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IGN 4-37-02 Issue 1 Design against surge and fatigue conditions for thermoplastic pipes

This Information and Guidance Note, offers new advice on dealing with transient pressures in plastic pipelines.

Past advice given in the Pipeline Materials Selection Manual (PMSM) issued for the Water Industry in 1995 by WSA, has been recognised as being extremely conservative. New experimental data obtained for UKWIR now make it possible to establish more realistic rating criteria to cope with ‘surge and fatigue’ conditions for the full range of thermoplastic pipe materials that are currently used by the Water Industry.


One or more ‘Common Editorial Caveats’ apply – see ‘WIS & IGN Library / Navigation & Caveats’ for details.

Based on the Standards Board’s enquiries (Autumn 2021) of stakeholders (BPF PG & PRI/88/3 representatives) the consensus view is that the existing document is likely to require updating. The Board has therefore initiated (January 2022) a preliminary review of its continuing relevance and currency.

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