NUCLEAR ENERGY AGENCY COMMITTEE ON THE SAFETY OF NUCLEAR INSTALLATIONS PASSIVE SYSTEM RELIABILITY - A Challenge to Reliability Engineering and Licensing of Advanced Nuclear Power Plants
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.................................................................................................................................................. 4 FOREWORD ................................................................................................................................................ 7 EXECUTIVE SUMMARY .......................................................................................................................... 8 WORKSHOP .............................................................................................................................................. 11 Background ............................................................................................................................................... 11 Objective ................................................................................................................................................... 11 WORKSHOP PROGRAMME .................................................................................................................. 12 SUMMARY OF WORKSHOP SESSIONS.............................................................................................. 14 Categories of Passivity .............................................................................................................................. 14 Elements .................................................................................................................................................... 14 Place of passive systems ........................................................................................................................... 15 Reliability of passive systems ................................................................................................................... 16 Passive system and PSA............................................................................................................................ 16 Workshop Participants .............................................................................................................................. 17 PAPERS AND PRESENTATIONS........................................................................................................... 21 PASSIVE SYSTEM RELIABILITY A CHALLENGE TO RELIABILITY ENGINEERING AND LICENSING OF ADVANCED NUCLEAR POWER PLANTS: NEA CNRA CSNI ........................................................... 22 RELIABILITY METHODS FOR PASSIVE SAFETY FUNCTIONS (RMPS) ........................................................ 32 RELIABILITY OF PASSIVE SYSTEMS (ROPS).............................................................................................. 37 WGRISK SURVEY ON RELIABILITY OF PASSIVE SYSTEMS (ROPS)........................................................... 43 Introduction........................................................................................................................................... 43 Responses.............................................................................................................................................. 43 Conclusions........................................................................................................................................... 43 WHAT HAS TO BE TAKEN INTO ACCOUNT WHEN BUILDING A NPP WITH PASSIVE SAFETY SYSTEMS? ..... 52 PWR PASSIVE HEAT REMOVAL SYSTEM WITH THE “BASE OPERATION PASSIVE HEAT REMOVAL” STRATEGY APPLICATION WITH PRIMARY HEAT EXCHANGERS.............................................................. 61 INHERENT FAILURE MODES OF PASSIVE SAFETY SYSTEMS...................................................................... 75
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