Document
WIS 4-01-03A Amendment 1 October 2024 – Amendment to: Specification for hydrostatic pressure testing of polyethylene and polyethylene barrier water supply pipelines and sewer rising mains
Introduction
Amendment 1 corrects errors in WIS 4-01-03 Issue 1.
An industry Task & Finish Group is currently preparing a draft of WIS 4-01-03 Issue 2 that will incorporate these amendments and further develop the WIS’s content. This will include guidance on testing against hydrants and air valves.
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