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THE APPLICATION OF PSA TECHNIQUES TO THE VITAL AREA IDENTIFICATION OF NUCLEAR POWER PLANTS  

HA JAEJOO (Korea Atomic Energy Research Institute)
JUNG WOO SIK (Korea Atomic Energy Research Institute)
PARK CHANG-KUE (Korea Atomic Energy Research Institute)
Publication Information
Nuclear Engineering and Technology / v.37, no.3, 2005 , pp. 259-264 More about this Journal
Abstract
This paper presents a vital area identification (VAI) method based on the current fault tree analysis (FTA) and probabilistic safety assessment (PSA) techniques for the physical protection of nuclear power plants. A structured framework of a top event prevention set analysis (TEPA) application to the VAI of nuclear power plants is also delineated. One of the important processes for physical protection in a nuclear power plant is VAI that is a process for identifying areas containing nuclear materials, structures, systems or components (SSCs) to be protected from sabotage, which could directly or indirectly lead to core damage and unacceptable radiological consequences. A software VIP (Vital area Identification Package based on the PSA method) is being developed by KAERI for the VAI of nuclear power plants. Furthermore, the KAERI fault tree solver FTREX (Fault Tree Reliability Evaluation eXpert) is specialized for the VIP to generate the candidates of the vital areas. FTREX can generate numerous MCSs for a huge fault tree with the lowest truncation limit and all possible prevention sets.
Keywords
Design Basis Threat; Vital Area Identification; Sabotage-induced Risk Assessment; Location Fault Tree; Top Event Prevention Set Analysis;
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