BS IEC 60951-1:2022

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Nuclear facilities. Instrumentation systems important to safety. Radiation monitoring for accident and post-accident conditions – General requirements

Published By	Publication Date	Number of Pages
BSI	2022	50

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Categories: 27.120.20 - Nuclear power plants. Safety, BSI

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PDF Pages	PDF Title
2	undefined
4	English CONTENTS
6	FOREWORD
8	INTRODUCTION
9	Table 1 – Overview of the standards covering the domain of radiation monitoring in nuclear facilities
12	1 Scope 2 Normative references
14	3 Terms and definitions
18	4 Design principles 4.1 General 4.2 Basic requirements related to functions
20	4.3 Measurement range 4.4 Energy response 4.5 Minimum detectable activity 4.6 Precision (or repeatability)
21	4.7 Linearity 4.8 Measurement time 4.9 Response time
22	4.10 Overload performance 4.11 Ambient background shielding or compensation devices 4.12 Requirements related to accident conditions
23	4.13 Reliability 4.14 User interface 4.14.1 General 4.14.2 Display of measured value 4.14.3 Alarms
24	4.14.4 Status indication
25	4.14.5 Local indications 4.15 System testing, maintenance facilities and ease of decontamination 4.15.1 System testing 4.15.2 Maintenance facilities 4.15.3 Ease of decontamination 4.16 Electromagnetic interference
26	4.17 Power supplies 4.18 Interfaces 4.19 Sampling assembly
28	4.20 Quality 4.21 Type test report and certificate
29	5 Functional testing 5.1 General 5.2 General test procedures 5.2.1 General 5.2.2 Tests performed under standard test conditions 5.2.3 Tests performed with variation of influence quantities
30	Table 2 – Reference conditions and standard test conditions
31	Table 3 – Tests performed under standard test conditions
32	5.2.4 Calculations and/or numerical simulations Table 4 – Tests performed with variation of influence quantities
33	5.2.5 Reference sources
34	5.2.6 Statistical fluctuations 5.3 Radiation characteristics 5.3.1 Reference response 5.3.2 Sensitivity and relative response for solid sources
35	5.3.3 Linearity
36	5.3.4 Response to other artificial radionuclides 5.3.5 Response to background radiation
37	5.3.6 Precision (or repeatability) 5.3.7 Stability of the indication
38	5.3.8 Response time 5.3.9 Overload characteristics
39	5.4 Electrical characteristics 5.4.1 Alarm trip range 5.4.2 Alarm trip stability
40	5.4.3 Fault alarm 5.4.4 Status indication and fault alarm tests 5.4.5 Warm-up 5.4.6 Influence of supply variations
41	5.4.7 Short circuit withstand tests
42	5.5 Environmental characteristics 5.5.1 Stability of performance after storage 5.5.2 Mechanical characteristics
44	5.5.3 Stability of performance with variation of temperature and humidity
45	5.5.4 Electromagnetic compatibility
48	Bibliography

Additional information

Status	Definitive
Pages	50
Publication Date	2022-12-01
ISBN	978 0 539 04934 3
Standard Number	BS IEC 60951-1:2022
Title	Nuclear facilities. Instrumentation systems important to safety. Radiation monitoring for accident and post-accident conditions – General requirements
Identical National Standard Of	IEC 60951-1 Ed.3.0
Replaces	BS IEC 60951-1:2009
Descriptors	Nuclear-electric power plants, Nuclear energy, Nuclear power stations, Facilities (buildings), Design, Performance evaluation, Radiation, Gaseous emissions
Publisher	BSI
Committee	NCE/8
ICS Codes	27.120.20 - Nuclear power plants. Safety

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