Guide to the methodology, overview of timescales and testing requirements for in-service testing (IST).
PDF, 1.69MB, 63 pages
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The in-service testing (IST) handbook is a culmination of the IST group 1 and 2 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 Regulatory Delivery (RD) 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.
If you wish to speak to a member of staff please contact:
Gas and electricity metering team: In-service testing
Reception 020 8943 7272
Published: 13 March 2014
Updated: 21 August 2017
- IST handbook updated to version 3.0
- IST handbook updated to version 2.6
- 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.
- In-service testing handbook version 2.3 has now been published. It includes the contact details of a new NMO approved IST test station.
- First published.
From: Regulatory Delivery