UK Power Networks DSR 01 005 v4.0 Work On Customer HV Systems

Owner Name Peter Vujanic Title Head of Health, Safety and Environment

Signature

Date 01 May 2016

Authoriser Name Dudley Sparks Title Operational Safety Manager

Signature

Date 01 May 2016

This document forms part of the UK Power Networks Integrated Management System and compliance with its requirements is mandatory. Departure from these requirements may only be taken with the written approval of the above authoriser.

Revision Record Version number 4.0 What has changed? Owner name changed, change of name of the HV Consumers Plant Authority Date published 01/05/2016 form to HV Consumers Apparatus Authority. Introduction and Purpose and the Scope have been changed to highlight control functions. Additional Next review date 07/03/2019 paragraph in section 9.2 highlighting when testing is required by a customer on their network. Removal of references to regional variations in Introduction and Purpose Prepared by D Daintree Why has it changed? Full review for the new 2016 DSRs.

Revision Record Version number 3.0 What has changed? Added appendices 11 and 12 (example forms) and reference to unregulated Date published 09/10/2015 form number

Next review date 21/06/2018 Why has it changed? Additional information for staff. Prepared by N. Saunders

Version number 2.0 What has changed? Change of authoriser Date published 16/07/2015 Why has it changed? Next review date 21/06/2018 Previous authoriser left company.

This printed document is valid at 23/05/18 check after this date for validity. Page 1 of 16 Prepared by D. Daintree

Who needs to know?

☐ All UK Power Networks Staff ☒ Network Operations ☒ Asset Management ☒ EPN ☒ Capital Programme ☒ LPN ☒ Connections ☒ SPN ☒ Contractors ☒ Commercial Services ☒ Customer Services ☐ Logistics ☐ Finance ☒ Network Control ☒ G81 External website ☒ Network Operations Connections ☐ HR & Communications ☐ Transport Services ☒ HSS&TT ☐ Strategy and Regulation ☒ In Business HSS ☒ UK Power Networks Services ☒ Safety Reps ☒ Airports ☒ ICP’s (Independent Connection Providers) ☒ HS1, DLR & Commercial buildings ☒ IDNO’s (Independent Distribution ☒ MUJV / Allenby Network Operators) ☒ Projects & Business Development ☐ Information Systems ☐ Others (specify) ☒ Meter Operators

Contents UK Power Networks DSR 01 005 v4.0

Introduction and Purpose This document details the procedures to be followed when work and/or operations are undertaken by UK Power Networks’ staff on a network not controlled by UK Power Networks.

It also covers situations where a Customer requires isolation of the supply from the UK Power Networks system to enable them to carry out work on their own apparatus.

Scope This Procedure details the actions to be taken under the following circumstances:

 Work and/or operations are to be carried out on a Customer’s HV equipment by UK Power Networks personnel or Contractors, at the Customer’s request.  Isolation and Earthing of UK Power Networks equipment is required to enable the Customer to carry out work on their own equipment.  Isolation and Earthing of the Customer’s HV equipment is required to enable work on equipment owned by UK Power Networks.

The arrangements for the operation of the Customer’s HV equipment and for the operation of UK Power Networks’ equipment at the interface is set out in the Site Responsibility Schedule (SRS) that should be in place for all HV Customer supplies.

Where a contract exists for UK Power Networks personnel to undertake control, operate and maintain the Customer’s HV Network on their behalf, this procedure does not apply.

Objective The objective of this procedure is to ensure that all operations and work on, or adjacent to, a high voltage interface, or on the Customer’s private HV network are undertaken in line with current Distribution Safety Rules and relevant legislation.

References

DSRs Distribution Safety Rules

Ofgem Distribution Code Electricity at Work Regulations Electricity Safety, Quality and Continuity Regulations 2002, as amended (2006)

National Grid Grid Code

NOP 10 015 HV Site Responsibility Schedules

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HSS 01 062 Undertaking On-site (Point of Work) Assessment

HSS 01 069 Personal Protective Equipment (PPE)

GOP 13 Generic Task Risk Assessment HV & EHV Switching – Ground Mounted

GOP 17 Generic Task Risk Assessment HV Switching - Overhead

Definitions

UK Power The electricity network owned by UK Power Networks and normally Networks network operated by UK Power Networks authorised personnel Customers An HV electricity network not owned by a Distribution Network Network Operator (DNO) and receives an HV supply from a DNO A document defining the ownership of equipment and apparatus at Site Responsibility the boundary between a DNO and other networks. It also specifies Schedule which party is responsible for controlling & operating switchgear, maintenance and issuing documents Operation & A contractual agreement in place with a customer where UK Power Maintenance Networks agrees to operate and maintain their electrical HV/LV Agreement distribution network HV Consumer A document signed by the customer which gives authority to a Apparatus nominated authorised person to carry out operations, work/and or Authority (CAA) control on consumer’s apparatus HV Operational A certificate designed to provide written confirmation of isolation Isolation and and/or earthing where: Earthing (OIE) Certificate (i) UK Power Networks authorised personnel request the Customer’s authorised personnel to carry out switching operations on Customer’s switchgear to isolate and/or earth equipment to be worked on; or (ii) the Customer’s authorised personnel request UK Power Networks authorised personnel to carry out switching operations on UK Power Networks equipment or Customer’s switchgear to isolate and/or earth apparatus. The OIE Certificate includes sections for either party to request the isolation and earthing operations and receive written confirmation of completion, before accepting the circuit. The relevant sections of the certificate must be completed and the certificate cleared and cancelled before the equipment is returned to service. The OIE Certificate is not an authority for UK Power Networks to operate the customer’s HV equipment, or vice-versa, other than to UK Power Networks DSR 01 005 v4.0

operate earth switches to facilitate testing. All other operations require a written agreement as set out in Section 8.2 of this procedure

Responsibilities The ownership of any system, plant or equipment generally determines the responsibility for its control. This will normally be defined in the Site Responsibility Schedule required by the Distribution Code, which should be in place for all Customer HV supplies (refer to NOP 10 015).

It is the responsibility of the DNO to ensure that a written agreement has been prepared and signed by each party involved for each site where work or operations are to be carried out by UK Power Networks personnel on a Customer’s HV electricity network (see section 8.2 below).

The agreement shall include the Site Responsibility Schedule and a diagram showing the relationship between the Customers HV Network and the local DNO’s network. All points of isolation shall be shown, irrespective of voltage. The Schedule and diagram shall be checked and confirmed by the relevant UK Power Networks Senior Authorised Person as up to date before any operations or work are carried out on the equipment.

This agreement shall define the extent of any authority of UK Power Networks personnel to carry out work or operations on the Customer’s HV electricity network.

The customer should provide sufficient records for the safe operation of the equipment such as network drawings and maintenance records.

Where UK Power Networks are requested, in un-planned or fault situations, to carry out work on Customer-owned equipment the above mentioned agreement (see Para. 6.2) may not exist or may not be available. In this case, the UK Power Networks representative shall collect and physically check information about the network to enable the later completion and signing of an agreement. A Customer Apparatus Authority form (or equivalent) shall be signed by the Customer, who shall also provide a written indemnity for UK Power Networks personnel to operate the Customer’s equipment (see Appendix A).

Records UK Power Networks shall provide a Substation Log Book at HV substations that provide a supply to HV Customers, in which all instances of entry into, operations and work in the UK Power Networks substation shall be recorded.

A Site Responsibility Schedule is provided for all relevant sites, as described above.

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1. Authorisation from UKPN for UKPN staff to work on or operate Customers’ Equipment Due to the additional risks involving customers’ equipment, the person carrying out switching operations, or receiving or issuing an HV Operational Isolation and Earthing Certificate, or receiving an HV Consumer’s Apparatus Authority (CAA) safety document shall be a Senior Authorised Person (SAP).

UKPN staff appointed as Competent, Authorised or Senior Authorised may carry out the same (but not extend) their permitted activities/duties on a customer’s system, except for the limitation stated in 8.1.1 above.

Staff appointed as Competent or Authorised shall only work on a Customer’s system under safety documentation issued by a UKPN appointed Senior Authorised Person.

2. Authority from the Customer for UKPN staff to work on or operate Customer’s Equipment Before UK Power Networks’ staff can begin operations or work on Customer-owned apparatus and equipment, the customer’s written authority shall be obtained. Such an authority may be given in various forms, for example  The schedule of Operation and Maintenance Agreement  Specific contract  HV Consumer’s Apparatus Authority (CAA) The customer must also indemnify UKPN staff against accidental damage or injury, in writing (see Appendix A).

3. Rules Work and operations undertaken by UKPN personnel on a Customer’s HV system, must as far as is reasonably practical, be in accordance with UK Power Network’s Distribution Safety Rules and all other applicable UKPN operating procedures, unless agreed otherwise in writing. In circumstances where UK Power Networks staff are required to work in accordance with any other companies' safety rules/procedures the requirements are listed in the DSRs under section 1.2.

4. Objection The UK Power Networks SAP shall have the final decision on whether to operate the Customer’s switchgear. In the absence of adequate knowledge or proof of adequate maintenance, additional precautions shall be taken before operating the Customer’s switchgear. These may include using a Remote Operating Device (ROD) if the customer consents, or requiring the switchgear to be made dead before operation. UK Power Networks DSR 01 005 v4.0

5. Inspection of Safety Standards When operations are carried out on equipment controlled by the customer, the UK Power Networks’ SAP must accompany the customer’s Authorised Person and satisfy himself that the isolation and earthing of the equipment has been carried out to the standards required by UKPN Distribution Safety Rules. When operations are carried out on equipment controlled by UKPN for the customer, the customer’s authorised person should be invited to accompany the UK Power Networks’ SAP during the switching operations.

6. Use of Switchgear Locks and Safety Locks  On equipment operated by the customer, the customer’s authorised person will apply his safety locks at each point of isolation from supply.  On equipment operated by UK Power Networks, the UK Power Networks’ SAP will apply his safety locks at each point of isolation from supply.  In both cases, the safety lock keys shall be secured in a joint key safe if provided or available. One unique key safe locking key shall be held by the Customer’s AP and another shall be held by the UK Power Networks SAP. Alternatively, a similarly secure system shall be used to ensure that the points of isolation cannot be removed without the knowledge and consent of both parties.  The keys to locks securing Circuit Main Earth points shall normally be retained by the person who is to supervise the work.

7. Before Work is commenced by UKPN staff In addition to the requirements above, the following are also required before starting work on customer’s equipment  Written instruction from the customer  Risk assessments in accordance with HSS 01 061 and HSS 01 062  The right PPE for the work being undertaken (HSS 01 069)

Ownership/work Scenarios

8. Work on Customer’s Equipment by UKPN Personnel Where a current Operation and Maintenance (O&M) agreement is in place for a piece of apparatus, all work and operations shall be carried out as if the apparatus were part of UK Power Networks’ network. Where work is taking place under a specific contract or CAA (i.e. there is no O&M agreement), the operations and work carried out does not need to be recorded by Network Control, however shall be recorded on an HV Switching Schedule which will be prepared prior to commencing the works (see appendix A). If work is taking place in the UK Power Networks area, Network Control will be informed before work starts.

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 The UKPN Senior Authorised Person (SAP) shall complete the relevant parts of the OIE Certificate and return it to the Customer’s Authorised Person (AP).

 The Customer’s AP shall then proceed with the isolation and earthing of their HV equipment. The UKPN SAP shall accompany the Customer’s AP and satisfy himself that the isolation and earthing of the equipment has been carried out in a manner commensurate with the UK Power Networks Distribution Safety Rules.

 The Customer’s AP shall then apply his own safety locks at each point of Isolation. The safety lock keys will be secured as detailed in section 8.6 above.

 The UK Power Networks SAP shall ensure suitable Caution and Danger notices are applied in accordance with the UK Power Networks Distribution Safety Rules.

 The Customer’s AP shall then complete the relevant sections of the OIE Certificate to confirm the requested operations have been completed, and return it to the UK Power Networks’ SAP, who shall acknowledge receipt by signing the form in the appropriate place.

 The UK Power Networks SAP shall then issue the appropriate UK Power Networks safety document(s) in accordance with the UK Power Networks Distribution Safety Rules. If all other requirements of this procedure have been met, work may then proceed.

 On completion of the work, the safety document(s) shall be cleared and cancelled in accordance with the UK Power Networks Distribution Safety Rules.

 After the safety documents have been cleared and cancelled, the UK Power Networks SAP shall complete the section of the OIE Certificate which confirms cancellation of the certificate and return it to the Customer’s AP, along with any appropriate operational keys.

Customer-controlled Switchgear to be operated by UKPN personnel

 The SAP must ensure that all the requirements of section 8 of this document are satisfied.

 The UK Power Networks SAP shall then operate the Customer’s switchgear and apply his own Safety Locks and Caution/Danger notices in accordance with the UK Power Networks Distribution Safety Rules and Procedures. An OIE Certificate is not required under these circumstances.

 Work on the equipment shall then proceed under the UK Power Networks Distribution Safety Rules, using the appropriate UK Power Networks safety document(s). UK Power Networks DSR 01 005 v4.0

9. Work by the Customer requiring operation of UK Power Networks equipment  Where a Customer wants to carry out work on their own equipment, which can be energised from equipment controlled by UK Power Networks, the Customer shall request isolation and earthing using an OIE certificate and return it to the UK Power Networks SAP.  The UK Power Networks SAP shall then proceed with the isolation and earthing of the UK Power Networks owned equipment. The Customer’s AP shall be invited to accompany the UK Power Networks SAP during the switching operations.  The UK Power Networks SAP shall apply his Safety Locks at each point of Isolation on the UK Power Networks switchgear in the normal manner. Unless otherwise agreed in the Site Responsibility Schedule there shall be no dual locking of UK Power Networks switchgear. The safety lock keys will be secured as detailed in section 8.6 above.  The UK Power Networks SAP shall then confirm completion of the request using the OIE Certificate and return it to the Customer’s AP who shall acknowledge receipt by signing the form in the appropriate place. The Customer may then proceed with the work on their own equipment, using their own safety rules and documentation.  When testing is required by a customer on their network the Earth may be removed/re-applied under the supervision of an UK Power Networks SAP as per section 2B of the OI&E document  On completion of the work, the Customer’s AP shall complete the section of the OIE Certificate which confirms cancellation of the certificate and return it to the UK Power Networks SAP, along with any appropriate operational keys.

10. Equipment which requires isolation from both UK Power Networks switchgear, and from switchgear owned by the Customer.  Where the equipment to be worked on requires isolation both from UK Power Networks controlled switchgear, and from switchgear controlled by the Customer, the UK Power Networks SAP and the Customer’s AP must work in close liaison to isolate and earth their respective equipment in accordance with Sections 9.1 and 9.2 of this procedure.  HV Operational Isolation and Earthing Certificates shall be issued by either the Customer’s AP or the UK Power Networks SAP, depending on which party is to carry out the work. If work is to be carried out by both UK Power Networks and the Customer then all OIE Certificates shall be cross-referenced by both parties.

11. As detailed in Section 8.5, the UK Power Networks SAP shall satisfy himself that the Customer’s HV switchgear has been isolated and earthed in the correct manner. The safety lock keys will be stored as described in section 8.6 above.  It is essential that the UK Power Networks SAP and the Customer’s AP continue to liaise closely during the works, and discuss and agree the vital operational

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Superseded Documents LPN COP4 OI G10/- Work on Customer’s High Voltage Equipment V12/S3/14 Work by Engineers on HV Systems not owned by Eastern Electricity UK Power Networks DSR 01 005 v4.0

Appendix A – Example of Consumer’s Apparatus Authority Front

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UK Power Networks DSR 01 005 v4.0

Appendix B Example of HV Operational Isolation and Earthing Certificate Front

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OPERATION, ISOLATION AND EARTHING CERTIFICATE: ...... Number: ......

Substation: ...... Circuit to be Worked on: ......

This Document is NOT a Permit-to-Work or Sanction-for-Test

1. ISOLATION 1A. Request To: ...... Please isolate the following apparatus: ...... Requester’s Name: ...... Job Title: ...... Time: ...... Date: ...... Signature: ......

1B. Issue Issued to: ...... UK Power Networks Authorised Person/Customers Authorised I hereby confirm that the following apparatus has been isolated/and locked off Points of isolation are: ...... Issued with the consent: ...... UK Power Networks Control Engineer/Customers Control Operator Signed: ...... being a UK Power Networks Authorised Person/Customers Authorised Person Time: ...... Hours Date: ......

2. EARTHING 2A. Request To: ...... Please earth the following apparatus: ...... Requester’s Name and Job Title: ...... Time: ...... Hours Date: ...... Signature: ......

2B. Issue Issued to ...... being a UK Power Networks Authorised Person/Customers Authorised Person ...... I hereby confirm that the following apparatus has been earthed Points of Earthing are: ...... All work will be undertaken by competent people under a suitable safe system of work.

If the earth(s) are to be removed this must only be under the supervision of UK Power Networks Authorised Person/Customers Authorised Person. Issued with the consent of: ...... UK Power Networks Control Engineer/Customers Control Operator Signed: ...... being a UK Power Networks Authorised Person/Customers Authorised Person Time: ...... Hours Date: ......

3. RECEIPT

0 1 0 1

N I hereby acknowledge receipt of this certificate and Key: ...... P U Signed: ...... being a UK Power Networks Authorised Person/Customers Authorised Person Time: ...... Hours Date: ......

Back UK Power Networks DSR 01 005 v4.0

1. RETURN & CANCELLATION

I here by declare that all relevant Permits-to-Work and Sanction’s for Test issued on behalf of UK Power Networks/Customer are now cancelled and all additional earths and staff under my control have been withdrawn.

The operational state of the apparatus is the same as detailed in 2B with the following exceptions (if none state none) ...... Signed: ...... being the UK Power Networks/Authorised Person/Customers Authorised Person Person: ...... Time: ...... Date: ...... I hereby declare that this certificate is now cancelled Signed: ...... being the UK Power Networks Authorised Person/Customers Authorised Person Cancelled with the consent of: ...... UK Power Networks Control Engineer/Customers Control Operator Time: ...... Date: ......

2. REMOVAL OF EARTHS 5A. Request To: ...... Please remove earths from the following apparatus: ...... Points of Earthing are: ...... Requester’s Name: ...... Job Title: ...... Time: ...... Date: ...... Signature: ......

5B. Confirm Issued to ...... being a UK Power Networks Authorised Person/Customers Authorised Person I hereby declare that the earths have been removed from the following apparatus: ...... Confirmed with the consent of: ...... UK Power Networks Control Engineer/Customers Control Operator Signed: ...... being the UK Power Networks Authorised Person/Customers Authorised Person Time: ...... Date: ......

3. RE-ENERGISING 6A. Request To: ...... Please remove the safety locks and energise the following apparatus: ...... Requester’s Name: ...... Job Title: ...... Time: ...... Date: ...... Signature: ......

6B. Confirm I hereby confirm that the locks have been removed and the following apparatus has been energised ......

Re-energised with the consent of: ...... UK Power Networks Control Engineer

Signed: ...... being a UK Power Networks Company’s Authorised Person/Customers Authorised Person Time: ...... Date: ......

4. COMPLETION I hereby confirm that all switching associated with this document is now complete Signed: ...... being the UK Power Networks Authorised Person/Customers Authorised Person Time: ...... Date: ......

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HV Consumer’s Apparatus Authority (CAA) Office Depot (ref UPN 9016)

HV Operational Isolation and Earthing (OIE) Office Depot (ref UPN1010) Certificate

Site Responsibility Schedule refer to NOP 10 015

HV Switching Schedule template NOP 60 004a (EPN) NOP 80 038 a & b (SPN)

Indemnity See below

Standard Form of Indemnity It is part of the terms of the arrangement (insert reference) that you shall indemnify UK Power Networks against any claims which may be made against UK Power Networks in respect of damage to property whether belonging to you, UK Power Networks, or third parties and also you shall indemnify UK Power Networks in respect of any claims arising out of injury to any persons whether they are your employees, or employees of UK Power Networks or injuries to persons who do not fall into either of the preceding classes except where negligence on the part of UK Power Networks is admitted by UK Power Networks or can be proved against UK Power Networks. If the arrangement referred to above comes into operation, then it is a term and condition of that arrangement that the indemnity referred to in the preceding paragraph shall come immediately into effective force and operation.