BS-ISO-11929-1-2000.pdf
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1、BRITISH STANDARD BS ISO 11929-1:2000 Determination of the detection limit and decision threshold for ionizing radiation measurements Part 1: Fundamentals and application to counting measurements without the influence of sample treatment ICS 17.240 ? Licensed Copy: sheffieldun sheffieldun, na, Sun No
2、v 26 03:43:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 11929-1:2000 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 3 September 2004 BSI 3 September 2004 ISBN 0 580 44401 5 National foreword This British Standard reproduces verbatim
3、ISO 11929-1:2000 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee NCE/2, Radiation protection and measurement, which has the responsibility to: A list of organizations represented on this committee can be obtained on request
4、to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalo
5、gue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand th
6、e text; present to the responsible international/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 fron
7、t cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 14, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffiel
8、dun sheffieldun, na, Sun Nov 26 03:43:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI A Reference number ISO 11929-1:2000(E) LANOITANRETNI DRADNATS ISO 1-92911 noitide tsriF 10-70-0002 Determination of the detection limit and decision threshold for ionizing radiation measurements Part 1: Fundamentals
9、and application to counting measurements without the influence of sample treatment Dtermination de la limite de dtection et du seuil de dcision des mesurages des rayonnements ionisants Partie 1: Principes fondamentaux et application aux mesures par comptage, sans linfluence du traitement de lchantil
10、lon A ebmun ecnerefeRr 0002:1-92911 OSI(E) INTERNATIONAL STANDARD ISO 11929-1 First edition 2000-07-01 dna timil noitceted eht fo noitanimreteD noitaidar gnizinoi rof dlohserht noisiced stnemerusaem :1 traP gnitnuoc ot noitacilppa dna slatnemadnuF elpmas fo ecneulfni eht tuohtiw stnemerusaem tnemtae
11、rt sed noisicd ed liues ud te noitcetd ed etimil al ed noitanimretD stnasinoi stnemennoyar sed segarusem raPtei :1 rPcniisep xuatnemadnof cilppa texua noita semures rap c,egatpmo nollitnahcl ed tnemetiart ud ecneulfnil snas BS ISO 119291:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03
12、:43:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii ContentsPage Foreword.iii Introductioniv 1 Scope1 2 Normative reference1 3 Terms and definitions .1 4 Symbols3 5 Statistical values and confidence interval 4 5.1 Principles.4 5.2 Decision threshold4 5.3 Detection limit.5 5.4 Confidence interval.6
13、6 Application of this part of ISO 11929 (see annex A)6 6.1 Specified values6 6.2 Assessment of a measuring procedure .6 6.3 Assessment of measured results .6 6.4 Documentation6 Annex A (informative) Example of application of this part of ISO 11929.13 Bibliography14 BS ISO 119291:2000 Licensed Copy:
14、sheffieldun sheffieldun, na, Sun Nov 26 03:43:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carr
15、ied 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 part in the work.
16、ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical commi
17、ttees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 11929-1 was prepared by Technical Committee ISO/TC 85, Nuclear energy, SC 2, Radiation protection, Working
18、 Group WG 17 (formerly WG 2), Radioactivity measurements. ISO 11929 consists of the following parts, under the general title Determination of the detection limit and decision threshold for ionizing radiation measurements: Part 1: Fundamentals and application to counting measurements without the infl
19、uence of sample treatment Part 2: Fundamentals and application to counting measurements with the influence of sample treatment Part 3: Fundamentals and application to counting measurements by high resolution gamma spectrometry, without the influence of sample treatment Part 4: Fundamentals and appli
20、cation to measurements by use of linear scale analogue ratemeters, without the influence of sample treatment Annex A of this part of ISO 11929 is for information only. BS ISO 119291:2000 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:43:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Int
21、roduction This part of ISO 11929 gives basic information on the statistical fundamentals for determination of the detection limit and decision threshold (and additional directives for specification of a confidence interval) for nuclear counting radiation measurements based on the principles defined
22、by Altschuler and Pasternack 1, Nicholson 7 and Currie 3. As an example, information is given for a gross (integral) counting measurement. Other parts of ISO 11929 deal with counting measurements which take sample treatment into consideration and with analogue pulse-rate measurements and specific pr
23、oblems which occur when this part of ISO 11929 is applied (e.g. in the case of spectrometric measurements or continuous monitoring of radioactive effluents). This part of ISO 11929 concerns the field of nuclear radiation measurement in which events (in particular pulses) are counted (for example on
24、samples). It considers exclusively the random character of radioactive decay and of pulse counting and ignores all other influences (e.g. arising from sample treatment, weighing, enrichment or the instability of the test setup). It also assumes that the duration of measurement is small in relation t
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