This IGN applies only to pipes and fittings which form part of the system that is owned by the utility.
It details the procedure for the testing of PE and PVC water and sewerage pressure pipelines laid in the U.K.
This IGN also details the procedure for the testing of ductile iron, steel and GRP water and sewerage pressure pipelines laid in the U.K. The procedure is essentially the same as that detailed in BS EN 805 and the methods traditionally used on these materials.
The test methods described above are only appropriate where a test section of the pipeline and associated fittings can be completely isolated. Where new pipelines are already installed as part of a working water system – as, for example, is the case for most rehabilitation projects – a 10 minute mains renewal test for use on short test lengths is provided in Section 7.
It is good practice to also test joints and connections to the pipeline to ensure a leak free system. A short, visual test is provided in Section 8 for this purpose.
One or more ‘Common Editorial Caveats’ apply – see ‘WIS & IGN Library / Navigation & Caveats’ for details.
An application has been submitted to Water UK Standards Board for revision of Issue 2. It is proposed that in this revision:
- testing of ductile iron / steel / GRP follows the procedure in BS EN805 (revision underway publication expected in 2022) by direct reference to that standard;
- a clear and precise procedure for testing of polyethylene mains and services is provided.