1、Designation: D3912 10 (Reapproved 2017)Standard Test Method forChemical Resistance of Coatings and Linings for Use inNuclear Power Plants1This standard is issued under the fixed designation D3912; the number immediately following the designation indicates the year oforiginal adoption or, in the case
2、 of revision, 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 establishes procedures for the evalua-tion of the chemical resistance of co
3、atings and linings for usein Coating Service Level I and II applications in nuclear powerplants.1.2 This test method is intended to be used as a screeningtest to evaluate coatings and linings on steel and concretesubstrates.1.3 This test method addresses two exposure intervals:(1) Short Term (Typica
4、lly 5 days): Such exposures areprimarily applicable for coatings exposed to chemical splash orspill.(2) Long Term (Typically 180 days): Such exposures areprimarily applicable for linings exposed to continuous ornear-continuous chemical immersion.1.4 The values stated in inch-pound units are to be re
5、gardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the us
6、er of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in
7、 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:2D714 Test Method for Evaluating Degree of Blistering ofPaintsD1193 Speci
8、fication for Reagent WaterD5139 Specification for Sample Preparation for Qualifica-tion Testing of Coatings to be Used in Nuclear PowerPlantsD7230 Guide for Evaluating Polymeric Lining Systems forWater Immersion in Coating Service Level III Safety-Related Applications on Metal Substrates2.2 NACE Sta
9、ndard:NACE Standard TM-01-742002 Laboratory Methods forthe Evaluation of Protective Coatings Used as LiningMaterials in Immersion Service33. Significance and Use3.1 The lining test described in 6.2 may be used to evaluatethe chemical resistance characteristics of coating systems forlining surfaces o
10、f tanks, vessels and similar facilities used inCoating Service Level I and II applications in a nuclear powerplant. For the evaluation of linings in Coating Service Level IIIwater immersion applications in nuclear power plants use thetest methods and guidance found in Guide D7230.3.2 The specific ch
11、emical resistance tests described in 6.1are dependent upon the relative severity of the service condi-tions. The specific chemical reagents to be used shall bespecified to reflect the intended service conditions.3.3 At the discretion of the user, the methods presented mayalso be used to evaluate coa
12、tings and linings for applications inother types of power plants or other industrial services.1This test method is under the jurisdiction of ASTM Committee D33 onProtective Coating and Lining Work for Power Generation Facilities and is the directresponsibility of Subcommittee D33.02 on Service and M
13、aterial Parameters.Current edition approved Sept. 1, 2017. Published September 2017. Originallyapproved in 1980. Last previous edition approved in 2010 as D3912 10. DOI:10.1520/D3912-10R17.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at servic
14、eastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from NACE International (NACE), 15835 Park Ten Pl., Houston, TX77084, http:/www.nace.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West C
15、onshohocken, 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
16、 Organization Technical Barriers to Trade (TBT) Committee.14. Sampling4.1 Prepare individual specimens for testing.4.2 Prepare one additional specimen as a control. Multipletests may be performed.5. Preparation of Test Specimens5.1 Steel Panels:5.1.1 Prepare steel panels in accordance with Specifica
17、tionD5139.5.2 Concrete BlocksPrepare blocks in accordance withSpecification D5139 with the exception that the top and bottomends of the block shall be coated.6. Procedure6.1 Short Term Tests:6.1.1 Test the chemical resistance properties of the coatingsby immersion in the appropriate test solutions f
18、or duration of 5days or as required.6.1.2 Maintain a temperature of 72 6 5F (22 6 3C) unlessthe service conditions require a higher temperature.6.1.3 Use reagent grade chemicals and distilled or deionizedwater for all solutions. Regarding the water, see SpecificationD1193 and identify the grade used
19、.NOTE 1Any grade or type described in Specification D1193 will beacceptable for use unless otherwise specified.6.2 Long Term Test:6.2.1 Test in accordance with NACE TM-01-74-2002. UseProcedure B, “Immersion Testing” except when a significanttemperature differential (that is, “Cold Wall” phenomenon)
20、isanticipated across the lining, as may be applicable for tanks. If“Cold Wall” conditions apply, use Procedure A, “One-SideTesting” or the alternative testing referenced in Section 1.5 ofNACE TM-01-74-2002.6.2.2 Immerse lining test specimens in the appropriate testsolution specified for a minimum of
21、 180 days.6.2.3 Use reagent grade chemicals and distilled or deionizedwater for all solutions. Regarding the water, see SpecificationD1193 and identify the grade used.7. Examination and Evaluation7.1 Short Term Tests:7.1.1 Examine the test specimens at the end of the testperiod.7.1.2 Evaluate the co
22、ndition of the specimens within 1 hafter removal from the test solutions.7.1.3 Evaluate the test specimens upon completion of test-ing for changes in physical properties such as delamination,blistering (Test Method D714), cracking, checking, discolor-ation of coating or test solution, softening, any
23、 other indica-tions of physical degradation, and as specified by the licensee.NOTE 2A qualitative rating scale such as “slight, moderate, extreme”can be used to report the severity of the effects if no reference to anASTMstandard exists.7.2 Long Term Test:7.2.1 Examine the test specimens weekly for
24、the first monthand then monthly thereafter.7.2.2 Inspect specimens immediately upon completion ofthe test period. Make a final inspection not later than 24 h afterremoval from the test solution.7.2.3 Evaluate the test specimens at each inspection foreffects such as delamination, blistering (Test Met
25、hod D714),discoloration, and softening.8. Documentation and Report8.1 Document the testing procedure and test results, such astest solution used, concentration, test temperature, inspectionfrequency and evaluation at each inspection.8.2 Report all procedures and conditions relating to the testspecim
26、en preparation, such as sample substrate, surfacepreparation, coating system, batch numbers, applicationmethod, dry film thickness, and environmental conditionsduring sample preparation and curing.9. Precision and Bias9.1 These tests are qualitative in nature. Precision and biasare not definable.10.
27、 Keywords10.1 chemical resistance; coatings; Coating Service Level I;Coating Service Level II; Coating Service Level III; linings;nuclearASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this sta
28、ndard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years an
29、dif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee,
30、which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-295
31、9,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 10 (2017)2
