ASTM_C_1663_-_18.pdf

Designation:C166318Standard Test Method forMeasuring Waste Glass or Glass Ceramic Durability byVapor Hydration Test1This standard is issued under the fixed designation C1663;the number immediately following the designation indicates the year oforiginal adoption or,in the case 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 The vapor hydration test method can be used to studythe corrosion of a waste forms such as glasses and glassceramics2upon exposure to water vapor at elevated tempera-tures.In addition,the alteration phases that form can be used asindicators of those phases that may form under repositoryconditions.These tests;which allow altering of glass at highsurface area to solution volume ratio;provide useful informa-tion regarding the alteration phases that are formed,thedisposition of radioactive and hazardous components,and thealteration kinetics under the specific test conditions.Thisinformation may be used in performance assessment(McGrailet al,2002(1)3for example).1.2 This test method must be performed in accordance withall quality assurance requirements for acceptance of the data.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 prior 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 TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:4C162 Terminology of Glass and Glass ProductsC859 Terminology Relating to Nuclear MaterialsD1125 Test Methods for Electrical Conductivity and Resis-tivity of WaterD1193 Specification for Reagent WaterD1293 Test Methods for pH of WaterE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 Please refer to Terminologies C162 and C859 foradditional terminology which may not be listed below.3.2 Definitions:3.2.1 immobilized low-activity wastevitrified low-activityfraction of waste presently contained in Hanford Site tanks.3.2.2 performance assessmentexamines the long-term en-vironmental and human health effects associated with theplanned disposal of waste.Mann et al,2001(2)3.2.3 sampleinitial test material with known composition.3.2.4 specimenspecimen is a part of the sample used fortesting.3.2.5 traceable standarda material that supplies a link toknown test response in standards international units by anational or international standards body,for example,NIST.3.3 Abbreviations:3.3.1 DIWASTM Type I deionized water3.3.2 EDSenergy dispersive X-ray spectroscopy1This test method is under the jurisdiction ofASTM Committee C26 on NuclearFuel Cycle and is the direct responsibility of Subcommittee C26.13 on Spent Fueland High Level Waste.Current edition approved Nov.1,2018.Published January 2019.Originallyapproved in 2009.Last previous edition approved in 2017 as C1663 17.DOI:10.1520/C1663-18.2The precision and bias statements are only valid for glass waste forms at thistime.The test may be(and has been)performed on other waste forms;however,theprecision of such tests are currently unknown.3The boldface numbers in parentheses refer to the list of references at the end ofthis standard.4For 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.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 theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.3.3 OMoptical microscopy3.3.4 OM/IAoptical microscope connected to an imageanalysis system3.3.5 PTFEpolytetrafluoroethylene(chemical compoundcommonly referred to as Teflon)3.3.6 SEMscanning electron microscope3.3.7 SiC papersilicon-carbide paper3.3.8 TBDto be determined3.3.9 TEMtransmission electron microscope3.3.10 Tgglass transition temperature3.3.11 VHTvapor hydration test3.3.12 WDSwave-length dispersive spectroscopy3.3.13 XRDX-ray diffraction3.3.14%RSDpercent relative standard deviation4.Summary of Test Method4.1 For the vapor hydration tests,glass or glass ceramicspecimens(refe