1、STP 1370 Designing Cathodic Protection stems for Marine Structures and Vehicles Harvey P.Hack,editor ASTM Stock Number:STP1370 ASTM 100 Barr Harbor Drive West Conshohocken,PA 19428-2959 Printed in the U.S.A.Library of Congress Cataloging-in-Publication Data Designing cathodic protection systems for
2、marine structures and vehicles/Harvey P.Hack,editor.p.cm.-(STP;1370)ASTM stock#:STP1370.Includes bibliographical references.ISBN 0-8031-2623-9 1.Corrosion and anti-corrosives.2.Seawater corrosion.3.Ships-Cathodic protection.4.Offshore structures-Protection.I.Hack,Harvey P.I1.Series.II1.ASTM special
3、technical publication;1370.TA462.D47 1999 620.11223-dc21 99-051443 Copyright?9 1999 AMERICAN SOCIETY FOR TESTING AND MATERIALS,West Conshohocken,PA.All rights reserved.This material may not be reproduced or copied,in whole or in part,in any printed,mechanical,electronic,film,or other distribution an
4、d storage media,without the written consent of the publisher.Photocopy Rights Authorization to photocopy items for internal,personal,or educational classroom use,or the internal,personal,or educational classroom use of specific clients,is granted by the American Society for Testing and Materials(AST
5、M)provided that the appropriate fee is paid to the Copyright Clearance Center,222 Rosewood Drive,Danvers,MA 01923,Tel:508-750-8400;online:http:/ Review Policy Each paper published in this volume was evaluated by two peer reviewers and at least one editor.The authors addressed all of the reviewers co
6、mments to the satisfaction of both the technical editor(s)and the ASTM Committee on Publications.To make technical information available as quickly as possible,the peer-reviewed papers in this publication were prepared camera-ready as submitted by the authors.The quality of the papers in this public
7、ation reflects not only the obvious efforts of the authors and the technical editor(s),but also the work of these peer reviewers.In keeping with long standing publication practices,ASTM maintains the anonymity of the peer reviewers.The ASTM Committee on Publications acknowledges with appreciation th
8、eir dedication and contribution to time and effort on behalf of ASTM Printed in Baltimore,MD November 1999 Foreword The Symposium on Designing Cathodic Protection Systems for Marine Structures and Systems was held 3 Nov.1998 in Norfolk,Virginia.Committee G1 on Corrosion of Metals sponsored the sympo
9、sium.Harvey P.Hack,Northrop Grumman Corporation,presided as symposium chairman and is editor of this publication.Contents Overview vii The Slope Parameter Approach to Marine Cathodic Protection Design and Its Application to Impressed Current Systems-w.H.HARTT 1 Design of Impressed Current Cathodic P
10、rotection(ICCP)Systems for U.S.Navy Hulls-K.E.LUCAS,E.D.THOMAS,A.I.KAZNOFF,AND E.A.HOGAN 17 Relationship of Chemical Components and Impurities of Aluminum Galvanic Anodes Upon the Cathodic Protection of Marine Structures-c.F.SCHRIEBER 39 Cathodic Protection System Design for Steel Pilings of a Wharf
11、 Structure-s.NmOLAKAKOS 52 Cathodic Protection Requirements for Deepwater Systems-c.M.MENENDEZ,H.R.HANSON,R.D.KANE,AND G.B.FARQUHAR 71 Computational Design of ICCP Systems:Lessons Learned and Future Directions-V.G.DeGIORGI AND K.E.LUCAS 87 Cathodic Protection Deployment on Space Shuttle Solid Rocket
12、 Boosters-L.M.ZOOK 101 Overview Cathodic protection is an important method of protecting structures and ships from the corrosive effects of seawater.Design of cathodic protection systems can significantly effect the usable life-time of a structure.Poor designs can be far-more costly to implement tha
13、n optimal designs.Im-proper design can cause overprotection,with resulting paint blistering and accelerated corrosion of some alloys,underprotection,with resultant structure corrosion,or stray current corrosion of nearby structures.The first ASTM symposium specifically aimed at cathodic protection i
14、n seawater was held on 3 November,1998,in Norfolk,VA.This symposium intended to compile all the criteria and philosophy for designing both sacrificial and impressed current cathodic protection systems for structures and vehicles in seawater.It was not possible to comprehensively cover this topic in
15、a sin-gle day,however.The papers which are included in this STP are significant in that they summarize the major seawater cathodic protection system design philosophies.The first paper,by Hartt,is a summary of the latest approach to determining cathodic protection current requirements for marine str
16、uctures.This approach,called the Slope Parameter Approach,allows for the formation of calcareous deposits in a more accurate fashion than the older,tradi-tional,methods,and has recently been used as the basis for development of a Standard by NACE International.The U.S.Navy has probably designed more cathodic protection systems for ships than any other organization.In recent years,the Navy has begun to use physical scale modeling to optimally place reference cells and anodes,and to select the bes
