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ISO 21909-1:2015

(Main)

Passive neutron dosimetry systems — Part 1: Performance and test requirements for personal dosimetry

Passive neutron dosimetry systems — Part 1: Performance and test requirements for personal dosimetry

ISO 21909-1:2015 provides performance and test requirements for determining the acceptability of neutron dosimetry systems to be used for the measurement of personal dose equivalent, Hp(10), for neutrons ranging in energy from thermal to 20 MeV[1]. No distinction between the different techniques available in the market place is made in the description of the tests. Only generic distinctions, as disposable or reusable dosemeters for instance, are considered. This part of ISO 21909 gives information for extremity dosimetry, based on recommendations given by ICRU Report 66 in Annex A. [1] This maximal limit of the energy range is only an order of magnitude. The reference radiation fields used for the performance tests are those defined in ISO 8529-1. This means that the maximal energies could only be 14,8 MeV or 19 MeV. The present standard gives performance requirements to 14,8 MeV which is the typical neutron energy encountered for fusion. For fission spectra, the highest energies are around 20 MeV but the contribution to dose equivalent coming from neutrons with energy higher than 14,8 MeV is negligible.

Systèmes dosimétriques passifs pour les neutrons — Partie 1: Exigences de fonctionnement et d'essai pour la dosimétrie individuelle

ISO 21909-1:2015 fournit des exigences de fonctionnement et d'essai permettant de déterminer l'acceptabilité des systèmes dosimétriques pour les neutrons qui doivent être utilisés pour le mesurage de l'équivalent de dose individuel, Hp(10), dans une gamme d'énergies neutroniques s'étendant des énergies thermiques à 20 MeV[1]. Aucune distinction entre les différentes techniques disponibles sur le marché n'est faite dans la description des essais. Seules des distinctions générales, telles que dosimètres à usage unique ou réutilisables par exemple, sont prises en compte. L'Annexe A de la présente partie de l'ISO 21909 fournit des informations relatives à la dosimétrie aux extrémités, basées sur les recommandations données dans le Rapport 66 de l'ICRU. [1] Cette limite maximale de la gamme d'énergies n'est qu'un ordre de grandeur. Les champs de rayonnement de référence utilisés pour les essais de fonctionnement sont ceux définis dans l'ISO 8529-1. Cela signifie que les énergies maximales ne peuvent être que de 14,8 MeV ou de 19 MeV. La présente norme spécifie les exigences de fonctionnement jusqu'à 14,8 MeV qui est l'énergie neutronique généralement rencontrée lors des réactions de fusion. En ce qui concerne les spectres de fission, les énergies maximales sont de l'ordre de 20 MeV, mais la contribution à l'équivalent de dose des neutrons ayant une énergie supérieure à 14,8 MeV est négligeable.

General Information

Status
Withdrawn
Publication Date
29-Nov-2015
Withdrawal Date
29-Nov-2015
ICS
13.280 - Radiation protection
Technical Committee
ISO/TC 85/SC 2 - Radiological protection
Drafting Committee
ISO/TC 85/SC 2/WG 19 - Individual monitoring of external radiation
Current Stage
9599 - Withdrawal of International Standard
Start Date
03-Dec-2021
Completion Date
08-Nov-2025
Ref Project

Relations

Revises
ISO 21909:2005 - Passive personal neutron dosemeters — Performance and test requirements
Effective Date
23-Feb-2012
ISO 21909-1:2015 - Passive neutron dosimetry systemsISO 21909-1:2015 - Passive neutron dosimetry systems
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Standards Content (Sample)


INTERNATIONAL ISO
STANDARD 21909-1
First edition
2015-12-15
Corrected version
2015-12-15
Passive neutron dosimetry systems —
Part 1:
Performance and test requirements
for personal dosimetry
Systèmes dosimétriques passifs pour les neutrons —
Partie 1: Exigences de fonctionnement et d’essai pour la dosimétrie
individuelle
Reference number
©
ISO 2015
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, and symbols . 1
3.1 General terms and definitions . 1
3.2 Terms relating to quantities . 2
3.3 Terms relating to calibration and evaluation . 3
3.4 List of symbols . 6
4 General test conditions . 8
4.1 Test conditions . 8
4.2 Reference radiation . 8
4.3 Tests requirements . 8
5 Tests and performance requirements . 9
6 Test methods .12
7 Performance tests: intrinsic characteristics .12
7.1 General .12
7.2 Irradiations .12
7.3 Qualification for eliminating the use of the full neutron and photon package .17
7.3.1 Aim of the test .17
7.3.2 Method of test .18
7.3.3 Interpretation of results .18
7.4 Performances tests .18
7.4.1 General.18
7.4.2 Coefficient of variation/linearity .18
7.4.3 Energy and angle dependence of the response .19
7.4.4 Specific test for thermal neutrons .20
8 Performance tests: stability in the range of realistic conditions of use of the dosemeters .21
8.1 Fading . .21
8.1.1 General.21
8.1.2 Method of test .21
8.1.3 Interpretation of results .22
8.2 Ageing .22
8.2.1 General.22
8.2.2 Method of test .23
8.2.3 Interpretation of results .23
8.3 Effect of storage for unexposed dosemeters .24
8.3.1 General.24
8.3.2 Method of test .24
8.3.3 Interpretation of results .24
8.4 Exposure to radiation other than neutrons .24
8.4.1 General.24
8.4.2 Photon radiation .24
8.4.3 Radon .26
8.5 Stability under various climatic conditions .26
8.5.1 General.26
8.5.2 Effect on the dose response .26
8.5.3 Effect for unexposed dosemeters .27
8.6 Effect of light exposure (insensitivity to light) .28
8.6.1 Effect on the dose response .28
8.6.2 Effect for unexposed dosemeters .28
8.7 Drop test .28
8.7.1 Effect on the dose response .29
8.7.2 Effect for unexposed dosemeters .29
8.8 Distance to the phantom.29
8.8.1 General.29
8.8.2 Method of test .30
8.8.3 Interpretation of results .30
8.9 Sealing .30
9 Identification and accompanying documentation .30
9.1 Individual marking .30
9.2 Collective marking .30
9.3 Accompanying documentation .31
Annex A (normative) Dosimetry for the irradiation of the extremities .32
Annex B (normative) Reference and standard test conditions .33
Annex C (informative) Irradiation conditions .34
Annex D (normative) Conversion tables .35
Annex E (normative) Confidence limits .36
Bibliography .39
iv © ISO 2015 – All rights reserved

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 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 part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the
...


NORME ISO
INTERNATIONALE 21909-1
Première édition
2015-12-15
Version corrigée
2015-12-15
Systèmes dosimétriques passifs pour
les neutrons —
Partie 1:
Exigences de fonctionnement et
d’essai pour la dosimétrie individuelle
Passive neutron dosimetry systems —
Part 1: Performance and test requirements for personal dosimetry
Numéro de référence
©
ISO 2015
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2015, Publié en Suisse
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – Tous droits réservés

Sommaire Page
Avant-propos .v
Introduction .vi
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes, définitions et symboles . 1
3.1 Termes généraux et leurs définitions . 2
3.2 Termes relatifs aux grandeurs . 2
3.3 Termes relatifs à l’étalonnage et l’évaluation . 4
3.4 Liste des symboles . 7
4 Conditions générales d’essai . 8
4.1 Conditions d’essai . 8
4.2 Rayonnements de référence . 8
4.3 Exigences relatives aux essais . . 9
5 Essais et exigences de fonctionnement . 9
6 Méthodes d’essai .12
7 Essais de fonctionnement: caractéristiques intrinsèques .12
7.1 Généralités .12
7.2 Irradiations .13
7.3 Qualification en vue de supprimer l’utilisation du dosimètre combiné pour
neutrons et photons .17
7.3.1 Objectif de l’essai .17
7.3.2 Méthode d’essai .18
7.3.3 Interprétation des résultats .18
7.4 Essais de fonctionnement .18
7.4.1 Généralités .18
7.4.2 Coefficient de variation/linéarité .19
7.4.3 Dépendances énergétique et angulaire de la réponse .20
7.4.4 Essai spécifique pour les neutrons thermiques .21
8 Essais de fonctionnement: stabilité dans la gamme des conditions réalistes
d’utilisation des dosimètres .21
8.1 Effacement .21
8.1.1 Généralités .21
8.1.2 Méthode d’essai .22
8.1.3 Interprétation des résultats .22
8.2 Vieillissement .22
8.2.1 Généralités .22
8.2.2 Méthode d’essai .23
8.2.3 Interprétation des résultats .23
8.3 Effet du stockage pour des dosimètres non exposés .24
8.3.1 Généralités .24
8.3.2 Méthode d’essai .24
8.3.3 Interprétation des résultats .24
8.4 Exposition aux rayonnements autres que neutroniques .24
8.4.1 Généralités .24
8.4.2 Rayonnements photoniques .24
8.4.3 Radon .26
8.5 Stabilité dans des conditions climatiques variées .26
8.5.1 Généralités .26
8.5.2 Effet sur la réponse en dose .26
8.5.3 Effet pour des dosimètres non exposés .27
8.6 Effet de l’exposition à la lumière (insensibilité à la lumière) .28
8.6.1 Effet sur la réponse en dose .28
8.6.2 Effet pour des dosimètres non exposés .28
8.7 Essai de chute .28
8.7.1 Effet sur la réponse en dose .29
8.7.2 Effet pour des dosimètres non exposés .29
8.8 Distance par rapport au fantôme .29
8.8.1 Généralités .29
8.8.2 Méthode d’essai .30
8.8.3 Interprétation des résultats .30
8.9 Étanchéité .30
9 Documentation d’identification et d’accompagnement .30
9.1 Marquage individuel .30
9.2 Marquage collectif .30
9.3 Documentation d’accompagnement.31
Annex A (normative) Dosimétrie pour l’irradiation des extrémités .32
Annex B (normative) Conditions de référence et conditions normales d’essai .33
Annex C (informative) Conditions d’irradiation .34
Annex D (normative) Tableaux de conversion .36
Annex E (normative) Limites de confiance .37
Bibliographie .41
iv © ISO 2015 – Tous droits réservés

Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l’ISO participent également aux travaux.
L’ISO collabore étroitement avec la Commission électrotechnique internationale (IEC) en ce qui
concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier de prendre note des différents
critères d’approbation requis pour
...

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ISO 24426:2023(Main)
Radiological protection — Content of input data for the statistical analysis of dose records of individuals monitored for occupational exposure to ionizing radiation

The objective of this document is to promote the harmonization of data and information reporting formats in order to provide the basis for the evaluation of occupational exposure with a view to allow for benchmarking capacity at the user level, technical review level, country level and global level (such as UNSCEAR) database or register on occupational exposure. Activity sectors and occupations (where employees are classified as occupationally exposed workers) that is included in this database or register as well as dose types and different values of interest concerning occupational exposure are described as follows. A typical national dose register (NDR): — contains personal, employment, and dosimetric data of occupational employment and wage statistics (OEWs) in the country. — assists national authorities in controlling and safekeeping of the occupational doses and to allow statistical evaluations (e.g., dose trends to answer requests from regulators and others). — assists in regulatory control by notifying regulatory authorities of overexposures within their jurisdiction and the licensee in their respective facility. — contributes to health research and to the scientific knowledge on risks from occupational exposure to ionizing radiation. — provides dose histories to individual workers and organizations for work planning and for compensation and litigation cases. All information provided by the NDR, including dose histories, may be subject to confidentiality requirements. This document is aimed at national dose registries but may be also applicable to dosimetry services that provide data to national dose registries. NOTE Such a database or register on occupational radiation dose for different sectors will, among other reasons, allow to prepare the data necessary for more global surveys, such as those undertaken by the UNSCEAR and other databases such as IAEA’s Information System on Occupational Exposure in Medicine, Industry and Research (ISEMIR), Information System on Occupational Exposure (ISOE) and the European Platform for Occupational Radiation Exposure (ESOREX‑Platform). Presently, as the formats are different, the international description of national statistics is often incomplete or inaccurate, and in the end, the comparison of data is not established yet in many countries. This standard defines a common and easily shared format to collect reliable, traceable and directly comparable data on individual and collective exposure in activity sectors and occupations as defined in a common way. This document addresses: a) a common list of activity sectors and occupations, and b) a common and easily shared format about dose types and different values of interest concerning occupational exposure in order to collect consistent and directly comparable data on individual and collective exposure.

  • Standard
    21 pages
    English language
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