Research Article

Analysis and Estimation of Core Damage Frequency of Flow Blockage and Loss of Coolant Accident: A Case Study of a 10 MW Water-Water Research Reactor-PSA Level 1

Table 14

Uncertainty values for the fault trees.

Fault treeFREQ/YearMeanMedian95THMinimumMaximumStd Dev

CI1.440 × 10−51.440 × 10−51.440 × 10−51.440 × 10−51.440 × 10−51.440 × 10−50.000
ECCS1.024 × 10−21.024 × 10−21.024 × 10−21.024 × 10−21.024 × 10−21.024 × 10−20.000
NCHR1.001 × 10−21.001 × 10−21.001 × 10−21.001 × 10−21.001 × 10−21.001 × 10−22.248 × 10−9
NEV (FB)4.291 × 10−34.291 × 10−34.291 × 10−34.291 × 10−34.291 × 10−34.291 × 10−30.000
NEV (LOCA)4.531 × 10−34.531 × 10−34.531 × 10−34.531 × 10−34.531 × 10−34.531 × 10−31.384 × 10−9
PHR4.848 × 10−44.848 × 10−44.848 × 10−44.848 × 10−44.848 × 10−44.848 × 10−44.930 × 10−11
RPI1.010 × 10−31.010 × 10−31.010 × 10−31.010 × 10−31.010 × 10−31.010 × 10−32.974 × 10−10
RPS (LOCA)3.286 × 10−33.286 × 10−33.286 × 10−33.286 × 10−33.286 × 10−33.286 × 10−30.000