1、Designation:C131608(Reapproved 2017)Standard Test Method forNondestructive Assay of Nuclear Material in Scrap andWaste by Passive-Active Neutron Counting Using252CfShuffler1This standard is issued under the fixed designation C1316;the number immediately following the designation indicates the year o
2、foriginal 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 This test method covers the nondestructive assay ofscrap and wast
3、e items for U,Pu,or both,using a252Cf shuffler.Shuffler measurements have been applied to a variety of matrixmaterials in containers of up to several 100 L.Corrections aremade for the effects of matrix material.Applications of this testmethod include measurements for safeguards,accountability,TRU,an
4、d U waste segregation,disposal,and process controlpurposes(1,2,3).21.1.1 This test method uses passive neutron coincidencecounting(4)to measure the240Pu-effective mass.It has beenused to assay items with total Pu contents between 0.03 g and1000 g.It could be used to measure other spontaneouslyfissio
5、ning isotopes such as Cm and Cf.It specifically describesthe approach used with shift register electronics;however,itcan be adapted to other electronics.1.1.2 This test method uses neutron irradiation with amoveable Cf source and counting of the delayed neutrons fromthe induced fissions to measure t
6、he235U equivalent fissilemass.It has been used to assay items with235U contentsbetween 0.1 g and 1000 g.It could be used to assay other fissileand fissionable isotopes.1.2 This test method requires knowledge of the relativeisotopic composition(See Test Method C1030)of the specialnuclear material to
7、determine the mass of the different elementsfrom the measurable quantities.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 The techniques described in this test method have beenapplied to materials other than scrap and wa
8、ste.These otherapplications are not addressed in this test method.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 standard to establish appro-priate safety and health practices and determine the applic
9、a-bility of regulatory limitations prior to use.Specific precau-tionary statements are given in Section 8.2.Referenced Documents2.1 ASTM Standards:3C1009 Guide for Establishing and Maintaining a QualityAssurance Program forAnalytical Laboratories Within theNuclear IndustryC1030 Test Method for Deter
10、mination of Plutonium IsotopicComposition by Gamma-Ray SpectrometryC1068 Guide for Qualification of Measurement Methods bya Laboratory Within the Nuclear IndustryC1128 Guide for Preparation of Working Reference Materi-als for Use in Analysis of Nuclear Fuel Cycle MaterialsC1133 Test Method for Nonde
11、structive Assay of SpecialNuclear Material in Low-Density Scrap and Waste bySegmented Passive Gamma-Ray ScanningC1156 Guide for Establishing Calibration for a Measure-ment Method Used to Analyze Nuclear Fuel Cycle Mate-rialsC1207 Test Method for Nondestructive Assay of Plutoniumin Scrap and Waste by
12、 Passive Neutron CoincidenceCountingC1210 Guide for Establishing a Measurement System Qual-ity Control Program for Analytical Chemistry Laborato-ries Within the Nuclear IndustryC1215 Guide for Preparing and Interpreting Precision andBias Statements in Test Method Standards Used in theNuclear Industr
13、yC1490 Guide for the Selection,Training and Qualification ofNondestructive Assay(NDA)PersonnelC1592 Guide for Nondestructive Assay Measurements1This test method is under the jurisdiction ofASTM Committee C26 on NuclearFuel Cycle and is the direct responsibility of Subcommittee C26.10 on NonDestructi
14、ve Assay.Current edition approved Jan.1,2017.Published January 2017.Originallyapproved in 1995.Last previous edition approved in 2008 as C1316 08.DOI:10.1520/C1316-08R17.2The boldface numbers in parentheses refer to a list of references at the end ofthis test method.3For referenced ASTM standards,vi
15、sit 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.Unit
16、ed 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 C1673 Terminology of C26.10 Nondestructive Assay Meth-ods2.2 ANSI Documents:ANSI 15.20 Guide to Calibrating Nondestructive AssaySystems4ANSI N15.36 Nondestructive Assay Measur
