Guidance

In-service testing handbook for gas and electricity meters

Guide to the methodology, overview of timescales and testing requirements for in-service testing (IST).

• From: Office for Product Safety and Standards
• Published: 13 March 2014
• Last updated: 14 August 2024 — See all updates

Applies to England, Scotland and Wales

Documents

In-Service Testing Handbook (IST) version 3.7

PDF, 1.27 MB, 65 pages

Details

The in-service testing (IST) handbook is a culmination of the IST group 1 and 2 report and the IST group 3 report. It is designed to provide stakeholders who are undertaking sample testing with an understanding of the sampling methodology, test processes, assessment methods and final assessment criteria. The handbook includes details of IST test stations that have been approved by the Office for Product Safety and Standards for the in-service testing of gas and electricity meters.

The handbook is a working document and amendments will be made when necessary as the implementation of IST develops over time.

Contact

If you wish to speak to a member of staff please contact:

Email:

gas.metering@businessandtrade.gov.uk

electricity.metering@businessandtrade.gov.uk

Gas and electricity metering team: In-service testing
Office for Product Safety and Standards
Stanton Avenue
Teddington
Middlesex
TW11 0JZ

Reception: 020 8943 7272

Published 13 March 2014
Last updated 14 August 2024 + show all updates

1. 14 August 2024

   IST handbook updated to version 3.7.

2. 20 March 2024

   IST handbook updated to version 3.62

3. 10 May 2022

   IST handbook updated to version 3.61.

4. 20 February 2020

   The In-service testing handbook has been updated to version 3.5

5. 27 February 2019

   The In-service testing handbook has been updated to version 3.4

6. 23 August 2018

   The In-service testing handbook has been updated to version 3.3

7. 4 April 2018

   IST handbook updated to version 3.2

8. 19 January 2018

   IST handbook updated to version 3.1

9. 21 August 2017

   IST handbook updated to version 3.0

10. 24 May 2016

    IST handbook updated to version 2.6

11. 10 March 2015

    Revision of testing requirements for MID approved gas meters after stakeholder review of previous testing done to date to improve the overall process and incorporate best practice and addition of new NMO approved IST Test station.

12. 21 May 2014

    In-service testing handbook version 2.3 has now been published. It includes the contact details of a new NMO approved IST test station.

13. 13 March 2014

    First published.