BS ISO 8529-1-2001 Reference neutron radiations - Characteristics and methods of production《基准中子辐射 特性和生产方法》.pdf

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1、BRITISH STANDARD BS ISO 8529-1:2001 Reference neutron radiations Part 1: Characteristics and methods of production ICS 11.040.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS ISO 8529-1:2001 This British Standard, having been prepared under the direction of the Engineering

2、 Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 28 August 2001 BSI 28 August 2001 ISBN 0 580 38398 9 National foreword This British Standard reproduces verbatim BS ISO 8529-1 and implements it as the UK national standard. The

3、 UK participation in its preparation was entrusted to Technical Committee NCE/2, Health physics instrumentation, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement

4、international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to

5、 include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/

6、European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title pag

7、e pages ii to v, a blank page, pages 1 to 24, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsReference number ISO 8529-1:2001(E) INTERNATIONAL STANDARD ISO

8、 8529-1 First edition 2001-02-01 Reference neutron radiations Part 1: Characteristics and methods of production Rayonnements neutroniques de rfrence Partie 1: Caractristiques et mthodes de productionii ISO 8529-1:2001(E) ISO 1002 All rights rsedevre iii stnetnoC gaPe weroFdro.vi noitcudortnI.v 1 Sep

9、oc 1 2 Ntamroive refenersec 2 3 Ttses adn feditinisno.2 4 Rfenereec taidarsnoi for teh carbilatino fo tuen-norusaemgnir vediecs.5 5 Reference raaidtsnoi rof teh edetrmanitnoi of teh ressnope of neurtem-noasrugni devcies as a ftcnuino fo tuennor egreny9 nAnex A n(ormative) Taralub dna gcihparal rrpen

10、oitatnese fo eht nnortue tcepsar rof rcunoidaedil ecruoss .31 nAnex B (ifnromavite) Aralugn ruosec tshtgner cahetcarritsisc fo wto redilcunoida nnortue ruossec .02 nAnex C n(ormative) vnoCtneilano tmreh-lantuerno flcneue rtae .22 hpargoilbiBy32ISO 8529-1:2001(E)iii Contents Page Foreword.iv Introduc

11、tion.v 1 Scope 1 2 Normative references 2 3 Tests and definitions.2 4 Reference radiations for the calibration of neutron-measuring devices.5 5 Reference radiations for the determination of the response of neutron-measuring devices as a function of neutron energy9 Annex A (normative) Tabular and gra

12、phical representation of the neutron spectra for radionuclide sources .13 Annex B (informative) Angular source strength characteristics of two radionuclide neutron sources .20 Annex C (normative) Conventional thermal-neutron fluence rate .22 Bibliography23ISO 8529-1:2001(E) iv Foreword ISO (the Inte

13、rnational Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has

14、 been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical s

15、tandardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at

16、 least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 8529 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 8529-1 was prepar

17、ed by Technical Committee ISO/TC 85, Nuclear energy, Subcommittee SC 2, Radiation protection. ISO 8529 consists of the following parts, under the general title Reference neutron radiations: Part 1: Characteristics and methods of production Part 2: Calibration fundamentals of radiation protection dev

18、ices related to the basic quantities characterizing the radiation field Part 3: Calibration of area and personal dosimeters and determination of response as a function of energy and angle of incidence Annexes A and C form a normative part of this part of ISO 8529. Annex B is for information only.ISO

19、 8529-1:2001(E)v Introduction This part of ISO 8529 supersedes ISO 8529:1989. It is the first of a set of three International Standards concerning the calibration of dosimeters and dose-rate meters for neutron radiation for protection purposes. It describes the characteristics and methods of product

20、ion of the reference neutron radiations to be used for calibrations. ISO 8529-2 describes fundamentals related to the physical quantities characterizing the radiation field and calibration procedures in general terms, with emphasis on active dose-rate meters and the use of radionuclide sources. ISO

21、8529-3 deals with dosimeters for area and individual monitoring, describing the respective procedures for calibrating and determining the response in terms of the International Commission on Radiation Units and Measurements (ICRU) operational quantities. Conversion coefficients for converting neutro

22、n fluence into these operational quantities are provided in ISO 8529-3.ISO 8529-1:2001(E)v Inrtitcudono Thsi rapt of IOS 5892 surepssede ISO 85:92891.9 tI si hte frist fo a ste fo rhtee Iretnnatinola atSradnsd ccnorening eht carbilaitno fo sodmiretes dna sod-erate merets for rtuenon rdataiion for pr

23、ocettoin rupsopse. It dsecrsebi eht crahcaretistcis and mesdoht fo rpdocuoitn fo eht rferecnee neurtno ridaitasno ot eb usde for clarbiations. OSI 85-922 sedcrsebi funmadslatne rleetad ot eht physical qutnaities crahcaretigniz eht rdataiino field and carbilaitno rpcoerudse ni general trems, whti ems

24、ahpsi no cative dose-reta mretes dna the use fo ridacunodile sruoces. OSI 85-923 aedsl iwht dosimerets for area dna niidivaudl mrotinoi,gn sedcrbigni teh rescepitev rpcorudese for crbilaatign dna tedremignin the rsepsnoe in trems of eht Iretntannoial Cmomissino no aRiditaon Ustin and saeMmerustne ()

25、URCI potarenoial auqtitnsei. noCvsreion cfeoficistne fro convitregn ortuenn feulnce inot sehte repotaoilan uqtnaities are rpvoedid in ISO 85-92.3INTERNATIONAL STANDARD ISO 8529-1:2001(E)1 Reference neutron radiations Part 1: Characteristics and methods of production 1 Scope This part of ISO 8529 spe

26、cifies the reference neutron radiations, in the energy range from thermal up to 20 MeV, for calibrating neutron-measuring devices used for radiation protection purposes and for determining their response as a function of neutron energy. Reference radiations are given for neutron fluence rates of up

27、to 1 10 9 m 2 s 1 , corresponding, at a neutron energy of 1 MeV, to dose-equivalent rates of up to 100 mSv h 1 . This part of ISO 8529 is concerned only with the methods of producing and characterizing the neutron reference radiations. The procedures for applying these radiations for calibrations ar

28、e described in ISO 8529-2 and ISO 8529-3. The reference radiations specified are the following: neutrons from radionuclide sources, including neutrons from sources in a moderator; neutrons produced by nuclear reactions with charged particles from accelerators; neutrons from reactors. In view of the

29、methods of production and use of them, these reference radiations are divided, for the purposes of this part of ISO 8529, into the following two separate sections. In clause 4, radionuclide neutron sources with wide spectra are specified for the calibration of neutron- measuring devices. These sourc

30、es should be used by laboratories engaged in the routine calibration of neutron-measuring devices, the particular design of which has already been type tested. In clause 5, accelerator-produced monoenergetic neutrons and reactor-produced neutrons with wide or quasi monoenergetic spectra are specifie

31、d for determining the response of neutron-measuring devices as a function of neutron energy. Since these reference radiations are produced at specialized and well equipped laboratories, only the minimum of experimental detail is given. For the conversion of neutron fluence into the quantities recommended for radiation protection purposes, conversion coefficients have been calculated based on the spectra presented in normative annex A and using the fluence-to-dose-equivalent conversion coefficients as a function of neutron energy as given in ICRP Publication 74 and ICRU Report 57.