1、Designation:C155316Standard Guide forDrying Behavior of Spent Nuclear Fuel1This standard is issued under the fixed designation C1553;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 in
2、dicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide discusses three steps in preparing spentnuclear fuel(SNF)for placement in a sealed dry storagesystem:(1)evaluating the needs for drying the SNF afterrem
3、oval from a water storage pool and prior to placement indry storage,(2)drying the SNF,and(3)demonstrating thatadequate dryness has been achieved.1.1.1 The guide addresses drying methods and their limita-tions when applied to the drying of SNF that has been stored inwater pools.The guide discusses so
4、urces and forms of waterthat may remain in the SNF,the container,or both after thedrying process has been completed.It also discusses theimportant and potential effects of the drying process and anyresidual water on fuel integrity and container materials duringthe dry storage period.The effects of r
5、esidual water arediscussed mechanistically as a function of the container ther-mal and radiological environment to provide guidance onsituations that may require extraordinary drying methods,specialized handling,or other treatments.1.1.2 The basic issues in drying are:(1)to determine howdry the SNF
6、must be in order to prevent problems with fuelretrievability,container pressurization,or container corrosionduring storage,handling,and transfer,and(2)to demonstratethat adequate dryness has been achieved.Achieving adequatedryness may be straightforward for undamaged commercialfuel but complex for a
7、ny SNF where cladding damage hasoccurred prior to or during placement and storage at the spentfuel pools.Challenges in achieving adequate dryness may alsoresult from the presence of sludge,CRUD,and any otherhydrated compounds.These may be transferred with the SNFto the storage container and may hold
8、 water and resist drying.1.1.3 Units are given in both SI and non-SI units as isindustry standard.In some cases,mathematical equivalents aregiven in parentheses.1.2 This standard only discusses SNF drying and does notpurport to address all of the handling and safety concerns,ifany,associated with th
9、e drying process(es).It is the responsi-bility of the user of this standard to establish appropriate safetyand health practices and to meet regulatory requirements priorto and during use of the standard.2.Referenced Documents2.1 ASTM Standards:2C859 Terminology Relating to Nuclear MaterialsC1174 Pra
10、ctice for Prediction of the Long-Term Behavior ofMaterials,Including Waste Forms,Used in EngineeredBarrier Systems(EBS)for Geological Disposal of High-Level Radioactive WasteC1562 Guide for Evaluation of Materials Used in ExtendedService of Interim Spent Nuclear Fuel Dry Storage Sys-tems2.2 ANSI/ANS
11、 Standards:3ANSI/ANS 8.1-1998 Nuclear Criticality Safety in Opera-tions with Fissionable Materials Outside ReactorsANSI/ANS-8.7-1998 Nuclear Criticality Safety in the Stor-age of Fissile MaterialsANSI/ANS-57.9 American National Standard Design Crite-ria for Independent Spent Fuel Storage Installatio
12、n(DryType)2.3 Government Documents:4The U.S.government docu-ments listed in 2.3 or referenced in this standard guide areincluded as examples of local regulations and regulatoryguidance that,depending on the location of the dry storage site,may be applicable.Users of this standard should adhere to th
13、eapplicable regulatory documents and regulations and shouldconsider applicable regulatory guidance.Title 10 on Energy,Code of Federal Regulations,Part 60,10CFR 60,U.S.Code of Federal Regulations,Disposal ofHigh Level radioactive Wastes in Geologic RepositoriesTitle 10 on Energy,Code of Federal Regul
14、ations,Part 63,10CFR 63,U.S.Code of Federal Regulations,Disposal of1This guide is under the jurisdiction of ASTM Committee C26 on Nuclear FuelCycle and is the direct responsibility of Subcommittee C26.13 on Spent Fuel andHigh Level Waste.Current edition approved July 1,2016.Published November 2016.O
15、riginallyapproved in 2008.Last previous edition approved in 2008 as C1553 08.DOI:10.1520/C1553-16.2For 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
16、Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.4The Code of Federal Regulations is available at https:/www.gpo.gov/fdsys/browse/collectionCfr.action?collectionCode=CFR.SFST-ISG-1 is available athttp:/www.nrc.gov/reading-rm/doc-collections/isg/spent-fuel.html.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 High-Level Radioactive Wa
