Application of PAA in EPR Nuclear Power Units

Chen Wen,Wang Zhiwu,Qing Chen,Chen Shijun,Chen Jiefei,Chen Yu,Jiang Hong,Zhang Tao

Table7 Probabilistic availability assessment result

PAA summary Failure mode Failure rate Unit Time(hours/year) UU type Shutdown overhaul time(h) Forced shutdown overhaul time h (line) Plant forced shutdown overhaul time (h/year) VVP refuse to close 0.00031 time 12 3a 62 0.2306 0.6918 close by mistake 0.0000019 h 7884 1a 14 0.2097 0.6291 ARE fail to regulate 0.0000028 h 8760 1a 17 0.3753 1.1259 refuse to close 0.0003 time 6 3a 62 0.1116 0.3348 close by mistake 0.000000308 h 8760 1a 17 0.0402 0.1206 Totalamount of single reactor (h/year): 2.902