IEC 62463:2024
(Main)Radiation protection instrumentation - X-ray systems for the security screening of persons
Radiation protection instrumentation - X-ray systems for the security screening of persons
IEC 62463:2024 is applicable to security screening systems designed to expose persons to X‑rays. In particular, the document applies to systems where the body is exposed to the primary beam of X-rays. It is common to divide currently used systems into three types: backscatter systems, transmission systems and combination backscatter/transmission systems. The purpose of this document is to provide standardized requirements and test methods to ensure the safe operation of X-ray personnel screening systems, from a radiation protection point of view. In particular, the document specifies requirements related to the radiation protection of the persons being screened, persons who are in the vicinity of the equipment and the operators.
This second edition cancels and replaces the first edition published in 2010. This edition includes the following significant technical changes with respect to the previous edition:
a) title modified;
b) the main dose quantity was updated from ambient dose equivalent (H*(10)) to the operational quantities recommended in ICRU Report 95:2020;
c) the scope has been updated from X-ray systems for screening persons to X-ray systems that deliberately expose persons to X-rays for security purposes, which clarifies the ambiguity of whether d) occupied vehicle scanners are within scope;
d) the scheme for classifying systems was changed from one based on whether the system is backscatter, transmission or a combination to a classification system based on the dose level and administrative controls;
e) numerous electrical, environmental, electromagnetic, and mechanical safety requirements were updated.
Instrumentation pour la radioprotection - Systèmes radiographiques aux rayons X pour le contrôle de sécurité des individus
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IEC 62463 ®
Edition 2.0 2024-07
INTERNATIONAL
STANDARD
colour
inside
Radiation protection instrumentation – X-ray systems for the security screening
of persons
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IEC 62463 ®
Edition 2.0 2024-07
INTERNATIONAL
STANDARD
colour
inside
Radiation protection instrumentation – X-ray systems for the security screening
of persons
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.280 ISBN 978-2-8322-9377-5
– 2 – IEC 62463:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Units . 11
5 General test procedures . 11
5.1 Nature of tests . 11
5.2 Reference conditions and standard test conditions . 11
5.3 Tests performed under standard test conditions . 12
5.4 Tests performed with variation of influence quantities . 12
6 Safety considerations . 13
6.1 General . 13
6.2 Shielding . 13
6.2.1 Requirements . 13
6.2.2 Method of test. 13
6.3 System controls and normal operation indications . 13
6.3.1 Requirements . 13
6.3.2 Method of test. 14
6.4 Safety indicators and interlocks . 14
6.4.1 Safety standards. 14
6.4.2 Requirements . 14
6.4.3 Method of test. 14
7 Conditions and methods for producing the X-ray screening spectra . 15
7.1 General . 15
7.2 Tube potential characteristics of the X-ray unit. 15
7.2.1 Requirements . 15
7.2.2 Method of test. 15
8 Effective dose at the position of the person being screened . 15
8.1 Classification of systems . 15
8.2 Requirements . 15
8.2.1 General . 15
8.2.2 General-use systems . 16
8.2.3 Limited-use systems . 16
8.3 Method of test . 16
9 Electrical characteristics . 16
9.1 Requirements . 16
9.2 Method of test . 16
10 Environmental conditions . 17
10.1 Ambient temperature. 17
10.1.1 Requirements . 17
10.1.2 Method of test. 17
10.2 Relative humidity . 17
10.2.1 Requirements . 17
10.2.2 Method of test. 17
11 Electromagnetic compatibility . 17
11.1 Requirements . 17
11.2 Method of test . 18
12 Mechanical characteristics . 18
12.1 Requirements . 18
12.2 Method of test . 18
13 Documentation . 18
13.1 Standard operating procedure . 18
13.2 Other documentation. 19
Annex A (normative) Estimation of the effective dose per screening at the reference
position . 20
A.1 General . 20
A.2 Determination of the reference position . 20
A.3 Measurement of the air kerma at the reference position . 21
A.4 Estimation of the half-value layer of aluminum of the beam . 21
A.5 Estimation of the effective dose . 21
Annex B (informative) Guidance on detector choice for measuring air kerma . 24
B.1 Background. 24
B.2 Guidance . 25
Annex C (informative) Requirements of International Basic Safety Standards (BSS) for
Protection Against Ionizing Radiation and For the Safety of Radiation Sources.
International Atomic Energy Agency (IAEA) Safety Series No. 115, 1996 . 26
Bibliography . 27
Figure A.1 – Illustrative examples . 20
Figure A.2 – Conversion coefficients from air kerma to effective dose from Table A.1
plotted as a function of HVL . 23
Al
Table 1 – Reference conditions and standard test conditions . 11
Table 2 – Tests performed under standard test conditions . 12
Table 3 – Tests performed with variations of influence quantities . 12
Table A.1 – Conversion coefficients from air kerma to operational quantities for
estimating effective dose . 22
– 4 – IEC 62463:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RADIATION PROTECTION INSTRUMENTATION –
X-RAY SYSTEMS FOR THE SECURITY SCREENING OF PERSONS
FOREWORD
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