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The OTI 95 635 reference in NACE MR0175

22nd March 2016

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Question:

During the last ISO/TC 67 plenary meeting on 2012-09-19/20 in Rio the UK delegation had a request to the ISO 15156 MP regarding ISO 15156-2. Following resolution was taken and is in the minutes: Resolution 2012/08 (Rio de Janeiro, 2012) The British delegation, noted that ISO 15156-2 includes a reference to the British publication OTI 95 635, Testing method to determine the susceptibility to cracking of line pipe steels in sour service. This publication is about 20 years old and the British delegation would request the ISO 15156 Maintenance Panel under WG 7 to review whether this British publication is still needed and if so to develop an international standard on this subject, so that the British publication could be withdrawn. Additional information: • OTI 95 635 can be found via: https://www.hse.gov.uk/research/otipdf/oti95635.pdf • The document is mentioned only in ISO 15156-2: B.4.3 Full pipe ring tests Full pipe ring tests may be used. The document HSE OTI-95-635 describes a test and acceptance criteria. NOTE Residual stress has been shown to play an important role in the initiation of SOHIC and SZC. It is sometimes considered that such stresses in field situations are better represented in large-scale specimens. and in Bibliography [27] HSE OTI-95-635 7), A test method to determine the susceptibility to cracking of line pipe steels in sour service 7) UK Health and Safety Executive, HSE Books, PO Box 1999, Sudbury, Suffolk CO10 2WA, UK [ISBN 0-7176-1216-3].

Answer:

Developing a new international standard is outside the scope of the Maintenance Panel. The British publication is still assumed to be technically relevant, but the OTI 95 635 reference will be removed if the publication is withdrawn.

This question is in relation to NACE MR0175/ISO 15156-2 Annex B.4.3

Reference: ISO 15156 Maintenance Panel Inquiry #2012-10.

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Oil and Gas Corrosion Ltd is an independent materials and corrosion consultancy for the Oil and Gas industry. Oil and Gas Corrosion Ltd is under the guidance of Ivan Gutierrez. Ivan has more than 20 years’ experience in materials and corrosion and is a member of the National Association of Corrosion Engineers (NACE), a professional member of the Institute of Corrosion (MICorr) and the Society of Petroleum Engineers (SPE). He is a recognised materials and corrosion authority recognised as a Great Britain national expert member of the British Standard Institution committee PSE/17/67/7 “Corrosion Resistant Materials” and internationally as a member of Task Group 299 on the Oversight of Maintenance Panel for NACE MR0175 / ISO 15156. “Materials for use in H2S-containing environments in oil and gas production”, IOGP 15156 Committe (ISO/TC 67/WG 7 “Corrosion Resistant Materials”. Ivan is also a member of ISO/TC 67/WG 8 Materials, corrosion control, welding and jointing, and non-destructive examination (NDE) which is responsible for standards such as ISO 21457 “Materials selection and corrosion control for oil and gas production systems”. Oil & Gas Corrosion has headquarters in the United Kingdom providing services to clients across the globe.

 

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