BS-ISO-14850-1-2004.pdf
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1、BRITISH STANDARD BS ISO 14850-1:2004 Nuclear energy Waste-packages activity measurement Part 1: High-resolution gamma spectrometry in integral mode with open geometry ICS 13.030.30; 17.240 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:29:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS
2、 ISO 14850-1:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 9 September 2004 BSI 9 September 2004 ISBN 0 580 44435 X National foreword This British Standard reproduces verbatim ISO 14850-1:2004 and implements it as the UK national stand
3、ard. The UK participation in its preparation was entrusted to Technical Committee NCE/9, Nuclear fuel cycle technology, 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 imp
4、lement 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 Catalogue or of British Standards Online. This publication does not purp
5、ort 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 the text; present to the responsible international/European committe
6、e 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 page, pages ii to v,
7、 a blank page, pages 1 to 20, 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: sheffieldun sheffieldun, na, Sun Nov 26 03:29:58 GMT+00:00 20
8、06, Uncontrolled Copy, (c) BSI Reference number ISO 14850-1:2004(E) INTERNATIONAL STANDARD ISO 14850-1 First edition 2004-05-15 Nuclear energy Waste-packages activity measurement Part 1: High-resolution gamma spectrometry in integral mode with open geometry nergie nuclaire Mesurage de lactivit de co
9、lis de dchets Partie 1: Spectromtrie gamma haute rsolution en mode intgral et gomtrie ouverte BS ISO 148501:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:29:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii BS ISO 148501:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:
10、29:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page Forewordiv Introduction v 1 Scope1 2 Terms, definitions and symbols1 3 Principle.3 4 Detectors and ancillary equipment.4 4.1 Mechanical equipment4 4.2 Detector and preamplifier.4 4.3 Amplifier.5 4.4 Analog-digital converter (ADC)5 4.
11、5 Multi-channel analyzer (MCA) and data processing system5 4.6 Background shielding 5 4.7 Collimator.5 4.8 Gamma ray attenuators5 5 Calibration5 5.1 Principle of the calibration.6 5.2 Calibration apparatus.7 5.3 Measurements to be performed 11 5.4 Error estimation of the calibration parameters12 6 O
12、perating procedure.13 7 Interpretation of results13 7.1 Activity .13 7.2 Uncertainty evaluation14 7.3 Detection limit .15 8 Validation of results16 9 Reporting of results16 Annex A (informative) Radionuclide transformations Energy and intensity of emissions (ICRP publication 38).18 Bibliography .20
13、BS ISO 148501:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:29:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Interna
14、tional Standards 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
15、ISO, also take part in the work. 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 2. The main task of technical
16、committees is to prepare International Standards. 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 least 75 % of the member bodies casting a vote. Attention is drawn to t
17、he possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14850-1 was prepared by Technical Committee ISO/TC 85, Nuclear energy, Subcommittee SC 5, Nuclear fuel technology. ISO 1
18、4850 consists of the following parts, under the general title Nuclear energy Waste-packages activity measurement: Part 1: High-resolution gamma spectrometry in integral mode with open geometry Part 2: Gamma-ray spectrometry using HPGe detectors BS ISO 148501:2004 Licensed Copy: sheffieldun sheffield
19、un, na, Sun Nov 26 03:29:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI v Introduction Several non destructive methods may be used after calibration to determine the radioactive characteristics of a waste package: gamma spectrometry; passive neutron counting, with or without discrimination of neutron
20、s originating from (,n) reactions; active neutron counting, with detection of neutrons resulting from induced fission reactions (prompt or delayed neutrons). This part of ISO 14850 describes one procedure for measuring the activity contained in waste packages by gamma spectrometry and points out rec
21、ommendations for the calibration of a measurement chain. BS ISO 148501:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:29:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 148501:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:29:58 GMT+00:00 2006, Uncontrolled Copy,
22、 (c) BSI INTENRATIONAL TSANDADR IS-05841 O1:(4002E) 1 Nuclear energy Waste-packages activity measurement Part 1: High-resolution gamma spectrometry in integral mode with open geometry 1 Scope This part of ISO 14850 describes a procedure for measurements of gamma-emitting radionuclide activity in the
23、 following homogeneous objects: unconditioned waste, including process waste (filters, control rods, etc.), dismantling waste, etc.; waste conditioned in various matrices (bitumen, hydraulic binder, thermosetting resins, etc.), notably in the form of 100 l, 200 l, 400 l or 800 l drums, and test spec
24、imens or samples, (vitrified waste); waste packaged in a container, notably technological waste. It also specifies the calibration of the gamma spectrometry chain. The gamma energies used generally range from 0,05 MeV to 3 MeV. 2 Terms, definitions and symbols For the purposes of this document, the
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