1、Designation: D3912 10Standard 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 of revision, the
2、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 coatings and linings
3、 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 (Typically 5 days): Such
4、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 regardedas standard.
5、 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 user of this standar
6、d to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D714 Test Method for Evaluating Degree of Blistering ofPaintsD1193 Specification for Reagent WaterD5139 Specification for Sample
7、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 Standard:NACE Standard TM-01-742002 Laboratory Methods forth
8、e 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 of tanks, vessels and similar facilities used inCoating Se
9、rvice 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 chemical resistance tests described in 6.1are dependent upo
10、n 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 coatings and linings for applications inother types of power
11、 plants or other industrial services.4. 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 SpecificationD5139.5.2 Concrete
12、 BlocksPrepare blocks in accordance withSpecification D5139 with the exception that the top and bottomends of the block shall be coated.1This test method is under the jurisdiction of ASTM Committee D33 onProtective Coating and Lining Work for Power Generation Facilities and is the directresponsibili
13、ty of Subcommittee D33.02 on Service and Material Parameters.Current edition approved May 15, 2010. Published June 2010. Originallyapproved in 1980. Last previous edition approved in 2001 as D3912 95 (2001)which was withdrawn January 2010 and reinstated in May 2010. DOI: 10.1520/D3912-10.2For refere
14、nced 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.3Available from NACE International (NACE), 1440 South Creek Dr., Houston
15、,TX 77084-4906, http:/www.nace.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. Procedure6.1 Short Term Tests:6.1.1 Test the chemical resistance properties of the coatingsby immersion in the appropriate test solutions for durat
16、ion 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.NOTE 1A
17、ny 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) isantici
18、pated 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 180 day
19、s.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 condition
20、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, discolora-tion of coating or test solution, softening, any other i
21、ndicationsof 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 the first
22、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 Method D714),
23、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 testspecimen prepara
24、tion, such as sample substrate, surface prepa-ration, coating system, batch numbers, application method, dryfilm thickness, and environmental conditions during samplepreparation and curing.9. Precision and Bias9.1 These tests are qualitative in nature. Precision and biasare not definable.10. Keyword
25、s10.1 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 standard ar
26、e 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 andif not
27、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, which yo
28、u 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 19428-2959,United
29、 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 ASTM website (www.astm.org/COPYRIGHT/).D3912 102
