Radiation protection instrumentation - Dosimetry systems with integrating passive detectors for individual, workplace and environmental monitoring of photon and beta radiation

IEC 62387:2020 is available as IEC 62387:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 62387:2020 applies to all kinds of passive dosimetry systems that are used for measuring:
- the personal dose equivalent Hp(10) (for individual whole body monitoring),
- the personal dose equivalent Hp(3) (for individual eye lens monitoring),
- the personal dose equivalent Hp(0,07) (for both individual whole body skin and local skin for extremity monitoring),
- the ambient dose equivalent H*(10) (for workplace and environmental monitoring),
- the directional dose equivalent H'(3) (for workplace and environmental monitoring), or
- the directional dose equivalent H'(0,07) (for workplace and environmental monitoring).
This document applies to dosimetry systems that measure external photon and/or beta radiation in the dose range between 0,01 mSv and 10 Sv and in the energy ranges given in Table 1. All the energy values are mean energies with respect to the fluence. The dosimetry systems usually use electronic devices for the data evaluation and thus are often computer controlled.

Instrumentation pour la radioprotection - Systèmes dosimétriques avec détecteurs intégrés passifs pour le contrôle radiologique individuel, du lieu de travail et de l'environnement des rayonnements photoniques et bêta

IEC 62387:2020 est disponible sous forme de IEC 62387:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 62387:2020 s’applique à toutes sortes de systèmes dosimétriques passifs utilisés pour la mesure de:
- l’équivalent de dose individuel Hp(10) (pour le contrôle radiologique individuel du corps entier),
- l’équivalent de dose individuel Hp(3) (pour le contrôle radiologique individuel des cristallins),
- l’équivalent de dose individuel Hp(0,07) (pour le contrôle radiologique individuel de la peau du corps entier et de la peau locale et des extrémités),
- l’équivalent de dose ambiant H*(10) (pour le contrôle radiologique du lieu de travail et de l'environnement),
- l’équivalent de dose directionnel H'(3) (pour le contrôle radiologique du lieu de travail et de l'environnement), ou
- l’équivalent de dose directionnel H’(0,07) (pour le contrôle radiologique du lieu de travail et de l'environnement).
Le présent document s’applique aux systèmes dosimétriques qui mesurent les rayonnements photoniques et/ou bêta externes dans la plage de dose comprise entre 0,01 mSv et 10 Sv et dans les plages d’énergie données dans le Tableau 1. Toutes les valeurs d’énergie données sont des valeurs moyennes par rapport à la fluence. Les systèmes dosimétriques utilisent habituellement des dispositifs électroniques pour l’évaluation des données et sont donc souvent commandés par ordinateur.

General Information

Status
Published
Publication Date
30-Jan-2020
Current Stage
PPUB - Publication issued
Completion Date
31-Jan-2020
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IEC 62387:2020 - Radiation protection instrumentation - Dosimetry systems with integrating passive detectors for individual, workplace and environmental monitoring of photon and beta radiation
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IEC 62387
Edition 2.0 2020-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Radiation protection instrumentation – Dosimetry systems with integrating
passive detectors for individual, workplace and environmental monitoring of
photon and beta radiation
Instrumentation pour la radioprotection – Systèmes dosimétriques avec
détecteurs intégrés passifs pour le contrôle radiologique individuel, du lieu
de travail et de l'environnement des rayonnements photoniques et bêta
IEC 62387:2020-01(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62387
Edition 2.0 2020-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Radiation protection instrumentation – Dosimetry systems with integrating
passive detectors for individual, workplace and environmental monitoring of
photon and beta radiation
Instrumentation pour la radioprotection – Systèmes dosimétriques avec
détecteurs intégrés passifs pour le contrôle radiologique individuel, du lieu
de travail et de l'environnement des rayonnements photoniques et bêta
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.280 ISBN 978-2-8322-7696-9

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
---------------------- Page: 3 ----------------------
– 2 – IEC 62387:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 7

INTRODUCTION ..................................................................................................................... 9

1 Scope ............................................................................................................................ 10

2 Normative references .................................................................................................... 11

3 Terms and definitions .................................................................................................... 12

4 Units and symbols ......................................................................................................... 22

5 General test procedures ................................................................................................ 22

5.1 Basic test procedures ........................................................................................... 22

5.1.1 Instructions for use ........................................................................................ 22

5.1.2 Nature of tests ............................................................................................... 22

5.1.3 Reference conditions and standard test conditions ........................................ 22

5.1.4 Production of reference radiation ................................................................... 22

5.1.5 Choice of phantom for the purpose of testing ................................................. 23

5.1.6 Position of dosemeter for the purpose of testing ............................................ 23

5.2 Test procedures to be considered for every test .................................................... 23

5.2.1 Number of dosemeters used for each test ...................................................... 23

5.2.2 Consideration of the uncertainty of the conventional quantity value ............... 23

5.2.3 Consideration of non-linearity ........................................................................ 23

5.2.4 Consideration of natural background radiation ............................................... 23

5.2.5 Consideration of several detectors or signals in a dosemeter ......................... 23

5.2.6 Performing the tests efficiently ....................................................................... 24

6 Performance requirements: summary ............................................................................ 24

7 Capability of a dosimetry system ................................................................................... 25

7.1 General ................................................................................................................. 25

7.2 Measuring range and type of radiation .................................................................. 25

7.3 Rated ranges of the influence quantities ............................................................... 25

7.4 Maximum rated measurement time t ............................................................... 25

max

7.5 Reusability ............................................................................................................ 26

7.6 Model function ...................................................................................................... 26

7.7 Example for the capabilities of a dosimetry system ............................................... 26

8 Requirements for the design of the dosimetry system .................................................... 27

8.1 General ................................................................................................................. 27

8.2 Indication of the dose value (dosimetry system) .................................................... 27

8.3 Assignment of the dose value to the dosemeter (dosimetry system) ...................... 27

8.4 Information given on the devices (reader and dosemeter) ..................................... 27

8.5 Retention and removal of radioactive contamination (dosemeter) .......................... 28

8.6 Algorithm to evaluate the indicated value (dosimetry system)................................ 28

8.7 Use of dosemeters in mixed radiation fields (dosimetry system) ............................ 28

9 Instruction manual ......................................................................................................... 28

9.1 General ................................................................................................................. 28

9.2 Specification of the technical data ......................................................................... 28

10 Software, data and interfaces of the dosimetry system .................................................. 29

10.1 General ................................................................................................................. 29

10.2 Design and structure of the software ..................................................................... 30

10.2.1 Requirements ................................................................................................ 30

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IEC 62387:2020 © IEC 2020 – 3 –

10.2.2 Method of test................................................................................................ 30

10.3 Identification of the software ................................................................................. 30

10.3.1 Requirements ................................................................................................ 30

10.3.2 Method of test................................................................................................ 31

10.4 Authenticity of the software and the presentation of results ................................... 31

10.4.1 Requirements ................................................................................................ 31

10.4.2 Method of test................................................................................................ 31

10.5 Alarm and stop of system operation under abnormal operating conditions ............. 31

10.5.1 Requirements ................................................................................................ 31

10.5.2 Method of test................................................................................................ 32

10.6 Control of input data by the dosimetry system ....................................................... 32

10.6.1 Requirements ................................................................................................ 32

10.6.2 Method of test................................................................................................ 32

10.7 Storage of data ..................................................................................................... 32

10.7.1 Requirements ................................................................................................ 32

10.7.2 Method of test................................................................................................ 33

10.8 Transmission of data ............................................................................................. 33

10.8.1 Requirements ................................................................................................ 33

10.8.2 Method of test................................................................................................ 34

10.9 Hardware interfaces and software interfaces ......................................................... 34

10.9.1 Requirements ................................................................................................ 34

10.9.2 Method of test................................................................................................ 34

10.10 Documentation for the software test ...................................................................... 34

10.10.1 Requirements ................................................................................................ 34

10.10.2 Method of test................................................................................................ 35

11 Radiation performance requirements and tests (dosimetry system) ................................ 35

11.1 General ................................................................................................................. 35

11.2 Coefficient of variation .......................................................................................... 36

11.3 Non-linearity ......................................................................................................... 36

11.3.1 Requirements ................................................................................................ 36

11.3.2 Method of test................................................................................................ 36

11.3.3 Interpretation of results .................................................................................. 36

11.4 Overload characteristics, after-effects, and reusability .......................................... 37

11.4.1 Requirements ................................................................................................ 37

11.4.2 Method of test................................................................................................ 38

11.4.3 Interpretation of the results ............................................................................ 38

11.5 Radiation energy and angle of incidence for H (10) or H*(10) dosemeters ............ 39

11.5.1 Photon radiation ............................................................................................ 39

11.5.2 Beta radiation ................................................................................................ 41

11.6 Radiation energy and angle of incidence for H (3) or H'(3) dosemeters ................ 41

11.6.1 Photon radiation ............................................................................................ 41

11.6.2 Beta radiation ................................................................................................ 43

11.7 Radiation energy and angle of incidence for H (0,07) or H'(0,07) dosemeters ...... 44

11.7.1 Photon radiation ............................................................................................ 44

11.7.2 Beta radiation ................................................................................................ 46

11.8 Over indication due to radiation incident from the side of an H (10), H (3) or

p p

H (0,07) dosemeter .............................................................................................. 47

11.8.1 Requirements ................................................................................................ 47

11.8.2 Method of test................................................................................................ 47

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– 4 – IEC 62387:2020 © IEC 2020

11.8.3 Interpretation of the results ............................................................................ 48

11.9 Indication of the presence of beta dose for H (0,07) whole body dosemeters ....... 48

12 Response to mixed irradiations (dosimetry system) ....................................................... 48

12.1 Requirements ....................................................................................................... 48

12.2 Method of test ....................................................................................................... 49

12.2.1 General ......................................................................................................... 49

12.2.2 Preparation of the test ................................................................................... 49

12.2.3 Practical test ................................................................................................. 49

12.3 Interpretation of the results ................................................................................... 50

13 Environmental performance requirements and tests ....................................................... 50

13.1 General ................................................................................................................. 50

13.1.1 General requirement ...................................................................................... 50

13.1.2 General method of test .................................................................................. 50

13.2 Ambient temperature and relative humidity (dosemeter) ........................................ 51

13.2.1 General ......................................................................................................... 51

13.2.2 Requirements ................................................................................................ 51

13.2.3 Method of test................................................................................................ 51

13.2.4 Interpretation of the results ............................................................................ 51

13.3 Light exposure (dosemeter) .................................................................................. 52

13.3.1 General ......................................................................................................... 52

13.3.2 Requirements ................................................................................................ 52

13.3.3 Method of test................................................................................................ 52

13.3.4 Interpretation of the results ............................................................................ 52

13.4 Dose build-up, fading and self-irradiation (dosemeter) .......................................... 52

13.4.1 General ......................................................................................................... 52

13.4.2 Requirements ................................................................................................ 53

13.4.3 Method of test................................................................................................ 53

13.4.4 Interpretation of the results ............................................................................ 53

13.5 Sealing (dosemeter) .............................................................................................. 53

13.6 Reader stability (reader) ....................................................................................... 53

13.6.1 General ......................................................................................................... 53

13.6.2 Requirements ................................................................................................ 54

13.6.3 Method of test................................................................................................ 54

13.6.4 Interpretation of the results ............................................................................ 54

13.7 Ambient temperature (reader) ............................................................................... 54

13.7.1 General ......................................................................................................... 54

13.7.2 Requirements ................................................................................................ 54

13.7.3 Method of test................................................................................................ 54

13.7.4 Interpretation of the results ............................................................................ 55

13.8 Light exposure (reader) ......................................................................................... 55

13.8.1 General ......................................................................................................... 55

13.8.2 Requirements ................................................................................................ 55

13.8.3 Method of test................................................................................................ 55

13.8.4 Interpretation of the results ............................................................................ 56

13.9 Primary power supply (reader) .............................................................................. 56

13.9.1 General ......................................................................................................... 56

13.9.2 Requirements ................................................................................................ 56

13.9.3 Method of test................................................................................................ 56

13.9.4 Interpretation of the results ............................................................................ 57

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IEC 62387:2020 © IEC 2020 – 5 –

14 Electromagnetic performance requirements and tests (dosimetry system) ..................... 57

14.1 General ................................................................................................................. 57

14.2 Requirements ....................................................................................................... 57

14.3 Method of test ....................................................................................................... 58

14.4 Interpretation of the results ................................................................................... 58

15 Mechanical performance requirements and tests ........................................................... 58

15.1 General requirement ............................................................................................. 58

15.2 Drop (dosemeter) .................................................................................................. 59

15.2.1 Requirements ................................................................................................ 59

15.2.2 Method of test................................................................................................ 59

15.2.3 Interpretation of the results ............................................................................ 59

16 Documentation .............................................................................................................. 60

16.1 Type test report .................................................................................................... 60

16.2 Certificate issued by the laboratory performing the type test ................................. 60

Annex A (normative) Confidence limits ................................................................................. 73

A.1 General ................................................................................................................. 73

A.2 Confidence interval for the mean, x ..................................................................... 73

A.3 Confidence interval for a combined quantity .......................................................... 74

Annex B (informative) Causal connection between readout signals, indicated value

and measured value ............................................................................................................. 76

Annex C (informative) Overview of the necessary actions that have to be performed

for a type test according to this document ............................................................................. 77

Annex D (informative) Uncertainty of dosimetry systems ...................................................... 78

Annex E (informative) Conversion coefficients h (0,07;source;α), h' (0,07;source;α),

pD D

h (3;source;α), and h' (3;source;α) from personal absorbed dose in 0,07 mm depth,

pD D

D (0,07), to the corresponding dose equivalent quantities for radiation qualities

defined in ISO 6980-1 ........................................................................................................... 79

Annex F (informative) Computational method of test for mixed irradiations .......................... 83

Bibliography .......................................................................................................................... 85

Figure 1 – Stepwise irradiation of an H*(10) dosemeter at 90° angle of incidence ................. 40

Figure A.1 – Test for confidence interval ............................................................................... 73

Figure B.1 – Data evaluation in dosimetry systems ............................................................... 76

Figure F.1 – Flow chart of a computer program to perform tests according to 12.2 ................ 84

Table 1 – Mandatory and maximum energy ranges covered by this document ....................... 10

Table 2 – Values of c and c for w different dose values and n indications for each

1 2

dose value ............................................................................................................................ 37

Table 3 – Angles of incidence of irradiation for H (10) and H*(10) dosemeters ..................... 39

Table 4 – Angles of incidence of irradiation for H (3) and H'(3) dosemeters .......................... 42

Table 5 – Angles of incidence of irradiation for H (0,07) and H'(0,07) dosemeters ................ 45

Table 6 – Symbols ................................................................................................................ 61

Table 7 – Reference conditions and standard test conditions ................................................ 63

Table 8 – Performance requirements for H (10) dosemeters ................................................. 64

Table 9 – Performance requirements for H (3) dosemeters .................................................. 65

Table 10 – Performance requirements for H (0,07) dosemeters ............................................ 66

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– 6 – IEC 62387:2020 © IEC 2020

Table 11 – Performance requirements for H*(10) dosemeters ............................................... 67

Table 12 – Performance requirements for H'(3) dosemeters .................................................. 68

Table 13 – Performance requirements for H'(0,07) dosemeters ............................................. 69

Table 14 – Environmental performance requirements for dosemeters and readers ................ 70

Table 15 – Electromagnetic disturbance performance requirements for dosimetry

systems according to Clause 14 ............................................................................................ 71

Table 16 – Mechanical disturbances performance requirements for dosemeters ................... 72

Table 17 – List of abbreviations ............................................................................................ 72

Table A.1 – Student’s t-value for a double sided 95 % confidence interval ............................ 74

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

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