A computer program has been developed for the purpose of estimating the corrosion rates and the related risk of operating dry gas pipelines under conditions where upsets may occur. An upset is here considered as an event that may cause corrosive liquid water to be present in some part of the pipeline for a certain time period. The program is based on modelling of the physical processes of water condensation, water transport and subsequent evaporation towards the end of the upset period. The modelling also includes water absorption in solids present in the pipeline. The corrosion rate is quantified using a well-known model of CO2 corrosion. Upsets in a single branch of a system of pipelines can also be modelled. The program is meant to be a screening tool that can assist in the planning of an inspection program.

Subject
Films, Thin films, Water, Piping, Corrosion rate, Solids, Wetting, Condensation, Pipelines, Liquid water, Corrosion modeling, Glycol, Upset
Keywords:
Gas transportation, pipelines, internal corrosion, upsets, modelling
© 2004 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).
2004
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.