ISO ASTM 51900-2009 Guide for dosimetry in radiation research on food and agricultural products《食物和农产品辐照研究的剂量测定指南》.pdf
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1、Guide for dosimetry in radiation research on food and agricultural products Guide de la dosimtrie pour la recherche dans le domaine de lirradiation des produits alimentaires et agricoles INTERNATIONAL ISO/ASTM STANDARD 51900 Second edition 2009-06-15 Reference number ISO/ASTM 51900:2009(E) ISO/ASTM
2、International 2009PDF disclaimer ThisPDFlemaycontainembeddedtypefaces.InaccordancewithAdobeslicensingpolicy,thislemaybeprintedorviewedbutshall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this le, parties a
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4、he General Info relative to the le; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the le is suitable for use by ISO member bodies and ASTM members. In the unlikely event that a problem relating to it is found, please inform the ISO Central Secretar
5、iat or ASTM International at the addresses given below. ISO/ASTM International 2009 Allrightsreserved.Unlessotherwisespecied,nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical, including photocopying and microlm, without permission in writing from either ISO
6、 at the address below or ISOs member body in the country of the requester. In the United States, such requests should be sent to ASTM International. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. +41 22 749 01 11 Fax +41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org ASTM Internat
7、ional, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, USA Tel. +610 832 9634 Fax +610 832 9635 E-mail khooperastm.org Web www.astm.org Published in the United States ISO/ASTM51900:2009(E) ii ISO/ASTM International 2009 All rights reservedContents Page 1 Scope . 1 2 Referenced
8、documents . 1 3 Terminology 2 4 Signicance and use . 3 5 Irradiation facilities and modes of operation 3 6 Radiation source characteristics 4 7 Dosimetry systems 5 8 Performance qualication 7 9 Experimental methodology and dose mapping 7 10 Dosimetry during experimentation 9 11 Documentation 10 12 M
9、easurement uncertainty 10 13 Keywords 11 ANNEX . 11 Bibliography . 11 Figure 1 Dosimeter placement for dose mapping a product container for photon irradiation 8 Figure 2 Experimental set-up for the irradiation of ground meat . 9 Figure 3 Step width selection of target dose . 9 Table 1 Examples of ro
10、utine dosimeters (see ISO/ASTM Guide 51261) . 5 ISO/ASTMFDIS 51900:2009(E) iii ISO/ASTM International 2009 All rights reservedForeword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies (ISO member bodies). The work of preparing International Standards
11、 is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take p
12、art in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Sta
13、ndard requires approval by at least 75% of the member bodies casting a vote. ASTM International is one of the worlds largest voluntary standards development organizations with global participation from affected stakeholders. ASTM technical committees follow rigorous due process balloting procedures.
14、 A project between ISO and ASTM International has been formed to develop and maintain a group of ISO/ASTM radiation processing dosimetry standards. Under this project, ASTM Subcommittee E10.01, Radiation Processing: Dosimetry and Applications, is responsible for the development and maintenance of th
15、ese dosimetry standards with unrestricted participation and input from appropriate ISO member bodies. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. Neither ISO nor ASTM International shall be held responsible for identifying any
16、 or all such patent rights. International Standard ISO/ASTM 51900 was developed by ASTM Committee E10, Nuclear Technology and Applications, through Subcommittee E10.01, and by Technical Committee ISO/TC 85, Nuclear energy. Thissecondeditioncancelsandreplacestherstedition(ISO/ASTM51900:2002),whichhas
17、beentechnically revised. ISO/ASTM51900:2009(E) iv ISO/ASTM International 2009 All rights reservedISO/ASTM51900:2009(E) Standard Guide for Dosimetry in Radiation Research on Food and Agricultural Products 1 This standard is issued under the xed designation ISO/ASTM 51900; the number immediately follo
18、wing the designation indicates the year of original adoption or, in the case of revision, the year of last revision. 1. Scope 1.1 Thisguidecoverstheminimumrequirementsfordosim- etry needed to conduct research on the effect of radiation on food and agricultural products. Such research includes estab-
19、 lishment of the quantitative relationship between absorbed dose and the relevant effects in these products. This guide also describes the overall need for dosimetry in such research, and in reporting of the results. Dosimetry must be considered as an integral part of the experiment. NOTE 1The Codex
20、 Alimentarius Commission has developed an international General Standard and a Code of Practice that address the applicationofionizingradiationtothetreatmentoffoodsandthatstrongly emphasize the role of dosimetry for ensuring that irradiation will be properly performed (1). 2 NOTE 2This guide include
21、s tutorial information in the form of Notes. Researchers should also refer to the references provided at the end of the standard, and other applicable scientic literature, to assist in the experimental methodology as applied to dosimetry (2-10). 1.2 This guide covers research conducted using the fol
22、low- ing types of ionizing radiation: gamma radiation, X-ray (bremsstrahlung), and electron beams. 1.3 This guide describes dosimetry requirements for estab- lishingtheexperimentalmethodandforroutineexperiments.It does not include dosimetry requirements for installation quali- cation or operational
23、qualication of the irradiation facility. These subjects are treated in ISO/ASTM Practices 51204, 51431, 51608, 51649, and 51702. 1.4 This guide is not intended to limit the exibility of the experimenter in the determination of the experimental meth- odology.Thepurposeoftheguideistoensurethattheradia
24、tion source and experimental methodology are chosen such that the results of the experiment will be useful and understandable to other scientists and regulatory agencies. 1.5 The overall uncertainty in the absorbed-dose measure- ment and the inherent absorbed-dose variation within the irradiatedsamp
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