Reliability Evaluation of NPP’s Power Supply System Based on Improved GO-FLOW Method

Table 2

The failure frequency and mean repairing time of repairable components.

Names of the units	Number of failure modes	Failure frequency (times per year)	Mean repairing time (hours)
The main steam turbine generator	1
The main offsite power	1
The auxiliary offsite power	1
Reserved diesel generator	1
The main transformer	2
		The station service transformer	2
The auxiliary transformer	2
		The main connection	1
Bus	2
		Breaker of generator circuit	1
Breaker	1
Disconnector	1	0	0