شماره ركورد كنفرانس :
3254
عنوان مقاله :
Risk-Based Surveillance Test Interval (STI) Extensions for L-LOCA Initiating Events in a Typical VVER-1000 NPP
Author/Authors :
.M.R Zerehpoosh Department of Nuclear Engineering - School of Mechanical Engineering, Shiraz University , .A Pirouzmand Department of Nuclear Engineering - School of Mechanical Engineering, Shiraz University , .K Hadad Department of Nuclear Engineering - School of Mechanical Engineering, Shiraz University , .P Ghanaatian Department of Nuclear Engineering - School of Mechanical Engineering, Shiraz University
كليدواژه :
SAPHIRE Code , Core Damage Frequency , Surveillance Test Interval , Technical specifications
عنوان كنفرانس :
پنجمين كنفرلنس بين المللي قابليت اطمينان و ايمني
چكيده لاتين :
In the last decades, Probabilistic Safety Assessment (PSA) has been increasingly applied to improve regulatory processes, such as risk-based inform to technical specifications (TS), test and maintenance policy optimization, and etc. In this study the risk measure of Core Damage Frequency (CDF), from the level 1 PSA is used to investigate the effect of Surveillance Test Interval (STI) extensions on nuclear power plant safety. To achieve this goal, fault tree and event tree tools for the L-LOCA initiating events in a typical VVER-1000 nuclear reactor are utilized in SAPHIRE code. The results present that while the STI varies from 672 to 1440 hours the value of CDF from L-LOCA initiating events increases from 4.274E-07to 4.951E-07.
