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BS EN IEC 61098:2024

BS EN IEC 61098:2024

$215.11

Radiation protection instrumentation. Installed personnel surface contamination monitors

Published By Publication Date Number of Pages
BSI 2024 76
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PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
6 English
CONTENTS
10 FOREWORD
12 1 Scope
2 Normative references
13 3 Terms, definitions, units and symbols
3.1 Terms and definitions
18 3.2 Units
19 3.3 Symbols (see Table 1)
Tables
Table 1 – Symbols and abbreviate terms
20 4 Classification of monitors
4.1 According to type of radiation to be measured
4.2 According to body surface being monitored
4.3 According to background compensation method
5 Design characteristics
5.1 Positioning of the person being monitored
5.2 Size of the person being monitored
21 5.3 Hand monitoring facilities
5.4 Foot monitoring facilities
5.5 Body monitoring facilities
5.6 Frisker
22 5.7 Visual display
5.7.1 For the user
5.7.2 For maintenance purposes
5.8 Audible indicators
5.9 Monitoring period
5.10 Ease of decontamination
23 5.11 Detectors used
5.12 Seismic consideration
6 Performance requirements and test procedures
6.1 General test procedure
6.1.1 Nature of tests
6.1.2 Tests performed under standard test conditions
6.1.3 Tests performed with variation of influence quantities
24 6.1.4 Type F influence test
6.1.5 Type S influence test
6.2 Functionality test
6.2.1 General
6.2.2 Pre-test
25 6.2.3 Post-test
6.3 Statistical fluctuations
6.4 Reference sources
26 6.5 Requirements for use of gas flow detectors
7 Radiation measurement characteristics
7.1 Variation of response with source position
7.1.1 General
7.1.2 For clothing or the body
28 Figures
Figure 1 – Vertical position of radiation source
29 Figure 2 – Response curve composition by source position
30 Figure 3 – Centre planes of the detection volume
31 7.1.3 For hand monitoring
32 7.1.4 For foot monitoring
Figure 4 – Detector for hand monitoring
34 7.1.5 Contamination measurement of cloth or body by friskers
Figure 5 – Detector for foot monitoring
36 Figure 6 – Frisker (clothes)/Overhead detector
37 7.2 Background
7.2.1 General
7.2.2 Subtraction of pre-determined background
7.2.3 Simultaneous subtraction of determined background
7.2.4 No background subtraction
38 7.2.5 Gamma monitoring systems
7.3 Detection limit (DL)
7.3.1 General
40 7.3.2 For clothing or body
7.3.3 The effective instrument efficiency at the specific operating point
41 7.3.4 For hand monitoring
7.3.5 For foot monitoring
42 7.3.6 For frisker monitoring
7.4 Variation of response with energy
7.4.1 General
7.4.2 Beta
44 7.4.3 Alpha
7.4.4 Gamma
45 7.5 Response to other ionising radiations
7.5.1 General
46 7.5.2 Gamma radiation
7.5.3 Alpha radiation (for beta and gamma contamination monitoring assemblies)
7.5.4 Beta or gamma radiation (for alpha contamination monitoring assemblies)
7.6 Linearity of indication
7.6.1 Requirements
47 7.6.2 Method of test
7.7 Alarm threshold
7.7.1 General
7.7.2 Requirements
7.7.3 Method of test
8 Overload protection
8.1 Requirements
8.2 Method of test
48 9 Availability
9.1 Warm-up time
9.2 Power failure
10 Environmental requirements
10.1 General
10.2 Ambient temperature
10.2.1 Requirements
10.2.2 Method of test
49 10.3 Relative humidity
10.3.1 Requirements
10.3.2 Method of test
10.4 Atmospheric pressure
11 Mechanical requirements
11.1 General
11.2 Vibration test
11.2.1 Requirements
50 11.2.2 Method of test
11.3 Mechanical shock
11.3.1 Requirements
11.3.2 Method of test
12 Power and electromagnetic compatibility
12.1 Voltage and frequency
51 12.2 Electromagnetic compatibility
12.2.1 General
12.2.2 Electrostatic discharge
12.2.3 Radio-frequency (RF) Immunity
52 12.2.4 Radiated emissions
12.2.5 AC line powered monitor requirements
Table 2 – Emission frequency range
53 12.2.6 Immunity from conducted RF
12.2.7 Surges and ring waves
54 12.2.8 Magnetic fields
13 Storage
14 Documentation
14.1 Certificate
55 14.2 Operation and maintenance manual
14.3 Operational instructions
14.4 Type test report
56 Table 3 – Reference and standard test conditions
Table 4 – Tests performed under standard test conditions
58 Table 5 – Tests performed with variation of influence quantities
59 Table 6 – Test and sources
60 Annex A (informative)Explanation of the derivation of detection limit formula
A.1 General
63 A.2 In a case of taking into account a change in the background value between the background measurement and the contamination measurement
65 A.3 In a case of achieving background compensation simultaneously
67 Annex B (informative)Phantoms for testing the body effect for gammacontamination body monitors
B.1 General
B.2 Phantoms building blocks
Figure B.1 – Size of slices
68 B.3 Range of phantoms
Figure B.2 – Assembled phantoms
Table B.1 – Sizes of the set of phantoms
69 Annex C (informative)Characterization of the error due to the backgroundattenuation by the body
C.1 General
C.2 Standard background case
C.2.2 Result interpretation
70 C.2.3 Acceptance criteria
C.2.4 Important note
C.3 Increased background case
C.3.1 General
71 C.3.2 Polar response characterization
C.3.3 Test procedure of body attenuation effect
C.3.4 Result interpretation and acceptance criteria
72 Annex D (informative)Characterization of the response to a carried gamma source
D.1 General
D.2 Test procedure
Figure D.1 – Source positions for the head
73 Figure D.2 – Source positions for the body
Figure D.3 – Source positions for the legs
74 Bibliography

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