1、Designation:D408210(Reapproved 2017)Standard Test Method forEffects of Gamma Radiation on Coatings for Use in NuclearPower Plants1This standard is issued under the fixed designation D4082;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revisi
2、on,the year of last 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 test method covers a standard procedure for evalu-ating the lifetime radiation tolerance of coatings to
3、 be used innuclear power plants.This test method is applicable to CoatingService Levels I,II,and III.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not consi
4、dered standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated 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 pr
5、ior to use.1.4 This international standard was developed in accor-dance with internationally recognized 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 TechnicalB
6、arriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D659 Method for Evaluating Degree of Chalking of ExteriorPaints(Withdrawn 1990)3D660 Test Method for Evaluating Degree of Checking ofExterior PaintsD661 Test Method for Evaluating Degree of Cracking ofExterior PaintsD714 Test M
7、ethod for Evaluating Degree of Blistering ofPaintsD772 Test Method for Evaluating Degree of Flaking(Scal-ing)of Exterior PaintsD4538 Terminology Relating to Protective Coating andLining Work for Power Generation FacilitiesD5139 Specification for Sample Preparation for Qualifica-tion Testing of Coati
8、ngs to be Used in Nuclear PowerPlants3.Terminology3.1 DefinitionsDefinitions for use with this Test Methodare shown in Terminology D4538 or other referenced stan-dards.4.Significance and Use4.1 This test method is designed to provide a uniform test toassess the suitability of coatings,used in nuclea
9、r powerfacilities,under radiation exposure for the life of the facilities,including radiation during a DBA(Coating Service Level Iareas only).Specific plant radiation exposure may exceed or beless than the amount specified in 7.2 of this standard.Ifrequired by the licensee design basis,the gamma dos
10、e usedmay exceed the actual anticipated plant gamma dose to accountfor beta dose.Coatings in Level II and III areas(outsideprimary containment)are expected to be exposed to loweraccumulated radiation doses.5.Preparation of Test Samples5.1 Steel PanelsPanels shall be prepared in accordancewith Specif
11、ication D5139 or as approved by the licensee.5.2 Concrete BlocksBlocks shall be prepared in accor-dance with Specification D5139 or as approved by the licensee.6.Sampling6.1 Prepare and test specimens at least in duplicate,or asotherwise specified by the licensee.7.Procedures7.1 Irradiation Dose Rat
12、e:7.1.1 Make the gamma energy field at the position of the testspecimen 1 106rads/h,or greater,unless otherwise specifiedby the licensee.It shall be uniform to within 10%from oneposition of the specimen to another.1This test method is under the jurisdiction of ASTM Committee D33 onProtective Coating
13、 and Lining Work for Power Generation Facilities and is the directresponsibility of Subcommittee D33.02 on Service and Material Parameters.Current edition approved Sept.1,2017.Published September 2017.Originallyapproved in 1983.Last previous edition approved in 2010 as D4082 10.DOI:10.1520/D4082-10R
14、17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is refer
15、enced onwww.astm.org.Copyright ASTM International,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 theDeve
16、lopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 7.1.2 Make provisions so that all areas receive the sameaverage exposure and dose,if the specimen is irradiated by anonuniform source.7.1.3 Determine the dose rate by a procedure acceptable tothe coating manufacturer or as otherwise specified by thelicensee.7.2 Irradiation Accumulated DoseMake the total irradia-tion accumulated dose 1 109rads,unless oth
