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 2

System fault tree with top event “containment isolation”.

Basic event	Components failure identification	Probability
1	Gates of the ventilation system fails	1.010 × 10^−4
2	Doors fail to remain closed	1.440 × 10^−5
3	Air pump # 1 fails to stop	3.240 × 10^−4
4	Air pump # 2 fails to stop	3.240 × 10^−4
5	Air pump # 1 fails to stop	3.240 × 10^−4