Radiological protection - Criteria and performance limits for the periodic evaluation of dosimetry services (ISO 14146:2018)

The quality of a supplier of a dosimetry service depends on both the characteristics of the approved (type‑tested) dosimetry system[1] and the training and experience of the staff, together with the calibration procedures and quality assurance programmes.
This document specifies the criteria and the test procedures to be used for the periodic verification of the performance of dosimetry services supplying personal and/or area dosemeters.
An area dosemeter can be a workplace dosemeter or an environmental dosemeter.
The performance evaluation can be carried out as a part of the approval procedure for a dosimetry system or as an independent check to verify that a dosimetry service fulfils specified national or international type test performance requirements under representative exposure conditions that are expected or mimic workplace fields from the radiological activities being monitored.
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 dosemeters (for dose measurement) may also be treated according to this document. Then, they should be treated as if they were passive (i.e. the dosimetry service reads their indicated values and reports them to the evaluation organization).
[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 authority.

Strahlenschutz - Kriterien und Mindestanforderungen bei der wiederkehrenden Überprüfung von Dosismessstellen (ISO 14146:2018)

Die Qualität von Anbietern von Dosismessstellen hängt sowohl von den Eigenschaften des zugelassenen (bauartgeprüften) Dosimetriesystems1 als auch von der Ausbildung und Erfahrung des eingesetzten Perso-nals ab, sowie von den angewandten Kalibrierverfahren und Qualitätssicherungsprogrammen.
Dieses Dokument legt die Kriterien und Prüfverfahren für die wiederkehrende Nachprüfung der Leistungs-fähigkeit von Dosismessstellen fest, die Personen- und/oder Ortsdosimeter bereitstellen.
Ein Ortsdosimeter kann auch ein Arbeitsplatz- oder Umgebungsdosimeter sein.
Die Überprüfung der Leistungsfähigkeit kann als Teil des Zulassungsverfahrens für das Dosimetriesystem erfolgen oder als unabhängige Überprüfung, um sicherzustellen, dass eine Dosismessstelle festgelegte nationale oder internationale Bauartanforderungen unter repräsentativen Expositionsbedingungen erfüllt. Die-se Expositionsbedingungen werden entweder erwartet oder imitieren Arbeitsplatzfelder entsprechend den zu überwachenden radiologischen Tätigkeiten.
Dieses Dokument ist anwendbar für Personen- und Ortsdosimeter für die Überwachung externer Photonen-strahlung mit einer (fluenzgewichteten) mittleren Energie zwischen 8 keV und 10 MeV, Betastrahlung mit einer (fluenzgewichteten) mittleren Energie zwischen 60 keV und 1,2 MeV und Neutronenstrahlung mit einer (fluenzgewichteten) mittleren Energie zwischen 25,3 meV (d. h. thermische Neutronen mit einer Maxwell-Energieverteilung mit kT = 25,3 meV) und 200 MeV.
Es deckt alle Arten von Personen- und Ortsdosimetern ab, die eine Bearbeitung im Labor erfordern (z. B. Thermolumineszenz-Dosimeter, optisch-stimulierte-Lumineszenz-Dosimeter, Radiophotolumineszenz-Dosi-meter, Kernspurdetektoren oder photographische Filmdosimeter) und die eine kontinuierliche Messung oder regelmäßig wiederholte Messungen in bestimmten Zeitabständen umfassen (z. B. mehrere Wochen, ein Monat).
Direkt anzeigende aktive Dosimeter (für die Dosis-Messung) können ebenfalls nach diesem Dokument behandelt werden. Dazu sollten sie wie passive Dosimeter behandelt werden (d. h. die Dosismessstelle liest ihre Anzeigewerte ab und berichtet diese an die auswertende Stelle).

Radioprotection - Critères et limites de performance pour l'évaluation périodique des services de dosimétrie (ISO 14146:2018)

La qualité d'un prestataire de services de dosimétrie dépend à la fois des caractéristiques du système[1] de dosimétrie 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.
Le présent document spécifie les critères et les modes opératoires d'essai à utiliser pour procéder à la vérification périodique de la performance des services de dosimétrie fournissant des dosimètres individuels et/ou des dosimètres de zone.
Un dosimètre de zone peut par exemple être un dosimètre sur poste de travail ou un dosimètre d'environnement.
L'évaluation de performance peut soit faire partie de la procédure d'homologation d'un système de dosimétrie, soit consister en un contrôle indépendant visant à s'assurer qu'un service de dosimétrie satisfait aux exigences de performance liées à un essai de type, spécifiées dans une norme nationale ou internationale, dans des conditions d'exposition représentatives qui correspondent à celles attendues ou simulent les champs de postes de travail des activités radiologiques faisant l'objet d'un suivi dosimétrique.
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 (pour le mesurage de la dose) peuvent également être traités selon le 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).
[1] Si le présent document devait être appliqué à un système de dosimétrie n?ayant reçu aucun agrément (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.

Radiološka zaščita - Merila in meje učinkovitosti za periodično ovrednotenje dozimetričnih storitev (ISO 14146:2018)

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10-Feb-2021
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SLOVENSKI STANDARD
SIST EN ISO 14146:2021
01-april-2021
Radiološka zaščita - Merila in meje učinkovitosti za periodično ovrednotenje
dozimetričnih storitev (ISO 14146:2018)

Radiological protection - Criteria and performance limits for the periodic evaluation of

dosimetry services (ISO 14146:2018)
Strahlenschutz - Kriterien und Mindestanforderungen bei der wiederkehrenden
Überprüfung von Dosismessstellen (ISO 14146:2018)

Radioprotection - Critères et limites de performance pour l'évaluation périodique des

services de dosimétrie (ISO 14146:2018)
Ta slovenski standard je istoveten z: EN ISO 14146:2021
ICS:
13.280 Varstvo pred sevanjem Radiation protection
SIST EN ISO 14146:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 14146:2021
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SIST EN ISO 14146:2021
EN ISO 14146
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2021
EUROPÄISCHE NORM
ICS 13.280
English Version
Radiological protection - Criteria and performance limits
for the periodic evaluation of dosimetry services (ISO
14146:2018)

Radioprotection - Critères et limites de performance Strahlenschutz - Kriterien und Mindestanforderungen

pour l'évaluation périodique des services de bei der wiederkehrenden Überprüfung von

dosimétrie (ISO 14146:2018) Dosismessstellen (ISO 11929-2:2019)
This European Standard was approved by CEN on 18 January 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14146:2021 E

worldwide for CEN national Members.
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SIST EN ISO 14146:2021
EN ISO 14146:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 14146:2021
EN ISO 14146:2021 (E)
European foreword

The text of ISO 14146:2018 has been prepared by Technical Committee ISO/TC 85 "Nuclear energy,

nuclear technologies, and radiological protection” of the International Organization for Standardization

(ISO) and has been taken over as EN ISO 14146:2021 by Technical Committee CEN/TC 430 “Nuclear

energy, nuclear technologies, and radiological protection” the secretariat of which is held by AFNOR.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by August 2021, and conflicting national standards shall

be withdrawn at the latest by August 2021.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 14146:2018 has been approved by CEN as EN ISO 14146:2021 without any modification.

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SIST EN ISO 14146:2021
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SIST EN ISO 14146:2021
INTERNATIONAL ISO
STANDARD 14146
Second edition
2018-07
Radiological protection — Criteria and
performance limits for the periodic
evaluation of dosimetry services
Radioprotection — Critères et limites de performance pour
l'évaluation périodique des services de dosimétrie
Reference number
ISO 14146:2018(E)
ISO 2018
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SIST EN ISO 14146:2021
ISO 14146:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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SIST EN ISO 14146:2021
ISO 14146:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normatives references ................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Quantities measured ........................................................................................................................................................................................ 4

5 Frequency of evaluation ............................................................................................................................................................................... 4

6 Test conditions ....................................................................................................................................................................................................... 4

6.1 Standard test conditions and special handling conditions ............................................................................... 4

6.2 Radiation ...................................................................................................................................................................................................... 4

6.3 Dose range .................................................................................................................................................................................................. 5

7 Performance limits ............................................................................................................................................................................................ 6

7.1 Limits ............................................................................................................................................................................................................... 6

7.1.1 Personal and area dosemeters ............................................................................................................................. 6

7.1.2 Environmental dosemeters for Cs-137 and environmental radiation .............................. 7

7.2 Approval criterion ................................................................................................................................................................................ 7

8 Operational procedures ................................................................................................................................................................................ 7

8.1 Evaluation sample size ..................................................................................................................................................................... 7

8.2 Evaluation procedure ........................................................................................................................................................................ 8

8.3 Evaluation sequence........................................................................................................................................................................... 8

9 Test report ................................................................................................................................................................................................................... 9

Annex A (informative) Graphical illustrations of the performance limits .................................................................10

Bibliography .............................................................................................................................................................................................................................12

© ISO 2018 – All rights reserved iii
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SIST EN ISO 14146:2021
ISO 14146:2018(E)
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 documents 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).

Attention is drawn to the 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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of the 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 the following

URL: 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.

This second edition of ISO 14146 cancels and replaces the first edition (ISO 14146:2000) of which it

constitutes a technical revision. The main change with respect to the previous edition is the inclusion

of beta and neutron radiation as well as eye, extremity and area dosemeters.
iv © ISO 2018 – All rights reserved
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SIST EN ISO 14146:2021
INTERNATIONAL STANDARD ISO 14146:2018(E)
Radiological protection — Criteria and performance limits
for the periodic evaluation of dosimetry services
1 Scope

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.

This document specifies the criteria and the test procedures to be used for the periodic verification of

the performance of dosimetry services supplying personal and/or area dosemeters.
An area dosemeter can be a workplace dosemeter or an environmental dosemeter.

The performance evaluation can be carried out as a part of the approval procedure for a dosimetry

system or as an independent check to verify that a dosimetry service fulfils specified national or

international type test performance requirements under representative exposure conditions that are

expected or mimic workplace fields from the radiological activities being monitored.

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 dosemeters (for dose measurement) may also be treated according to this document. Then, they

should be treated as if they were passive (i.e. the dosimetry service reads their indicated values and

reports them to the evaluation organization).
2 Normatives 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, 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 6980-1, Nuclear energy — Reference beta-particle radiation — Part 1: Methods of production

ISO 8529-1, Reference neutron radiations — Part 1: Characteristics and methods of production

ISO 12789-1, Reference radiation fields — Simulated workplace neutron fields — Part 1: Characteristics

and methods of production

ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories

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 authority.
© ISO 2018 – All rights reserved 1
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SIST EN ISO 14146:2021
ISO 14146:2018(E)

ISO/TS 18090-1, Radiological protection — Characteristics of reference pulsed radiation — Part 1: Photon

radiation

ISO 29661, Reference radiation fields for radiation protection — Definitions and fundamental concepts

ISO/IEC Guide 98-3, Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in

me a s ur ement (GUM: 1995)

IEC 61267, Medical diagnostic X-ray equipment — Radiation conditions for use in the determination of

characteristics
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 29661 and the following apply.

3.1
approved dosemeter
approved dosimetry system

personal or area dosemeter and associated processing system that has been approved or authorized for

use by the qualification body

Note 1 to entry: Several dosemeters designs can be operated using the same associated processing system

(dosemeter reader, etc.). Then, they are regarded as several dosemeters/dosimetry systems.

3.2
control (background) dosemeter

personal or area dosemeter that provides an estimate of any radiation dose received by the evaluation

sample apart from that given by the irradiating laboratory

Note 1 to entry: The control dosemeter provides a means of estimating and eliminating the contribution to the

dose from background radiation and that received during the time between zeroing and read out, i.e. the dose

during handling, transportation.
3.3
dosemeter
dosimetry system

radiation meter designed to measure quantities such as an absorbed dose or a dose equivalent

Note 1 to entry: In a wider sense, this term is used for meters designed to measure other quantities related to

radiation such as exposure, fluence, etc. Such use is deprecated.

Note 2 to entry: This apparatus may require a separate reader to read out the absorbed dose or dose equivalent.

3.4
dosimetry service

organization that operates a personal and/or area dosimetry system which includes the evaluation of

the reading of dosemeters after their use and includes:
— providing the user with dosemeters;
— recording the results;
— reporting the results to the user.

Note 1 to entry: The dosimetry service fulfils basic quality management and independency requirements if it

fulfils the requirements stated in ISO/IEC 17025.

Note 2 to entry: The user includes not only external clients but also internal personnel who wear dosemeters

provided by their own organization and are engaged in radiation protection activities inside or outside the

organization. The same quality of dosimetry service which is provided to external users is also provided to

organizations' employees (internal users), in accordance with their own quality management system.

2 © ISO 2018 – All rights reserved
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SIST EN ISO 14146:2021
ISO 14146:2018(E)
3.5
evaluation sample

randomly selected representative group of personal or area dosemeters used to evaluate the

performance of a dosimetry service

Note 1 to entry: The evaluation sample includes dosemeters that are irradiated, remain unirradiated or serve as

control dosemeters for the evaluation procedure.
3.6
independent evaluation organization
evaluation organization

independent organization that administers the performance evaluation of dosimetry services and

assesses the results

Note 1 to entry: The evaluation organization may include the irradiating laboratory.

Note 2 to entry: The evaluation organization fulfils basic quality management and independency requirements if

it fulfils the requirements stated in ISO/IEC 17025.
3.7
independent irradiating laboratory
irradiating laboratory

independent laboratory possessing radiation sources, calibration equipment and associated facilities

[all traceable to national (i.e. to primary or secondary) standards] that is able to irradiate dosemeters

from the evaluation sample to a high degree of accuracy
Note 1 to entry: The irradiating laboratory fulfils basic quality management
...

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