio ion n Sta Staff  ff 

Blue

Appointed st staff 

Pink

Site Copy

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MESC No: 93.55.17.0029

APPENDIX F – WORKING AND AND ACCESS CLEARANCE

1.0

The Working and Access Access Clea Clearanc rances es given in the following T Ta ables of this Append Appendix ix are derived 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 VOLTA VOLTAGE GE conductors.

2.0

 Appendix F1 specifies the Working W orking and Ac Access cess Clearance Clearances s for work on overhead line poles when work work is to t o 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 Clearanc Clearances es for work in substations 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 Clearances that Contractors shou should ld be using when carrying out HIGH VOLTAGE 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 essential when using the Clearances given in this Appendix F.

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 APPENDIX F1

WORKING AND ACCESS CLEARANCES FOR WORK ON OVERHEAD LINES CARRYING LIVE HIGH VOLT VOLTAGE AGE CONDUCTORS [Rule 5.6.4(a) & 7.1.4]

X*

X* A

B

0.3m

2.1m

WORKING LIMIT MARKER 

PLATFORM LEVEL

LADDERS OR  CLIMBING IRONS

POLE PLATFORM OR SCAFFOLDING

SAFETY DISTANCE = X*

SAFETY DISTANCE = X*

APPLICATION FACTOR = 0.3m

APPLICATION APPLICAT ION FACTOR = 2. 2.1m 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

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 APPENDIX F2

WORKING AND ACCESS CLEARANCES FOR WORK IN SUBSTATIONS SUBSTA TIONS CONTAINING EXPOSED LIVE HIGH VOLTAGE VOLTAGE CONDUCTORS CONDUCT ORS [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 APPLICAT ION FACTOR (HORZ.) = 1.5m

C

B = X* + 2.1m & C = X* + 1.5m PERMISSIBLE

B(m)

C(m)

33

2.9

2.3

66

3.1

2.5

132

3.5

2.9

kV

LIMITS OF

C

WORKZONE

PLAN NOTE: for * see Rule 5.6.1

C

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 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 LIMIT MARKER 

kV

A(m)

PLATFORM

kV

B(m)

33

1.1

LEVEL

33

2.9

66 132

1.3 1.7

66 132

3.1 3.5

LADDER OR CLIMBING IRON

POLE PLATFORM OR SCAFFOLD

SAFETY DISTANCE DISTANCE = X*

SAFETY DISTANCE DISTANCE = X*

APPLICATION FACTOR = 0.3m

APPLICATION FACTOR = 2.1m

A = X* + 0.3m

B = X* + 2.1m

X*

0.3m

HORZ. LIMIT

A B

SAFETY DISTANCE = X* VERT. LIMIT

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

A(m)

B(m)

33

1.1

2.9

66 132

1.3 1.7

3.1 3.5

NOTE: for * see Rule 5.6.1

INDEPENDENT SCAFFOLD OR TOWERWAGON

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APPENDIX G - CERTIFICATE OF APPOINTMENT

GG-1) 1)

CERTI ERTIFI FICA CAT TE FO FOR AUTHO UTHOR RIS ISED ED STA STAFF To be used for for all level of authorisation

 

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