IEC 60532:2010

IEC 60532 ®
Edition 3.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Radiation protection instrumentation – Installed dose rate meters, warning
assemblies and monitors – X and gamma radiation of energy between 50 keV
and 7 MeV
Instrumentation pour la radioprotection – Débitmètres à poste fixe, ensembles
d'alarmes et moniteurs – Rayonnements X et gamma d'énergie comprise entre
50 keV et 7 MeV
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or
IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

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
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: inmail@iec.ch
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: csc@iec.ch
Tel.: +41 22 919 02 11
Fax: +41 22 919 03 00
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
ƒ Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
ƒ Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
ƒ Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: csc@iec.ch
Tél.: +41 22 919 02 11
Fax: +41 22 919 03 00
IEC 60532 ®
Edition 3.0 2010-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Radiation protection instrumentation – Installed dose rate meters, warning
assemblies and monitors – X and gamma radiation of energy between 50 keV
and 7 MeV
Instrumentation pour la radioprotection – Débitmètres à poste fixe, ensembles
d'alarmes et moniteurs – Rayonnements X et gamma d'énergie comprise entre
50 keV et 7 MeV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
X
CODE PRIX
ICS 13.280 ISBN 978-2-88912-171-7
– 2 – 60532 © IEC:2010
CONTENTS
FOREWORD.5
INTRODUCTION.7
1 Scope and object.10
2 Normative references .11
3 Terms and definitions .13
4 Design requirements .15
4.1 General characteristics.15
4.1.1 Overview .15
4.1.2 Measurement range.15
4.1.3 Safety classification.15
4.2 Detailed characteristics .16
4.2.1 Equipment configuration .16
4.2.2 Equipment reliability .16
4.2.3 Equipment indication .17
4.2.4 Alarm/trip/interlock facilities.18
5 General test procedures .19
5.1 Nature of tests.19
5.2 Reference conditions and standard test conditions .19
5.3 Tests performed under standard test conditions .19
5.4 Tests performed with variation of influence quantities.19
5.5 Statistical fluctuations .20
5.6 Reference radiation .20
5.6.1 Gamma .20
5.6.2 Beta .20
5.6.3 Neutron .20
5.7 Consideration of natural background radiation.20
6 Radiation characteristics .20
6.1 False alarm test .20
6.1.1 Requirements .20
6.1.2 Method of test .20
6.2 Point of test.21
6.3 Linearity .21
6.3.1 Requirements .21
6.3.2 Test source of gamma radiation.21
6.4 Variation of response with photon radiation energy .22
6.4.1 Requirements .22
6.4.2 Method of test .22
6.5 Variation of response with angle of incidence .23
6.5.1 Requirements .23
6.5.2 Method of test .23
6.6 Response to beta radiation.24
6.6.1 Requirements .24
6.6.2 Method of test .24
6.7 Response to neutron radiation.24
6.7.1 Requirements .24
6.7.2 Method of test .24

60532 © IEC:2010 – 3 –
6.8 Overload characteristics .25
6.8.1 Requirements .25
6.8.2 Method of test .25
6.9 Statistical fluctuations .25
6.9.1 Requirements .25
6.9.2 Method of test .26
6.10 Response time .26
6.10.1 Requirements .26
6.10.2 Method of test .26
6.11 Zero drift .27
6.11.1 Requirements .27
6.11.2 Method of test .27
6.12 Alarm requirements .27
6.12.1 Requirements .27
6.12.2 Method of test .27
6.12.3 Equipment fault alarms .27
6.13 Alarm response time and stability.28
6.13.1 Requirements .28
6.13.2 Method of test .28
6.14 Warm-up .28
6.14.1 Requirements .28
6.14.2 Method of test .28
7 Electrical, mechanical and environmental characteristics.28
7.1 Mains operation.28
7.1.1 Requirements .28
7.1.2 Method of test .29
7.2 Electromagnetic compatibility (EMC) .29
7.2.1 General .29
7.2.2 Emission of electromagnetic radiation.29
7.2.3 Electrostatic discharge .29
7.2.4 General radiated electromagnetic fields.30
7.2.5 Conducted disturbances induced by fast transients or bursts.30
7.2.6 Conducted disturbances induced by surges .31
7.2.7 Conducted disturbances induced by radio-frequencies .31
7.2.8 Ring wave immunity.31
7.2.9 50 Hz/60 Hz magnetic field.32
7.2.10 Voltage dips and short interruptions .32
7.3 Mechanical characteristics .33
7.3.1 Areas of application.33
7.3.2 Microphonics/impact.33
7.4 Environmental characteristics.33
7.4.1 Ambient temperature .33
7.4.2 Relative humidity.34
7.4.3 Sealing .34
8 Documentation .35
8.1 Type test report.35
8.2 Certificate .35
8.3 Operation and maintenance manual .35
Annex A (informative) Monitoring of pulsed ionizing radiation .39

– 4 – 60532 © IEC:2010
Bibliography.40

Figure 1 – Example of the rotation of the detection assembly.24

Table 1 – IEC SC 45A/SC 45B standards series .8
Table 2 – Emission frequency range .29
Table 3 – Reference conditions and standard test conditions .36
Table 4 – Tests performed under standard test conditions .37
Table 5 – Tests performed with variations of influence quantities.37
Table 6 – Maximum values of additional indications due to electromagnetic
disturbances .38

60532 © IEC:2010 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RADIATION PROTECTION INSTRUMENTATION –
INSTALLED DOSE RATE METERS, WARNING ASSEMBLIES
AND MONITORS –
X AND GAMMA RADIATION OF ENERGY BETWEEN 50 keV AND 7 MeV

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60532 has been prepared by subcommittee 45B: Radiation
protection instrumentation, of IEC technical committee 45: Nuclear instrumentation.
This third edition cancels and replaces the second edition, published in 1992, and constitutes
a technical revision.
The main technical changes with regard to the previous edition are as follows:
– the document has been updated to take account of the requirements of IEC standards
published since 1996.
– 6 – 60532 © IEC:2010
The text of this standard is based on the following documents:
FDIS Report on voting
45B/655/FDIS 45B/670/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be:
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
60532 © IEC:2010 – 7 –
INTRODUCTION
a) Technical background, main issues and organization of the standard
This International Standard specifically focuses on radiation monitoring systems used for
normal and incident conditions.
This standard is intended for use by purchasers in developing specifications for their plant
specific radiation monitoring systems and by manufacturers to identify needed product
characteristics when developing systems for normal and incident conditions. Some specific
instrument characteristics such as measurement range, required energy response and
ambient environment requirements will depend upon the specific application. In such cases,
guidance is provided on determining the specific requirements, but specific requirements
themselves are not stated except as typical examples given in informative annexes.
This standard is one associated with a series of standards which cover post accident radiation
monitors important to safety in nuclear power plants. The full series is comprised of the
following standards:
IEC 60951-1 – Nuclear power plants – Instrumentation important to safety – Radiation
monitoring for accident and post-accident conditions – Part 1: General
requirements
IEC 60951-2 – Nuclear power plants – Instrumentation important to safety – Radiation
monitoring for accident and post-accident conditions – Part 2: Equipment
for continuous off-line monitoring of radioactivity in gaseous effluents and
ventilation air
IEC 60951-3 – Nuclear power plants – Instrumentation important to safety – Radiation
monitoring for accident and post-accident conditions – Part 3: Equipment
for continuous high range area gamma monitoring
IEC 60951-4 – Nuclear power plants – Instrumentation important to safety – Radiation
monitoring for accident and post-accident conditions – Part 4: Equipment
for continuous in-line or on-line monitoring of radioactivity in process
stream
b) Situation of the current standard in the structure of the IEC SC 45A/SC 45B
standard series
IEC 60951 series of standards are at the third level in the hierarchy of SC 45A standards.
They provide guidance on the design and testing of radiation monitoring equipment used for
accident and post accident conditions. Other standards developed by SC 45A and SC 45B
provide guidance on instruments used for monitoring radiation as part of normal operations.
The IEC 60761 series provides requirements for equipment for continuous off-line monitoring
of radioactivity in gaseous effluents in normal conditions. IEC 60861 provides requirements
for equipment for continuous off-line monitoring of radioactivity in liquid effluents in normal
conditions. IEC 60768 provides requirements for equipment for continuous in-line and on-line
monitoring of radioactivity in process stream in normal and incident conditions. Finally,
ISO 2889 gives guidance on gas and particulate sampling. The relationship between these
various radiation monitoring standards is given in Table 1:

– 8 – 60532 © IEC:2010
Table 1 – IEC SC 45A/SC 45B standards series
Developer ISO SC 45A – Process and safety SC 45B – Radiation
monitoring protection and effluents
monitoring
Scope Sampling Accident and post Normal and
circuits accident incident
and conditions conditions
methods
Gas, particulate and ISO 2889 IEC 60951-1 and IEC 60761 series
iodine with sampling IEC 60951-2
(OFF LINE)
Liquid with sampling N/A N/A IEC 60861
(OFF LINE)
Process stream N/A IEC 60951-1 and IEC 60768 N/A
(gaseous effluents, IEC 60951-4
steam or liquid)
without sampling
(ON or IN-LINE)
Area monitoring N/A IEC 60951-1 and IEC 60532
IEC 60951-3
Central system N/A IEC 61504 IEC 61559 (all parts)

c) Recommendations and limitations regarding the application of the standard
It is important to note that this standard establishes no additional functional requirements for
safety systems.
d) Description of the structure of the IEC SC 45A/SC 45B standard series and
relationships with other IEC standards and other bodies’ documents (IAEA, ISO)
The IEC 61508 series defines the requirements for an overall safety life-cycle framework and
a system life-cycle framework. The IEC 61508 series should be complied with when
developing instruments with safety functions for radiation monitoring outside the nuclear
power plant sector whilst complying with the requirements defined in this standard.
The top-level standard of the IEC SC 45A standard series is IEC 61513. It provides general
requirements for instrumentation and control systems and equipment that are used to perform
functions important to safety in nuclear power plants. IEC 61513 structures the IEC SC 45A

standard series.
IEC 61513 refers directly to other IEC SC 45A standards for general topics related to the
categorization of functions and classification of systems, qualification, separation of systems,
defence against common cause failure, software aspects of computer-based systems,
hardware aspects of computer-based systems, and control room design. The standards
referenced directly at this second level should be considered together with IEC 61513 as a
consistent document set.
At a third level, IEC SC 45A/SC 45B standards not directly referenced by IEC 61513 are
standards related to specific equipment, technical methods or specific activities. Usually,
these documents, which make reference to second-level documents for general topics, can be
used on their own.
A fourth level extending the IEC SC 45/SC 45B standard series, corresponds to the technical
reports which are not normative.
IEC 61513 has adopted a presentation format similar to the basic safety publication.

60532 © IEC:2010 – 9 –
The IEC 61508 series, with an overall safety life-cycle framework and a system life-cycle
framework, provides an interpretation of the general requirements for the nuclear power plant
sector (see IEC 61508-1, IEC 61508-2 and IEC 61508-4). Compliance with IEC 61513 will
facilitate consistency with the requirements of the IEC 61508 series as they have been
interpreted for the nuclear industry. In this framework, IEC 60880 and IEC 62138 correspond
to IEC 61508-3 for the nuclear application sector.
IEC 61513 refers to ISO as well as to IAEA 50-C-QA (now replaced by IAEA 50-C/SG-Q) for
topics related to quality assurance (QA).
The IEC SC 45A standard series consistently implement and detail the principles and basic
safety aspects provided in the IAEA code on the safety of nuclear power plants (NPPs) and in
the IAEA safety series, in particular the requirements of Safety Guide NS-R-1, establishing
safety requirements related to the design of nuclear power plants, and Safety Guide NS-G-1.3
dealing with instrumentation and control systems important to safety in nuclear power plants.
The terminology and definitions used by SC 45A standards are consistent with those used by
the IAEA.
– 10 – 60532 © IEC:2010
RADIATION PROTECTION INSTRUMENTATION –
INSTALLED DOSE RATE METERS, WARNING ASSEMBLIES
AND MONITORS –
X AND GAMMA RADIATION OF ENERGY BETWEEN 50 keV AND 7 MeV

1 Scope and object
This International Standard applies to installed dose rate meters, warning assemblies and
monitors that are used to prevent or mitigate a minor radioactive release, or minor
degradation of fuel, within the nuclear power plants /nuclear facility design basis, and to warn
personnel or to ensure their safety during or following events that involve or result in release
of radioactivity in the nuclear power plants (NPP) /nuclear facility (NF), or risk of radiation
exposure. This equipment is typically classified as category “A” or “B” or “C” or “not classified”
in IEC 61226.
It covers equipment intended to isotropically measure air kerma, ambient dose equivalent or
other exposure quantities due to X or gamma radiation of energy between 50 keV and 7 MeV.
The equipment is intended primarily for the purpose of radiological protection, and may play
an auxiliary or indirect role in the achievement or maintenance of nuclear plant safety.
Instruments measuring over a more limited energy range fall within the scope of this standard
provided they cover at least the range of 80 keV to 1,5 MeV.
Assemblies of this type are commonly defined as area radiation monitors. They are normally
employed to determine continuously the radiological situation in working areas in which the
radiation field may change with time, for example nuclear power plants, particle accelerators,
high active laboratories, fuel reprocessing plants, and to provide alarms when the radiation
field goes outside predetermined limits. They are also employed to act in safety related
protection systems, such as personnel access control systems which allow access to areas
which can be subject to radiation fields.
This standard also gives guidance applicable to equipment for use in pulsed radiation fields,
for example, those emanating from pulsed radiation or particle accelerators. This guidance is
important, since the operation of the majority of the equipment defined by this standard in
pulsed fields will give false readings.
The assemblies considered in this standard comprise at least:
• a detector assembly (e.g, ionization chamber, Geiger-Muller tube, scintillation counters,
semiconductors);
• a measuring assembly, which may be fitted into a centralized panel which, in the case of
warning assemblies and monitors, provides signal outputs and contacts capable of
activating alarm or trip/interlock circuits for the purpose of radiation protection.
This standard is also applicable to installed dose rate measuring assemblies designed for
special applications (e.g. very high dose rates). However, some of the requirements may need
to be amended or supplemented according to the particular characteristics of such
assemblies.
This standard is not applicable to criticality monitors.
Assemblies designed to perform combined functions should comply with the requirements
pertaining to each of these functions.

60532 © IEC:2010 – 11 –
This standard specifies general characteristics, general test procedures, radiation, electrical,
safety, and environmental characteristics and the identification certificate for the assemblies
defined above.
2 Normative references
The following referenced documents are indispensable for the application 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.
IEC 60038, IEC standard voltages
IEC 60050-151:2001, International Electrotechnical Vocabulary – Part 151: Electrical and
magnetic devices
IEC 60050-393:2003, International Electrotechnical Vocabulary – Part 393: Nuclear
instrumentation – Physical phenomena and basic concepts
IEC 60050-394:2007, International Electrotechnical Vocabulary – Part 394: Nuclear
instrumentation – Instruments, systems, equipment and detectors
IEC 60068-2-18, Environmental testing – Part 2-18: Tests – Test R and guidance: Water
IEC 60068-2-27:2008, Environmental testing – Part 2-27: Tests – Test Ea and guidance:
Shock
IEC 60068-2-75, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC 60780, Nuclear power plants – Electrical equipment of the safety system – Qualification
IEC 60880, Nuclear power plants – Instrumentation and control systems important to safety –
Software aspects for computer-based systems performing category A functions
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measuring
techniques – Electrostatic discharge test
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measuring
techniques – Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4:2004, Electromagnetic compatibility (EMC) – Part 4-4: Testing and measuring
techniques – Electrical fast transient (burst immunity) test
IEC 61000-4-5:2005, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measuring
techniques – Surge immunity test
IEC 61000-4-6:2008, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measuring
techniques – Immunity to conducted disturbances induced by radio-frequency fields
IEC 61000-4-8, Electromagnetic compatibility (EMC) – Part 4-8: Testing and measurement
techniques – Power frequency magnetic field immunity test
IEC 61000-4-11, Electromagnetic compatibility (EMC) – Part 4-11: Testing and measurement
techniques – Voltage dips, short interruptions and voltage variations immunity tests

– 12 – 60532 © IEC:2010
IEC 61000-4-12, Electromagnetic compatibility (EMC) – Part 4-12: Testing and measurement
techniques – Ring wave immunity test
IEC 61000-6-2, Electromagnetic compatibility (EMC) – Part 6-2: Generic standards –
Immunity for industrial environments
IEC 61000-6-4, Electromagnetic compatibility (EMC) – Part 6-4: Generic standards –
Emission standard for industrial environments
IEC 61187:1993, Electrical and electronic measuring equipment – Documentation
IEC 61226:2009, Nuclear power plants – Instrumentation and control important to safety –
Classification of instrumentation and control functions
IEC 61504, Nuclear power plants – Instrumentation and control systems important to safety –
Plant-wide radiation monitoring
IEC 61508 (all parts), Functional safety of electrical/electronic/programmable electronic
safety-related systems
IEC 61513:2001, Nuclear power plants – Instrumentation and control for systems important to
safety – General requirements for systems
IEC 62138, Nuclear power plants – Instrumentation and control important for safety –
Software aspectrs for computer-based systems performing category B or C functions
IEC 62262, Degrees of protection provided by enclosures for electrical equipment against
external mechanical impacts (IK code)
ISO 2889, Sampling airborne radioactive materials from the stacks and ducts of nuclear
facilities
ISO 4037-1:1996, 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 4037-2:1997, 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 4037-3:1999, 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 4037-4:2004, X and gamma reference radiation for calibrating dosemeters and doserate
meters and for determining their response as a function of photon energy – Part 4: Calibration
of area and personal dosemeters in low energy X reference radiation fields
ISO 6980-1:2006, Nuclear energy – Reference beta-particle radiation – Part 1: Methods of
production
ISO 6980-2:2004, Nuclear energy – Reference beta-particle radiation – Part 2: Calibration
fundamentals related to basic quantities characterizing the radiation field

60532 © IEC:2010 – 13 –
ISO 6980-3:2006, 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 8529-1:2001, Neutron reference radiations – Part 1: Characteristics and methods of
production
ISO 8529-2:2000, Reference neutron radiations – Part 2: Calibration of radiation protection
devices related to the basic quantities characterizing the radiation field
ISO 8529-3:1998, Reference neutron radiations – Part 3: Calibration of area and personal
dosemeters and determination of response as a function of energy and angle of incidence
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
General terminology concerning detection and measurement of ionizing radiation and nuclear
instrumentation is given in IEC 60050-393, IEC 60050-394, and IEC 60050-151.
NOTE Degrees of requirement: In this standard, requirements are defined as follows:
– the word "shall" signifies a mandatory requirement (where appropriate a qualifying statement is included when
there may be allowable exceptions);
– the word "should" indicates requirements that are not mandatory for compliance with the standard but are
strongly recommended;
– the word "may" signifies an acceptable method or an example of good practice.
3.1
manufacturer
designer and seller of the equipment
3.2
purchaser
user (operator) of the equipment
3.3
detector assembly
DA
component of the installed radiation monitor system that contains the detectors and
associated electronic devices; it can also include programmable electronic circuits
3.4
processing assembly
PA
assembly (which can be associated with one or more detector assemblies) which converts
the output signal from the detector assemblies into a form, generally digital, suitable for
transmission down a data link to the central computer, centralizer, and/or which generates
alarm outputs to the alarm units at preset signal levels
3.5
alarm assembly
AA
assembly that will initiate an audible or visible alarm normally local to the DA in the event of
an alarm threshold being breached or in case of fault of the equipment

– 14 – 60532 © IEC:2010
3.6
centralizer
CC
central processing computer system for the calculation, display, and storage of data from the
processing assembly
3.7
monitoring assembly
MA
combination of processing, alarm, and detector assemblies
3.8
order of magnitude
range of measurement or the levels to be measured which differ by about a factor of ten for
one order of magnitude, one hundred for two, a thousand for three and so on
3.9
priming source
very small radioactive source, if used, mounted in or in close proximity to the detector(s), the
source being there to ensure that the low level alarm will not normally alarm unless there is a
fault
3.10
conventionally true dose rate
best estimate of the true dose rate used for calibration of equipment; this value and its
uncertainty to be determined from a secondary or primary standard, or by a reference
instrument which has been calibrated against a secondary or primary standard
3.11
coefficient of variation
ratio of the estimate of the standard deviation, s to the arithmetic mean of a set of n
x
measurements x , given by the following formula:
i
n
s 1 1
V = = ()x – x
∑ i
x x n – 1
3.12
test nomenclature
3.12.1
qualification tests
tests performed on a representative sample of equipment to verify the adequacy of the design
and that the equipment meets the specifications agreed upon between manufacturer and user
under normal, operational conditions and anticipated operation occurrences
NOTE 1 Qualification tests are performed in order to verify that the requirements of a specification are fulfilled.
NOTE 2 Qualification tests are subdivided into type tests and routine tests.
3.12.2
type test
conformity test made on one or more items representative of the production
[IEC 60050-151:2001, 151-16-16], [IEC 60050-394:2007, 394-40-02]
3.12.3
routine test
conformity test made on each individual item during or after manufacture

60532 © IEC:2010 – 15 –
[IEC 60050-151:2001, 151-16-17], [IEC 60050-394:2007, 394-40-03]
3.12.4
acceptance test
contractual test to prove to the customer that the device fulfils certain specifications
[IEC 60050-151:2001, 151-16-23, modified], [IEC 60050-394:2007, 394-40-05]
3.12.5
supplementary tests
tests intended to provide supplementary information on certain characteristics of the
assemblies
NOTE The term “dose rate” used in this standard shall mean the quantity, e.g, air kerma, that the instrument is
intended to measure. The radiation tests are defined by the manufacturer in terms of this quantity.
4 Design requirements
4.1 General characteristics
4.1.1 Overview
Equipment may be designed as a single assembly (monitoring assembly) with the detector
assembly adjacent to or contained within the monitoring assembly or the detector remote from
the remaining equipment.
The detector assembly (detector and associated electronics) may be located remotely from
any processing assembly (electronics) and the indication and alarm assembly.
It is desirable that all these options are provided by a single common design of equipment,
and for the design to allow for the use of alternative types of detectors with the same
indication and alarm assemblies.
4.1.2 Measurement range
The equipment shall measure the dose rate due to X or gamma rays over an energy range of
at least 80 keV to 1,5 MeV. Effective response to energies outside this range down to 50 keV
and up to 7 MeV may be specified. The range of the equipment shall be at least three orders
of magnitude of dose rate; five or more orders of magnitude may be required in some
applications.
4.1.3 Safety classification
The equipment covered in this standard is intended primarily for the purpose of radiological
protection and, as defined in 5.3 of IEC 61226:2009 may be installed in facilities such as
nuclear power plants, nu
...