EN ISO 14146:2024

Radiological protection - Criteria and performance limits for the periodic evaluation of dosimetry services for external radiation (ISO 14146:2024)

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.

Strahlenschutz - Kriterien und Mindestanforderungen bei der wiederkehrenden Überprüfung von Dosismessstellen (ISO 14146:2024)

Radioprotection - Critères et limites de performance pour l’évaluation périodique des services de dosimétrie pour le rayonnement externe (ISO 14146:2024)

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.

Radiološka zaščita - Merila in meje učinkovitosti za periodično ovrednotenje dozimetričnih storitev za zunanje sevanje (ISO/FDIS 14146:2024)

General Information

• Status: Not Published
• Publication Date: 16-Jul-2024
• ICS: 13.280 - Radiation protection
• Technical Committee: CEN/TC 430 - Nuclear energy, nuclear technologies, and radiological protection
• Drafting Committee: CEN/TC 430 - Nuclear energy, nuclear technologies, and radiological protection
• Current Stage: 6055 - CEN Ratification completed (DOR) - Publishing
• Start Date: 06-Jul-2024
• Completion Date: 06-Jul-2024
• Ref Project: kSIST FprEN ISO 14146:2024 - Radiological protection - Criteria and performance limits for the periodic evaluation of dosimetry services for external radiation (ISO/FDIS 14146:2024)

Relations

• Revises: EN ISO 14146:2021 - Radiological protection - Criteria and performance limits for the periodic evaluation of dosimetry services (ISO 14146:2018)
• Effective Date: 06-Jul-2022

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 14146:2023
01-oktober-2023
Radiološka zaščita - Merila in meje učinkovitosti za periodično ovrednotenje
dozimetričnih storitev (ISO/DIS 14146:2023)
Radiological protection - Criteria and performance limits for the periodic evaluation of
dosimetry services (ISO/DIS 14146:2023)
Strahlenschutz - Kriterien und Mindestanforderungen bei der wiederkehrenden
Überprüfung von Dosismessstellen (ISO/DIS 14146:2023)
Radioprotection - Critères et limites de performance pour l'évaluation périodique des
services de dosimétrie (ISO/DIS 14146:2023)
Ta slovenski standard je istoveten z: prEN ISO 14146
ICS:
13.280 Varstvo pred sevanjem Radiation protection
oSIST prEN ISO 14146:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 14146:2023
oSIST prEN ISO 14146:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 14146
ISO/TC 85/SC 2 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2023-08-11 2023-11-03
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
ICS: 13.280
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
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NATIONAL REGULATIONS.
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PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

oSIST prEN ISO 14146:2023
ISO/DIS 14146:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 14146
ISO/TC 85/SC 2 Secretariat: AFNOR
Voting begins on: Voting terminates on:

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
ICS: 13.280
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2023
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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NATIONAL REGULATIONS.
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ii
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oSIST prEN ISO 14146:2023
ISO/DIS 14146:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Quantities measured .7
5 Frequency of evaluation.8
6 Test conditions .8
6.1 Standard test conditions and special handling conditions . 8
6.2 Radiation qualities . 9
6.3 Dose range . 10
6.4 Irradiation of dosemeters . 10
7 Performance limits . .11
7.1 Limits to the response . 11
7.1.1 General requirements . 11
7.1.2 Requirements at reference conditions . 11
7.2 Approval criterion . 12
8 Operational procedures .12
8.1 Evaluation sample size .12
8.2 Evaluation procedure .12
8.3 Evaluation sequence .12
9 Test report .13
Annex A (normative) Reference conditions and standard test conditions .15
Annex B (informative) Graphical illustrations of the performance limits .17
Bibliography .19
iii
oSIST prEN ISO 14146:2023
ISO/DIS 14146:2023(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 https://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 third edition of ISO 14146 cancels and replaces the second edition (ISO 14146:2018) of which
it constitutes a technical revision. The main changes with respect to the previous edition are the
addition and clarification of several definitions, the modification of the requirements to environmental
dosemeters and the addition of a requirement at reference conditions.
iv
oSIST prEN ISO 14146:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 14146:2023(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
1)
(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 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
workplace and/or environmental dosemeters.
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.
In this document, the corrected indicated 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 for the quantity air kerma, K , or absorbed dose, D, may also be treated
a
according to this document. All dose values stated in Sv shall then be interpreted as equivalent values
in Gy.
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, 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
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
...