VCI and DH anti-corrosion methods have been used for decades for both short or long term preservation. Despite this, many engineers do not understand the nuances of each system. This paper discusses pre-lay up considerations, general guide lines for using each preservation system, examples of typical usage, and the combined use (rarely seen in specifications). Combined use generally yields the most cost effective protection.

Subject
Costs, Preservation, Water, Piping, Moisture, Packaging, Metal surfaces, Volatile corrosion inhibitors, Plastics, Powders, Equipment, Corrosion protection, Oil
Keywords:
Dehumidification (DH), mothballing, plant lay-up, sulfur oxides, hydrogen sulfide, chlorine, humidity, vaporizers, emitters, VCI
© 1998 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).
1998
Association for Materials Protection and Performance (AMPP)
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