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IEC 60951-1:2009

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Nuclear power plants - Instrumentation important to safety - Radiation monitoring for accident and post-accident conditions - Part 1: General requirements
Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

11-24-2022

Language(s)

English - French, Russian

Published date

06-29-2009

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Design principles
  4.1 Basic requirements related to functions
  4.2 Measurement range
  4.3 Energy response
  4.4 Minimum detectable activity (or limit of detection)
  4.5 Precision (or repeatability)
  4.6 Accuracy (or relative error)
  4.7 Measurement time
  4.8 Response time
  4.9 Overload performance
  4.10 Ambient background shielding or compensation devices
  4.11 Requirements related to accident conditions
  4.12 Reliability
  4.13 User interface
       4.13.1 General
       4.13.2 Display of measured value
       4.13.3 Alarms
       4.13.4 Status indication
       4.13.5 Local indications
  4.14 System testing, maintenance facilities and ease of
       decontamination
       4.14.1 System testing
       4.14.2 Maintenance facilities
       4.14.3 Ease of decontamination
  4.15 Electromagnetic interference
  4.16 Power supplies
  4.17 Interfaces
  4.18 Sampling assembly
  4.19 Quality
  4.20 Type test report and certificate
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
       5.2.4 Calculations and/or numerical simulations
       5.2.5 Reference sources
       5.2.6 Statistical fluctuations
  5.3 Performance characteristics
       5.3.1 Reference response
       5.3.2 Sensitivity and relative response for solid
              sources
       5.3.3 Accuracy (relative error)
       5.3.4 Response to other artificial radionuclides
       5.3.5 Response to background radiation
       5.3.6 Precision (or repeatability)
       5.3.7 Stability of the indication
       5.3.8 Response time
       5.3.9 Overload test
  5.4 Electrical performance tests
       5.4.1 Alarm trip range
       5.4.2 Alarm trip stability
       5.4.3 Fault alarm
       5.4.4 Status indication and fault alarm tests
       5.4.5 Warm-up time - Detection and measuring assembly
       5.4.6 Influence of supply variations
       5.4.7 Short circuit withstand tests
  5.5 Environmental performance test
       5.5.1 Stability of performance after storage
       5.5.2 Mechanical tests
       5.5.3 Stability of performance with variation of
              temperature and humidity
       5.5.4 Electromagnetic compatibility
Bibliography

IEC 60951-1:2009 provides general guidance on the design principles and performance criteria for equipment to measure radiation and fluid (gaseous effluents or liquids) radioactivity levels at nuclear power plants during and after an accident. It specifies the general characteristics, general test procedures, radiation, electrical, safety and environmental characteristics and the identification and certification of the equipment. The main technical changes with regard to the previous edition are as follows:
- clarify the definitions;
- up-date the references to new standards published since the first edition;
- update the units of radiation.

Committee
TC 45/SC 45A
DevelopmentNote
Stability Date: 2019. (09/2017)
DocumentType
Standard
Pages
92
PublisherName
International Electrotechnical Committee
Status
Superseded
SupersededBy
Supersedes

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IEC 60951-5:1994 Nuclear power plants - Radiation monitoring equipment for accident and post-accident conditions - Part 5: Radioactivity of air in light water nuclear power plants
BS IEC 60951-2:2009 Nuclear power plants. Instrumentation important to safety. Radiation monitoring for accident and post-accident conditions Equipment for continuous off-line monitoring of radioactivity in gaseous effluents and ventilation air
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IEC 60768:2009 Nuclear power plants - Instrumentation important to safety - Equipment for continuous in-line or on-line monitoring of radioactivity in process streams for normal and incident conditions
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07/30172926 DC : 0 BS IEC 60951-2 - NUCLEAR POWER PLANTS - INSTRUMENTATION IMPORTANT TO SAFETY - RADIATION MONITORING SYSTEM FOR ACCIDENT AND POST ACCIDENT CONDITIONS - PART 2: EQUIPMENT FOR CONTINUOUS OFF-LINE MONITORING OF RADIOACTIVITY IN GASEOUS EFFLUENTS AND VENTILATION AIR
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IEC 61000-4-8 : 2.0 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-8: TESTING AND MEASUREMENT TECHNIQUES - POWER FREQUENCY MAGNETIC FIELD IMMUNITY TEST
IEC 60038:2009 IEC standard voltages
IEC 60951-2:2009 Nuclear power plants - Instrumentation important to safety - Radiation monitoring for accident and post-accident conditions - Part 2: Equipment for continuous off-line monitoring of radioactivity in gaseous effluents and ventilation air
IEC 60050-394:2007 International Electrotechnical Vocabulary (IEV) - Part 394: Nuclear instrumentation - Instruments, systems, equipment and detectors
IEC 61559-2:2002 Radiation in nuclear facilities - Centralized systems for continuous monitoring of radiation and/or levels of radioactivity - Part 2: Requirements for discharge, environmental, accident, or post-accident monitoring functions
IEC 61000-6-4:2006+AMD1:2010 CSV ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 6-4: GENERIC STANDARDS - EMISSION STANDARD FOR INDUSTRIAL ENVIRONMENTS
IEC 61000-4-4 : 3.0EN+(REDLINE+VERSION) ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-4: TESTING AND MEASUREMENT TECHNIQUES - ELECTRICAL FAST TRANSIENT/BURST IMMUNITY TEST
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IEC 60532:2010 Radiation protection instrumentation - Installed dose rate meters, warning assemblies and monitors - X and gamma radiation of energy between 50 keV and 7 MeV
IEC 62138:2004 Nuclear power plants - Instrumentation and control important for safety - Software aspects for computer-based systems performing category B or C functions
IEC 61069-1:2016 Industrial-process measurement, control and automation - Evaluation of system properties for the purpose of system assessment - Part 1: Terminology and basic concepts
IEC 61000-4-11:2004+AMD1:2017 CSV Electromagnetic compatibility (EMC) - Part 4-11: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests
IEC 61000-4-8:2009 Electromagnetic compatibility (EMC) - Part 4-8: Testing and measurement techniques - Power frequency magnetic field immunity test
IEC 61000-4-4:2012 RLV Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement techniques - Electrical fast transient/burst immunity test
IEC 60761-2:2002 Equipment for continuous monitoring of radioactivity in gaseous effluents - Part 2: Specific requirements for radioactive aerosol monitors including transuranic aerosols
IEC 60761-3:2002 Equipment for continuous monitoring of radioactivity in gaseous effluents - Part 3: Specific requirements for radioactive noble gas monitors
IEC 60761-4:2002 Equipment for continuous monitoring of radioactivity in gaseous effluents - Part 4: Specific requirements for radioactive iodine monitors
IEC 60980:1989 Recommended practices for seismic qualification of electrical equipment of the safety system for nuclear generating stations
IEC 61000-4-12 : 3.0 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-12: TESTING AND MEASUREMENT TECHNIQUES - RING WAVE IMMUNITY TEST
IEC 60987:2007+AMD1:2013 CSV Nuclear power plants - Instrumentation and control important to safety - Hardware design requirements for computer-based systems
IEC 61504:2017 Nuclear facilities - Instrumentation and control systems important to safety - Centralized systems for continuous monitoring of radiation and/or levels of radioactivity
IEC 61000-4-6 : 4.0 ELECTROMAGNETIC COMPATIBILITY (EMC) - PART 4-6: TESTING AND MEASUREMENT TECHNIQUES - IMMUNITY TO CONDUCTED DISTURBANCES, INDUCED BY RADIO-FREQUENCY FIELDS
IEC 61000-4-6:2013 Electromagnetic compatibility (EMC) - Part 4-6: Testing and measurement techniques - Immunity to conducted disturbances, induced by radio-frequency fields
IEC 62302:2007 Radiation protection instrumentation - Equipment for sampling and monitoring radioactive noble gases
IEC 60951-3:2009 Nuclear power plants - Instrumentation important to safety - Radiation monitoring for accident and post-accident conditions - Part 3: Equipment for continuous high range area gamma monitoring
IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
IEC 60861:2006 Equipment for monitoring of radionuclides in liquid effluents and surface waters
ISO 2889:2010 Sampling airborne radioactive materials from the stacks and ducts of nuclear facilities
IEC 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
IEC 61000-4-2:2008 Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test
IEC 61000-4-3:2006+AMD1:2007+AMD2:2010 CSV Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
IEC 62262:2002 Degrees of protection provided by enclosures for electrical equipment against external mechanical impacts (IK code)
IEC 60951-4:2009 Nuclear power plants - Instrumentation important to safety - Radiation monitoring for accident and post-accident conditions - Part 4: Equipment for continuous in-line or on-line monitoring of radioactivity in process streams
IEC 60880:2006 Nuclear power plants - Instrumentation and control systems important to safety - Software aspects for computer-based systems performing category A functions
IEC 60780:1998 Nuclear power plants - Electrical equipment of the safety system - Qualification
IEC 60761-1:2002 Equipment for continuous monitoring of radioactivity in gaseous effluents - Part 1: General requirements
IEC 61000-6-4:2006+AMD1:2010 CSV Electromagnetic compatibility (EMC) - Part 6-4: Generic standards - Emission standard for industrial environments
IEC 60768:2009 Nuclear power plants - Instrumentation important to safety - Equipment for continuous in-line or on-line monitoring of radioactivity in process streams for normal and incident conditions
IEC 60068-2-1:2007 Environmental testing - Part 2-1: Tests - Test A: Cold
IEC 60068-2-14:2009 Environmental testing - Part 2-14: Tests - Test N: Change of temperature
IEC 60050-393:2003 International Electrotechnical Vocabulary (IEV) - Part 393: Nuclear instrumentation - Physical phenomena and basic concepts
IEC 60068-2-30:2005 Environmental testing - Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle)

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