IEC 62694:2022

IEC 62694
®

Edition 2.0 2022-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside


Radiation protection instrumentation – Backpack-type radiation detector (BRD)
for the detection of illicit trafficking of radioactive material

Instrumentation pour la radioprotection – Détecteur de rayonnement de type sac
à dos (BRD) pour la détection du trafic illicite des matières radioactives

IEC 62694:2022-11(en-fr)

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IEC 62694

®


Edition 2.0 2022-11




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE
colour

inside










Radiation protection instrumentation – Backpack-type radiation detector (BRD)

for the detection of illicit trafficking of radioactive material



Instrumentation pour la radioprotection – Détecteur de rayonnement de type

sac à dos (BRD) pour la détection du trafic illicite des matières radioactives
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 13.280 ISBN 978-2-8322-6053-1




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – IEC 62694:2022 © IEC 2022
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions, abbreviated terms and symbols, quantities and units . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms and symbols . 10
3.3 Quantities and units . 10
4 General test procedure . 11
4.1 General . 11
4.2 Standard test conditions . 11
4.3 Uncertainties. 11
4.4 Statistical fluctuations . 11
4.5 Background radiation during testing . 12
4.6 Radiation sources . 12
4.7 Special nuclear material (SNM) and depleted uranium (DU) sources . 12
4.8 BRD set up . 12
4.9 Speed of moving sources including scaling of speed and distance . 14
4.10 Functionality tests . 14
4.10.1 General . 14
4.10.2 Pre-test measurements . 15
4.10.3 Intermediate-test measurements . 15
4.10.4 Post-test measurements . 16
4.10.5 Acceptance criteria . 16
5 General requirements . 17
5.1 Design requirements . 17
5.2 Markings . 17
5.3 Switches . 17
5.4 Effective range of dose rate measurement – photons . 17
5.5 Explosive atmospheres . 17
5.6 Power supply . 17
5.6.1 Requirements . 17
5.6.2 Method of test. 17
5.7 Data format . 18
5.7.1 Requirements . 18
5.7.2 Method of test. 18
5.8 Data transfer . 18
5.9 User interface – Indications . 19
5.10 Alarms . 19
5.10.1 Alarm indication . 19
5.10.2 Personal protection alarm . 19
5.10.3 Audible indication for searching . 19
5.10.4 Audible alarms . 19
6 Radiation detection requirements . 19
6.1 False alarm test . 19
6.1.1 Requirements . 19

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IEC 62694:2022 © IEC 2022 – 3 –
6.1.2 Method of test. 19
6.2 Alarm response to gamma radiation . 20
6.2.1 Requirements . 20
6.2.2 Method of test. 20
6.3 Alarm response to neutron radiation, if provided . 20
6.3.1 Requirements . 20
6.3.2 Method of test. 20
6.4 Personal radiation protection alarm and response time . 21
6.4.1 Requirements . 21
6.4.2 Method of test. 21
6.5 Gamma-ray ambient dose equivalent rate indication . 21
6.5.1 Requirements . 21
6.5.2 Method of test. 21
6.6 Over range test . 21
6.6.1 Requirements . 21
6.6.2 Method of test. 21
6.7 Neutron indication in the presence of photons, if applicable . 22
6.7.1 Requirements . 22
6.7.2 Method of test. 22
6.8 Detection of gradually increasing radiation levels . 22
6.8.1 Requirements . 22
6.8.2 Method of test. 22
6.9 Radionuclide identification, when provided . 23
6.9.1 Single radionuclide identification . 23
6.9.2 Simultaneous identification . 24
6.9.3 False identification. 25
6.9.4 Over range characteristics for identification . 25
6.10 Addressing natural background variations . 25
6.10.1 Requirements . 25
6.10.2 Method of test. 25
7 Climatic requirements . 26
7.1 General . 26
7.2 Ambient temperature. 26
7.2.1 Requirements . 26
7.2.2 Method of test. 26
7.3 Temperature shock . 26
7.3.1 Requirements . 26
7.3.2 Method of test. 27
7.4 Relative humidity . 27
7.4.1 Requirements . 27
7.4.2 Method of test. 27
7.5 Low/high temperature startup . 27
7.5.1 Requirements . 27
7.5.2 Method of test. 28
7.6 Dust and moisture protection . 28
7.6.1 Requirements . 28
7.6.2 Method of test – Dust . 28
7.6.3 Method of test – Moisture . 28
8 Mechanical requirements . 28

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– 4 – IEC 62694:2022 © IEC 2022
8.1 General . 28
8.2 Vibration . 29
8.2.1 Requirements . 29
8.2.2 Method of test. 29
8.3 Microphonics/Impact . 29
8.3.1 Requirements . 29
8.3.2 Method of test. 29
8.4 Mechanical shock . 29
8.4.1 Requirements . 29
8.4.2 Method of test. 29
8.5 Drop . 30
8.5.1 Requirements . 30
8.5.2 Method of test. 30
9 Electromagnetic requirements . 30
9.1 General . 30
9.2 Electrostatic discharge (ESD) . 30
9.2.1 Requirements . 30
9.2.2 Method of test. 30
9.3 Radio frequency (RF) . 30
9.3.1 Requirements . 30
9.3.2 Method of test. 30
9.4 Radiated RF emissions . 31
9.4.1 Requirements . 31
9.4.2 Method of test. 31
9.5 Conducted disturbances. 31
9.5.1 Requirements . 31
9.5.2 Method of test. 31
9.6 Magnetic fields . 31
9.6.1 Requirements . 31
9.6.2 Method of test. 31
10 Documentation . 32
10.1 Operation and maintenance manual . 32
10.2 Test certificate . 32
10.3 Declaration of conformity . 32
Annex A (informative) Summary of fluence rate calculations . 33
Bibliography . 35


Figure 1 – Diagram of the BRD testing angles and source movement directions . 13
Figure 2 – Diagram of the BRD reference point . 14

Table 1 – Standard test conditions . 11
Table 2 – Test results analysis . 17
Table 3 – List of radionuclides for identification tests . 23
Table 4 – Identification acceptance criteria . 24

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IEC 62694:2022 © IEC 2022 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

RADIATION PROTECTION INSTRUMENTATION – BACKPACK-TYPE
RADIATION DETECTOR (BRD) FOR THE DETECTION OF ILLICIT
TRAFFICKING OF RADIOACTIVE MATERIAL

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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IEC 62694 has been prepared by subcommittee 45B: Radiation protection instrumentation, of
IEC technical committee 45: Nuclear instrumentation. It is an International Standard.
This second edition cancels and replaces the first edition, published in 2014. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) making the standard consistent with the new standards for detection of illicit trafficking of
radioactive material;
b) creating unformed functionality test for all environmental, electromagnetic and mechanical
tests and a requirement for the coefficient of variation of each nominal mean reading;
c) revised radiological requirements including the simplification of radionuclide identification
acceptance criteria;
d) reference to IEC 62706 for the environmental, electromagnetic and mechanical test
conditions.

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– 6 – IEC 62694:2022 © IEC 2022
The text of this International Standard is based on the following documents:
Draft Report on voting
45B/1012/FDIS 45B/1018/RVD

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
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IEC 62694:2022 © IEC 2022 – 7 –
INTRODUCTION
Radioactive sources out of regulatory control, so-called “orphan sources”, have frequently
caused serious radiation exposures and widespread contamination. Although illicit trafficking in
nuclear and other radioactive materials is not a new phenomenon, concern about a nuclear
“black market” has increased particularly in view of its terrorist potential.
In response to the technical policy of agencies such as 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 checkpoints, international seaports, airports, and major events.
To ensure that measurement results made at diffe
...