Investigation of Loss of Feedwater (LOFW) Accident in the APR-1400 Using Fault Tree Analysis

Table 2

Importance analysis for CCF groups.

No.	ID	FC	RDF	RIF	Sens.	Sens. high	Sens. low
1	No flow to check valve	1.05E − 01	1.12E + 00	3.58E + 01	2.1E + 00	5.42E − 02	2.53E − 02
2	No flow to SG	1.04E − 08	1.00E + 00	3.58E + 01	1.00E + 00	2.79E − 02	2.79E − 02