SIST EN 62327:2011

Radiation protection instrumentation - Hand-held instruments for the detection and identification of radionuclides and for the indication of ambient dose equivalent rate from photon radiation

This International Standard applies to hand-held instruments used for the detection and identification of radionuclides, the detection of neutron radiation and the indication of the ambient dose equivalent rate from photon radiation. This standard does not apply to the performance of radiation protection instrumentation which is covered in IEC 60846. It is recognized that front line law-enforcement officers, who are generally not radiation experts, may use instruments covered by this standard. This requires user-friendly instrument design and operation with a high degree of inherent safety. This standard specifies requirements for hand-held photon spectrometers, in particular for the detectors, the electronic multi-channel analyzers, the identification software, the radionuclide libraries, and the instrument display. It further specifies general characteristics, general test procedures, radiation characteristics, as well as electrical, mechanical, safety, and environmental characteristics. This standard provides guidelines for selecting suitable radionuclide libraries covering radioactive materials that have been most frequently detected at border crossings. This standard refers to instrumentation which may be used for the purposes described in ISO 22188. This standard may be used for instruments that do not have neutron response capabilities, in which case, neutron response requirements do not apply. This standard does not cover laboratory type, high-resolution photon spectrometers.

Strahlenschutz-Messgeräte - Handgeräte für den Nachweis und die Identifizierung von Radionukliden und die Anzeige der durch Gammastrahlung erzeugten Umgebungs-Äquivalentdosisleistung

Instrumentation pour la radioprotection - Instruments portables pour la détection et l'identification des radionucléides et pour l'indication du débit d'équivalent de dose ambiant pour le rayonnement de photons

Spécifie les exigences pour les spectromètres de photons portables, en particulier pour les détecteurs, les analyseurs électroniques multicanaux, le logiciel d'identification, les bibliothèques de radionucléides et l'écran de l'instrument. De plus, spécifie les caractéristiques générales, les procédures générales d'essai, les caractéristiques de rayonnement, ainsi que les caractéristiques électriques, mécaniques, de sécurité et d'environnement.

Oprema za zaščito pred sevanjem - Ročni instrumenti za odkrivanje in prepoznavanje radionuklidov in za prikaz stopnje ekvivalentne doze v prostoru zaradi fotonskega sevanja

Ta mednarodni standard velja za ročne instrumente, ki se uporabljajo za odkrivanje in prepoznavanje radionuklidov, odkrivanje nevtronskega sevanja in prikaz stopnje ekvivalentne doze v prostoru zaradi fotonskega sevanja. Ta standard ne velja za učinkovitost pripomočkov za zaščito pred sevanjem, ki je zajeta v IEC 60846. Priznava se, da instrumente, ki jih zajema ta standard, lahko uporabljajo obmejni organi pregona, ki v splošnem niso strokovnjaki za sevanje. Zato sta potrebna uporabniku prijazna zasnova in obratovanje instrumentov z visoko stopnjo notranje varnosti. Ta standard določa zahteve za ročne spektrofotometre, predvsem za detektorje, elektronske večkanalne analizatorje, identifikacijsko programsko opremo, knjižnice radionuklidov in zaslon instrumenta. Nadalje določa splošne značilnosti, splošne preskusne postopke, značilnosti sevanja ter električne, mehanske, varnostne in okoljske značilnosti. Ta standard zagotavlja smernice za izbiro ustreznih knjižnic radionuklidov, ki zajemajo radioaktivne materiale, najpogosteje odkrite na mejnih prehodih. Ta standard se nanaša na instrumente, ki se lahko uporabljajo za namen, opisan v ISO 22188. Ta standard se lahko uporablja za instrumente, ki nimajo zmožnosti nevtronskega odziva, in v tem primeru zahteve za nevtronski odziv ne veljajo. Ta standard ne zajema laboratorijskih fotonskih spektrometrov visoke ločljivosti.

General Information

• Status: Withdrawn
• Publication Date: 12-Sep-2011
• Withdrawal Date: 16-Oct-2022
• ICS: 13.280 - Radiation protection
• Technical Committee: I09 - Imaginarni 09
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 14-Oct-2022
• Due Date: 06-Nov-2022
• Completion Date: 17-Oct-2022
• Ref Project: EN 62327:2011 - Radiation protection instrumentation - Hand-held instruments for the detection and identification of radionuclides and for the indication of ambient dose equivalent rate from photon radiation

Relations

• Replaced By: SIST EN IEC 62327:2019 - Radiation protection instrumentation - Hand-held instruments for the detection and identification of radionuclides and for the estimation of ambient dose equivalent rate from photon radiation (IEC 62327:2017)
• Effective Date: 22-Oct-2019
• Revised: SIST EN IEC 62327:2019 - Radiation protection instrumentation - Hand-held instruments for the detection and identification of radionuclides and for the estimation of ambient dose equivalent rate from photon radiation (IEC 62327:2017)
• Effective Date: 25-Dec-2018

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 62327:2011
01-oktober-2011
2SUHPD]D]DãþLWRSUHGVHYDQMHP5RþQLLQVWUXPHQWL]DRGNULYDQMHLQ
SUHSR]QDYDQMHUDGLRQXNOLGRYLQ]DSULND]VWRSQMHHNYLYDOHQWQHGR]HYSURVWRUX
]DUDGLIRWRQVNHJDVHYDQMD
Radiation protection instrumentation - Hand-held instruments for the detection and
identification of radionuclides and for the indication of ambient dose equivalent rate from
photon radiation
Strahlenschutz-Messgeräte - Handgeräte für den Nachweis und die Identifizierung von
Radionukliden und die Anzeige der durch Gammastrahlung erzeugten Umgebungs-
Äquivalentdosisleistung
Instrumentation pour la radioprotection - Instruments portables pour la détection et
l'identification des radionucléides et pour l'indication du débit d'équivalent de dose
ambiant pour le rayonnement de photons
Ta slovenski standard je istoveten z: EN 62327:2011
ICS:
13.280 Varstvo pred sevanjem Radiation protection
SIST EN 62327:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62327:2011

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SIST EN 62327:2011

EUROPEAN STANDARD
EN 62327

NORME EUROPÉENNE
July 2011
EUROPÄISCHE NORM

ICS 13.280


English version


Radiation protection instrumentation -
Hand-held instruments for the detection and identification of
radionuclides and for the indication of ambient dose equivalent rate from
photon radiation
(IEC 62327:2006, modified)


Instrumentation pour la radioprotection -  Strahlenschutz-Messgeräte -
Instruments portables pour la détection et Handgeräte für den Nachweis und die
l'identification des radionucléides et pour Identifizierung von Radionukliden und die
l'indication du débit d'équivalent de dose Anzeige der durch Gammastrahlung
ambiant pour le rayonnement de photons erzeugten Umgebungs-
(CEI 62327:2006, modifiée) Äquivalentdosisleistung
(IEC 62327:2006, modifiziert)





This European Standard was approved by CENELEC on 2011-06-27. CENELEC 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 Central Secretariat or to any CENELEC 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 CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62327:2011 E

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SIST EN 62327:2011
EN 62327:2011 - 2 -

Foreword
The text of the International Standard IEC 62327:2006, prepared by SC 45B, “Radiation protection
instrumentation”, of IEC TC 45, “Nuclear instrumentation”, together with the common modifications prepared
by the Technical Committee CENELEC TC 45B, Radiation protection instrumentation, was submitted to the
CENELEC formal vote and was approved by CENELEC as EN 62327 on 2011-06-27.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights.

The following dates were fixed:

– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2012-06-27

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2014-06-27

Annex ZA has been added by CENELEC.
______________

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SIST EN 62327:2011
- 3 - EN 62327:2011


Endorsement notice

The text of the International Standard IEC 62327:2006 was approved by CENELEC as a European Standard
with agreed common modifications as given below.

COMMON MODIFICATIONS

1 Scope and object
Add at the end of the penultimate paragraph “In which case it shall be clearly identified that the
instrument is for the measurement of photon radiation only.”.
Add a paragraph at the end. ”Conformation with the requirements of this standard does not
guarantee that a radionuclide will always be detected.”.
2 Normative references
Replace in the first paragraph “indispensable for” with “relevant to”.
3 Terms and definitions
3.4 ambient dose equivalent rate indication
Replace the title with “indication of ambient dose equivalent rate”.
3.6 error of indication
Replace “an activity” with “a quantity” and replace “that activity” with “that quantity”.
4 General characteristics of hand-held instruments for the detection and
identification of radionuclides
4.2 Radiation detectors
Replace in the second sentence “shall” with “may”.
4.7 Moisture and dust protection
Replace “see IEC 60529“ with “See 9.5”.
Delete the last paragraph.
4.8 Markings
4.8.2 Exterior markings
Third bullet: Replace “center” with “centre”.
4.11 Spectral storage and display
Add to the start of the last bullet “where the equipment is able to detect neutrons,”.

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SIST EN 62327:2011
EN 62327:2011 - 4 -

Table 1 Reference conditions and standard test conditions
Row two, columns two and three: Replace “S-CS” with “S-Cs” and “4037-1” with “4037-3”.
Row three, column one: Replace “H (10)” with “H*(10)”.
p
6 Radionuclide identification
6.1 Radiation categorization
6.1.1 General
226
Third bullet: Add to the list of industrial radionuclides “ Ra and decay products (radioactive
source),”.
6.2 Identification of single radionuclides
6.2.1 Requirements
226 232
Add in the last bullet after both Ra and Th “(and decay products)”.
6.3 Identifications of mixed radionuclides
6.3.2 Test method
Change the last two sentences to “The test shall consist of 10 or more trials for each combination
of radionuclides. The performance is acceptable if the instrument correctly indicates within 1 min
the combination of radionuclides in at least 90 % of the trials.”.
6.4 Overload characteristics for identification
6.4.1 Requirement
Delete “too low or”.
6.4.2 Test method
Sixth line, replace “state” with “indicate”.
137
Sixth line after “not possible” add “or Cs is continued to be identified. In the latter case increase
the ambient dose equivalent rate slowly until indication that proper identification of is not possible
occurs.”.
Delete the last sentence.
8 Neutron detection
8.1 Neutron indication
8.1.1 Requirement
Start “If the instrument is neutron sensitive the instrument shall….”.
8.1.2 Test method
Delete the first paragraph.
Second paragraph, replace “n/s” with “neutrons per second”.

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SIST EN 62327:2011
- 5 - EN 62327:2011

Add at the end “Remove the neutron source and leave the instrument switched on for one hour.
Insure that there is no more than one neutron alarm, with the alarm setting as recommended by
the manufacturer.”.
9 Electrical and environmental performance requirements
9.1 Stabilization time
9.1.2 Test method
Move the second sentence to a note at the end.
Replace the last sentence with “The requirement is met if the instrument is operational as
determined by having a stable response, for example indicating approximately
-1
1 µSv.h , and being able to perform an identification.”.
9.2 Power supply – battery
9.2.2 Requirement
Replace “10 %” with “± 10 %”.
9.2.3 Test method
Add at the end to the first sentence “or new primary batteries”.
9.5 Moisture and dust protection
9.5.1 Requirement
9.5.1.3 Test method – moisture
2
Delete at the end of the first paragraph, “is 1 min/m of the calculated surface area of the
instrument with a minimum duration of”.
9.9 Electromagnetic compatibility
9.9.2 Electrostatic discharge (ESD)
9.9.2.2 Test method
Begin with “The test shall comply with IEC 61000-4-2.”.
9.9.3 Radio frequency (RF)
9.9.3.1 Requirement
At the end replace “no discharge applied” with “no RF field applied”.
9.9.3.2 Test Method
Replace at the beginning “Place the instrument in an RF controlled environment and expose it to”
241 60
with “The test shall comply with IEC 61000-4-6. Place an Am and Co source in a location that
–1
provides an ambient dose equivalent rate of 0,5 µSv.h (from each source) at the detector and
expose the detector to”.

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SIST EN 62327:2011
EN 62327:2011 - 6 -

Replace the last sentence of the first paragraph with “Perform tests at the radiation frequencies
(20, 22, 24, 26, 29, 32, 35, 38, 42, 46, 51, 56, 62, 68, 75, 80, 90, 100, 110, 120, 130, 140, 150,
160, 180, 200, 220, 240, 260, 290, 320, 350, 380, 420, 460, 510, 560, 620, 680, 750, 820, 900,
1 000) MHz and (1,4; 1,5; 1,6; 1,8; 2,0; 2,2; 2,4, 2,5) GHz.”.
 Delete the first sentence of the second paragraph: “If susceptibilities … frequencies.”.
9.9.4 Radiated RF emissions
9.9.4.2 Test method
Begin with “The test shall comply with IEC 61000-4-3.”.
9.9.5 Conducted disturbances
9.9.5.1 Requirement
Change “onto” to “to”.
9.9.5.2 Test method
Replace the second sentence of the first paragraph with “Perform tests at the radiation frequencies
(150, 160, 180, 200, 220, 240, 260, 290, 320, 350, 380, 420, 460, 510, 560, 620, 680, 750, 820,
900, 1 000) kHz and (1,0; 1,1; 1,2; 1,3; 1,4; 1,5; 1,6; 1,8; 2,0; 2,2; 2,4; 2,6; 2,9; 3,2; 3,5; 3,8; 4,2;
4,6; 5,1; 5,6; 6,2; 6,8; 7,5; 8,0; 9,0; 10; 11; 12;13; 14; 15; 16; 18; 20; 22; 24; 26; 29; 32; 35; 38; 42;
46; 51; 56; 62; 68; 75, 80) MHz.”.
 Delete the third sentence.
Replace in the fourth sentence “should be” with “shall be”.
9.9.6 Magnetic fields
9.9.6.1 Requirement
Change text to “The instrument shall be fully functional when exposed to d.c. magnetic fields in
-1
three orientations mutually at right angles to a 10 Gauss (about 800 A m in vacuum) magnetic
field.
9.9.6.2 Test method
Delete the second sentence.
Replace the third sentence with “No additional alarms shall be activated and the two radionuclides
shall be correctly identified and the indicated ambient dose equivalent rate shall remain within
± 20 % of the initial indicated value. The test shall be carried out in three orientations mutually at
right angles.”.
Bibliography
Third entry: Update to ”IEC 61000-4-2:2008” and delete the amendments.
Fourth entry: Update to “IEC 61000-4-3:2006" and delete the amendment.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60068-2-27:1987 NOTE  Harmonized as EN 60068-2-27:1993 (not modified).
IEC 60086-1:2000 NOTE  Harmonized as EN 60086-1:2001 (not modified).
IEC 61000-4-2:1995 NOTE  Harmonized as EN 61000-4-2:1995 + A1:1998 + A2:2001 (not modified).
+ A1:1998
+ A2:2000

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SIST EN 62327:2011
- 7 - EN 62327:2011

IEC 61000-4-3:2002 NOTE  Harmonized as EN 61000-4-3:2002 + A1:2002 (not modified).
+ A1:2002
IEC 61000-4-6:2003 NOTE  Harmonized as EN 61000-4-6:2007 (not modified).
+ A1:2004
IEC 61000-4-8:1993 NOTE  Harmonized as EN 61000-4-8:1993 + A1:2001 (not modified).
+ A1:2000

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SIST EN 62327:2011
EN 62327:2011 - 8 -


Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year

IEC 60050-393 2003 International Electrotechnology Vocabulary - - -
Part 393: Nuclear instrumentation - Physical
phenomena and basic concepts


IEC 60050-394 1995 International Electrotechnical Vocabulary - - -
+ A1 1996 Chapter 394: Nuclear instrumentation: - -
+ A2 2000 Instruments - -


IEC 60529 1989 Degrees of protection provided by enclosures EN 60529 1991
+ A1 1999 (IP Code) + corr. May 1993
+ A1 2000


IEC 60846 (mod) 2002 Radiation protection instrumentation - Ambient EN 60846 2004
and/or directional dose equivalent (rate) meters
and/or monitors for beta, X and gamma
radiation


IEC 61187 (mod) 1993 Electrical and electronic measuring equipment - EN 61187 1994
Documentation + corr. March 1995


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 8529-1 2001 Reference neutron radiations - - -
Part 1: Characteristics and methods of
production


ISO 8529-2 2000 Reference neutron radiations - - -
Part 2: Calibration fundamentals of radiation
protection devices related to the basic
quantities characterizing the radiation field


ISO 22188 2004 Monitoring for inadvertent movement and illicit - -
trafficking of radioactive material


International Bureau 1998 The international System of Units (SI) - -
of Weights and
Measures

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SIST EN 62327:2011
NORME CEI
INTERNATIONALE
IEC



62327
INTERNATIONAL


Première édition
STANDARD

First edition

2006-02


Instrumentation pour la radioprotection –
Instruments portables pour la détection et
l'identification des radionucléides et pour
l'indication du débit d'équivalent de dose
ambiant pour le rayonnement de photons

Radiation protection instrumentation –
Hand-held instruments for the detection and
identification of radionuclides and for the
indication of ambient dose equivalent rate
from photon radiation

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Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

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SIST EN 62327:2011
62327  IEC:2006 – 3 –
CONTENTS
FOREWORD.7
INTRODUCTION.11

1 Scope and object.13
2 Normative references .13
3 Terms and definitions .15
4 General characteristics of hand-held Instruments for the detection and
identification of radionuclides .19
4.1 General .19
4.2 Radiation detectors .19
4.3 Energy calibration .19
4.4 Software.19
4.5 User interface.19
4.6 Communication interface .21
4.7 Moisture and dust protection .21
4.8 Markings .21
4.9 Battery status Indication .21
4.10 Protection of switches .21
4.11 Spectral storage and display .21
4.12 Ambient dose equivalent rate indication .23
5 General test procedures .23
5.1 Nature of tests.23
5.2 Reference conditions and standard test conditions .23
5.3 Statistical fluctuations .25
6 Radionuclide identification.25
6.1 Radionuclide categorization .25
6.2 Identification of single radionuclides.27
6.3 Identification of mixed radionuclides.29
6.4 Overload characteristics for identification .29
6.5 Source indicator .29
7 Ambient dose equivalent rate indication .31
7.1 Relative intrinsic error .31
7.2 Alarm and response time.31
7.3 Over range characteristics for ambient dose equivalent rate indication.31
8 Neutron detection .33
8.1 Neutron indication .33
8.2 Neutron indication in the presence of photons .33
9 Electrical and environmental performance requirements .33
9.1 Stabilization time.33
9.2 Power supplies – battery .35
9.3 Vibration.35
9.4 Mechanical shock.37
9.5 Moisture and dust protection .37
9.6 Ambient temperature influence .39
9.7 Temperature shock.39

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SIST EN 62327:2011
62327  IEC:2006 – 5 –
9.8 Relative humidity.41
9.9 Electromagnetic compatibility .43
9.10 Storage and transport.47
10 Documentation .47
10.1 Certificate .47
10.2 Operation and maintenance manual .47
11 Summary of the tests (see Tables 4 to 6) .47

Bibliography.51

Table 1 – Reference conditions and standard test conditions .25
Table 2 – Vibration and shock test levels .37
Table 3 – Radiated emission limits.45
Table 4 – Requirements for radionuclide identification.47
Table 5 – Requirements for photon ambient dose equivalent rate indication .49
Table 6 – Electrical and environmental performance requirements .49

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SIST EN 62327:2011
62327  IEC:2006 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

RADIATION PROTECTION INSTRUMENTATION –
HAND-HELD INSTRUMENTS FOR THE DETECTION AND
IDENTIFICATION OF RADIONUCLIDES AND FOR THE INDICATION
OF AMBIENT DOSE EQUIVALENT RATE FROM PHOTON RADIATION


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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 62327 has been prepared by subcommittee 45B: Radiation
protection instrumentation, of IEC technical committee 45: Nuclear Instrumentation.
The text of this standard is based on the following documents:
FDIS Report on voting
45B/486/FDIS 45B/488/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.

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SIST EN 62327:2011
62327  IEC:2006 – 9 –
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result 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.

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SIST EN 62327:2011
62327  IEC:2006 – 11 –
INTRODUCTION
Illicit and inadvertent movement of radioactive materials in the form of radiation sources and
contaminated metallurgical scrap have become a problem of increasing importance.
Radioactive sources out of regulatory control, so-called “orphan sources”, have frequently
caused serious radiation exposures and wide spread contamination. Although illicit trafficking
in nuclear and other radioactive materials is not a new phenomenon, concern about a nuclear
“black market” has increased in the last few years particularly in view of its terrorist potential.
In response to the technical policy of the International Atomic Energy Agency (IAEA), the
World Customs Organization (WCO) and the International Criminal Police Organization
(Interpol) related to the detection and identification of special nuclear materials and security
trends, nuclear instrumentation companies are developing and manufacturing radiation
instrumentation to assist in the detection of illicit movement of radioactive and special nuclear
materials. This type of instrumentation is widely used for security purposes at nuclear
facilities, border control posts, and international seaports and airports. However, to ensure
that measurement results made at different locations are consistent it is imperative that
radiation instrumentation be designed to rigorous specifications based upon agreed
performance requirements stated in this International Standard.

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SIST EN 62327:2011
62327  IEC:2006 – 13 –
RADIATION PROTECTION INSTRUMENTATION –
HAND-HELD INSTRUMENTS FOR THE DETECTION
AND IDENTIFICATION OF RADIONUCLIDES AND FOR THE INDICATION
OF AMBIENT DOSE EQUIVALENT RATE FROM PHOTON RADIATION



1 Scope and object
This International Standard applies to hand-held instruments used for the detection and
identification of radionuclides, the detection of neutron radiation and the indication of the
ambient dose equivalent rate from photon radiation. This standard does not apply to the
performance of radiation protection instrumentation which is covered in IEC 60846.
It is recognized that front line law-enforcement officers, who are generally not radiation
experts, may use instruments covered by this
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