RR129 - Review of external stress corrosion cracking of 22%Cr duplex stainless steel Phase 1 - Operational data acquisition

Failure of offshore equipment leading to release of hydrocarbons has potentially serious safety, environmental and financial implications. One important source of such releases is corrosion related failures of offshore process plant. Following failures of duplex stainless steel in 2001/2002 resulting from chloride stress corrosion cracking, the Health and Safety Executive commissioned a review of the offshore operation of duplex stainless steel process plant with respect to chloride stress corrosion cracking. This report reviews the occurrence and mitigation of chloride stress corrosion cracking in the UK offshore sector, including design, fabrication, repair and operation of offshore facilities.

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Updated 2021-04-16