2017 04 05 DES System Operating Regulations Revised 2

SYSTEM OPERATING REGULATIONS

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DEPARTMENT OF ELECTRICAL SERVICES

(These System Operating Regulations replace all previous Regulations)

(September 2016)

The following rules have been approved by the DEPARTMENT OF ELECTRICAL SERVICES, PRIME MINISTER’S OFFICE, NEGARA BRUNEI DARUSSALAM, hereinafter referred to as the DES or the Utility, for the protection of the employees, consumers, contractors, electrical workers and all others associated in one way or another with the DES POWER SYSTEM and for the maintenance of a safe and continuous electrical supply. These System Operating Regulations are supplemented by DES Standard Operating Procedures (S.O.P.’s and HSE Procedures).

SERIAL NUMBER:

REV. 2 14th September 2016

This book is the property of the DEPARTMENT OF ELECTRICAL SERVICES


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CONTENTS PAGE

A. GENERAL INSTRUCTIONS ....................................................................5

B. CERTIFICATE OF ACCEPTANCE..............................................................6

SECTION TITLE PAGE

1. DEFINITION OF TERMS.......................................................................7

2. WORK IN AND ACCESS TO SUBSTATIONS AND LIVE ENCLOSURES...................................................................16

3. WORK IN CONFINED SPACES OR ENCLOSURES..........................19

4. WORK ON APPARATUS CONTAINING SF6 (SULPHUR HEXAFLUORIDE) GAS............................................20

5. WORK ON REMOTELY AND AUTOMATICALLY CONTROLLED EQUIPMENT..............................................................23

6. CUTTING OF UNDERGROUND CABLES THAT HAVE BEEN LAID AND/OR INSTALLED........................ …24

7. SUBSTATION KEYS.............................................................................25

8. USE OF MV/HV MEASURING RODS.................................................26

9. MV/HV OPERATING PROCEDURE....................................................27

10. CONTROL OF THE MV/HV SYSTEM: DUTIES AND RESPONSIBILITIES OF SYSTEM CONTROL OPERATOR.............30

11. WORK ON MV/HV MAINS AND/OR APPARATUS.........................32

12. SWITCHGEAR.......................................................................................38


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SECTION TITLE PAGE

13. SAFETY EARTHING........................................................................40

14. TESTING OF MV/HV MAINS AND/OR APPARATUS.................42

15. RE-ENERGISING OF OVERHEAD LINES AFTER THE OPERATION OF PROTECTIVE EQUIPMENT..............................45

16. ISSUE OF WORK PERMIT TO WORK ON MV/HV MAINS AND/OR APPARATUS……...............................................47 17. WORK IN CONJUNCTION WITH BERAKAS POWER

MANAGEMENT COMPANY...........................................................50

18. ENERGISING OF NEW MAINS AND/OR APPARATUS.............54

19. EMERGENCY PROCEDURES IN THE EVENT OF FIRE………..55

20. WORK ON GAS TURBINE GENERATOR PACKAGES AND ASSOCIATED PLANT......................................................................57

REVISIONS

The original document was first issued on 4th October 2010.

The Safety Rules have been removed from the Operating Regulations, 23rd March 2011.


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ANNEXURES 1 – 18

PAGE 1. PERMIT TO WORK TEST ON HV MAINS AND/OR APPARATUS.....................60

2. NOTICE OF ISOLATION OF ELECTRICITY SUPPLY MAINS.............................61

3. PERMIT FOR NON-EMPLOYEES TO ENTER SUBSTATIONS, LIVE ENCLOUSURE AND OTHER DES WORKSITES TO PERFORM SPECIFIED ACTIVITIES.................................................................................................................62

4. DUTIES OF COMPETENT PERSONS OBSERVING, TESTING AND EARTHING OF MAINS AND APPARATUS.............................................................64

5. EMERGENCY TELEPHONE NUMBERS..................................................................65

6. MV/HV SWITCHING REQUEST FORM...................................................................66

7. MV/HV SWITCHING PROGRAMME........................................................................67

8. INJURY ON DUTY REPORT…..................................................................................69

9. PERMIT TO WORK ON/INGENERATION …………….....................................71-80

10. PERMIT TO CARRY OUT HOT WORK....................................................................81

11. ENTRY INTO CONFINED SPACE PERMIT.............................................................82

12. RISK ASSESSMENT FORM AND WORK REGISTER............................................83

13. POINT OF WORK ASSESSMENT …………………………………………………..84

14. WORKERS REGISTER ………………………………………………………………85

15. TESTING AND THE APPLICATION OF PORTABLE EARTHS TO OVERHEAD LINE CONDUCTORS ………………………………………………...86

16. PERMIT TO WORK-EXCAVATION ………………………………………………..87

17. HSE NON COMPLIANCE REPORT ………………………………………………...88

18. PERMIT TO WORK ON MV/HV CABLES …………………………………………89


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GENERAL INSTRUCTIONS GOVERNING THE WORKING OF THE ELECTRICAL POWER SYSTEM OF DES

These System Operating Regulations are the minimum requirements. Additional requirements must be applied where necessary.

1. These operating regulations shall apply to all operating, maintenance and construction

on the MV/HV apparatus of the Department of Electrical Services. Their purpose is to ensure the safety of all persons and to safeguard both apparatus and the continuity of supply.

2. Every employee issued with this book must make himself thoroughly acquainted with,

and shall be held responsible for compliance with, the regulations contained herein.

3. A copy of this book shall be issued to all such employees and other persons as the Senior Engineer may decide upon and the procedure governing the issue, production upon request, and return of such books shall be in accordance with the rules approved by the Director.

4. Circulars or instructions, in addition to and modifications of those contained in this book, may be issued from time to time, and when any regulation is amended or cancelled by such circulars, this book must be corrected accordingly.

5. These regulations are an extension of and must be read in conjunction with the

Government Gazette Part II as amended and the regulations made there under.

6. In cases where the Department of Electrical Services is electrically interconnected with that of another utility, such instructions as are necessary for co-ordinating the operation of the two power systems thus interconnected, shall be issued as a special instruction under the joint authority of DES and the utility concerned.

7. In cases where, for practical reasons, these regulations cannot be complied with and where safety is not compromised, an extension must be applied for in writing to the Director.

8. Any word in these regulations implying the masculine gender shall also indicate the feminine and vice versa.

9. These regulations will come into force on the 1st April 2011.

10. Authorisation certificates shall be valid for a period of three years and such certificates will be withdrawn should employees no longer carry out switching operations as part of their duties.


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ACCEPTANCE CERTIFICATE

I undertake: -

(a) To comply with these System Operating Regulations and the applicable DES

Standard Operating Procedures, as well as to observe safe working practices in the interest of the safety of employees and members of the public and to make myself thoroughly conversant therewith;

(b) To take care of this book of System Operating Regulations and always have it

readily available;

(c) In the event of the book being lost, to immediately report the matter to my supervisor. A charge could be levied for the replacement of the book.

(d) To amend and update the System Operating Regulations promptly as directed;

(e) To return my book of System Operating Regulations to the Director on leaving

the service.

I understand that no changes will be made to these rules unless they have been incorporated in these System Operating Regulations or authorised in writing by the Director.

NAME :

SIGNATURE: ____________________________

DATE : ____________________________

IC NO : ____________________________ NOTE: A signed copy of this section of the System Operating Regulations is to be

filed with the Training Officer in Training Unit.


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SECTION 1

DEFINITIONS OF TERMS

(Throughout these regulations, all references to terms defined in Section one appears in bold face). 1.1 PERSONNEL 1.1.1 AUTHORISED PERSON shall mean a person appointed in writing by the Deputy

Director, or his nominee to carry out switching, isolating, testing and earthing procedures on Medium/High Voltage mains and/or apparatus in liaison with the System Control Operator and to initiate Switching Requests and issue Permits to Work in respect of such mains and/or apparatus.

Operating voltage limits and any restrictions to this authorisation will be indicated on the authorisation document. The Authorised Person shall only operate within the limits and restrictions of his/her authorisation certificate and it is his/her responsibility to advise the System Control Operator if the switching operation is beyond the limits and restrictions of the authorisation.

1.1.2 COMPETENT PERSON shall mean a person who has been adequately trained and

is deemed to have sufficient technical knowledge and qualifications to enable him/her to discharge their duties in accordance with his/her respective duty schedules and where applicable, to perform work safely on the Power System and to appreciate the dangers associated therewith. A ‘Non-Competent Person’ shall mean a person who does not comply with the definition of a Competent Person.

1.1.3 CONTRACTOR shall mean any person or group of persons, not in the employ of the Utility, who has been engaged to undertake work on behalf of the Utility.

1.1.4 DISTRIBUTION ENGINEER shall mean an Engineer who, being an Authorised

Person, is specifically deputed by the Utility to operate the distribution network. 1.1.5 ELECTRICAL ENGINEER shall mean an engineer appointed by the Utility to

assist the Senior Electrical Engineer. 1.1.6 EMPLOYEE shall mean a person employed by Department of Electrical Services

(DES). 1.1.7 GENERATION ENGINEER shall mean the Engineer and/or any other Engineers,

appointed by the Utility for controlling the electrical power generating system and its associated switching devices.


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1.1.8 PERSON-IN-CHARGE shall mean a person, whether an employee or other person,

who has been appointed to be responsible for the safe execution of work on site. A person responsible for ensuring that work/test on MV/HV apparatus covered by a Permit to Work can be carried out within the terms of these regulations. (Authorised/Competent Persons can be deemed Persons-in-Charge by virtue of their status and appointment).

1.1.9 POWER PLANT SHIFT OPERATOR shall mean a person appointed by the Utility

to assist the Power Plant Shift in-charge to operate the generating plant and control switching operations on the distribution system carried out by others and authorised to carry out operations of switching devices in the generating plant including synchronizing at 66kV.

1.1.10 POWER PLANT SHIFT IN-CHARGE shall mean a person appointed by the

Utility to direct the operations of the generating plant and the control of switching operations associated with generation, including synchronizing at 66kV.

1.1.11 SENIOR ELECTRICAL ENGINEER shall mean an engineer appointed by the Utility to be in charge of the overall transmission and distribution systems and authorised to operate all electrical switching devices of the transmission and distribution systems.

1.1.12 SPECIFICALLY TRAINED PERSON shall mean a person who has been

specifically trained to undertake certain tasks on or near live electrical apparatus without being under the constant supervision of a Competent Person. Such persons shall have received a letter of appointment from the Deputy Director, wherein the exact limits of their duties and responsibilities shall be clearly set out.

1.1.13 SUPERVISOR shall mean an employee who is responsible for the supervision of

work. 1.1.14 SYSTEM CONTROL ENGINEER shall mean an engineer appointed by the Utility

and employed to carry out duties at the System Control Centre of the Utility, for the purpose of controlling the generation of electrical energy and its transmission and distribution throughout the Utility's High and Medium Voltage System.

1.1.15 SYSTEM CONTROL OPERATOR shall mean an official on duty normally

stationed at a control centre who is responsible for the general operation of the power system or part thereof.

1.1.16 TRAINEE AUTHORISED PERSON shall mean a person appointed in writing by the Deputy Director, or his nominee, to carry out switching, isolating, testing and earthing procedures on MV/HV mains and/or apparatus in liaison with the System Control Operator and under the direct personal supervision of an Authorised Person.

1.1.17 TRANSMISSION ENGINEER shall mean an engineer who, being an

authorised person is specifically deputed by the Utility to operate the high voltage transmission network.


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1.2 OPERATING TERMS

1.2.1 ALIVE OR LIVE shall mean that any mains and/or apparatus so described is

electrically energised or charged.

1.2.2 APPARATUS shall mean any Generator, transformer, motor, switchgear, link, feeder, test equipment, electrified fence or any other MV/HV plant installed in a substation or on a feeder.

1.2.2.1 HIGH VOLTAGE EQUIPMENT shall mean any electrical apparatus, including any machine, equipment, fitting or cable in which one or more conductors are used or of which they form a part which is normally operated at a voltage of 66 000 volts A.C.

1.2.2.2 MEDIUM VOLTAGE EQUIPMENT shall mean any electrical

apparatus including any machine, equipment, fitting or cable in which one or more conductors are used or of which they form a part which is normally operated at a voltage of 11 000 volts A.C.

1.2.3 APPROVED shall mean approved by the Deputy Director.

1.2.4 AUTO-RECLOSER shall mean a circuit breaker arranged to automatically reclose after tripping for a fault on the power system.

1.2.5 BARRIER shall mean any device designed to restrict approach to areas where the safety of persons may be endangered due to the presence of live electrical conductors/apparatus, excavations or other dangerous conditions. Barricading/ barricade shall have a similar meaning.

1.2.6 BAY - see panel.

1.2.7 BREAKER - see Circuit Breaker

1.2.8 BUSBARS shall mean the continuous electrical conductors connecting a number of circuits and shall include any portions of apparatus permanently connected to them.

1.2.9 BUS COUPLER shall mean a circuit breaker or isolator designed to connect or disconnect duplicate busbars.

1.2.10 BUS SECTION shall mean a circuit breaker or isolator installed to connect or disconnect sections of a busbar.

1.2.11 CABLE shall mean any conductor, including its terminations, used for distributing electrical energy.

1.2.12 CIRCUIT shall mean an arrangement of conductors for the purpose of carrying electric current and shall include the apparatus provided for completing the circuit.


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1.2.13 CIRCUIT BREAKER shall mean switchgear designed to make or break an electrical circuit under normal or fault conditions.

1.2.14 CIRCUIT MAIN EARTH - An earth connection to the circuit and apparatus on which work is to be carried out and for which a Permit to Work is issued.

1.2.15 CONTROL CENTRE (SCADA) means a place from where controlling and/or directing the safe operation and distribution of power is carried out.

1.2.16 CONTROL PANEL shall mean a panel on which are mounted control switches and other equipment for controlling the operation of apparatus.

1.2.17 CONTROL SWITCH shall mean the switch or device, which controls the operation of circuit breaker, switch, link or other apparatus.

1.2.18 CONTROL POINT shall mean a position on the system where a main and/or apparatus can be switched, isolated and earthed.

1.2.19 DANGER shall mean risk or loss of life, limb or health from electric shock, burn or other injury or from fire attendant upon generation, distribution or utilization of electrical energy.

1.2.20 DANGER DO NOT MAKE ALIVE NOTICE shall mean a notice indicating that the person, whose name appears thereon, is working on the circuit to which the notice is attached and the circuit must not be made alive until such person removes the notice.

1.2.21 DANGER DO NOT REMOVE EARTH NOTICE shall mean a notice indicating that the person, whose name appears thereon, is working on the circuit to which the notice is attached and the earth must not be removed until such person removes the notice.

1.2.22 DANGER TEST IN PROGRESS NOTICE shall mean a notice indicating that a person from the Protection and Test Division is conducting a test.

1.2.23 DANGER NOTICE shall mean a general notice in approved form calling attention to the danger of approach to or interference with mains and/or apparatus.

1.2.24 DEAD shall mean at or about zero potential and isolated from any live system.

1.2.25 DES shall mean the Department Of Electrical Services, Prime Minister’s Office.

1.2.26 DES CONTROL POINT shall mean the switch or device belonging to the DES which controls the operation of a circuit breaker, switch, link or other apparatus and such a switch or device is directly connected via a cable to a main 11kV DES substation.

1.2.27 DIAGRAM - OPERATING OR SYSTEM - see Operating Diagram or System Diagram.


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1.2.28 DISTRIBUTION PILLAR shall mean a device where two or more circuits can be connected together within a cubicle.

1.2.29 DISTRIBUTION SYSTEM shall mean all apparatus and feeders used in connection with distribution of electricity.

1.2.30 EARTHED shall mean connected to the general mass of earth in such a manner as will ensure at all times an immediate safe discharge of electricity.

1.2.31 EARTHING OR “TO EARTH” shall mean the operation of connecting any circuit to earth after it has been isolated and tested.

1.2.32 EARTHING EQUIPMENT shall mean mechanically, electrically or manually operated switches or manually applied equipment for effectively connecting an isolated circuit to earth. Such equipment shall include approved portable earthing equipment, earthing disconnects, earth links or devices incorporated in the design of or supplied for use with switchgear.

1.2.33 EMERGENCY SWITCHING shall mean the opening only of switchgear as may be necessary in order to avoid imminent danger to persons or damage to mains and/or apparatus.

1.2.34 ENCLOSURE shall mean an indoor or outdoor site where electrical apparatus is enclosed and the access locked to prevent unauthorised entry.

1.2.35 FEEDER shall mean a line or cable into or from a substation or other apparatus.

1.2.36 FIXED EARTHING SWITCH OR DEVICE shall mean an earth switch or the circuit earthing facilities provided on a circuit breaker.

1.2.37 GAS INSULATED SWITCHGEAR (abbreviated GIS) shall mean totally enclosed switchgear whose conductors and bus bars are insulated by an inert gas such as Sulphur hexafluoride (SF6).

1.2.38 GENERATOR shall mean a rotating electro-mechanical machine used to generate alternating current and voltage at a frequency of 50 hertz.

1.2.39 HIGH VOLTAGE (abbreviated HV) shall mean a voltage of 66 000 volts.

1.2.40 IN COMMISSION shall mean the state of apparatus, which is available for immediate use although it may not actually be in service.

1.2.41 INTERLOCK shall mean an electrical and/or mechanical device for ensuring that certain operations are performed in a pre-determined sequence.


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1.2.42 ISOLATE shall mean physically disconnecting the apparatus from all possible sources of electrical potential. In this context isolating may be obtained by:

opening and/or removing of fuses; opening of links; removal of jumpers; withdrawal of truck type switchgear;

1.2.43 ISOLATOR shall mean the apparatus provided for the purpose of isolating mains and/or apparatus.

1.2.44 LINE shall mean an exposed overhead feeder, and includes the supports and the cable, where provided, between the supports and/or the substation apparatus.

1.2.45 LINK shall mean a device other than a switch provided for the purpose of isolating electrical mains and/or apparatus.

1.2.46 LINKING shall mean the opening or closing of isolators.

1.2.47 LINK STICK shall mean an approved insulated rod designed for specific voltages, used for the application of portable earths, testing and operating links and drop out fuse links.

1.2.48 LIVE - see Alive.

1.2.49 LIVE ENCLOSURE shall also mean any room, chamber, yard or enclosed area in which it is possible for a person, from ground or floor level, to make inadvertent contact with or infringe safety clearance to live conductors or apparatus. Any room, chamber or enclosed area fitted with automatic fire protection equipment shall be treated as a live enclosure until the automatic fire protection equipment is isolated.

1.2.50 LIVE TESTER shall mean a device, which is required to make contact with the conductor under test in order to determine whether the conductor is LIVE or DEAD.

1.2.51 LOCK OUT shall mean that an auto-recloser has automatically gone through its tripping and closing sequence to its final open state.

1.2.52 MAINS shall mean the cables or overhead lines forming part of the utility’s distribution system.

1.2.53 MAJOR SUBSTATION shall mean a transmission substation with a primary voltage of 66 000 V or higher.

1.2.54 MEDIUM VOLTAGE (abbreviated MV) shall mean a voltage of 11 000 volts.


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1.2.55 NETWORK shall mean a portion of the electrical distribution system operating at a specified voltage.

1.2.56 OPERATING shall mean the carrying out of switching, isolating, testing and earthing of electrical mains and/or apparatus.

1.2.57 OPERATING DIAGRAM OR SYSTEM DIAGRAM shall mean the diagram or computer record kept in the Control Room/s provided to show the operating position of all switches, disconnects, links and earthing devices indicating the state of the mains and/or apparatus.

1.2.58 OUT OF COMMISSION shall mean the state of any apparatus, which has been taken out of service and is not available for immediate use.

1.2.59 PANEL OR BAY (see definition of SWITCH PANEL).

1.2.60 PORTABLE EARTHING EQUIPMENT shall mean approved portable equipment for connecting an isolated circuit to earth. See Earthing Equipment.

1.2.61 PROXIMITY TESTER shall mean a device which is not required to make contact with the conductor under test in order to determine whether the conductor is LIVE or DEAD.

1.2.62 RING MAIN UNIT/PANEL shall mean apparatus comprising two or more interconnected switches.

1.2.63 SAFETY CLEARANCE is the minimum distance any part of a person’s body or any work tool may encroach to any unearthed and unscreened MV/HV conductor.

Rated Voltage Clearance

Up to 11kV 1.0 m

Exceeding 11 kV but not exceeding 66 kV 2.0 m

Note 1: Safety Clearance distances are applied when working in the vicinity of live MV/HV conductors and it is the minimum distance a person may encroach to such conductors.

Note 2: The term Close Proximity shall mean the breaching of the Safety Clearance as defined.

1.2.64 SAFETY EQUIPMENT shall mean any equipment or article, including protective clothing, which is manufactured, provided, installed or used in the interest of safety.

1.2.65 SAFETY/PERSONAL PADLOCK shall mean an approved lock or suite of locks for which only one unique key is available, and used by the Authorised


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Person to lock off Control Points when issuing a Permit to Work.

1.2.66 SAFETY TESTING shall mean the testing of mains and/or apparatus to ascertain whether it is alive or dead by means of approved equipment provided for the purpose.

1.2.67 SCREENED shall mean completely surrounded by earthed metal or protected from accidental contact by a fixed barrier of non-conducting material.

1.2.68 SHUTTERS shall mean the mechanically operated safety covers for or on orifices preventing access to live parts of metal clad switchgear.

1.2.69 SUBSTATION shall mean the site on which any transforming, switching or linking apparatus forming part of the power system is situated. The term substation includes the associated buildings and control equipment.

1.2.70 SUPERVISION shall mean the overseeing of the actions of a person or persons so as to prevent any act that could be dangerous or in contravention of these regulations.

1.2.71 SWITCH shall mean a device other than a circuit breaker, designed for making or breaking a limited flow of electric current. The term includes air break switches disconnects and similar devices.

1.2.72 SWITCH PANEL shall mean all the apparatus comprising any one circuit of a switchboard from and including the busbar to the cable.

1.2.73 SWITCHING PROGRAMME shall mean an approved program produced by Control Centre, which documents a series of sequential switching operations on MV/HV Mains and/or Apparatus, to be carried out by an Authorised Person who may be assisted by a Competent Person where applicable.

1.2.74 SWITCHING REQUEST shall mean an electronic request initiated by an Authorised Person who seeks approval to undertake switching on MV/HV mains or apparatus.

1.2.75 SWITCHBOARD shall mean two or more switch panels with interconnected busbars.

1.2.76 SWITCHPILLAR shall mean a device at which two or more circuits can be connected together within a cubicle (see distribution pillar).

1.2.77 SWITCHING shall mean opening or closing of circuit breakers/switches or links.

1.2.78 SWITCH ROOM shall mean a room or chamber containing switchgear.

1.2.79 SWITCH YARD shall mean any outdoor enclosed area in which live


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conductors or live parts of electrical apparatus working at high voltages are accessible, but situated in such a position that inadvertent human contact therewith is not possible from ground level.

1.2.80 SYSTEM shall mean the complete electrical network operated by the DES (Distribution Electrical Services).

1.2.81 TEST (SAFETY TESTING) shall mean the use of approved equipment to ascertain if electrical apparatus, conductors or cables are energised or dead.

1.2.82 TRANSMISSION LINE shall mean an overhead line operating at nominal voltages of 66 000 Volts.

1.2.83 WARNING NOTICE shall mean any notice provided to show that work is in progress on mains and/or apparatus and/or indicate any special operating conditions applicable thereto.

1.2.84 PERMIT TO WORK shall mean a written declaration on a Permit to Work form, signed by the Authorised Person, witnessed by the Competent Person and issued to the Person-in-Charge, informing the latter that the apparatus to be worked on has been made safe as detailed. Annexure 1.

1.2.85 PERSONAL WORKING EARTH shall mean approved earthing equipment applied to overhead conductors by a person as an additional safety measure when working at a position remote from the earthing equipment applied by the Authorised/Competent Person and placed in such a position that it is visible from, and applied as close as practicable to the point of work

1.2.86 WORK shall mean repair and maintenance work, additions, modifications to existing equipment, testing and any other work which involves working on electrical conductors, secondary and control equipment and wiring which form part of the electrical system.

1.2.87 WORKPLACE means a place at which a crew works, or a number of crews work together on the same mains or apparatus.

SECTION 2


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2.0 WORK IN AND ACCESS TO SUBSTATIONS AND LIVE ENCLOSURES 2.1 No person other than a Competent Person, whether DES employee or other shall

enter, or be required or permitted to enter, any substation or live enclosure unless all live conductors, which are not adequately insulated against inadvertent contact, are effectively screened off temporarily. A Competent Person may, however, be assisted by other persons under his immediate personal supervision, and furthermore, Non Competent Persons will be permitted to enter and work in substations, or live enclosures, if under the immediate personal supervision of a Competent Person.

2.2 In order to comply with the foregoing, every Competent Person working in a

substation or live enclosure shall:

2.2.1 Accept responsibility for all persons allocated to assist him in the course of his duties, and for Non Competent Persons personally supervised by him,

2.2.2 At all times exercise proper control over these persons and issue explicit and proper instructions,

2.2.3 Ensure that only necessary persons enter a live HV yard or enclosure,

2.2.4 Ensure that all persons under his control are warned of the danger of inadvertent contact with live conductors and apparatus,

2.2.5 Be responsible after entering such premises for ensuring that no unauthorised person shall gain access thereto,

2.2.6 Be responsible for the barricading and/or demarcating of any doors or gates left open during the work period,

2.2.7 Erect temporary barriers to prevent persons coming into inadvertent contact or close proximity with adjacent live mains/apparatus,

2.2.8 On leaving the substation or live enclosure be responsible for ensuring that the door or gate is locked and that the key is removed there from,

2.2.9 Where adjacent equipment is live, delimit the section which is set aside for work to be carried out by the use of approved barriers arranged so that the Safety Clearances set out in 1.2.63 are complied with.

2.2.10 Delimit the area at ground level and if applicable the structure or apparatus on which the work is to be carried out.

2.3 If the work cannot be carried out without leaving ground level, or platform or access ways, the minimum Safety Clearances must still be maintained. (Refer 1.2.63).


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2.4 If the work is such that these Safety Clearances are insufficient to avoid danger, other suitable arrangements shall be made to provide the requisite degree of safety.

2.5 Columns supporting structures carrying live electrical apparatus or conductors shall not fall within a delimited safe working section. Whenever possible the access path to the safe working section shall also be delimited by barriers on either side of the path in accordance with these requirements. If this is not done, persons moving from the live yard or enclosure entrance to the safe working section, and return, shall do so under the supervision of a Competent Person.

2.6 When it is impracticable to provide adequate barriers and screens, arrangements shall be made for a Competent Person/s to watch continuously the men at work to ensure that they incur no risk.

2.7 Use of portable ladders and long objects where there are exposed live conductors. (Gantries)

2.7.1 Portable ladders and other long objects shall not be used without the permission of an Authorised Person who shall define the conditions of use to the person in charge of the work. The movement and erection of such ladders shall then be carried out only under the direct supervision of a Competent Person, and when moved at ground level ladders shall be carried only in a horizontal position and as near the ground as practicable.

2.7.2 When a ladder is in use an Authorised Person shall supervise all movements within the area.

2.7.3 When work is to be carried out under a Permit to Work and it involves the use of a ladder for work on dead electrical conductors, or on non-electrical items when there are other live electrical conductors in the same substation or other areas, the above authority to use a ladder shall be given by the Authorised Person in writing on the Permit to Work.

2.7.4 Ladders must not be kept in substations or other areas where there are exposed live high voltage conductors unless they are securely locked to a secured anchorage, and may only be released by an Authorised Person, who shall be responsible for making sure that the ladders are returned to their storage positions and locked when work is completed or suspended.

2.7.5 When ladders, cranes or other equipment such as preformed scaffolding are taken into or out of a substation, the route to be followed shall be agreed by an Authorised Person. Cranes or other equipment shall be effectively connected to the substation earthing system as soon as practicable. The limits of operation of such equipment shall be defined by an Authorised Person and described to the person in charge of the work and thereafter the equipment shall be erected or moved only within these limits under the direct supervision of a Competent Person.

2.7.6


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2.8 Work in substations and live enclosures by non-employees, e.g. contractors.

2.8.1 Work undertaken by non-employees e.g. contractors, in substations or live enclosures shall be performed under the constant supervision of a Competent Person/s to ensure that no risk is incurred unless the area in which the work is to be performed and access paths are adequately screened and barricaded to prevent inadvertent contact with live apparatus, and such that the necessary Safety Clearances set out in 1.2.63 are maintained and a Permit for Non-Employees and Non Competent Persons to enter substations and live enclosures (see Annexure 3) has been issued to the Person/s-in-Charge.

2.8.2 Before being permitted access, the manner and extent to which it is safe to enter and work shall be explained to, and understood by, the non-employee who is to be the Person-in-Charge of the work.

2.9 Visitors must be issued with a Permit (see Annexure 3) before being allowed access to substations and live enclosures and they must be accompanied by a Competent Person. They will not be required to sign off the completion portion of the permit. Where a general indemnity form has been signed by the visitor, no permit will be required.

2.10 Personnel shall ensure that exit from their working or operating position is unimpeded whilst they are in any substation building or yard. Where operations are taking place within any switch room, doors at opposite ends of the switch room shall be open wherever practicable.

2.11 Obstructions created by the placing of materials, clothing, tables, stools and personal equipment are not permitted.

2.12 Strict precautions shall be taken to ensure that flammable materials such as spilled oil, compound, cable wrappings, waste, etc. is collected and removed from the vicinity of substations.

2.13 On the completion of work, the interior and exterior of substations shall be left in a clean and tidy condition.

2.14 Substations and live enclosures must be kept closed and locked when unattended.


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SECTION 3

WORK IN CONFINED SPACES OR ENCLOSURES

3.0 A confined space is any enclosed space, above or below ground, where a hazard to

health may exist due to the lack of oxygen, the presence of a suffocating, toxic or flammable, or an actual or potential hostile environment. A confined space may include manholes, vessels, transformer tanks, chambers, oil tank compartments, substation basements, generator exhaust stacks, water or diesel fuel storage tanks etc.

3.1 NO PERSON shall enter a confined space or enclosure until the degree of oxygen has

been established by utilising an approved monitor, and as the case may be, it has been adequately cleared of any dangerous liquid or purged with air to clear any dangerous concentration of gas or fumes by using ventilation fans;

3.2 In the case of vessels, transformer tanks, chambers, etc., at least one other person shall remain in attendance, outside of, and, next to the entrance thereof whilst any person is within. Once an access point into a confined space (e.g. manhole) has been created the area operator shall put a tag holder in place next to the access point. The text on the Tag Holder is “DO NOT ENTER” in red letters.

3.3 Entry into the confined space by the Permit Holder is not permitted unless the area operator or Person-in-Charge:

• has taken the gas test including other specified tests in the permit (e.g. H2S) for every relevant entry point

• has filled in the entry tag

• has taken all precautions just prior to entry and has found them fulfilled

3.4 Where there is the possibility of the presence of flammable liquids, gases or fumes, effective precautions must be taken to prevent ignition by the avoidance of open sources of heat or light and the formation of sparks by ferrous tools, the generation of static electricity by clothing or by any other means.

3.5 Confined space entry Permit must be issued before accessing the confined space, and a plan of rescue must be stated on the Permit (Annexure 11).

3.6 A confined space permit may only be issued by a person to other persons who have been trained and certified to enter confined spaces.


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SECTION 4

WORK ON APPARATUS CONTAINING SF6 (SULPHUR

HEXAFLUORIDE) GAS

4.1 Properties of SF6

4.1.1 Odourless, colourless, heavy gas that spreads slowly in the atmosphere, although non-toxic, will not sustain life.

4.1.2 Commercially available in steel containers under a pressure of 22 atmospheres

at 20 Degrees Celsius in liquid form. The normal precautions of handling portable pressurized vessels apply:

• Keep away from heat

• Filling from the containers to be effected through pressure reducers.

4.1.3 Decomposition or partial decomposition of the gas yields gaseous by-products (Sulphur fluorides) and powdery solid residues (metallic fluorides and Sulphides). Contact with these by-products on damp skin can cause severe irritation (especially eyes, mouth and respiratory tract). The gaseous by-product has a characteristic putrid smell similar to that of rotten eggs.

4.1.4 Although inhalation of a small quantity of the gas is not harmful, the

decomposition by-products are toxic in greater amounts and can be a health hazard. In excessive quantities over long periods however, unconsciousness or even death may result from oxygen starvation.

4.2 Persons experiencing any irritation of the skin, eyes, nose or mouth, or who become

aware of a pungent smell or unpleasant odour when in the vicinity of SF6 filled apparatus, must move away into the fresh air or make use of approved breathing apparatus and protective clothing.

4.3 When opening up an SF6 filled chamber for the first time after it has been in service,

or when handling molecular sieves or special filters designed to absorb gaseous breakdown products, approved protective clothing must be worn as described in the above-mentioned Code of Practice. After use, protective clothing must be properly washed and de-contaminated.

4.4 As SF6 is a heavy gas, its presence in trenches and basements must always be

considered where this can occur. If there is any doubt, the presence of sufficient oxygen must be established by using an instrument approved for the purpose.


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4.5 Before entering or working in a basement, or an enclosure that has previously been

charged with SF6 gas, the requirements of the System Operating Regulations must be complied with (hard hats are to be worn on entrance to substation basements).

4.6 Working with SF6

4.6.1 Where necessary exhaust the gas to atmosphere, away from the equipment building or enclosure and take special care to ensure that there is no collection of gas at low level points (e.g. cable trenches or basements). Use forced ventilation to achieve this where necessary.

4.6.2 If the SF6 gas is to be recovered for re-use. Storage in receivers shall be

effected by means of gas recovery equipment observing the following requirements:

The weight of SF6 to be stored shall be less than 1/40 of the volume of the receiver (expressed in cubic inches)

Receiver volume = 6000 cu in, maximum weight of SF6 to be stored is equal to 1/40 x 6000 = 150 lbs

4.6.3 Fill the compartment with compressed air and drain to atmosphere, repeat 2 or

3 times, for effective removal of any entrapped gas. In compartments where no electric arcing has taken place previously (i.e. containing pure SF6) forced ventilation of the compartment is sufficient.

4.6.4 Open the compartment and use a vacuum cleaner to remove any powdery

residues of gas decomposition (metal Fluorides and Sulphides). Goggles, protective clothing and respirators (if necessary) shall be worn in this operation.

4.6.5 Before entering compartment, check for gas free condition by one of the

following methods:

4.6.5.1. By means of an approved gas detector. 4.6.5.2. Drain gas from the lowest point of compartment into a glass jar.

Insert a burning flame into the glass jar. If gas is present the flame will be extinguished.

4.6.6 Whilst work proceeds inside the compartment, standby help shall be available

at all times in case immediate assistance is required. Rescue ropes and lifting tackle shall be provided for this purpose where necessary.


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4.7 Work on GIS Switchgear compartments

Due to the modular design of GIS switchgear and in particular, the segregated gas compartments, special safety measures are necessary prior to carrying out work on one or more of these gas compartments:

4.7.1 Prior to either the topping up or evacuation of gas from any GIS compartment,

the correct isolation of all electrical conductors or apparatus contained within the compartment shall be carried out prior to the gas work commencing.

4.7.2 Notwithstanding the foregoing requirements, in the case of the evacuation of

gas from a compartment, all gas compartments adjoining the compartment to be evacuated shall be electrically isolated due to the risks associated with a potential gas leak across the gas seal from an adjacent pressurized compartment.

4.7.3 Where the work on a gas compartment is restricted to the topping up of gas

only, it is not necessary to electrically isolate the adjoining gas compartments.


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SECTION 5

WORK ON REMOTELY AND AUTOMATICALLY CONTROLLED EQUIPMENT

5.1 No work shall be performed on remotely or automatically controlled equipment, such as circuit breakers, isolators, tap changing gear, pumps, fans, air conditioners, compressors, etc. unless all remote control or automatic features are rendered inoperative.

5.2 No work shall be performed on the automatic or remote controlling equipment whilst work is in progress on the controlled equipment.

5.3 Whenever “Danger Do Not Make Alive” labels have to be hung in order to comply with these System Operating Regulations, such a label shall be hung at each point at which the equipment can be operated or controlled, with the exclusion of SCADA control equipment operated by a System Control Operator in a control centre.


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SECTION 6

CUTTING OF UNDERGROUND CABLES THAT HAVE BEEN LAID AND/OR INSTALLED

6.1 Whenever an MV/HV underground cable that has been laid and/or installed has to be

cut, then irrespective of whether it is in commission or not, it shall be identified and proved dead by the Authorised Person utilizing an approved cable spiking gun.

6.2 Cables spiked in error must be reported to the Deputy Director immediately. 6.3 If there is any doubt about the identity of the cable, the matter must be referred to the

Supervisor before the cut is made. 6.4 Subject to the provisions of these System Operating Regulations, the cutting of a

cable that has been laid and/or installed, or the completion of the cutting thereof may only be done by, or under the constant personal supervision of an Authorised Person, a Competent Person or the Person-in-Charge.

6.5 Subsequent cutting of a previously cut cable may be done without following the

procedures laid down in Section 6.1, provided that this is done by, or under the constant personal supervision of the Person-in-Charge, and provided further that the cut end of the cable is in sight, and the cable is entirely exposed, and can be physically traced from that end to the point of cut.


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SECTION 7

SUBSTATION KEYS 7.1 Substation keys may only be issued to Competent Persons who are competent to enter

substations and live enclosures. 7.2 The Deputy Director is responsible for the issue of all substation keys. 7.3 Keys will only be issued on written request of the Section Head of the person

concerned and keys may not be lent or handed over to Non Competent Persons. 7.4 Keys shall only be issued to competent non-employees who are in possession of a

letter of authority issued by the H.O.D. Transmission and Distribution or who are permitted to work in an area in a substation or live enclosure that has been made safe without the constant watch of a Competent Person.

7.5 Any person to whom a substation key has been issued is responsible for the

safekeeping of that key and shall return it on demand on leaving the service or when it is no longer required, to the Deputy Director.

7.6 The loss of a key shall be reported as soon as possible to the Deputy Director. 7.7 Un-authorised duplication of substation keys is prohibited.


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SECTION 8

USE OF MV/HV MEASURING RODS 8.1 Only approved measuring rods, link sticks, telescopic sticks or electronic measuring

instruments may be used for measuring the heights of live overhead conductors. 8.2 Telescopic devices must be fully rated for the voltage on which they are to be used.

Those of the telescopic type must be sufficiently extended to comply with their voltage rating.

8.3 Persons using telescopic devices must wear rubber gauntlets. 8.4 Telescopic sticks may be extended section by section in the vertical position. The

stick should then be marked and the number of extended sections counted. The stick should then be collapsed and extended again in the horizontal position when the measurement should be taken.

8.5 Under no circumstances may measuring tapes or other items be attached to the rod or

link stick when the measurement is taken. (Most linen measuring tapes have metallic threads running through them and are conductive).

8.6 Measuring rods and link sticks must be in good condition and must be cleaned and

examined before use. 8.7 Only Authorised Persons may use MV/HV measuring rods and sticks and then only

for those voltages for which they are authorised, unless exempted in writing by the H.O.D. Transmission and Distribution.


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SECTION 9

MV/HV OPERATING PROCEDURE

9.1 No switching shall be carried out without an authorised switching request or switching programme as applicable, except in the following cases:

9.1.1 In the case of 66kV or 11kV, switching authorised by the Senior Engineer: Transmission and Distribution Operation or, in his absence, the Head of Department, Transmission and Distribution.

9.1.2 Any Emergency Switching where any delay in switching may lead to

catastrophic consequences, such as injury or death to personnel or damage to the Power System.

9.2 Where a sequence of switching operations is required, a switching programme

(Annexure 7) shall be prepared by the System Control Operator. This shall be checked by the Authorised Person requiring the switching and approved by the Senior Engineer: Transmission and Distribution Operations or, in his absence, the H.O.D. Transmission and Distribution.

9.3 Any person carrying out work on the Utility's MV/HV system or, entering the Utility's premises in which there are high or medium voltage apparatus, shall ensure that he has a means of communication with the System Control Operator on duty at all times, e.g. by portable hand phone.

9.4 Immediately before any switching, isolating, testing and earthing is commenced on MV/HV mains and/or apparatus, the System Control Operator shall be notified and the Authorised Person carrying out the operations shall confirm that he is at the correct operating location.

9.5 The Authorised Person shall carry out switching operations in liaison with the System Control Operator and in compliance with clause 9.6 below. The Authorised Person shall without undue delay, inform the System Control Operator of the completion of each operation, or set of operations.

9.6 All communication from and messages to the System Control Operator relating to the operation of apparatus shall be given in detail by the Authorised Person, without abbreviation, stating the location, name of the apparatus and the nature of the operation as is specified on the approved switching programme where applicable. The System Control Operator shall repeat it in similar detail, and the Authorised Person shall confirm the correctness of the repetition.


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9.7 An Authorised Person must be accompanied by a Competent Person who is familiar with switching operations whenever such operations involve earthing, or the issue of a MV/HV Permit to Work at a workplace. The duties of Competent Persons with respect to switching are as follows.

9.7.1 They must be familiar with the System Operating Regulations and specifically the safe operation of MV/HV mains and/or apparatus.

9.7.2 They must verify that the Authorised Person is at the correct isolation/earthing device.

9.7.3 They must be conversant with the switching and/or earthing operations to be carried out.

9.7.4 They must observe that the switching operations are carried out in the correct sequence and in accordance with the approved switching programme.

9.7.5 They must be physically capable of assisting the Authorised Person.

9.7.6 They must be conversant with emergency and first aid procedures.

9.8 On any one occasion, only one Authorised Person shall be responsible for all switching, isolating, testing and earthing at a control point.

9.9 In the case of DES control points interconnected with a BPMC substation, switching, isolating, testing and earthing must be performed by a DES employee, but must be witnessed by a BPMC Authorised Person. The earthing must be inspected by the Authorised Person and found to be satisfactory in terms of these regulations. The isolation, testing and earthing of DES control points must be communicated back to the System Control Operator by the Authorised Person who witnessed such operations.

9.10 Whenever MV/HV mains and/or apparatus are to be earthed, the circuit must be isolated at each source of supply before testing and earthing, or where testing is not possible (RMU’s), earthing only is carried out. Upon completion the Authorised Person shall inform the System Control Operator accordingly.

9.11 The foregoing procedure is to be continued until all the operations necessary to switch, isolate, test and earth the mains and/or apparatus to be worked on, have been completed.

9.12 Except in the case of emergency switching, the Authorised Person shall complete a switching request form indicating the designation of the mains and/or apparatus required to be taken out of service and shall submit this to the System Control Operator.


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9.12.1 A minimum of 48 hour notice is required by the System Control Operator for planned work. Requests for operating procedures to be carried out for planned work in instances where switching request forms have not been submitted in advance, may only be made by the Senior Engineer: Transmission and Distribution Operations or a more senior official.

9.12.2 The Authorised Person shall confirm with the System Control Operator that his request has been granted and ascertain whether there are any special conditions applicable to the granting of this request.

9.12.3 Should a request not be granted, the System Control Operator shall advise the Authorised Person without undue delay, the work shall then be re-scheduled to a mutually acceptable date and time.

9.13 It is the responsibility of the Authorised Person to return the switching to normal in liaison with the System Control Operator and in accordance with the approved switching programme.


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SECTION 10

CONTROL OF THE MV/HV SYSTEM: DUTIES AND RESPONSIBILITIES OF SYSTEM CONTROL OPERATOR

10.1 System Control Operators are responsible for carrying out the following duties in

addition to any duties assigned elsewhere insofar as they may apply:

10.1.1 Ensuring the safety, insofar as correct operating sequence applies, of Authorised Persons carrying out switching, isolating, testing and earthing operations at control points.

10.1.2 Keeping a record of the time and details of all operations carried out in liaison

with the Authorised Person in the approved recording system in the Control Centre.

10.1.3 Keeping a record of each Permit to Work issued, which includes the name of

the Authorised Person, the serial number, and the mains and/or apparatus concerned.

10.1.4 Keeping a record of earths applied at control points at all sources of supply.

10.1.5 Keeping a record of the times and details of emergency switching together with

the names of persons who have carried out these operations and the reasons therefore.

10.1.6 The updating of the system diagrams in the control rooms in such a way as to

indicate at all times the state of the system, positions of control point earths throughout the system and the names of the persons to whom mains and/or apparatus have been handed out. The operating position of all spare circuit breakers/apparatus shall also be indicated.

10.1.7 Giving to the relieving System Control Operator all information as to the state

of the system as may be necessary to ensure the proper discharge of his duties. It shall also be the duty of the System Control Operator taking over to obtain this information and to familiarise himself with the relevant entries in the records.

10.2 Responsibilities for Switching

10.2.1 No routine switching, isolating, testing and control point earthing operations on

the MV/HV system shall be carried out at any point without informing the System Control Operator. The person authorised to carry out such operating shall not delegate his authority to any other person, provided that Trainee Authorised Persons may switch, isolate, test and apply earths under the direct personal supervision of the Authorised Person who shall remain fully responsible for the operations.


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10.2.2 Competent persons may apply personal working earths on overhead lines only, or may assist the Authorised Person in doing so.

10.2.3 Whenever MV/HV mains and/or apparatus are to be earthed at control points,

the Authorised Person shall “test” before earthing”, provided that testing is possible before earthing.

10.2.4 When it is required to energize any mains and/or apparatus that have been

isolated and earthed, Authorised Persons shall verify by personal inspection of the points at which the mains and/or apparatus are earthed and then in liaison with the System Control Operator remove the control point earths.

10.3 Issue and Receipt of Operating Instructions

10.3.1 System Control operations relating to routine switching, isolating, testing and

earthing operations shall be given in detail by the Authorised Person without abbreviation, stating the location, name of the apparatus and the nature of the operation. The Control Operator shall repeat it in similar detail, and the Authorised Person shall confirm the correctness of the repetition. The completion of any operation, or set of operations, shall be reported without undue delay to the System Control Operator.

10.3.2 Subject to the provisions of the Section dealing with “MV/HV Operating

Procedure” all operating procedures shall be performed in their correct sequence and no operation, or set of operations shall be carried out by the Authorised Person until the preceding operation, or set of operations have been completed.

10.4 Use of Operating Diagrams

The system diagram in the control centre shall be altered, where applicable on, the completion of any operation, or set of operations, by the System Control Operator, and such operation, or set of operations, shall not be deemed to be completed until the system diagram has been altered to show the correct operating conditions of the mains and/or apparatus affected.


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SECTION 11

WORK ON MV/HV MAINS AND /OR APPARATUS

11.1 Work shall not be performed within Safety Clearances of MV/HV mains and/or

apparatus unless such mains and/or apparatus have been isolated and earthed and a Permit to Work has been issued.

Persons-in-Charge shall understand that they have a responsibility for both their own personal safety and that of others working with them, and shall decline to accept the Permit to Work unless entirely satisfied.

11.2 Personal working earths shall be applied to, and retained on, all overhead conductors as an additional safety measure by the Person-in-Charge when working at any position remote from the control point earth applied by the Authorised Person. Personal working earths may only be applied to items of equipment other than overhead conductors (i.e. busbars) on the written instruction of the Authorised Person as recorded on the Permit to Work.

Because of the danger of induced voltages or static charges on overhead conductors, particular attention is drawn to the necessity of applying and maintaining portable working earths as close as practicable on both sides of the workplace.

11.3 The following work may be performed on apparatus whilst alive:

11.3.1 Filtering of transformers 11.3.2 Changing of silica gel.

11.3.3 Drawing off of oil samples from transformers.

11.3.4 Minor repairs to the external parts of transformers and switchgear and

ancillary substation equipment that can be performed safely and without infringing Safety Clearances.

11.4 An Authorised Person shall comply with the following when carrying out isolation,

testing and earthing on MV/HV mains and/or apparatus:

11.4.1 An Authorised Person, who must be accompanied by a Competent Person familiar with switching operations, shall isolate at a control point at each source of supply by means of the switches, switch-fuses, isolators or links.

11.4.2 The mains and/or apparatus must wherever possible be tested using appropriate approved testing equipment in order to ensure that the mains and/or apparatus are dead.


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11.4.3 The mains and/or apparatus must be earthed in accordance with Section 13 -

Safety Earthing. 11.4.4 The earthing equipment at the control point/s must be left on the mains and/or

apparatus until the work is completed, provided that if it is necessary to remove earthing equipment at the control points to carry out testing, including fault location, continuity, insulation, pressure testing, phasing and sheath testing, or any other work that cannot be performed with the earthing applied, this must be communicated to the System Control Operator who shall record the removal of earths. All associated safety procedures shall be observed and the earthing is to be re-applied immediately after completion of the work.

11.4.5 “Danger Do Not Remove Earth” notices must be applied at control points that

have been isolated and earthed, and “Danger Do Not Make Alive” notices shall be applied at control points that have been isolated only, at sources of supply.

11.4.6 Personal padlocks must be applied at control points that have been isolated

and earthed, or isolated only, at sources of supply, if locking facilities exist. 11.4.7 Control points at private consumer substations, which have been isolated and

earthed by the consumer’s staff, shall be checked by an Authorised Person to ensure that the operations have been correctly executed in terms of these System Operating Regulations, and if the Authorised Person is satisfied, “Danger Do Not Remove Earth” or “Danger Do Not Make Alive” notices and personal padlocks shall be applied.

In addition to the foregoing requirements:

11.4.8 In the case of TRANSFORMERS, in the presence of the Competent Person,

take steps to ensure that the transformer cannot become re-energised from either the primary, secondary or tertiary side by isolating, testing and earthing in accordance with Section 13 - Safety Earthing.

11.4.9 In the case of CABLES, in the presence of the Competent Person, identify the

cable at the work place by means of approved cable identification equipment or other approved means if cable identification equipment cannot be used, provided that this requirement may be omitted when the cable can be physically traced throughout its length from a control point at which it has already been isolated and earthed, to the position where it is intended to work on the cable. Thereafter the Authorised Person shall prove the cable dead at the work place by the application of approved cable spiking equipment.


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11.5 In the case of UN-INSULATED HV OVERHEAD mains and/or apparatus the

Authorised Person must test the overhead mains and/or apparatus at the workplace, ensure that they are dead, and then apply approved portable safety earthing equipment, provided that:

The Authorised Person may be assisted by a Competent Person familiar with switching operations in carrying out testing and earthing procedures on overhead mains and/or apparatus, provided that the Competent Person is directly and personally supervised by the Authorised Person. Under such circumstances the Authorised Person is fully responsible for the Competent Person.

11.6 After the mains and/or apparatus have been isolated, earthed and proved dead, the Authorised Person shall issue a Permit to Work to the Person/s-in-Charge in accordance with Section 16. Each responsible person in charge of a crew that is to perform work or carry out inspections, in close proximity to the mains and/or apparatus shall be considered to be a Person-in-Charge for the purpose of receiving the Permit to Work.

11.7 Personal working earths shall be applied to, and retained on, all overhead conductors

as an additional safety measure by employees or contractors when working at any position remote from the other approved earthing equipment applied by the Authorised Person. Personal working earths shall be placed in such a position that it is visible from and applied as close as possible to the point of work.

11.8 In instances where the circuit has to be broken during the course of the work, steps

must be taken to ensure that both sides of the circuit remain earthed at the workplace. If the temporary removal of the earths is unavoidable in order to carry out the work, the earths must be replaced as soon as circumstances permit.

11.9 In instances where access to substation basements are necessary, safety hard hats shall

be worn at all times.


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11.10 WORK ON TRANSFORMERS

11.10.1 66/11kV System Transformers

When work is to be carried out on 66/11kV System Transformers, the circuit breakers and isolators of both windings must be opened, isolated, locked off and both windings must be earthed.

11.10.2 11kV/415V Distribution Transformers When work is to be carried out on 11000/415V Distribution Transformers, the circuit breakers or isolators of both windings must be opened, isolated, locked off and the 11000V winding must be earthed.

In addition to the above, in the case of an 11000/415V Transformer where the low voltage circuit breaker is of the non-withdrawable type, portable earths must be applied either at the transformer low voltage terminals or at the termination of the transformer cable on the Low Voltage Switchboard.

11.10.3 Removal of Earths Should work require the removal of an earth connection from any winding this may only be done by the Authorised Person, as soon as the work is completed or suspended, the Authorised Person shall ensure that the earth is reconnected.

11.11 WORK ON CIRCUIT BREAKERS

11.11.1 Fixed Type Circuit Breakers

When work is carried out on a MV/HV circuit breaker, the circuit breaker MUST be isolated and earthed on both sides. The isolators shall be locked in their open position by an Authorised Person and may only be unlocked by the Authorised Person after work on the circuit breaker is completed or suspended.

11.11.2 Draw-out Type Circuit Breaker A draw-out type circuit breaker shall be withdrawn from its service position to its test position for operational tests and out of the switchgear panel for other tests or work to be carried out on it.

Any other apparatus, which is normally directly connected to a circuit breaker, shall be treated as part of the circuit breaker in respect of isolation and earthing.


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11.12 WORK ON ISOLATORS

When work is carried out on an isolator, both sides of the isolator must be isolated from all live conductors by opening other isolators and both sides of the isolator must be earthed

11.13 WORK ON BUSBARS

A busbar must be isolated from all live Conductors and earthed before any work may be carried out on the busbar.

For switchgear equipped with draw-out type circuit breakers, ALL circuit breakers which can be connected to the busbar must be withdrawn from their cubicles and the busbar earthed before any work is carried out on the busbar. All circuit busbar shutters shall be locked off prior to any work being carried out on the busbars.

11.14 WORK ON OVERHEAD LINES

11.14.1 Programme

Except in an emergency, work on any overhead line shall be carried out in accordance with a written program drawn up by the Authorised Person responsible for the issue of the Permit to Work.

It is the responsibility of the Authorised Person to ensure that each person who is to work on overhead line poles/towers, conductors or other components is a Competent Person as defined in clause 1.1.2 of these Rules.

11.14.2 Personal Working Earths

No work shall be started on any overhead line until earthing conductors, in addition to those, which have been attached at Control Points, have been attached at the point or points where work is to be carried out.

The Authorised Person responsible shall satisfy himself that the live conductors are isolated, discharged and earthed and all conductors are bonded together by means of a portable earthing device at a point on each side of the section of line on which work is to be carried out. All earthing points shall be visible from the point at which work is to be carried out.

The Person-in-Charge of the work shall connect the portable earthing device to earth before attaching it to the line conductors. On completion and withdrawal of workers and tools the Person-in-Charge shall remove the earthing devices before certifying that the line is ready to be made alive.


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11.14.3 Disconnection of Line

When it is required to disconnect any section of a line on which work is to be carried out, the line conductors shall be short circuited and earthed at each point of disconnection on both sides of the break.

Portable earthing conductors shall then be applied before work begins. On completion of work all these earths shall be removed.

11.14.4 Limits

Work may be carried out by a Competent Person under the direction of an Authorised Person provided that he does not ascend beyond a position in which it is possible for him to bring any part of his body or any working tools within the following distance of any live high voltage conductor:

11kV - 1.0 metre

66kV - 2.0 metres

Such work shall be carried out under the direct supervision of an Authorised Person. The Authorised Person is responsible for ensuring that the Competent Person thoroughly understands the limits to which he may undertake the work. A Permit to Work is required in all instances where the above safety clearance limits may be breached.

11.14.5 Personal Safety

No person shall climb any overhead line pole/transmission tower unless he is wearing an approved safety belt/harness which is in sound condition and is under the observation of a second person at ground level.

No material, tools or any other articles shall be thrown up to a person working above a distance at which such articles may be comfortably handed to him. On no account shall any material, tools or articles be thrown from the pole/transmission tower to the ground. Hand lines, tackle, containers or other approved means shall be used for raising or lowering such articles.

11.14.6 Lightning

In the event of the approach of a lightning storm, all work shall cease immediately and the Authorised Person and/or Supervisor shall be informed as soon as possible. No person shall work on or patrol an overhead line when lightning strokes are probable.


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SECTION 12

SWITCHGEAR 12.1 Whenever work, including the insertion of test leads, is to be performed on the spouts

of MV/HV switchgear, or a busbar chamber, or other chamber containing MV/HV conductors, is to be opened:-

12.1.1 The person doing the work on the spouts, or opening of the chambers, shall

ensure that the whole switchboard has been isolated and earthed, and that all sources of supply have been isolated, earthed and locked off, and danger labels have been applied, and shall be issued with a Permit to Work.

12.1.2 Before commencing work the Authorised Person and Persons-in-Charge shall, by observation and examination familiarise themselves with the switchboard or portion of the switchboard to be worked on.

12.1.3 The Authorised Person shall comply with the prescribed procedures for work on MV/HV mains and/or apparatus as well as the following requirements:-

12.1.3.1 Shutters of live spouts shall be locked in the shut position. They

may be temporarily unlocked during live cable phasing or testing and thereafter immediately relocked.

12.1.3.2 The contacts of spouts to be worked on shall be tested by means

of an approved tester to verify that they are dead.

12.1.3.3 Spout contacts shall be earthed with equipment provided for the purpose at the point of work and at all points of isolation from the supply.

12.1.3.4 When the spouts of the conductors are connected to an overhead

circuit on which there is any likelihood of dangerous induced voltages, approved portable earthing equipment shall be effectively connected at the nearest point to the point of work where access to the conductors can safely be obtained.

12.1.3.5 Busbar chambers or chambers containing MV/HV conductors

shall not be opened whilst such busbars or conductors are live.

12.1.3.6 When spouts are to be worked on the Authorised Person may, remove the earths at the point of work, however, each spout must be safety tested with an approved tester before a hand or tool is inserted. If the only earths that can be applied to the circuit are those applied in the spouts, then while this work is in progress no other work shall be carried out on the circuit connected to those spouts.


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12.1.3.7 If a current transformer is to be connected or disconnected on the

MV/HV side, then earths must be applied on both sides of the MV/HV circuit whilst work is in progress.

12.1.3.8 If the application of test prods requires the removal of earthing

equipment, the circuit must be tested with an approved tester immediately prior to the insertion of the test prods and again before connections to the prods are made. Rubber gauntlets shall be worn at all times.

Rubber gauntlets shall also be worn when test prods are inserted into or withdrawn from a circuit that remains earthed.

Under no circumstances may test prods be inserted with portable earth leads connected to them.

12.2 Only approved earthing equipment supplied for use with the switchgear shall be used for earthing busbars and circuits.

12.3 The insertion of the hand, any tool or lead into contact spouts for this purpose is forbidden.

12.4 Whenever a switch truck, or the withdrawable portion of switchgear, is removed from

its housing, the shutters of all spouts whose contacts are live, or have not been earthed, must be locked off. If a Permit to Work has not been issued for the circuit, universal padlocks may be used.

12.5 Work can be performed on a withdrawable circuit breaker, which has been

disconnected from every source of supply and withdrawn from its normal live position without such apparatus having to be earthed. It is not necessary to issue a Permit to Work for work to be performed on such apparatus under these circumstances.

12.6 Spare MV circuit breakers and switches must normally be left in the isolated position.

They may be left in the circuit earth position if this is essential.

Shutters must be locked off and notices applied indicating the reason.

Spare MV circuit breakers and switches must be shown on all the circuit schematic diagrams

Spare MV circuit breakers and switches must be labeled “Spare”.


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SECTION 13

SAFETY EARTHING 13.1 EARTHING PROCEDURE

The procedure to be followed when applying portable earthing leads shall be as follows:-

13.1.1 Use a voltage detector of an approved type and voltage rating.

13.1.2 Test the voltage detector on a live circuit, if not self-diagnostic.

13.1.3 Verify that the circuit to be earthed is dead by testing each phase.

13.1.4 Re-test the voltage detector on a live circuit, if not self-diagnostic.

13.1.5 The earthing leads shall be connected first to the earth system before being secured to the phases. They shall only be secured to the phases by means of an insulated rod of an approved type and voltage rating. Care must be taken to ensure good metal to metal contact is made.

13.1.6 All phases shall be earthed, even if work is to be carried out on only one phase.

13.1.7 Where possible, a circuit breaker or an earthing switch with adequate fault making capacity shall be used to make the final earth connection. After closing, steps shall be taken to lock off any means of tripping or opening the circuit breaker or earthing switch.

13.1.8 When removing earth leads, they shall be disconnected first from the phase conductors and then from the earth system.

13.2 RECORD OF EARTHING

The System Control Operator on duty shall record in his logbook the time of application and the location of Control Point Earth connections. Thereafter he shall record the time of removal and reapplication of control point earths.

13.3 The following minimum earthing requirements of MV/HV mains and/or apparatus on or in close proximity to which work is to be performed will apply:

13.3.1 Except in the case of underground cables a minimum of one Control Point

Earth is required and shall be affixed to mains and/or apparatus. Should local circumstances require it, the Authorised Person shall apply Personal Working earths.


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13.3.2 Mains and/or apparatus must be earthed at a control point at each source of

supply or as follows.

13.3.2.1 On an overhead line having more than one source of supply, and having fixed earthing switches or devices, the requirements of Sub-section 13.3.1 and 13.3.2 will be deemed to have been met if:

13.3.2.2 The overhead line is effectively earthed by closing fixed earthing

switches or devices at control points at two different sources of supply, at opposite ends of the circuit.

13.3.2.3 In addition earthing equipment is applied on both sides of the area of work such that persons always work between earthed points.

13.3.2.4 A control point at each source of supply is isolated and locked off

and “Danger Do Not Make Alive” labels are applied.

13.3.3 When earthing a busbar the requirements of 13.3.2 will be deemed to have been satisfied if all the following have been complied with:

13.3.3.1 At least one earth has been applied at a control point, and a “Danger Do Not Remove Earth” label has been affixed.

13.3.3.2 All sources of supply have been isolated and locked off.

13.3.3.3 Where applicable, operating handles have been locked off at control points at all sources of supply.

13.3.3.4 Where applicable, all busbar spouts have been locked off.

13.3.3.5 A “Danger Do Not Make Alive” label has been applied at each control point.

13.3.4 All medium/high voltage windings of a transformer shall be earthed from the nearest accessible point.

13.3.5 If on an exposed MV/HV conductor system an earth is not visible from the workplace, additional earthing equipment, which is clearly visible, must be applied.

13.4 The Authorised Person/Person-in-Charge shall be responsible for ensuring that only approved appropriate portable earthing equipment is applied to mains and/or apparatus and that such equipment is of adequate cross section and in good working order and for ensuring its removal before the circuit is made alive.

13.5 It is the responsibility of the Authorised Person to confirm that all the working earths have been removed before accepting back a Permit to Work after the work has been completed.


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SECTION 14

TESTING OF MV/HV MAINS AND/OR APPARATUS When pressure tests, fault location tests or tests of a specialised nature carried out by the Person-in-Charge, are performed on mains and/or apparatus that are connected to the MV/HV system all applicable requirements of the System Operating Regulations shall be observed.

14.1 The Person-in-Charge of the test shall be a Competent Person who has been deemed competent in test procedures.

14.2 The Authorised Person requesting the test shall ensure that:

14.2.1 The mains and/or apparatus are in a condition ready for testing, 14.2.2 All personnel in his charge are clear and have been warned that a test is to be

applied.

14.2.3 All Permits to Work issued in respect of the mains and/or apparatus have been withdrawn.

14.3 The Authorised Person shall undertake the switching, isolating and earthing of the

mains and/or apparatus at all control points. 14.4 The Person-in-Charge of the test shall accompany the Authorised Person to all the

control points, and:

14.4.1 Satisfy himself that the mains and/or apparatus have been isolated and earthed at each control point;

14.4.2 Satisfy himself that personal padlocks have been applied to switchgear and

earthing equipment in order to prevent unauthorised operation, and all busbar and voltage transformer shutters associated with the mains and/or apparatus have been locked in the closed position;

14.4.3 Ensure that a personal “Danger Do Not Make Alive” notice has been

attached at each control point, and shall himself apply a personal “Danger Test In Progress” notice at each control point; and

14.4.4 On completion of his inspection of the safety measures taken at the control

points, indicate his satisfaction to the Authorised Person by signing a Permit to Work/Test.


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14.5 The Authorised Person shall then issue the Permit to Work/Test to the Person-in-Charge of the work and/or test, and hand him the keys to the padlocks applied at the control points.

14.6 After accepting the Permit to Work/Test the Person-in-Charge of the test shall be

responsible for ensuring that all necessary safety pre-cautions are taken during the test in regard to personnel and equipment, and that all exposed conductors are suitably guarded and labelled. The Person-in-Charge of the test shall be responsible for the safety of all persons assisting him.

14.7 The removal of earths in order to allow the test to proceed shall only be done by the

Authorised Person under the personal supervision of the Person-in-Charge of the test. This must be communicated to the System Control Operator who will record the removal of the control point earth.

Conductors and spout contacts must be safety tested using an approved tester before being touched, after the earth has been removed.

14.8 Whenever it is necessary for work to be done on the spouts of switchgear, including

the insertion of test prods, this shall be done under the supervision of an Authorised Person in accordance with Section 12 - Switchgear.

14.9 On completion, the Person-in-Charge of the test shall earth any conductors to which a

test voltage had been applied, and shall then remove his “Danger - Test in Progress” notices from all control points. He shall then sign off and return the Permit to Work/Test to the Authorized Person, and hand back the keys. He shall also ensure that the mains and/or apparatus are left in the same condition in which they were handed to him.

14.10 The Authorised Person shall then cancel the Permit to Work/Test. 14.11 TESTING AND PHASING OUT

14.11.1 General

High Voltage apparatus shall not be connected to the Utility's system until it has passed tests approved by the Utility and until any associated protective gear has been proven to function properly.

14.11.2 Permit Earthing conductors shall not be removed for testing purposes until all Permits to Work relating to the apparatus have been cancelled and the Authorised Person has sanctioned their removal. A Permit to Work/Test shall be issued by the Authorised Person responsible for testing and with the System Control Operator who shall record this in his logbook.


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14.11.3 Safety

High Voltage tests shall be carried out under the direct supervision of an Authorised Person who shall be responsible for guarding the apparatus to be tested, the test set and temporary high voltage conductors used for testing by properly placed “Danger Notices”, screens and barriers to prevent danger. “Danger Notices” shall be placed in prominent positions. The “Danger Notices”, screens and barriers shall not be removed until all tests have been completed and the apparatus which was tested has been discharged and earthed. All apparatus shall be earthed before and after the application of high voltage for testing.

14.11.4 Phasing Out

The phasing out of any apparatus, which is to be connected or reconnected to the Medium/High Voltage System, shall be checked by the Authorised Person responsible for the work before the apparatus is put into service. Where the checks include the use of secondary connections only, no special precautions are necessary, but the System Control Operator shall be informed of the phasing out being done. A record shall be made by the System Control Operator in his/her logbook and by the person doing the phasing out in the log book of each substation involved.

When High Voltage leads are used for phasing out, the whole of the work of connecting the leads, phasing out procedure and removal of the leads shall be carried out under the direct supervision of an Authorised Person who shall be solely responsible for the safety of personnel and equipment throughout the entire operation.


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SECTION 15

RE-ENERGISING OF OVERHEAD LINES AFTER THE OPERATION

OF PROTECTIVE EQUIPMENT

EQUIPMENT

Whenever the cause of the controlling switch of an overhead line tripping or locking out is known and it is safe to re-energise, a reclosure must be effected. If the cause is unknown the following procedure shall be adopted.

15.1 Where a line trip has occurred, the System Control Operator shall attempt to verify whether there was lighting activity in the vicinity of the line by contacting the security guards at either end of the line or, in the case of lines terminating at a power station. The Shift Superintendents or other employees working or residing in the area concerned should also be contacted if necessary.

15.2 The System Control Operator shall then contact the relevant official in charge, who

may be the 66kV Standby Person (after hours) or, the H.O.D. Transmission and Distribution, or his nominee (normal hours), informing him of the line trip and whether lightning activity has been confirmed in the vicinity of the line or not. The System Control Operator shall also confirm that the fault recordings from both ends of the circuit have been uploaded to SCADA.

15.3 Where lightning activity has been confirmed and the relevant official has satisfied

himself that lightning is the most likely cause of the trip, he shall instruct the System Control Operator to re-energise the circuit. In the case of a double circuit trip where lightning is the most likely cause of outage. The second circuit shall be re-energised following the successful re-energising of the first circuit.

15.4 In the event of a double circuit trip where it has been determined that lightning is the

most likely cause, and that re-energising of the first circuit has been unsuccessful, an attempt to re-energise the second circuit is permissible.

15.5 In the event of either a single or double circuit trip where there has been no apparent lightning activity, the relevant official shall arrange for the line to be inspected prior to the re-energising of the circuit, except where the conditions described under clause 15.6 prevail.

Note: Reasons for the protection trip such as fires beneath the lines, monkeys, birds,

mechanical failure or other possible causes should be strongly suspected and all reasonable attempts to establish the cause(s) should be made. Should there be any doubt as to whether the line can be safely re-energised no attempt shall be made to do so.


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15.6 In situations where single or double circuit trips occur in the absence of lightning

activity and this together with the prevailing network configuration presents an unacceptable risk to the security of supply of the power system, the 66kV Standby Person shall consult with the H.O.D. Transmission and Distribution or his nominee, who shall then decide whether the line can be re-energised without prior inspection in order to mitigate further risk to the security of supply.

15.7 Following each occasion where a circuit(s) of an OHTL has tripped and has been successfully re-energised without prior inspection, Transmission and Distribution staff shall inspect the line for damage at the earliest possible opportunity.

15.8 PATROLS AND INSPECTIONS

15.8.1 Before a ground patrol of an overhead line is commenced, terminal equipment at the associated substations should be inspected.

15.8.2 When patrolling an overhead line all the spurs (tee offs) as well as the main section of the overhead line must be patrolled and checked.

15.8.3 The onus is on the man in the field to ensure that all of the required overhead line is patrolled and checked.

15.8.4 If there is any doubt as to what should be patrolled and checked, the complete overhead line plus any terminating equipment must be patrolled and checked.

15.9 GENERAL

15.9.1 Whenever one line of a double circuit transmission tower system is isolated and earthed to allow work to be performed on it, should the live line trip out automatically no attempt shall be made to re-energise it until all personnel are clear of the tower.


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SECTION 16

ISSUE OF PERMIT TO WORK ON MV/HV MAINS AND/OR

APPARATUS

16.1 A Permit to Work for MV/HV mains and/or apparatus (Annexure 1) may only be issued by an Authorised Person who shall:

16.1.1 Familiarise himself with the switching requirements of the job, prior to doing any switching.

16.1.2 Ensure that there is a Competent Person present to witness switching when earthing of mains and/or apparatus is required.

16.1.3 Liaise with the System Control Operators keeping them informed of switching movements and Permit to Work details.

16.1.4 Carry out the switching in a safe and proper manner.

16.1.5 Apply personal padlocks and appropriate labels to all Control Point Earths (CPEs).

16.1.6 Prepare the Permit to Work once all isolating, testing and earthing has been completed.

16.1.7 Give explicit instructions to the Person-in-Charge of the job and ensure that these instructions are understood.

16.1.8 Issue the Permit to Work once these instructions have been understood, ensuring that all parties fully and correctly complete the Permit to Work.

16.1.9 Remove the original page of the Permit to Work and hand it, together with the keys of the CPE’s to the Person-in-Charge of the job.

16.2 The Person-in-Charge at the workplace, shall before accepting the Permit to Work/Test ensure that the work to be undertaken and the safe limits of the workplace are fully understood, and shall:

16.2.1 Satisfy, himself that all isolating, testing and earthing has been carried out and that the mains and/or apparatus is safe to work on.

16.2.2 Ensure that the underground mains have been identified and proved dead at the workplace subject to the provisions of Clause 11.5.2 of section 11 if applicable.

16.2.3 If a cable identification test is conducted and it is necessary to remove the system earth for test purposes, an entry should be made on the Permit to Work/Test, to serve as a reminder that the system earth has been disconnected.


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16.2.4 The keys to padlocks applied to control points shall be handed to a Person-in-Charge or retained in a safe place until all Permits to Work have been signed off and the mains and/or apparatus are handed back to the Authorised Person

16.2.5 A Person-in-Charge of a test on a cable, which necessitates the handling of, or work in close proximity to the conductors, shall be issued with a Permit to Work. Where a second person is required to assist at the end of the cable which is at a remote workplace then that person shall also sign the “Acceptance” section of the Permit to Work as a second Person-in-Charge.

16.3 A Permit to Work shall not be issued to more than three Persons-in-Charge and their crews at a work place.

16.4 When the Authorised Person is also the Person-in-Charge at a work place, he shall

make out a Permit to Work for himself, obtain the signature of the Competent Person where necessary, and sign as a Person-in-Charge. He must also obtain the signatures of other Persons-in-Charge at the workplace as appropriate.

16.5 On completion of the work the Persons-in-Charge of each crew shall satisfy

themselves that all the men of their crews are clear of the mains and/or apparatus, and have removed any personal working earths applied by them before removing any personal working earths they themselves have applied to the conductors. After removal of their own personal working earths, the Person-in-Charge shall sign and return the completed Permit to Work to the Authorised Person, and return any keys that they may have held.

16.6 On return of the completed Permit to Work the Authorised Person who issued the

Permit to Work/Test is responsible for obtaining confirmation from the Persons-in-Charge that all persons under their control are clear of the mains and/or apparatus and that all personal working earths applied by crews working on overhead conductors have also been removed. Thereafter the Authorised Person shall remove all earthing equipment that he himself has applied at any work place, and in addition any “Danger Do Not Make Alive” and/or “Danger Do Not Remove Earth” notices and personal padlocks that were applied by him.

16.7 The Authorised Person shall, if requested, in liaison with the System Control Operator

re-commission the mains and/or apparatus and return all switching to normal. 16.8 The issue of a Permit to Work on/Test MV/HV cables. This Permit to Work on/Test is to be used for the purpose of cable jointing in order to

facilitate the phasing out of MV/HV cables before the jointing procedure is to be completed.

16.8.1 The Person-in-Charge and his assistants will cease work and leave the work

area. The Person-in-Charge shall then sign the sanction for test and the Authorised Person shall then commence the testing procedure.


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16.8.2 After the testing has been completed and any earths removed during testing

have been re-applied, the Person-in-Charge shall sign in agreement that it is safe to complete the work on the cable.

16.8.3 On completion of the work, the Permit to Work on/Test MV/HV cables shall

be cleared by the Person-in-Charge and thereafter cancelled by the Authorised Person.

16.9 Unusual circumstances, which may arise in the completion of Permits to Work.

16.9.1 Where a Person-in-Charge is not available to sign the Clearance section of the Permit to Work. The Engineer in Charge or the H.O.D. Transmission and Distribution shall sign the Clearance section after satisfying himself that it is safe to do so.

16.9.2 Where the Authorised Person who issued the Permit to Work is not available to receive back the Permit to Work and keys from the Person-in-Charge, the Engineer in Charge or H.O.D. Transmission and Distribution shall designate another Authorised Person to accept the Permit to Work and keys and complete the procedure for handing back the mains and/or apparatus to the System Control Operator.

16.9.3 If a person is to take over from another Person-in-Charge who has accepted, and has been working under a Permit to Work, that Permit to Work shall be cancelled and a new one shall be issued by the Authorised Person after the usual procedure has been followed.

16.9.4 Completed Permits to Work shall be forwarded to System Control where they will be retained for a period of not less than three months before disposal.


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SECTION 17

WORK IN CONJUNCTION WITH BERAKAS POWER MANAGEMENT COMPANY

17.1 Cable Fault Location

Whenever a Cable fault occurs between the Department of Electrical Services (DES) primary distribution substation and the downstream main 11kV Berakas Power System (BPS) switchboard, the following procedure shall be adhered to: 17.1.1 The BPMC System Control Operator on duty shall inform the DES that a

system fault affecting the DES distribution network has occurred. 17.1.2 BPMC Authorized staff shall isolate, lock-off and label the affected circuit

breaker at the BPS substation.

17.1.3 When the DES is ready to perform the cable fault location, they shall contact BPMC and both parties will nominate an Authorised Person as the Person-in-Charge of the test. The respective Persons-in-Charge shall be responsible for ensuring that the cable fault location is conducted in a safe and proper manner and in accordance with the respective DES and BPMC System Operating Regulations.

17.1.4 Access to BPS substations by DES staff and DES Contractors shall only be

permitted if both the DES and BPMC Persons-in-Charge are in attendance and that the required Non-Employees Permit (Annexure 3), allowing access for the purposes of conducting a cable fault location has been issued to the DES Person-in-Charge by the BPMC Person-in-Charge.

17.1.5 Prior to conducting any testing, the DES and BPMC Persons-in-Charge shall

jointly confirm that isolation, locking off and labeling of the circuit has been carried out at both ends of the cable.

17.1.6 The DES Person-in-Charge shall then witness the testing, earthing and locking

off (with personal padlock) of the circuit at the BPS end of the cable by the BPMC Person-in-Charge. Appropriate labels shall be affixed to the panel upon completion of the earthing. The keys to the personal padlocks for the Control Point Earth (CPE) shall be handed to the DES Person-in-Charge. The BPMC Person-in-Charge shall then issue a Notice of Isolation of Electricity Supply Mains (Annexure 2) to the DES Person-in-Charge.


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17.1.7 The DES Person-in-Charge shall then assume responsibility for the circuit and shall carry out the fault location from the DES control point using DES equipment.

17.1.8 During testing, the BPMC Person-in-Charge shall remove and re-apply the

CPE at the BPS end of the cable at the request of the DES Person-in-Charge as required. All operations at the BPS end of the cable are to be witnessed by the DES Person-in-Charge or his designated representative, providing that such a person has been included as assisting the DES Person-in-Charge on the access Permit.

17.1.9 In the event that it becomes necessary to conduct the test from the BPS end of

the cable, the following procedure shall be adhered to:

17.1.9.1 DES/BPMC Persons-in-Charge are to ensure compliance with all aspects of the BPS System Operating Regulations at all times.

17.1.9.2 A Permit to test shall be taken out by the BPMC Person-in-Charge;

in addition to this a Non-Employee’s Permit shall be issued to the DES to allow the DES to carry out the testing from the BPS switchgear.

Note: In addition to the BPS Control Point, the DES Control Point must be included on the Permit and as such it shall be treated both as a normal Control Point as defined in these Operating Regulations, and in terms of the Control Point requirements for the isolation, testing, earthing and the issuing of a Permit to Test.

17.1.9.3 The BPMC Person-in-Charge shall remove the CPE at the BPS end

of the cable to allow the DES to conduct the fault location test. The DES shall then proceed to locate the cable fault from the BPS end of the cable with the BPMC Person-in-Charge in attendance.

17.1.9.4 On completion of the cable fault location, the BPMC Person-in-

Charge shall re-apply and lock off the CPE and hand over the keys to the DES Person-in-Charge to allow DES to carry out the cable repair.

17.1.9.5 The BPMC Person-in-Charge shall then cancel the Permit to Test as

well as the Non-Employee’s Permit.


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17.1.10 After completion of the cable repair the following procedure shall be adhered to:

17.1.10.1 The DES Person-in-Charge shall contact the BPMC Person-in-Charge and shall arrange a mutually agreed date/time for switch on.

17.1.10.2 DES/BPMC shall meet on site at the BPS end of the cable and the BPMC Person-in-Charge shall remove the CPE for test purposes.

17.1.10.3 The DES staff shall then carry out the pressure testing of the repaired cable from the DES end of the cable.

17.1.10.4 After successful completion of the pressure test the BPMC Person-in-Charge shall cancel the Notice of Isolation certificate.

17.1.10.5 DES staff shall re-energise the cable from the DES end of the cable.

17.1.10.6 At the BPS end of the cable, the BPMC Person-in-Charge shall carry out live electrical phasing, which shall be witnessed by the DES Person-in-Charge.

17.1.10.7 The BPMC Person-in-Charge shall then close the circuit breaker to normalise the system.

17.2 Commissioning of New DES 11kV Primary Substations

Whenever a new DES substation is to be connected and commissioned on an 11kV Primary cable loop between a main BPS switchboard and a downstream DES Primary distribution substation, the following shall be adhered to:

17.2.1 The DES shall submit a copy of all signed test reports/setting reports for the

new substation to BPMC Engineering and Planning for verification. The report shall be retained and filed in the BPMC library.

17.2.2 The control sheet for commissioning of the new DES substation shall be

completed by BPMC Engineering and Planning and handed over to BPMC Operations and Maintenance prior to commissioning.

17.2.3 The DES shall inform BPMC of the proposed switch on date of the new DES

substation by submitting form BPMC/DES/TS/*** to BPMC Engineering and Planning, who shall then inform BPMC Operations and Maintenance section.

17.2.4 BPMC Operations and Maintenance shall arrange for the necessary Switching

Program and shall co-ordinate the shutdown for the commissioning of the new DES substation with the responsible DES staff.


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17.2.5 All switching operations shall be done in accordance with the approved

BPMC Switching Program. The DES shall be responsible for all switching, testing and phasing on the DES equipment and similarly, BPMC shall be responsible for the equivalent operations on the BPS equipment.

17.2.6 After witnessing the isolation, locking off and labeling of the cable at the DES Control Point, the BPMC Person-in-Charge shall isolate the circuit breaker at the relevant BPS substation and with the DES Person-in-Charge in attendance, shall test and apply the Control Point Earth (CPE).

Note: The BPMC Person-in-Charge must issue a Non-Employee’s Permit (Annexure 3) to the DES Person-in-Charge and his assisting staff and contractors prior to them accessing the BPS substation

17.2.7 The BPMC Person-in-Charge shall then issue the DES staff with a Notice of Isolation of Electricity Supply; the keys to personal padlocks at the BPS CPE shall be handed to the DES Person-In-Charge.

17.2.8 In the event that the DES Person-in-Charge requests access to the cable at the BPS end for testing, a Permit to Test shall be taken out by the BPMC Person-in-Charge; in addition, a Permit for Non-Employee’s and Contractors to Enter Substations and Live Enclosures shall be issued to the DES Person-in-Charge to permit testing from the BPS switchgear by the DES Person-in-Charge.

17.2.9 Upon completion of the testing, the BPMC Person-in-Charge shall cancel the Permit to Test together with the Permit for Non-Employee’s and Contractors to Enter Substations and Live Enclosures.

17.2.10Upon completion of the jointing, the DES shall request the removal of the BPS CPE to permit the pressure testing of the new cables from the relevant DES Control Points.

17.2.11 After the successful completion of pressure tests, the BPMC Person-in-Charge shall cancel the Certificate of Isolation.

17.2.12The new DES substation shall be energised from the DES 11kV network in accordance with the approved BPMC Switching Program; the 11kV cable connected to the main switchboard at the BPS substation shall also be energised from the new DES substation.

17.1.13The BPMC Person-in-Charge shall then carry out the electrical live phasing at the BPS substation, which shall be witnessed by the DES Peron-in-Charge.

17.2.14The BPMC Person-in-Charge shall then close the circuit breaker to normalise the system and all outstanding Non-Employees Permits issued to the DES for access purposes shall be cancelled upon completion of the work.


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SECTION 18

ENERGISING OF NEW MAINS AND/ OR APPARATUS

18.1 The following HV/MV Mains and/or apparatus may only be energised by the

following, or more senior, Authorised persons:

18.1.1 Distribution overhead and underground Mains rated up to 11 000 volts: Engineer in Charge.

18.1.2 Transmission Mains and apparatus rated at 66 000 volts: H.O.D. Transmission and Distribution.

18.1.3 Power Station Plant and equipment rated at 11 000 volts and above: H.O.D. Transmission and Distribution.

18.2 Officials energising mains and/or apparatus shall ensure that:

18.2.1 All necessary tests have been successfully completed.

18.2.2 The System Control Operator has been notified and that all necessary details have been furnished to enable the Control Room diagram to be updated in advance.

18.2.3 Protection devices are correctly set or have been set by appropriate officials of Engineering Division.

18.2.4 All necessary danger and statutory notices are in place.

18.2.5 All spare circuit breakers and switches are isolated and have been labelled “spare”, associated shutters and operating handles are locked off and that danger notices are applied.

18.2.6 All designations are correct.

18.2.7 All covers are in place, and any exposed MV/HV conductors have been earthed in accordance with Section 13.

18.2.8 No items are missing that are necessary for the safe and proper functioning of energised equipment.

18.2.9 Where checklists are available that these have been properly completed prior to commissioning.

18.2.10 Persons in the vicinity are safe and clear of the mains and/or apparatus.

18.2.11 Legal clearances of overhead lines have been checked and found correct. 18.3 In addition the Authorised Person must inspect the mains and/or apparatus and

surrounds to ensure that there are no obvious hazards, and that all operating spaces and passages are clear.


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SECTION 19

EMERGENCY PROCEDURES IN THE EVENT OF FIRE

19.1 IN THE EVENT OF A FIRE IN THE POWER STATION

In the event of a fire within the Power Station, the specified officials must follow the following course of action:

Action by the Shift-in-Charge 19.1.1 Ensure that all staff evacuates the area and that everyone is accounted for.

19.1.2 Initiate the fire alarm if it hasn’t already been initiated through the automatic fire detection system.

19.1.3 Inform Control Centre Immediately.

19.1.4 Inform the Guard House to allow for entry of the Fire Engine, Ambulance etc.

19.1.5 In the event that the fire is on a gas supply line, change-over to diesel fuel, if possible, before tripping Emergency Shutdown Valve (ESV)

19.1.6 If possible, extinguish the fire with portable extinguishers or the hose reel.

19.1.7 After the fire has been extinguished, inspect and replace fire-fighting equipment.

19.1.8 Submit a report to the Deputy Director.

Action by SCADA Control

19.1.9 After receiving the information from the Shift-in-Charge, the System Control Operator shall call the Fire Brigade (Bomba) by dialing 995. When calling the Fire Brigade:

19.1.9.1 Identify yourself.

19.1.9.2 State the address, location and type of fire.

19.1.9.3 Provide details on any possible hazards.

19.1.9.4 Ensure that site staff is available to direct the Fire Brigade to the fire site upon their arrival.


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19.1.10 Carry out electrical isolation of any affected equipment and field staff to

be deployed if and when necessary.

19.1.11 Call the Deputy Director and report the details.

19.1.12 Monitor the situation and report any changes


19.2 IN THE EVENT OF A FIRE IN A SUBSTATION.

Action by field staff

In the event of a substation fire, the field staff on site must follow the following course of action: 19.2.1 Ensure that all staff evacuates the substation building and that everyone is

accounted for.

19.2.2 Inform Control Centre immediately.

19.2.3 For fires involving electrical equipment and in liaison with Control Centre, carry out the electrical isolation of affected equipment. If access to equipment is dangerous due to fire and smoke, isolation must be carried out on the upstream circuit breakers.

If the fire is small and can be safely contained using portable firefighting equipment, then attempts to do so should be made. If not await the arrival of the Fire Brigade and confirm with the Officer in charge that the affected substation had been electrically isolated.


Action by Control Centre 19.2.5 After receiving the information from the field staff the System Control

Operator shall call the Fire Brigade (Bomba) by dialing 995. When calling the Fire Brigade:

19.2.5.1 Identify yourself.

19.2.5.2 State the address, location and type of fire.

19.2.5.3 Provide details on any possible hazards.

19.2.5.4 Ensure that site staff is available to direct the Fire Brigade to the fire site upon their arrival.

19.2.5.5 Carry out any necessary electrical isolation in conjunction with field staff.


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SECTION 20

WORK ON GAS TURBINE GENERATOR PACKAGE AND

ASSOCIATED PLANT Work on Gas Turbine Generator Packages and the associated auxiliary plant, which encompasses both electrical and mechanical plant, shall be carried out in accordance with the following provisions: 20.1 Working inside a Gas Turbine Package

Prior to any work being carried out inside a Gas Turbine Package, either within the gas turbine compartment or the generator compartment, a Permit to Work on / in Generation Equipment (Annexure 9) shall be issued to the Person-in-Charge by the relevant Authorised Person. Prior to the issue of the Permit to Work, the following mandatory actions shall be performed and shall be recorded on the Permit to Work:

20.1.1 Close and apply labels to the gas fuel valves supplying the Gas Turbine Package.

20.1.2 Close and apply labels to the CO2 block valve and inhibit all fire suppression systems.

20.1.3 Isolate, lock off and apply labels to all electrical sources of supply to the turbine enclosure and generator enclosure ventilation fans at the motor control centre (MCC). In the case of inspection related work, which necessitates the operation of the Gas Turbine or Generator, a Permit to Work on / in Generation Equipment is not required however the procedural requirements for such work, which are documented in S.O.P. PM007 - Work On/In Generation Equipment, are to be strictly adhered to.

20.2 Work on Fuel Lines Where work is to be carried out on any fuel system, either internal or external to the

Gas Turbine Package, the requirements of clause 20.1 above shall be complied with. In addition to this, the gas or diesel line shall be isolated, labelled and purged as applicable. In the case of gas lines, gas tests shall be carried out to verify that the line is free from any residual gas and is safe to be worked upon. A Permit to Work shall then be issued irrespective of whether the work to be performed on the fuel lines is external or internal to the Gas Turbine Package.


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20.3 Work on a Gas Generator or Power Turbine

Where work is to be performed on the gas generator or power turbine, clause 20.1 and clause 20.2, where applicable, shall be complied with. In addition to this, where the nature of such work involves exposure to any hazards, which may be associated with the inadvertent rotation of the gas generator, the supply to the gas generator hydraulic starter shall be isolated, locked off and labelled at the relevant MCC. The isolation shall also be recorded on the Permit to Work.

20.3.1 Work on Igniters

Where work is to be performed on the gas generator igniters, the provisions of clauses 20.1 to 20.3 shall apply and in addition, the low voltage supply to the igniters shall be isolated and labelled; the isolation shall also be recorded on the Permit to Work.

20.4 Working inside the Exhaust Stack

Where work is to be performed inside the Gas Turbine Package Exhaust Stack, clause 20.1 shall be complied with. In addition to this, the Vent Line valve shall be opened, labelled and recorded on the permit to work. Gas detection within the confines of the workspace shall also be carried out prior to the commencement of any work.

20.5 Hot Work

Where any Hot Work, is to be performed on / in or near a Gas Turbine Package, a Permit to carry out Hot Work (Annexure 10) shall be issued to the person-in-charge by the authorised person. The BPS Standard Operating Procedures PM 006 ‘Hot Work Procedure’ defines the requirements for ‘Hot Work’ and shall be referred to and complied with prior to any work being carried out. Note: Where the Hot Work is to be carried out either in or on the Gas Turbine Package, a Permit to Work on/in Generation Equipment shall also be issued to the Person-in-Charge.

20.6 Working inside Generator Terminal Boxes

Prior to any work being carried out inside a generator terminal box, a Permit to Work on/in Generation Equipment as well as a Permit to Work on/Test MV/HV mains and/or apparatus (Annexure 1) shall be issued to the Person-in-Charge by the relevant Authorised Persons concerned. Notwithstanding the requirements stipulated in clause 20.1 for the issue of the Permit to Work on/in Generation Equipment, the Gas Generator Hydraulic Starter shall also be isolated in accordance with the requirements of clause 20.3.


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In the case of the Permit to Work on/test MV/HV mains and/or apparatus, the following Electrical Control Points (CP) and Control Point Earths (CPE) are mandatory requirements for the issue of the permit and as such, shall be recorded on the permit. 20.6.1 The 66kV Generator Transformer Line Isolator (CP).

20.6.2 The 66kV Generator Transformer Earth Switch (CPE).

20.6.3 The 415V Auxiliary Generator Transformer Circuit Breaker (CP).

20.6.4 The 11kV Generator Terminal Box (CPE).*

*Note: Since there is no fixed earthing switch installed on the 11kV Generator Terminal Box, approved portable earths shall be applied after testing.

20.7 Working inside Generator Transformer Terminal Boxes

Prior to any work being carried out inside the MV or HV cable terminal box of a generator transformer, the provisions of clause 20.6 above shall be complied with.

20.8 Work inside Auxiliary Transformer Terminal Boxes

Prior to any work being carried out inside the MV terminal box of a generator auxiliary transformer or, on the LV terminals where both the MV and LV terminals are contained within a common terminal box, the provisions of clause 20.6 above shall be complied with.

20.9 Work on Generator Neutral Earthing Resistors

Prior to any work being carried out on the neutral earthing resistor of a generator, the provisions of clause 20.6 above shall be complied with.

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PERMIT TO WORK ON/TEST MV/HV MAINS AND/OR APPARATUS PERMIT NO. PERMIT ISSUED TO _________________________________________________________________ (Person/s –in -Charge)

The Control Operator _____________________________________has been notified that this permit is to be issued for work on the

following mains and/or apparatus: ____

On which you

are required to____________________________________________________________________________________________________

The System Control Operator has obtained confirmation that the aforesaid mains and/or apparatus have been ISOLATED from every source of supply, and have been TESTED and EARTHED AT CONTROL POINTS as indicated below. Padlocks have been applied wherever locking facilities exist and personal “Danger Do Not Make Alive” and “Danger Do Not Remove Earth” Notices have been affixed as applicable: CONTROL POINTS * 1___________________________________ 2_______________________________

3 4

* Indicate whether isolated (I) or Isolated and Earthed (IE)

The mains/apparatus shall not be made alive again from the system until you have signed off and returned this Permit to Work. At the work place the mains and/or apparatus have been earthed or proved dead and these operations were: WITNESSED BY (Competent Person) Signature: ________________________ PERMIT ISSUED BY (Authorised Person) Signature: ________________________

DATE: TIME: _____

ACCEPTANCE The work to be carried out and the safe limits of the work-place have been fully explained by the authorised person and understood. I have seen the mains and/or apparatus earthed and/or proved dead at the work-place and accept this Permit. I acknowledge responsibility for the safe and proper execution of the work, and for the safety and control of the persons in my charge. I also acknowledge that I have completed a risk assessment with all staff under my control. PERMIT ACCEPTED BY: (Person/s –in - Charge) NAMES: 1. 2. 3. SIGNATURE: DATE/TIME: CLEARANCE I have completed the above work and all personal working earths and shorting devices and those of persons under my control have been removed. All persons under my control are clear of the mains and/or apparatus and have been warned that it is no longer safe to work thereon. PERMIT CLEARED BY: (Person/s – in - Charge) NAMES: 1. 2. 3. SIGNATURES:

DATE/TIME:

CANCELLATION Cleared Permit received and earthing equipment and precautionary notices removed at the work-place.

The Control Operator ________________________ was notified at Time on Date that this permit was cancelled.

SIGNATURE: (Authorised Person)

ANNEXURE 1

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ANNEXURE 2

NOTICE OF ISOLATION OF ELECTRICITY SUPPLY MAINS NUMBER

NOTE: THIS IS NOT A PERMIT TO WORK/TEST

NOTICE ISSUED TO (name of Person in-Charge) COMPANY/ORGANISATION ___________________________________________________________ DESIGNATION _______________________________________________________________________ SUBSTATION/PREMISES _____________________________________________________________________ REASON FOR ISOLATION ____________________________________________________________________

________________________________________________________________________________________________

The following HV/MV/LV supply mains have been Isolated only (I) or Isolated and Earthed (IE). Danger labels have been applied and

locks have been fitted at points of isolation where locking facilities exist. The supply mains shall not be made alive again until this notice is

cancelled.

POINTS OF ISOLATION * Indicate whether isolated (I) only or isolated and earthed (IE) 1 *___________________________________________ 2.* _________________ ISSUED BY NAME: ________________ SIGNATURE: (Authorised Person) NAME: SIGNATURE: ________________________ (Competent Person) CONTROL OPERATOR: ___ (advised) DATE _______________ TIME ______ __________ ACCEPTANCE The manner and extent to which the electricity supply mains described above have been (a) isolated only or (b) isolated

and earthed has been witnessed and understood and this notice accepted.

NAME: ____________________________ (Person-in-Charge) SIGNATURE: DATE: ____________________________ TIME: CLEARANCE All persons in my charge have been removed, and warned that the supply mains are no longer safe to work on. All earths

have been removed and I request that the supply mains be made alive.

NAME: ____________________________ (Person-in-Charge) SIGNATURE: ____________________ DATE: ____________________________ TIME: ________ CANCELLATION Earthing equipment and warning notices removed and the Control Operator advised that this notice is cancelled. SIGNATURE: (Authorised Person/Competent Person) DATE: TIME:

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DUTIES OF COMPETENT PERSONS OBSERVING, TESTING AND EARTHING OF MAINS AND APPARATUS

1. He must be conversant with utility’s Safety Rules.

2. They must verify that the authorised person is at the correct operating location.

3. They must verify that the Authorised Person is at the correct isolation/earthing device.

4. They must observe that the switching movements are carried out in the correct sequence and in accordance with the approved Switching Program.

5. They must be conversant with the switching, isolating, testing and earthing principles relevant to mains and apparatus.

6. They must be instructed in emergency procedures including the safe removal of a person from live mains and apparatus.

7. They must be physically capable of assisting the Authorised Person to manhandle equipment.

ANNEXURE 4

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ANNEXURE 5

EMERGENCY TELEPHONE NUMBERS

AMBULANCE 991 FIRE 995 POLICE 993 TALIAN DARUSSALAM 123 JERUDONG PARK MEDICAL CENTRE 2671433 GADONG SHIFT-IN-CHARGE GPS1 242-2583 / 729-3034

GPS2 242-0160 / 729-3035

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DEPARTMENT OF ELECTRICAL SERVICES ANNEXURE 6

SWITCHING REQUEST FORM

Date of Request : 31/10/2005 Revision Number: 0

1. ELECTRICAL EQUIPMENT INFORMATION

Substation Substation Name Jerudong 66kV s/s Tungku 66kV s/s CCT Designation Tungku 66kV Feeder #1 Jerudong 66kV Feeder #1 Voltage : 66kV Equipment : Cable Isolated Earthed Isolate Distribution Loop : Yes No If others, please specify : Isolated Earthed

2. SWITCHING INFORMATION Switching Programme required? : Yes No If Outage is required, should “DES Hotline” be notified? Yes No Is the same Switching Programme required on more than one day? Yes No If yes, on how many consecutive days is the Programme required? 3 Days Commencement Date: 03-11-2005 Time off: 08:30 Time on: 16:00

3. PERMIT INFORMATION Permit to work : Yes No Permit to Test : Yes No Isolation Certificate : Yes No

4. JOB DESCRIPTION : 66kV switchgear maintenance Requested by : Wong Soon Tai (Authorized Person) Checked by :

(CONTROL CENTRE)

Approved by : (Senior Engineer/HOD)

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ANNEXURE 7 Switching Programme #: ________________________________________________________________ Switching Operations For: _______________________________________________________________ Part A:De-energization

Name of

Substation

Name of Feeder

Switching Operations & Verification of each task performed

Switching Operations Required

Performed by: Name of

Authorised Person

Witnessed By:

Competent Person

1.

1. 2. 3. 4. 5. 6. 7. 8.

2.

1. 2. 3. 4.

5. 6.

Time Completed: _______________ Completed By: ______________________________

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Switching Programme #: ________________________________________________________________ Switching Operations For: ________________________________________________________________ Part B:Re-energization

Name of

Substation

Name of Feeder

Switching Operations & Verification of each task performed

Switching Operations Required

Performed by: Name of

Authorised Person

Witnessed By:

Competent Person

1.

1. 2. 3. 4. 5. 6. 7. 8.

2.

1. 2. 3. 4.

5. 6.

Time Completed: ______________ Completed By: _______________________________



REGISTRATION NO.

INJURY ON DUTY REPORT

TO BE COMPLETED BY INJURED PERSON'S SUPERVISOR AND SUBMITTED TO THE DEPARTMENT HEAD WITHIN

24 HOURS

ALL QUESTIONS MUST BE ANSWERED Department: Section:

1. INJURED PERSON: Name

Personnel No: Designation: Residential Address: 2. ACCIDENT: Date Time: Place: Description of Accident/Injury sustained: 2.1 WITNESS: Names and Address: 3. VEHICLE/S INVOLVED: if so, provide name/s and addresses of driver/s and the make and registration number/s of the vehicle/s. Also submit a Vehicle Accident Report Form in addition. 4. TREATMENT: First Aid only: (Yes/No) Medical Treatment: (Yes/No) Provide name of doctor: Hospital: 5. GENERAL INFORMATION: 5.1 Was the accident caused by the action of a person other than the injured workman? If so, provide his name and address: 5.2 When were you notified of the accident? Date: Time: By whom: If the injured failed to report the Injury/Accident on the same day what is the reason? 5.3 Was the injured workmen's action at the time of the accident for the purpose of or In connection with utility business? (Yes/No) 5.4 Are you satisfied that the workman was injured as alleged by him? (Yes/No) 5.5 When did the workman cease work? Date: Time: 5.6 Did the Workman return to duty on the next day/shift? (Yes/No) 5.7 If reported to police: Name of Station: 6. SUPERVISOR: Signature: Name in print: Date submitted: 7. INJURED: I agree that the information given above is correct and true reflection of the incident reported. (If the injured is not available or cannot sign, please indicate this). Signature:

Personnel No.:

Date:

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ANNEXURE 8



PART II REGISTRATION NO. A. RECORDING OF INCIDENT

1. Name of Employer:

2. Name of Affected Person: 3. Date of Incident: ____________________________________ 4. Time of Incident: ____________________________________ 5. Part of Body Affected: ____________________________________

Head or Neck Eye Trunk Finger Hand Arm Foot Leg Internal Multiple

6. Effect on Person:

Sprains or Strains Contusion or Wounds Fractures Burns Amputation

Electric Shock Asphyxiation Unconsciousness Poisoning Multiple

7. Expected period of disablement:

0

0 -13 days

2 - 4 Weeks

4 - 16 Weeks

16 - 52 Weeks

52 Weeks or Permanent disablement

Killed

8. Machine / Process involved / type of work performed:

B. INVESTIGATION OF THE ABOVE INCIDENT BY A PERSON DESIGNATED THERETO

1.Name of Investigator: 2. Date of Investigation: 2.Designation of Investigator: 3. Short description of Incident: 4. Suspected cause of Incident: 5. Recommended steps to prevent a recurrence:

Signature of Investigator Date

C. STEPS TAKEN BY EMPLOYER TO PREVENT THE RECURRENCE OF A SIMILAR ACCIDENT

Signature of Employer Date

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ANNEXURE 9



















ANNEXURE 10

PERMIT TO CARRY OUT HOT WORK PERMIT NO. PERMIT ISSUED TO ________________________________________________________ (Name of Person-in-Charge)

DESIGNATED FIRE WATCHER ____________________________________________________ (When applicable) You are hereby granted permission to carry out hot work in the following designated areas:

This permission is granted on condition that: (delete if not applicable) The work area has been made safe by:

a) Extraneous combustible material removed from work site. b) Fire hose or extinguisher nearby (worker trained in use of this equipment). c) Cutting, welding and other equipment is in good repair. d) Welding Curtains erected, (wall and floor coverings covered) where applicable. e) Fireproof tarpaulins suspended beneath work to collect spark where applicable. f) Area below cordoned off with danger tape, and tags in place where applicable. g) Equipment cleaned of all combustibles. h) Vessels, containers or ducts purged of flammable vapors. i) Adequate airflow through operation area. j) Tools and equipment that can cause spark identified

h) A risk assessment has been completed and hazards have been identified and discussed with workers. GAS LEAK TEST (if applicable)

Gas leak test to be carried out at intervals of _______hours/continuous (delete not applicable)

Time of Test

SPECIAL NOTES ISSUED BY NAME: _______________________________________ SIGNATURE: _____________ (Shift Superintendent)

DATE/TIME: ________________________________ TELEPHONE: _________________

THE SYSTEM CONTROL OPERATOR ________________________________ has been informed that this Permit has been issued. ACCEPTANCE The work to be carried out, the procedures of BPMC Hot Work Procedure (PM006) and the safe limits of the work-place have been fully explained by the Authorised Person and understood. I accept this Permit to Work and acknowledge responsibility for the safe and proper execution of the work, and for the safety and control of the persons in my charge. PERMIT ACCEPTED BY: (Person-in-charge) NAME: _____________________________ TIME: ________________ Telephone: ___________ SIGNATURE: _____________________________ PERMIT ACCEPTED BY: (Fire Watcher) NAME: _____________________________ TIME: ________________ Telephone: __________ SIGNATURE: _____________________________ CLEARANCE Work has been completed, and all persons assisting me have been removed, all equipment in the work area has been removed from the work area and the area is now fire safe and I understand that the Permit to Work is now “CANCELLED”. PERMIT CLEARED BY: (Person-in-charge) NAME: _____________________________ TIME: ________________ SIGNATURE: PERMIT CLEARED BY: (Fire Watcher) NAME: _____________________________ TIME: ________________ SIGNATURE: CANCELLATION Cleared Permit to Work received and area inspected. The System Control Operator, _____________________________________________________________________________________ Was notified at ______________ (Time) on ________________ (Date) that this Permit to Work was cancelled. SIGNATURE: (Authorised Person)


DEPARTMENT OF ELECTRICAL SERVICES ANNEXURE 11

CONFINED SPACE ENTRY PERMIT

DATE ISSUED:

DATE EXPIRES:

LOCATION:

PERSON-IN-CHARGE:

EQUIPMENT TO BE WORKED ON:

WORK TO BE PERFORMED:

STANDBY PERSON: RESCUE PLAN ATMOSPHERIC CHECKS:

OXYGEN: %

EXPLOSIVE: % L.E.L. (lower explosive limits)

TOXIC: PPM

TESTER’S SIGNATURE: SOURCE ISOLATION: PUMPS MOTORS

N/A

YES

NO

VENTILATION: MECHANICAL NATURAL AIR ONLY

N/A

YES

NO

ATMOSPHERIC CHECK AFTER ISOLATION:

Oxygen % > 19.5 % Explosive % L.E .L. < 10 % Toxic PPM < 10 PPM H2S (Hydrogen Sulfide)

TIME:

TESTERS SIGNATURE:

COMMUNICATION PROCEDURES: RESCUE PROCEDURES: N/A YES NO

EQUIPMENT: Direct reading gas monitor- tested. Safety harness & life lines for entry. Hoisting equipment available. Protective Clothing. Scaffolding erected correctly. All Electrical equipment listed. Non –Ferrous tools used. We have reviewed the work authorized by this permit and the information contained here-in. Entry cannot be approved if any squares are marked in the “NO” column. This Permit is not valid unless all appropriate items are completed. Permit Prepared by: (Supervisor)

Permit Received by: (Person-in-Charge)

This Permit is to be kept at job site. Return job site copy to the Supervisor on completion of job. Permit Cleared by:

Permit cancelled by:

Date: Time:

Date: Time:



ANNEXURE 12 RISK ASSESSMENT AND WORKERS REGISTER I ________________________________hereby declare that I undertake to complete a risk assessment in order to carry out work on apparatus/equipment on behalf of DES at the identified work site. 1.Location of worksite

2. Scope of work:

3. What risks can be identified: (Tick off all risks as identified for specific task)

yes yes a) Roadside work g) Environmental risks b) Pressure systems h) Confined spaces c) Working at heights i) Manual handling d) Harmful substances j) Equipment & tools risk e) Close proximity k) People risks e) Lifting/rigging l) Heating equipment f) Trenching m) Other

4.What steps are taken to minimize identified risks:

5. State names of workers assisting with whom the above risks have been discussed:

Names of persons on site

Signature

Withdrawal signature

I _______________________ hereby declare that the above stated risks have been discussed with all personnel involved in the scope of work and that steps to be taken to minimize the risks are understood by all. ___________________________ ___________________ ______________ Signature: Person-in Charge Date: Time: Withdrawal: I hereby declare that all workers involved in the above-mentioned work have been withdrawn, and informed that it is no longer safe to work and that the permit for access/work will be cleared. __________________________ ____________________ ________________ ____________ Name: Person-in-charge Signature: Date: Time:



ANNEXURE 13



ANNEXURE 14



ANNEXURE 15





ANNEXURE 16



ANNEXURE 17



ANNEXURE 18

PERMIT TO WORK ON/TEST MV/HV CABLES PERMIT NO.

PERMIT ISSUE TO (PIC) : 1. 2. 3.

The Control Operator, has been notified that this permit is to be issued for work on the

following mains and/or apparatus:

On which you are required to:

The System Control Operator has obtained confirmation that the aforesaid mains and/or apparatus have been ISOLATED from every source of supply, and have been TESTED and EARTHED AT CONTROL POINTS as indicated below. Padlocks have been applied whenever locking facilities exist and personal “Danger Do Not Make Alive” and “Danger do Not Remove Earth” Notices have been affixed as applicable:

CONTROL POINTS : (1) (2)

(3) (4)

The mains/ apparatus will not be made alive again from the system until you have signed off and returned this Work Permit. At the work place the mains and/or apparatus have been earthed or proved dead and these operations were:-

WITNESSED BY : (Competent Person) SIGNATURE:

PERMIT ISSUED BY : (Authorised Person) SIGNATURE:

DATE: TIME:

ACCEPTANCE : The work to be carried out and the safe limits of the work-place have been fully explained by the Authorised Person and understood. I have

seen the mains and/or apparatus earthed and/or proved dead at the work-place and accept this permit. I acknowledge responsibility for the safe and proper execution of the work, and for the safety and control of the person in my charge.

PERMIT ACCEPTED BY : (Person/s-In-Charge)

NAMES : 1. 2. 3.

SIGNATURES :

DATE/TIME :

SANCTION FOR TEST : We, the undersigned declare that the Work as specified in the above PERMIT TO WORK and PERMIT FOR NON EMPLOYEES has

been suspended, and having instructed the Person/s-In-Charge that it is no longer safe to continue with the Work and that all tools and equipment which could prevent testing of the apparatus has been removed, request the permit be suspended in order to carry out the test.

PERSON/S-IN-CHARGE : 1. 2. 3.

DATE: TIME:

We, the undersigned hereby declare that the testing of apparatus has been completed and that the earthing as detailed in the above Permit to Work has been reapplied and that the Work may be safely resumed and the permit to work above is again fully binding.

PERSON/S-IN-CHARGE : 1. 2. 3.

DATE: TIME:

CLEARANCE : I have completed, the above work and all personal working earths and shorting devices and those of persons under my control have been

removed. All persons under my control are clear of the mains and/or apparatus and have been warned that it is no longer safe to work thereon.

PERMIT ACCEPTED BY : (Person/s-In-Charge)

NAMES : 1. 2. 3.

SIGNATURES :

DATE/TIME :

CANCELLATION : Cleared Permit received and earthing equipment and precautionary notices removed at the work-place.

The Control Operator was notified at Time On Date

SIGNATURE : (Authorised Person)

Documents

2017 04 05 DES System Operating Regulations Revised 2