IEC 61888 : 1.0

Table of Contents

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

Abstract

Describes the requirements for assuring that automatic setpoints for nuclear safety system instrumentation are established and maintained within specified limits in nuclear power plants and nuclear reactor facilities.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 45