A new international standard is in the final draft stage of preparation and should be published as a fully fledged standard by 2004. This new standard is the result of a six-year effort by NACE, EFC and ISO/TC 67/WG 7. The standard is based, in the main, upon NACE MR0175 and the European Federation of Corrosion Reports 16 and 17. The new standard provides methods for the qualification and selection of metals resistant to cracking in sour oil and gas production. The paper describes the background to the development of the new standard and provides a brief summary of its contents with the aim of outlining its impact on materials selection for those already familiar with previous documents. The paper also describes the make up and working of the ISO 15156 Maintenance Panel that will provide for the continuous maintenance of the document.

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