From 1975 to 2003, guidelines and latest industry practices to avoid sulfide stress cracking (SSC) in upstream H2S-containing services have been published in NACE Standard MR0175. Over those years, many changes have been made to the standard, culminating in its evolution to NACE MR0175/ISO 15156 seven years ago. However, there have been difficulties for Owner/Operators in the application of this latest standard, and for vendors in meeting its requirements.

As a result, there are those who are choosing to invoke NACE MR0175-20021 , instead. This paper will discuss some of the reasons why this is so, including the effects of changes in the sour service definitions. Examples of exceptions taken will be examined. And cost issues involved in meeting MR0175/ISO 15156 will be presented.

Subject
Costs, Materials, Piping, Welding procedures, Valves, Compliance, Gas pressure, Partial pressures, Equipment, Surveys, Stainless steel, Sulfide stress cracking, Stress corrosion cracking
Keywords:
sulfide stress corrosion cracking, sour service, NACE MR0175
© 2011 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2011
Association for Materials Protection and Performance (AMPP)
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