NSI 33

Question 1

Commissioning

Answer 1

The preparation for and energising of Equipment for the first time. This is a two-stage process consisting of Stage 1 Commissioning and Stage 2 Commissioning. Further information is available in TP106 “Equipment Commissioning and Decommissioning”.

Question 2

Commissioning Engineer

Answer 2

Responsible for defining the arrangements for achieving safety from the System, to manage the implementation of UK/BP/SE 301 – “Managing Safety Interfaces” requirements (including Operations Diagrams) and to confirm the adequacy of the health and safety file on completion.

Question 3

HV System Change Certificate. (HVSCC)

Answer 3

A certificate used to notify contractors and National Grid Operating Units when adding Plant or removing Equipment to/from the System, and changes in name or Nomenclature for existing circuits or Equipment. On the completion of Part 6 the changes defined in Part 3 become effective. The Local Control Person’s copy of the document shall be the definitive document. The Control Person’s copy of the document shall have printed names in Part 6, backed up with logged statements.

Question 4

Notification of Change Certificate (NCC)

Answer 4

A certificate used to notify Contractors and National Grid Operating Units, of a change to the original date on an existing HVSCC.

Question 5

Occupier

Answer 5

The person having control over the premises and who regulates and controls the work that is done at that location.

Question 6

Occupiers Representative

Answer 6

The person identified by the Occupier who shall discharge the duties and responsibilities of the Occupier on the premises.

Question 7

Control Person

Answer 7

The Control Person (Operations) and Control Person (Safety) for the HV System as defined in the Site Responsibility Schedule. Where authorisations allow, this may be done by the Local Control Person.

Question 8

Local Control Person

Answer 8

A Senior Authorised Person (SAP 1 and/or 2 and 3) acting as the Control Person (Operation) and Control Person (Safety) for LV and mechanical Equipment. Where Equipment is to be transferred to a CPS1 the Local Control Person shall be an SAP1.

Question 9

Operations Diagram

Answer 9

The series of National Grid issued diagrams which define the following information: (Ref. TP 119 Operation Diagrams)
Sheet 1 S/S single line diagram
Sheet 2 S/S Technical Data Sheet
Sheet 3 S/S Gas Zones
Sheet 4 S/S Gas Zone Alarm Schedule
Sheet 5 S/S Oversailing Hazard Schedule
Routes National Routes
OHL OHL Colours (Technical Data) Accessed from http://infonetuk/ohl/
Routes Oversailing Conductors Schedule

Question 10

Plant

Answer 10

Electrical and/or Mechanical items, which are not part of the System and Disconnected from the System.

Question 11

System Connection Form

Answer 11

A document used to formally authorise connection of Plant subject to the control of another party’s Safety Management System to the System. See appendix C.

Question 12

Isolation Request Form

Answer 12

This document is used to define, secure and maintain safety precautions across the interface of two Safety Management Systems. See appendices D & E.