1、Designation: C 625 95 (Reapproved 2005)An American National StandardStandard Practice forReporting Irradiation Results on Graphite1This standard is issued under the fixed designation C 625; the number immediately following the designation indicates the year oforiginal adoption or, in the case of rev
2、ision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers information recommended for in-clusion in reports giving graphite irradiation
3、 results.2. Referenced Documents2.1 ASTM Standards:2E 261 Practice for Determining Neutron Fluence, FluenceRate, and Spectra by Radioactivation TechniquesE 525 Practice for Reporting Dosimetry Results on NuclearGraphite33. Significance and Use3.1 The purpose of this practice is to identify sample an
4、dtest parameters that may influence graphite irradiation testresults. This practice should not be construed as a requirementor recommendation that proprietary information be disclosed.3.2 Irradiation results on graphite include dimensionalchanges and changes in properties that are used in reactordes
5、ign. The irradiation data are reported in government docu-ments, open literature publications, and are assembled into datamanuals for use by reactor designers.4. Sample Description4.1 Source,4.2 Grade or identifying sample number,4.3 Raw materials including filler, binder, additives, impreg-nants an
6、d their pretreatment, if not proprietary information,4.4 Forming process including the size and shape of parentstock, if not proprietary information,4.5 Heat treatment including graphitizing temperature, rateof heating and soak time, if not proprietary information.4.6 Purification, if not proprietar
7、y information,4.7 Sampling plan including location in parent stock, grainorientation, size, and shape of samples, and4.8 Pre-irradiation sample treatment including prestressing,annealing, or previous irradiation.5. Property Measurements5.1 MethodIndicate the method and accuracy of measure-ment and,
8、if applicable, differences between pre- and post-irradiation measurements.5.2 ResultsSpecify the number of samples represented orthe number of measurements per sample if mean values aregiven.5.3 Indicate other measurements taken but not reported.6. Irradiation Conditions6.1 Reactor and test position
9、s.6.2 Design of capsule, including materials of construction.6.3 Atmosphere to which samples were exposed.6.4 Thermal history including method of measurement orcalculation.6.5 Sample ConstraintIf applicable, indicate the type,magnitude and method of determining stress applied duringirradiation.6.6 D
10、osimetryRefer to Practices E 261 and E 525.6.7 Neutron FluenceNeutron spectrum and energy cut offutilized for neutron fluence calculation.6.8 Sample RecoveryReport the methods of recovery andtransfer, and the time between discharge and post-irradiationmeasurement of properties.7. Keywords7.1 graphit
11、e; irradiated properties; test results1This practice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts and Lubricants and is the direct responsibility of Subcommittee D02.F0 onManufactured Carbon and Graphite Products.Current edition approved June 1, 2005. Published August 2005. O
12、riginallyapproved in 1968. Last previous edition approved in 2000 as C 62595(2000).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 pa
13、ge onthe ASTM website.3Withdrawn.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users
14、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 fi
15、ve years andif not 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
16、committee, which you 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 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).C 625 95 (2005)2
