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Abstract

The present project was based on a full-scale test approach for investigating the H(2)S induced cracking in sour service line-pipes. Specifically, the major objective of the project was the assessment of:

- The effect of combined applied and residual stresses produced by all the relevant pipe-making processes on possible HSCC damage in the weld area;
- The possible effects of cold bending on both hydrogen induced cracking (HIC) and HSCC.

A set of tests were dedicated to thick-wall pipes, where the effect of residual stresses was thought to be more critical. The main goal was to compare the influence of different stress conditions (before and after cold expansion) and forming processes with the occurrence and distribution of the HIC and HSCC events. An additional test was dedicated to thin wall spiral pipes. The most important general finding is that no pipe failure occurred although a variable amount of H(2)S-induced damage was observed in all the tests concerning the 25.4 mm pipes. By detailed post-test examination and evaluation of the experimental data some general conclusions were drawn. awn.

Additional information

Authors: VOGT G, European Pipeline Research Group (EPRG), c/o Mannesmannröhren-Werke AG, Mannesmann Forschungsinstitut, Duisburg (DE);PONTREMOLI M, European Pipeline Research Group (EPRG), c/o Mannesmannröhren-Werke AG, Mannesmann Forschungsinstitut, Duisburg (DE)
Bibliographic Reference: EUR 16624 EN (1997) 64pp., FS, ECU 11.50
Availability: Available from the (2)
ISBN: ISBN 92-828-0277-9
Record Number: 199710755 / Last updated on: 1997-06-23
Category: PUBLICATION
Original language: en
Available languages: en
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