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IEC 61888:2002
Current
The latest, up-to-date edition.
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Nuclear power plants - Instrumentation important to safety - Determination and maintenance of trip setpoints
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
English - French
20-08-2002
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 Abbreviations
5 Determination of setpoints
5.1 Safety
5.2 Safety analysis
5.3 Limiting safety system setting (LSSS)
5.3.1 Channel uncertainty and trip setpoint
5.3.2 Channel uncertainty determination
5.3.3 Trip setpoint
5.3.4 Allowable value
5.4 Combination of uncertainties
5.4.1 Square-root-sum-of-squares method (SRSS)
5.4.2 Algebraic method
5.5 Operational considerations
5.6 Instrument channel range
6 Documentation
7 Maintenance of safety system setpoints
7.1 Testing
7.2 Replacement
Annex A (informative) Example of setpoint determination
Bibliography
Figures
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