1、Designation:C62515An American National StandardStandard Practice forReporting Irradiation Results on Graphite1This standard is issued under the fixed designation C625;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last r
2、evision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This practice covers information recommended for in-clusion in reports giving graphite irradiation results.2.Referenced Document
3、s2.1 ASTM Standards:2E261 Practice for Determining Neutron Fluence,FluenceRate,and Spectra by Radioactivation TechniquesE525 Practice for Reporting Dosimetry Results on NuclearGraphite(Discontinued 2001)(Withdrawn 2001)33.Terminology3.1 Definitions:3.1.1 grade,ndesignation given a material by a manu
4、fac-turer such that it is always reproduced to the same specifica-tions established by the manufacturer.4.Significance and Use4.1 The purpose of this practice is to identify sample andtest parameters that may influence graphite irradiation testresults.This practice should not be construed as a requi
5、rementor recommendation that proprietary information be disclosed.4.2 Irradiation results on graphite include dimensionalchanges and changes in properties that are used in reactordesign.The irradiation data are reported in governmentdocuments,open literature publications,and are assembled intodata m
6、anuals for use by reactor designers.5.Sample Description5.1 Source,5.2 Grade or identifying sample number,5.3 Raw materials including filler,binder,additives,impreg-nants and their pretreatment,if not proprietary information,5.4 Forming process including the size and shape of parentstock,if not prop
7、rietary information,5.5 Heat treatment including graphitizing temperature,rateof heating and soak time,if not proprietary information.5.6 Purification,if not proprietary information,5.7 Sampling plan including location in parent stock,grainorientation,size,and shape of samples,and5.8 Pre-irradiation
8、 sample treatment including prestressing,annealing,or previous irradiation.6.Property Measurements6.1 MethodIndicate the method and accuracy of measure-ment and,if applicable,differences between pre-and post-irradiation measurements.Where applicable,give reference tostandards or guides that prescrib
9、e(or describe)the methodused.6.2 ResultsSpecify the number of samples represented orthe number of measurements per sample if mean values aregiven.6.3 Indicate other measurements taken but not reported.7.Irradiation Conditions7.1 Reactor and test positions.7.2 Design of capsule,including materials of
10、 construction.7.3 Atmosphere to which samples were exposed.7.4 Thermal history including method of measurement orcalculation.7.5 Sample ConstraintIf applicable,indicate the type,magnitude and method of determining stress applied duringirradiation.7.6 DosimetryRefer to Practices E261 and E525.7.7 Neu
11、tron FluenceNeutron spectrum and energy cut offutilized for neutron fluence calculation.7.8 Sample RecoveryReport the methods of recovery andtransfer,and the time between discharge and post-irradiationmeasurement of properties.1This practice is under the jurisdiction of ASTM Committee D02 on Petrole
12、umProducts,Liquid Fuels,and Lubricants and is the direct responsibility of Subcom-mittee D02.F0 on Manufactured Carbon and Graphite Products.Current edition approved Oct.1,2015.Published November 2015.Originallyapproved in 1968.Last previous edition approved in 2010 as C625 95(2010).DOI:10.1520/C062
13、5-15.2For 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 Summary page onthe ASTM website.3The last approved version of this historical standard is ref
14、erenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 8.Keywords8.1 graphite;irradiated properties;test resultsSUMMARY OF CHANGESSubcommittee D02.F0 has ide
15、ntified the location of selected changes to this standard since the last issue(C625 95(2010)that may impact the use of this standard.(Approved Oct.1,2015.)(1)Added new Section 3,Terminology.(2)Revised subsection 6.1.ASTM International takes no position respecting the validity of any patent rights as
16、serted in connection with any item mentionedin this standard.Users of this standard 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 andif not revised,either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additio
