1、Designation:D506517(Reapproved 2021)Standard Guide forAssessing the Condition of Aged Coatings on SteelSurfaces1This standard is issued under the fixed designation D5065;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of las
2、t revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide describes general procedures for conductinga detailed assessment of the condition of aged coatings on steelstructur
3、es and the extent of rust breakthrough of the coatedsurface.Additional assessment may be required to supportcoating failure analyses or other job-specific needs.1.2 This guide does not address determining the structuralcondition of a steel substrate.It provides procedures todetermine the percent of
4、the surface rusted,but not the severity,condition,or cause of such rusting.NOTE1A more comprehensive condition assessment procedure,Practice F1130,has been developed for determining the condition ofcoatings on a ship.1.3 This standard does not purport to address all of thesafety concerns,if any,asso
5、ciated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recog
6、nized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D610 Practice for Evaluat
7、ing Degree of Rusting on PaintedSteel SurfacesD660 Test Method for Evaluating Degree of Checking ofExterior PaintsD714 Test Method for Evaluating Degree of Blistering ofPaintsD3359 Test Methods for Rating Adhesion by Tape TestD4214 Test Methods for Evaluating the Degree of Chalkingof Exterior Paint
8、FilmsD4541 Test Method for Pull-Off Strength of Coatings UsingPortable Adhesion TestersD5702 Practice for Field Sampling of Coating Films forAnalysis for Heavy MetalsD6206 Practice for Sampling of Coating FilmsD6677 Test Method for Evaluating Adhesion by KnifeD7091 Practice for Nondestructive Measur
9、ement of DryFilm Thickness of Nonmagnetic Coatings Applied toFerrous Metals and Nonmagnetic,Nonconductive Coat-ings Applied to Non-Ferrous MetalsF1130 Practice for Inspecting the Coating System of a Ship2.2 Society for Protective Coatings:3SSPC Technology Update No.3 Overcoating3.Summary of Practice
10、3.1 This practice for assessing the condition of coatingsconsists of identifying general types of components of astructure and assessing each separately for commonly occur-ring modes of coating deterioration and substrate rusting usingvisual guides and evaluation tools.A form for recording theresult
11、s of the assessment procedure(Fig.1)is provided.4.Significance and Use4.1 Assessment of the condition of aged coated surfacesstrengthens decisions on when coating maintenance isrequired,aids in the selection of effective coating maintenanceprocedures,and provides a means to characterize performanceo
12、f coating systems.SSPC Technology Update No.3 discussesthe risks associated with selecting overcoating as a mainte-nance strategy,particularly without performing visual assess-ments and evaluating the physical properties of the existingcoating system(s)described in Section 5.5.Procedure5.1 Survey th
13、e structure to(1)determine the general typesof unique components(for example,for fuel tanks the compo-nents may be shell,roof,ladders,and piping)and the service1This guide is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings,Materials,and Applications and is the direct respon
14、sibility ofSubcommittee D01.46 on Industrial Protective Coatings.Current edition approved Nov.1,2021.Published November 2021.Originallyapproved in 1990.Last previous edition approved in 2017 as D5065 17.DOI:10.1520/D5065-17R21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcont
15、act ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from The Society for Protective Coatings(SSPC),800 TrumbullDrive,Pittsburgh,PA 15205-4365,http:/www.sspc.org.Copyright ASTM Inte
16、rnational,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1?exposure environment for each,(2)visually identify areashaving a typical level of coating deter