ISO 14146:2024
(Main)Radiological protection — Criteria and performance limits for the periodic evaluation of dosimetry services for external radiation
Radiological protection — Criteria and performance limits for the periodic evaluation of dosimetry services for external radiation
This document specifies the dosimetric and organizational criteria and the test procedures to be used for the periodic verification of the performance of dosimetry services supplying personal and/or area, i.e. workplace and/or environmental, dosemeters used for individual (personal) and/or area, i.e. workplace and/or environmental monitoring. NOTE The quality of a supplier of a dosimetry service depends on both the characteristics of the approved (type‑tested) dosimetry system and the training and experience of the staff, together with the calibration procedures and quality assurance programmes. The performance evaluation according to this document can be carried out by a dosimetry service to demonstrate the fulfilment of specified performance requirements. The irradiation qualities used in this document are representative for exposure situations that are expected or mimic workplace fields from the radiological activities being monitored using the dosemeters from the services. This document applies to personal and area dosemeters for the assessment of external photon radiation with a fluence-weighted mean energy between 8 keV and 10 MeV, beta radiation with a fluence-weighted mean energy between 60 keV and 1,2 MeV, and neutron radiation with a fluence-weighted mean energy between 25,3 meV, i.e. thermal neutrons with a Maxwellian energy distribution with kT = 25,3 meV, and 200 MeV. It covers all types of personal and area dosemeters needing laboratory processing (e.g. thermoluminescent, optically stimulated luminescence, radiophotoluminescent, track detectors or photographic-film dosemeters) and involving continuous measurements or measurements repeated regularly at fixed time intervals (e.g. several weeks, one month). Active direct reading as well as semi-passive or hybrid dosemeters, such as direct ion storage (DIS) or silicon photomultiplier (SiPM) dosemeters, for dose measurement, can also be treated according to this document. Then, they are treated as if they were passive, i.e. the dosimetry service reads their indicated values and reports them to the evaluation organization. In this document, the corrected indicated (corrected indication) value is the one given by the dosimetry systems as the final result of the evaluation algorithm (for example display of the software, printout) in units of dose equivalent (Sv). Environmental dosemeters usually indicate the quantity H*(10) but they can, in addition or alternatively, indicate the quantity H'(3), H'(0,07), air kerma, Ka, or absorbed dose, D. All these dosemeters can also be treated according to this document. If Ka or D is indicated (in Gy) the dose values in this document stated in Sv shall then be interpreted as equivalent values in Gy.
Radioprotection — Critères et limites de performance pour l’évaluation périodique des services de dosimétrie pour le rayonnement externe
Le présent document spécifie les critères dosimétriques et organisationnels ainsi que les procédures d’essai à utiliser pour la vérification périodique des performances des services de dosimétrie qui fournissent des dosimètres individuels et/ou de zone, c’est-à-dire de lieu de travail et/ou d’environnement, utilisés pour la surveillance individuelle (personnelle) et/ou de zone, c’est-à-dire de lieu de travail et/ou d’environnement. NOTE La qualité d’un prestataire de services de dosimétrie dépend à la fois des caractéristiques du système dosimétrique homologué (ayant été soumis à un essai de type) et de la formation et de l’expérience du personnel, ainsi que des procédures d’étalonnage et des programmes d’assurance qualité. L’évaluation des performances conformément au présent document peut être effectuée par un service de dosimétrie afin de démontrer que les exigences de performance spécifiées sont respectées. Les qualités d’irradiation utilisées dans le présent document sont représentatives des situations d’exposition attendues ou qui imitent les champs générés sur le lieu de travail, qui proviennent des activités radiologiques surveillées à l’aide des dosimètres des services. Le présent document s’applique aux dosimètres individuels et aux dosimètres de zone utilisés pour l’estimation des rayonnements suivants: rayonnement photonique externe d’une énergie moyenne pondérée par la fluence comprise entre 8 keV et 10 MeV, rayonnement bêta d’une énergie moyenne pondérée par la fluence comprise entre 60 keV et 1,2 MeV et rayonnement neutronique d’une énergie moyenne pondérée par la fluence comprise entre 25,3 meV (c’est-à-dire des neutrons thermiques présentant une distribution énergétique maxwellienne avec kT = 25,3 meV) et 200 MeV. Il couvre tous les types de dosimètres individuels ou de zone nécessitant un traitement en laboratoire (par exemple, dosimètres thermoluminescents, à luminescence stimulée optiquement, radiophotoluminescents, détecteurs de traces ou à films photographiques) utilisés pour réaliser des mesurages continus ou répétés à intervalles réguliers (par exemple, de plusieurs semaines ou d’un mois). Les dosimètres actifs à lecture directe ainsi que les dosimètres semi-passifs ou hybrides, tels que les dosimètres à stockage d’ions directs (DIS) ou les dosimètres à photomultiplicateur en silicium (SiPM), pour le mesurage de dose, peuvent également être traités conformément au présent document. Dans ce cas, il convient de les considérer comme des dosimètres passifs, c’est-à-dire que le service de dosimétrie relève les valeurs affichées et les communique à l’organisme d’évaluation. Dans le présent document, la valeur corrigée affichée (indication corrigée) est celle que les systèmes dosimétriques présentent comme résultat final de l’algorithme d’évaluation (par exemple, affichage du logiciel, impression) en unités d’équivalent de dose (Sv). Les dosimètres d’environnement indiquent généralement la grandeur H*(10) mais peuvent en plus ou de manière alternative, indiquer la grandeur H’(3), H’(0,07), le kerma dans l’air, Ka, ou la dose absorbée, D. Tous ces dosimètres peuvent également être traités conformément au présent document. Si Ka ou D est indiqué (en Gy), les valeurs de dose indiquées en Sv dans le présent document doivent être interprétées comme des valeurs équivalentes en Gy.
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International
Standard
ISO 14146
Third edition
Radiological protection — Criteria
2024-07
and performance limits for the
periodic evaluation of dosimetry
services for external radiation
Radioprotection — Critères et limites de performance pour
l’évaluation périodique des services de dosimétrie pour le
rayonnement externe
Reference number
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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.
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Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Quantities measured . 8
5 Frequency of evaluation. 8
6 Test conditions . 9
6.1 Standard test conditions and special handling conditions .9
6.2 Radiation qualities .9
6.3 Dose range .10
6.4 Irradiation of dosemeters .11
7 Performance limits . .11
7.1 Limits to the response .11
7.1.1 General requirements .11
7.1.2 Requirements at reference conditions . 12
7.2 Approval criterion . 12
8 Operational procedures .12
8.1 Evaluation sample size . 12
8.2 Evaluation procedure . 13
8.3 Evaluation sequence . 13
9 Test report . 14
Annex A (normative) Reference conditions and standard test conditions .15
Annex B (informative) Graphical illustrations of the performance limits . 17
Bibliography . 19
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 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 different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 85, Nuclear energy, nuclear technologies, and
radiological protection, Subcommittee SC 2, Radiological protection, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 430, Nuclear energy, nuclear technologies,
and radiological protection, in accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 14146:2018) which has been technically
revised.
The main changes are as follows:
— the addition and clarification of several definitions;
— the modification of the requirements to environmental dosemeters;
— the addition of a requirement at reference conditions.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
International Standard ISO 14146:2024(en)
Radiological protection — Criteria and performance limits
for the periodic evaluation of dosimetry services for external
radiation
1 Scope
This document specifies the dosimetric and organizational criteria and the test procedures to be used
for the periodic verification of the performance of dosimetry services supplying personal and/or area, i.e.
workplace and/or environmental, dosemeters used for individual (personal) and/or area, i.e. workplace
and/or environmental monitoring.
NOTE The quality of a supplier of a dosimetry service depends on both the characteristics of the approved
1)
(type-tested) dosimetry system and the training and experience of the staff, together with the calibration procedures
and quality assurance programmes.
The performance evaluation according to this document can be carried out by a dosimetry service to
demonstrate the fulfilment of specified performance requirements. The irradiation qualities used in this
document are representative for exposure situations that are expected or mimic workplace fields from the
radiological activities being monitored using the dosemeters from the services.
This document applies to personal and area dosemeters for the assessment of external photon radiation
with a fluence-weighted mean energy between 8 keV and 10 MeV, beta radiation with a fluence-weighted
mean energy between 60 keV and 1,2 MeV, and neutron radiation with a fluence-weighted mean energy
between 25,3 meV, i.e. thermal neutrons with a Maxwellian energy distribution with kT = 25,3 meV,
and 200 MeV.
It covers all types of personal and area dosemeters needing laboratory processing (e.g. thermoluminescent,
optically stimulated luminescence, radiophotoluminescent, track detectors or photographic-film
dosemeters) and involving continuous measurements or measurements repeated regularly at fixed time
intervals (e.g. several weeks, one month).
Active direct reading as well as semi-passive or hybrid dosemeters, such as direct ion storage (DIS) or silicon
photomultiplier (SiPM) dosemeters, for dose measurement, can also be treated according to this document.
Then, they are treated as if they were passive, i.e. the dosimetry service reads their indicated values and
reports them to the evaluation organization.
In this document, the corrected indicated (corrected indication) value is the one given by the dosimetry
systems as the final result of the evaluation algorithm (for example display of the software, printout) in
units of dose equivalent (Sv).
Environmental dosemeters usually indicate the quantity H*(10) but they can, in addition or alternatively,
indicate the quantity H'(3), H'(0,07), air kerma, K , or absorbed dose, D. All these dosemeters can also be
a
treated according to this document. If K or D is indicated (in Gy) the dose values in this document stated in
a
Sv shall then be interpreted as equivalent values in Gy.
1) If this document is applied to a dosimetry system for which no approval (pattern or type test) has been provided,
then in the following text approval or type test should be read as the technical data sheet provided by the manufacturer
or as the data sheet required by the regulatory body.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 4037-1, Radiological protection — X and gamma reference radiation for calibrating dosemeters and doserate
meters and for determining their response as a function of photon energy — Part 1: Radiation characteristics
and production methods
ISO 4037-2, Radiological protection — X and gamma reference radiation for calibrating dosemeters and
doserate meters and for determining their response as a function of photon energy — Part 2: Dosimetry for
radiation protection over the energy ranges from 8 keV to 1,3 MeV and 4 MeV to 9 MeV
ISO 4037-3, Radiological protection — X and gamma reference radiation for calibrating dosemeters and
doserate meters and for determining their response as a function of photon energy — Part 3: Calibration of area
and personal dosemeters and the measurement of their response as a function of energy and angle of incidence
ISO 6980-1, Nuclear energy — Reference beta-particle radiation — Part 1: Methods of production
ISO 6980-2, Nuclear energy — Reference beta-particle radiation — Part 2: Calibration fundamentals related to
basic quantities characterizing the radiation field
ISO 6980-3, Nuclear energy — Reference beta-particle radiation — Part 3: Calibration of area and personal
dosemeters and the determination of their response as a function of beta radiation energy and angle of incidence
ISO 8529-1, Neutron reference radiations fields — Part 1: Characteristics and methods of production
ISO 8529-2, Reference neutron radiations — Part 2: Calibration fundamentals of radiation protection devices
related to the basic quantities characterizing the radiation field
ISO 8529-3, Neutron reference radiation fields — Part 3: Calibration of area and personal dosemeters and
determination of their response as a function of neutron energy and angle of i
...
Norme
internationale
ISO 14146
Troisième édition
Radioprotection — Critères et
2024-07
limites de performance pour
l’évaluation périodique des
services de dosimétrie pour le
rayonnement externe
Radiological protection — Criteria and performance limits
for the periodic evaluation of dosimetry services for external
radiation
Numéro de référence
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2024
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, 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, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
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CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii
Sommaire Page
Avant-propos .iv
1 Domaine d’application . 1
2 Références normatives . 2
3 Termes et définitions . 3
4 Grandeurs mesurées. 8
5 Fréquence d’évaluation . 8
6 Conditions d’essai . 9
6.1 Conditions normales d’essai et conditions particulières de manipulation .9
6.2 Qualités de rayonnement .10
6.3 Plage de doses .11
6.4 Irradiation des dosimètres .11
7 Limites de performance .12
7.1 Limites à la réponse . 12
7.1.1 Exigences générales . 12
7.1.2 Exigences dans les conditions de fonctionnement de référence . 12
7.2 Critère d’homologation . 13
8 Modes opératoires . .13
8.1 Taille de l’échantillon pour évaluation . 13
8.2 Mode opératoire d’évaluation . 13
8.3 Séquence d’évaluation .14
9 Rapport d’essai .15
Annexe A (normative) Conditions de fonctionnement de référence et conditions normales
d’essai . 16
Annexe B (informative) Illustrations graphiques des limites de performance .18
Bibliographie .20
iii
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 les différents types de documents ISO. Le présent document a
été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2 (voir
www.iso.org/directives).
L’ISO attire l’attention sur le fait que la mise en application du présent document peut entraîner l’utilisation
d’un ou de plusieurs brevets. L’ISO ne prend pas position quant à la preuve, à la validité et à l’applicabilité de
tout droit de propriété revendiqué à cet égard. À la date de publication du présent document, l’ISO n’avait pas
reçu notification qu’un ou plusieurs brevets pouvaient être nécessaires à sa mise en application. Toutefois,
il y a lieu d’avertir les responsables de la mise en application du présent document que des informations
plus récentes sont susceptibles de figurer dans la base de données de brevets, disponible à l’adresse
www.iso.org/patents. L’ISO ne saurait être tenue pour responsable de ne pas avoir identifié tout ou partie de
tels droits de propriété.
Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour
information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un engagement.
Pour une explication de la nature volontaire des normes, la signification des termes et expressions
spécifiques de l’ISO liés à l’évaluation de la conformité, ou pour toute information au sujet de l’adhésion de
l’ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles techniques au
commerce (OTC), voir www.iso.org/iso/foreword.html.
Le présent document a été élaboré par le comité technique ISO/TC 85, Énergie nucléaire, technologies
nucléaires, et radioprotection, sous-comité SC 2, Radioprotection, en collaboration avec le Comité européen de
normalisation (CEN), le comité technique CEN/TC 430, Énergie nucléaire, technologies nucléaires, et protection
radiologique, conformément à l’Accord de coopération technique entre l’ISO et le CEN (Accord de Vienne).
Cette troisième édition annule et remplace la deuxième édition (ISO 14146:2018) qui a fait l’objet d’une
révision technique.
Les principales modifications sont les suivantes:
— ajout et clarification de plusieurs définitions;
— modification des exigences relatives aux dosimètres d’environnement;
— ajout d’une exigence relative aux conditions de référence.
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes se
trouve à l’adresse www.iso.org/members.html.
iv
Norme internationale ISO 14146:2024(fr)
Radioprotection — Critères et limites de performance pour
l’évaluation périodique des services de dosimétrie pour le
rayonnement externe
1 Domaine d’application
Le présent document spécifie les critères dosimétriques et organisationnels ainsi que les procédures d’essai
à utiliser pour la vérification périodique des performances des services de dosimétrie qui fournissent des
dosimètres individuels et/ou de zone, c’est-à-dire de lieu de travail et/ou d’environnement, utilisés pour la
surveillance individuelle (personnelle) et/ou de zone, c’est-à-dire de lieu de travail et/ou d’environnement.
NOTE La qualité d’un prestataire de services de dosimétrie dépend à la fois des caractéristiques du système
1)
dosimétrique homologué (ayant été soumis à un essai de type) et de la formation et de l’expérience du personnel,
ainsi que des procédures d’étalonnage et des programmes d’assurance qualité.
L’évaluation des performances conformément au présent document peut être effectuée par un service de
dosimétrie afin de démontrer que les exigences de performance spécifiées sont respectées. Les qualités
d’irradiation utilisées dans le présent document sont représentatives des situations d’exposition attendues
ou qui imitent les champs générés sur le lieu de travail, qui proviennent des activités radiologiques
surveillées à l’aide des dosimètres des services.
Le présent document s’applique aux dosimètres individuels et aux dosimètres de zone utilisés pour
l’estimation des rayonnements suivants: rayonnement photonique externe d’une énergie moyenne pondérée
par la fluence comprise entre 8 keV et 10 MeV, rayonnement bêta d’une énergie moyenne pondérée par la
fluence comprise entre 60 keV et 1,2 MeV et rayonnement neutronique d’une énergie moyenne pondérée
par la fluence comprise entre 25,3 meV (c’est-à-dire des neutrons thermiques présentant une distribution
énergétique maxwellienne avec kT = 25,3 meV) et 200 MeV.
Il couvre tous les types de dosimètres individuels ou de zone nécessitant un traitement en laboratoire (par
exemple, dosimètres thermoluminescents, à luminescence stimulée optiquement, radiophotoluminescents,
détecteurs de traces ou à films photographiques) utilisés pour réaliser des mesurages continus ou répétés à
intervalles réguliers (par exemple, de plusieurs semaines ou d’un mois).
Les dosimètres actifs à lecture directe ainsi que les dosimètres semi-passifs ou hybrides, tels que les
dosimètres à stockage d’ions directs (DIS) ou les dosimètres à photomultiplicateur en silicium (SiPM), pour
le mesurage de dose, peuvent également être traités conformément au présent document. Dans ce cas, il
convient de les considérer comme des dosimètres passifs, c’est-à-dire que le service de dosimétrie relève les
valeurs affichées et les communique à l’organisme d’évaluation.
Dans le présent document, la valeur corrigée affichée (indication corrigée) est celle que les systèmes
dosimétriques présentent comme résultat final de l’algorithme d’évaluation (par exemple, affichage du
logiciel, impression) en unités d’équivalent de dose (Sv).
Les dosimètres d’environnement indiquent généralement la grandeur H*(10) mais peuvent en plus ou de
manière alternative, indiquer la grandeur H’(3), H’(0,07), le kerma dans l’air, K , ou la dose absorbée, D. Tous
a
ces dosimètres peuvent également être traités conformément au présent document. Si K ou D est indiqué
a
(en Gy), les valeurs de dose indiquées en Sv dans le présent document doivent être interprétées comme des
valeurs équivalentes en Gy.
1) Si le présent document devait être appliqué à un système dosimétrique n’ayant pas été homologué (séquence d’essais
ou essai de type), alors, dans la suite du texte, il convient que l’homologation ou l’essai de type soient compris comme
étant la fiche technique établie par le fabricant ou exigée par les autorités réglementaires.
2 Références normatives
Les documents suivants sont cités dans le texte de sorte qu’ils constituent, pour tout ou partie de leur
contenu, des exigences du présent document. Pour les références datées, seule l’édition citée s’applique. Pour
les références non datées, la dernière édition du document de référence s’applique (y compris les éventuels
amendements).
ISO 4037-1, Radioprotection — Rayonnements X et gamma de référence pour l'étalonnage des dosimètres et
des débitmètres, et pour la détermination de leur réponse en fonction de l'énergie des photons — Partie 1:
Caractéristiques des rayonnements et méthodes de production
ISO 4037-2, Radioprotection — Rayonnements X et gamma de référence pour l'étalonnage des dosimètres et des
débitmètres, et pour la détermination de leur réponse en fonction de l'énergie des photons — Partie 2: Dosimétrie
pour la radioprotection dans les gammes d'énergie de 8 keV à 1,3 MeV et de 4 MeV
...
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International
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ISO/FDIS 14146
ISO/TC 85/SC 2
Radiological protection — Criteria
Secretariat: AFNOR
and performance limits for the
Voting begins on:
periodic evaluation of dosimetry
2024-04-10
services for external radiation
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Reference number
ISO/FDIS 14146:2024(en) © ISO 2024
FINAL DRAFT
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International
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ISO/FDIS 14146
ISO/TC 85/SC 2
Radiological protection — Criteria
Secretariat: AFNOR
and performance limits for the
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periodic evaluation of dosimetry
services for external radiation
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© ISO 2024
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MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 14146:2024(en) © ISO 2024
ii
ISO/FDIS 14146:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Quantities measured . 8
5 Frequency of evaluation. 8
6 Test conditions . 9
6.1 Standard test conditions and special handling conditions .9
6.2 Radiation qualities .9
6.3 Dose range .10
6.4 Irradiation of dosemeters .11
7 Performance limits . .11
7.1 Limits to the response .11
7.1.1 General requirements .11
7.1.2 Requirements at reference conditions . 12
7.2 Approval criterion . 12
8 Operational procedures .12
8.1 Evaluation sample size . 12
8.2 Evaluation procedure . 13
8.3 Evaluation sequence . 13
9 Test report . 14
Annex A (normative) Reference conditions and standard test conditions .15
Annex B (informative) Graphical illustrations of the performance limits . 17
Bibliography . 19
iii
ISO/FDIS 14146:2024(en)
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 different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 85, Nuclear energy, nuclear technologies, and
radiological protection, Subcommittee SC 2, Radiological protection, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 430, Nuclear energy, nuclear technologies,
and radiological protection, in accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 14146:2018) which has been technically
revised.
The main changes are as follows:
— the addition and clarification of several definitions;
— the modification of the requirements to environmental dosemeters;
— the addition of a requirement at reference conditions.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
FINAL DRAFT International Standard ISO/FDIS 14146:2024(en)
Radiological protection — Criteria and performance limits
for the periodic evaluation of dosimetry services for external
radiation
1 Scope
This document specifies the dosimetric and organizational criteria and the test procedures to be used for
the periodic verification of the performance of dosimetry services supplying personal and/or area, i.e.,
workplace and/or environmental, dosemeters used for individual (personal) and/or area, i.e. workplace
and/or environmental monitoring.
NOTE The quality of a supplier of a dosimetry service depends on both the characteristics of the approved
1)
(type-tested) dosimetry system and the training and experience of the staff, together with the calibration procedures
and quality assurance programmes.
The performance evaluation according to this document can be carried out by a dosimetry service to
demonstrate the fulfilment of specified performance requirements. The irradiation qualities used in this
document are representative for exposure situations that are expected or mimic workplace fields from the
radiological activities being monitored using the dosemeters from the services.
This document applies to personal and area dosemeters for the assessment of external photon radiation
with a fluence-weighted mean energy between 8 keV and 10 MeV, beta radiation with a fluence-weighted
mean energy between 60 keV and 1,2 MeV, and neutron radiation with a fluence-weighted mean energy
between 25,3 meV, i.e., thermal neutrons with a Maxwellian energy distribution with kT = 25,3 meV,
and 200 MeV.
It covers all types of personal and area dosemeters needing laboratory processing (e.g. thermoluminescent,
optically stimulated luminescence, radiophotoluminescent, track detectors or photographic-film
dosemeters) and involving continuous measurements or measurements repeated regularly at fixed time
intervals (e.g. several weeks, one month).
Active direct reading as well as semi-passive or hybrid dosemeters, such as direct ion storage (DIS) or silicon
photomultiplier (SiPM) dosemeters, (for dose measurement) can also be treated according to this document.
Then, they are treated as if they were passive, i.e. the dosimetry service reads their indicated values and
reports them to the evaluation organization.
In this document, the corrected indicated (corrected indication) value is the one given by the dosimetry
systems as the final result of the evaluation algorithm (for example display of the software, printout) in
units of dose equivalent (Sv).
Environmental dosemeters usually indicate the quantity H*(10) but they can, in addition or alternatively,
indicate the quantity H'(3), H'(0,07), air kerma, K , or absorbed dose, D. All these dosemeters can also be
a
treated according to this document. If K or D is indicated (in Gy) the dose values in this document stated in
a
Sv shall then be interpreted as equivalent values in Gy.
1) If this document is applied to a dosimetry system for which no approval (pattern or type test) has been provided,
then in the following text approval or type test should be read as the technical data sheet provided by the manufacturer
or as the data sheet required by the regulatory body.
ISO/FDIS 14146:2024(en)
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 4037-1, Radiological protection — X and gamma reference radiation for calibrating dosemeters and doserate
meters and for determining their response as a function of photon energy — Part 1: Radiation characteristics
and production methods
ISO 4037-2, Radiological protection — X and gamma reference radiation for calibrating dosemeters and
doserate meters and for determining their response as a function of photon energy — Part 2: Dosimetry for
radiation protec
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ISO/FDIS 14146:2024(Een)
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Published in Switzerland.
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2 © ISO 2024 – All rights reserved
ii
ISO/FDIS 14146:2024(en) Formatted: Font: 11 pt, Bold
Formatted: Font: Bold
Formatted: HeaderCentered, Left
Contents
Foreword . v
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 3
4 Quantities measured . 10
5 Frequency of evaluation . 10
6 Test conditions . 10
6.1 Standard test conditions and special handling conditions . 10
6.2 Radiation qualities . 11
6.3 Dose range . 12
6.4 Irradiation of dosemeters . 13
7 Performance limits . 13
7.1 Limits to the response . 13
7.1.1 General requirements . 13
7.1.2 Requirements at reference conditions . 14
7.2 Approval criterion . 14
8 Operational procedures . 14
8.1 Evaluation sample size . 14
8.2 Evaluation procedure . 15
8.3 Evaluation sequence . 15
9 Test report . 16
Annex A (normative) Reference conditions and standard test conditions . 17
Bibliography . 21
Foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 6
4 Quantities measured . 12
5 Frequency of evaluation . 12
6 Test conditions . 13
6.1 Standard test conditions and special handling conditions . 13
6.2 Radiation qualities. 14
6.3 Dose range . 14
6.4 Irradiation of dosemeters . 15
7 Performance limits . 15
Formatted: Font: 10 pt
7.1 Limits to the response . 15
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7.1.1 General requirements . 15
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7.1.2 Requirements at reference conditions . 16
7.2 Approval criterion . 17 Formatted: FooterCentered, Left
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8 Operational procedures . 17
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8.1 Evaluation sample size . 17
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© ISO 2024 – All rights reserved
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ISO/FDIS 14146:2024(Een)
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8.2 Evaluation procedure . 17
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8.3 Evaluation sequence . 17
9 Test report . 18
Annex A (normative) Reference conditions and standard test conditions . 20
Annex B (informative) Graphical illustrations of the performance limits . 22
Bibliography . 24
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4 © ISO 2024 – All rights reserved
iv
ISO/FDIS 14146:2024(en) Formatted: Font: 11 pt, Bold
Formatted: Font: Bold
Formatted: HeaderCentered, Left
Foreword Formatted: Adjust space between Latin and Asian text,
Adjust space between Asian text and numbers
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 different approval criteria needed for the different types of
ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives). Formatted: English (United Kingdom)
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for identifying any or all such
patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.htmlwww.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 85, Nuclear energy, nuclear technologies, and
radiological protection, Subcommittee SC 2, Radiological protection, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 430, Nuclear energy, nuclear technologies,
and radiological protection, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 14146:2018) which has been technically Formatted: Default Paragraph Font
revised.
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
The main changes are as follows:
Formatted: Adjust space between Latin and Asian text,
— — the addition and clarification of several definitions;
Adjust space between Asian text and numbers, Tab stops: Not
at 0.
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