There is significant interest within the pipeline industry in transporting fuel-grade ethanol (FGE) as a result of the increased usage of ethanol as an oxygenating agent for gasoline and interest in ethanol as an alternative fuel. Currently, FGE is transported primarily by railroad tanker cars, tanker trucks, and barges. Stress corrosion cracking (SCC) has been observed in carbon steels in contact with FGE ethanol in user terminals, storage tanks, and loading/unloading racks. This paper summarizes the results of recent research, funded by the Pipeline Research Council International (PRCI), in which methods for prevention of internal SCC in ethanol pipelines were evaluated. These methods included the addition of inhibitors and oxygen scavengers to the ethanol and other methods of deaeration.

Subject
Crack growth, Corrosion rate, Additives, Simulated fuel grade ethanol, Oxygen scavengers, Vapors, Deaeration, Corrosion inhibitors, Steel, Oxygen, Ethanol, Corrosion potential, Stress corrosion cracking
Keywords:
ethanol, pipelines, stress-corrosion cracking, inhibitors, oxygen scavengers, deaeration
© 2008 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).
2008
Association for Materials Protection and Performance (AMPP)
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