1、API RP*1b329607322900553013494SPECIAL NOTESAPI publications necessarily address problems of a general nature.With respect to par-ticular circumstances,local,state,and federal laws and regulations should be reviewed.API is not undertaking to meet the duties of employers,manufacturers,or suppliers tow
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4、overed by letters patent.Neither should anything contained in the publication beconstrued as insuring anyone against liability for infringement of letters patent.Generally,API standards are reviewed and revised,reaffirmed,or withdrawn at leastevery five years.Sometimes a one-time extension of up to
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9、adeby the Institute to assure the accuracy and reliability of the data contained in them;how-ever,the Institute makes no representation,warranty or guarantee in connection with thispublication and hereby expressly disclaims any liability or responsibility for loss or dam-age resulting from its use o
10、r for the violation of any federal,state,or municipal regulationwith which this publication may conflict.API standards are published to facilitate the broad availability of proven,sound engi-neering and operating practices.These standards are not intended to obviate the need forapplying sound engine
11、ering judgment regarding when and where these standards shouldbe utilized.The formulation and publication of API standards is not intended in any way toinhibit anyone from using any other practices.Any manufacturer marking equipment or materials in conformance with the markingrequirements of an API
12、standard is solely responsible for complying with all the applica-ble requirements of that standard.API does not represent,warrant,or guarantee that suchproducts do in fact conform to the applicable API standard.All rights reserved.No part of this work may be reproduced,stored in a retrieval system,
13、or transmitted by any means,electronic,mechanical,photocopying,recording or other-wise,without prior written permission from the publisher.Contact the Publisher,API Publishing Services,1220 L Street,N.W.,Washington,D.C.20005.Copyright1996 American Petroleum InstituteCOPYRIGHT 2002:American Petroleum
14、 InstituteAPI RP*16329b07322900553015267CONTENTSPageSECTION 1一GENERAL1.1 Scope.1.2 Referenced Publications.SECTION 2-CORROSION OF BURIED STEEL STRUCTURES2.1 Introduction.2.2Corrosion Processes.2.3C0T0Si0nC0ntr0l2SECTION 3-SACRIFICIAL ANODE PROTECTION3.1 Descripti0n3.2 Factory-Installed Anodes.13.3 F
15、ield-Installed Anodes.3.4Anode Types and Placement63.5Electrical Connections and Isolation.83.6 Evaluating Corrosion Protection.8SECTION 4-IMPRESSED-CURRENT PROTECTION4.】Descripti0n94.2 Rectifier Selection and Operation.94.3Anode Installation and Connections.104.4 Evaluating Corrosion Protection.10F
16、igures1-Electrochemical Corrosion Cell.22-Corrosion Caused by Differences in Oxygen and Moisture Content of Soils.33-Corrosion Caused by Dissimilar Soils.4Stray Current Corrosion.5-Bimetallic CorroSion56-Sacrificial Anode Cathodic Protection57-Impressed-Current Cathodic Protection.6Table1-Practical Galvanic Series.6COPYRIGHT 2002:American Petroleum Institute822829S26656cacar1a060e6aeament Policy Management Group at 1-800-451-1584.
