IEC 62387:2012

IEC 62387


®


Edition 1.0 2012-12



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE
colour
inside


Radiation protection instrumentation – Passive integrating dosimetry systems
for personal and environmental monitoring of photon and beta radiation

Instrumentation pour la radioprotection – Systèmes dosimétriques intégrés
passifs pour la surveillance de l’individu et de l'environnement des
rayonnements photoniques et bêta


IEC 62387:2012

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IEC 62387



®



Edition 1.0 2012-12







INTERNATIONAL





STANDARD







NORME



INTERNATIONALE
colour

inside










Radiation protection instrumentation – Passive integrating dosimetry systems

for personal and environmental monitoring of photon and beta radiation




Instrumentation pour la radioprotection – Systèmes dosimétriques intégrés

passifs pour la surveillance de l’individu et de l'environnement des

rayonnements photoniques et bêta
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX XC


ICS 13.280 ISBN 978-2-83220-518-1



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

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

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– 2 – 62387 © IEC:2012



CONTENTS


FOREWORD . 7

INTRODUCTION . 9

1 Scope . 10

2 Normative references . 11

3 Terms and definitions . 12


4 Units and symbols . 20

5 General test procedures . 21
5.1 Basic test procedures . 21
5.1.1 Instructions for use . 21
5.1.2 Nature of tests . 21
5.1.3 Reference conditions and standard test conditions . 21
5.1.4 Production of reference radiation . 21
5.1.5 Choice of phantom for the purpose of testing . 21
5.1.6 Position of dosemeter for the purpose of testing . 21
5.2 Test procedures to be considered for every test . 21
5.2.1 Number of dosemeters used for each test . 21
5.2.2 Consideration of the uncertainty of the conventional true value . 21
5.2.3 Consideration of non-linearity . 22
5.2.4 Consideration of natural background radiation . 22
5.2.5 Consideration of several detectors or signals in a dosemeter . 22
5.2.6 Performing the tests efficiently . 22
6 Performance requirements: summary . 22
7 Capability of a dosimetry system . 23
7.1 General . 23
7.2 Measuring range and type of radiation . 23
7.3 Rated ranges of the influence quantities . 24
7.4 Maximum rated measurement time t . 24
max
7.5 Reusability . 24
7.6 Model function . 24
7.7 Example for the capabilities of a dosimetry system . 24
8 Requirements for the design of the dosimetry system . 25

8.1 General . 25
8.2 Indication of the dose value (dosimetry system) . 25
8.3 Assignment of the dose value to the dosemeter (dosimetry system) . 25
8.4 Information given on the devices (reader and dosemeter) . 25
8.5 Retention and removal of radioactive contamination (dosemeter) . 26
8.6 Algorithm to evaluate the indicated value (dosimetry system) . 26
8.7 Use of dosemeters in mixed radiation fields (dosimetry system) . 26
9 Instruction manual . 26
9.1 General . 26
9.2 Specification of the technical data . 27
10 Software, data and interfaces of the dosimetry system . 28
10.1 General . 28
10.2 Design and structure of the software . 28
10.2.1 Requirements . 28

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62387 © IEC:2012 – 3 –


10.2.2 Method of test . 28

10.3 Identification of the software . 28

10.3.1 Requirements . 28

10.3.2 Method of test . 29

10.4 Authenticity of the software and the presentation of results . 29

10.4.1 Requirements . 29

10.4.2 Method of test . 29

10.5 Alarm and stop of system operation under abnormal operating conditions . 29

10.5.1 Requirements . 29

10.5.2 Method of test . 30

10.6 Control of input data by the dosimetry system . 30
10.6.1 Requirements . 30
10.6.2 Method of test . 30
10.7 Storage of data . 30
10.7.1 Requirements . 30
10.7.2 Method of test . 31
10.8 Transmission of data . 31
10.8.1 Requirements . 31
10.8.2 Method of test . 32
10.9 Hardware interfaces and software interfaces . 32
10.9.1 Requirements . 32
10.9.2 Method of test . 32
10.10 Documentation for the software test . 33
10.10.1 Requirements . 33
10.10.2 Method of test . 33
11 Radiation performance requirements and tests (dosimetry system). 33
11.1 General . 33
11.2 Coefficient of variation. 34
11.3 Non-linearity . 34
11.3.1 Requirements . 34
11.3.2 Method of test . 34
11.3.3 Interpretation of results. 34
11.4 Overload characteristics, after-effects, and reusability . 36
11.4.1 Requirements . 36
11.4.2 Method of test . 36

11.4.3 Interpretation of the results . 36
11.5 Radiation energy and angle of incidence for H (10) or H*(10) dosemeters . 37
p
11.5.1 Photon radiation . 37
11.5.2 Beta radiation . 38
11.6 Radiation energy and angle of incidence for H (3) dosemeters . 39
p
11.6.1 Photon radiation . 39
11.6.2 Beta radiation . 40
11.7 Radiation energy and angle of incidence for H (0,07) or H ’(0,07) dosemeters . 41
p
11.7.1 Photon radiation . 41
11.7.2 Beta radiation . 42
11.8 Over response to radiation incidence from the side of an H (10), H (3) or
p p
H (0,07) dosemeter. 43
p
11.8.1 Requirements . 43
11.8.2 Method of test . 44

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11.8.3 Interpretation of the results . 44

11.9 Indication of the presence of beta dose for H (0,07) whole body dosemeters . 44
p
12 Response to mixed irradiations (dosimetry system) . 44


12.1 Requirements . 44

12.2 Method of test . 45

12.2.1 General . 45

12.2.2 Preparation of the test . 45

12.2.3 Practical test . 45

12.3 Interpretation of the results . 46


13 Environmental performance requirements and tests . 46
13.1 General . 46
13.1.1 General requirement . 46
13.1.2 General method of test . 46
13.2 Ambient temperature and relative humidity (dosemeter) . 47
13.2.1 General . 47
13.2.2 Requirements . 47
13.2.3 Method of test . 47
13.2.4 Interpretation of the results . 47
13.3 Light exposure (dosemeter) . 48
13.3.1 General . 48
13.3.2 Requirements . 48
13.3.3 Method of test . 48
13.3.4 Interpretation of the results . 48
13.4 Dose build-up, fading, self-irradiation, and response to natural radiation
(dosemeter) . 48
13.4.1 General . 48
13.4.2 Requirements . 49
13.4.3 Method of test . 49
13.4.4 Interpretation of the results . 49
13.5 Sealing (dosemeter) . 50
13.6 Reader stability (reader) . 50
13.6.1 General . 50
13.6.2 Requirements . 50
13.6.3 Method of test . 50
13.6.4 Interpretation of the results . 50

13.7 Ambient temperature (reader). 51
13.7.1 General . 51
13.7.2 Requirements . 51
13.7.3 Method of test . 51
13.7.4 Interpretation of the results . 51
13.8 Light exposure (reader) . 51
13.8.1 General . 51
13.8.2 Requirements . 52
13.8.3 Method of test . 52
13.8.4 Interpretation of the results . 52
13.9 Primary power supply (reader). 52
13.9.1 General . 52
13.9.2 Requirements . 52
13.9.3 Method of test . 53

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62387 © IEC:2012 – 5 –


13.9.4 Interpretation of the results . 53

14 Electromagnetic performance requirements and tests (dosimetry system) . 53


14.1 General . 53

14.2 Requirement . 53

14.3 Method of test . 54

14.4 Interpretation of the results . 54

15 Mechanical performance requirements and tests . 54

15.1 General requirement . 54


15.2 Drop (dosemeter) . 55

15.2.1 Requirements . 55
15.2.2 Method of test . 55
15.2.3 Interpretation of the results . 55
16 Documentation . 55
16.1 Type test report . 55
16.2 Certificate issued by the laboratory performing the type test . 56
Annex A (normative) Confidence limits. 68
Annex B (informative) Causal connection between readout signals, indicated value
and measured value . 71
Annex C (informative) Overview of the necessary actions that have to be performed
for a type test according to this standard . 72
Annex D (informative) Usage categories of passive dosemeters . 74
Annex E (informative) Uncertainty of dosimetry systems . 75
Annex F (informative) Conversion coefficients h (3;α), h (0,07;α), and h ’ (0,07;α)
pK pK K
from air kerma, K , to the dose equivalent H (3), H (0,07), and H ’(0,07), respectively,
a p p
for radiation qualities defined in ISO 4037-1 . 76
Annex G (informative) Conversion coefficients h (0,07;source;α) and h (3;source;α)
pD pD
from personal absorbed dose in 0,07 mm depth, D (0,07), to the dose equivalent
p
H (0,07) and H (3), respectively, for radiation qualities defined in ISO 6980-1 . 78
p p
Annex H (informative) Computational method of test for mixed irradiations . 79
Bibliography . 81

Figure A.1 – Test for confidence interval . 68
Figure B.1 – Data evaluation in dosimetry systems . 71
Figure H.1 – Flow chart of a computer program to perform tests according to 12.2 . 80


Table 1 – Mandatory and maximum energy ranges covered by this standard . 10
Table 2 – Values of c and c for w different dose values and n indications for each
1 2
dose value . 35
Table 3 – Angular irradiations for H (10) and H*(10) dosemeters . 37
p
Table 4 – Angular irradiations for H (3) dosemeters . 39
p
Table 5 – Angular irradiations for H (0,07) and H ’(0,07) dosemeters . 41
p
Table 6 – Symbols . 57
Table 7 – Reference conditions and standard test conditions . 59
Table 8 – Performance requirements for H (10) dosemeters . 60
p
Table 9 – Performance requirements for H (3) dosemeters . 61
p
Table 10 – Performance requirements for H (0,07) dosemeters . 62
p
Table 11 – Performance requirements for H*(10) dosemeters . 63

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Table 12 – Performance requirements for H ’(0,07) dosemeters . 64

Table 13 – Environmental performance requirements for dosemeters and readers . 65


Table 14 – Electromagnetic disturbance performance requirements for dosimetry

systems according to Clause 14. 66

Table 15 – Mechanical disturbances performance requirements for dosemeters . 67

Table A.1 – Student’s t-value for a double sided 95 % confidence interval . 69


Table C.1 – Schedule for a type test of a dosemeter for H (10) fulfilling the
p

requirements within the mandatory ranges . 72

Table D.1 – Usage categories of passive dosemeters . 74

Table F.1 – Conversion coefficients h (3;N,α) from air kerma, K , to the dose
pK a
equivalent H (3) for radiation qualities defined in ISO 4037-1 and for the slab
p
phantom, reference distance 2 m . 76
Table F.2 – Conversion coefficients h (3;S,α) and h (3;R,α) from air kerma, K , to
pK pK a
the dose equivalent H (3) for radiation qualities defined in ISO 4037-1 and for the
p
slab phantom . 77
Table F.3 – Conversion coefficients h (0,07;S,α) and h (0,07;R,α) from air kerma,
pK pK
K , to the dose equivalent H (0,07) for radiation qualities defined in ISO 4037-1 and
a p
for the rod, pillar, and sl
...