1、Cathodic Protection of Aboveground Petroleum Storage TanksAPI RECOMMENDED PRACTICE 651 FOURTH EDITION,SEPTEMBER 2014Special NotesAPI publications necessarily address problems of a general nature.With respect to particular circumstances,local,state,and federal laws and regulations should be reviewed.
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14、 reviewed and revised,reaffirmed,or withdrawn at least every five years.A one-time extension of up to two years may be added to this review cycle.Status of the publication can be ascertained from the API Standards Department,telephone(202)682-8000.A catalog of API publications and materials is publi
15、shed annually by API,1220 L Street,NW,Washington,DC 20005.Suggested revisions are invited and should be submitted to the Standards Department,API,1220 L Street,NW,Washington,DC 20005,standardsapi.org.iiiContentsPage1Scope.12Normative References.12.1Standards,Codes,Publications,and Specifications.12.
16、2Other References.33Terms and Definitions.34Corrosion of Aboveground Steel Storage Tanks.84.1Introduction.84.2Corrosion Mechanisms.94.3Internal Corrosion.115Determination of Need for Cathodic Protection.115.1Introduction.115.2Tank History.125.3Tank Pad and Soil Conditions.145.4Other Factors Affecting Cathodic Protection.186Methods of Cathodic Protection for Corrosion Control.196.1Introduction.196.2Galvanic Systems.196.3Impressed Current Systems.217Design of Cathodic Protection Systems.237.1Intro
