1、 625022014 IEC 62502:2010Analysis techniques for dependability Event tree analysis (ETA)(IDT) 1 - - ( ) - , 42 10 3 - 24 2014 . 1429-4 62502:2010 . (ETA) (IEC 62502:2010 Analysis techniques fordependability Event tree analysis (ETA). - 1.52012 ( 3.5). - , 5 1.02012 ( 8). ( 1 ) , -.() - . , - (www.go
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3、C 60050-191:1990, International electrotechnical vocabulary; chapter 191:dependability and quality of service) 61025:2006 (FTA) IEC 61025:2006, Fault tree analysis (FTA)3 , , 60050-191, .3.1 3.1.1 (node): , . .1)ETA Event tree analysis.1 625022014 3.1.2 (common cause): ( ). 61025:2006, 3.15 , , , .
4、 , ), ,.3.1.3 (event): . 61025:2006, 3.83.1.4 (headings): , , - .3.1.5 (initiating event): , - , .3.1.6 (mitigating factor): , , - . , , , , , , , . .3.1.7 (outcome): - , .3.1.8 (sequence): , .3.1.9 , (top event): -, . . ( ) .3.1.10 (branch): , .3.2 3.2.1 CCA1) ; ;FMEA2) ;FTA3) ;IRF4) ;LESF5) : (L
5、E) - (SF);LOPA6) ;RBD7) ;PRA8) ;PRA/PSA9) /;SELF10) : (SE) (LF).1)CCA Cause-Consequence Analysis.2)FMEA Failure Mode and Effects Analysis.3)FTA Fault Tree Analysis.4)IRF Individual Risk of Fatality.5)LESF Large Event Trees (LE), Small Fault Trees (SF).6)LOPA Layers Of Protection Analysis.7)RBD Relia
6、bility Block Diagrams.8)PRA Probabilistic Risk Assessment.9)PRA/PSA Probabilistic Risk/Safety Analysis.10)SELF Small Event Trees (SE), Large Fault Trees (LF).2 6250220143.2.2 (,);A (,);IE ();OIE, A,B ,(-,)(.-3);c97,c115 ();+ ;. ;P(A)A.P(A) 0,1,-,.25;P(IE.A. B.C),IE,BC-;P(A|IE)A,IE;f (,.25);fc100 c100.4 , , -,-. , , . .A.,.,-. , -.,-. -(-),. , (). , , , , ,- . 8 , (1/) . - , , .,62508236242922.,- 5. . ,- . -, . , , . FTA, FTA .6,3 625022014 , (CCA) (LOPA). CCA . LOPA . 7 , - . , 7 (, ) . - . 1 . , - . 1 9 . A . B .5 5.1 . a) ;b) - ;c) (, ) (, ), - ;d) , ( ), -;e) , ;f) , . - ;g) ;h) - . -
