Tuhia he haere tonu mo tenei irava - I roto i te ahumahi mana karihi, i timata te US Nuclear Regulatory Commission ki te whakamahi i nga tikanga PRA tae atu ki te FTA i te 1975, me te whakawhānui nui i te rangahau PRA whai muri i te 1979 i Three Mile Island
He aha? Na tenei i arahi ki te 1981 te whakaputanga o te NRC Fault Tree Handbook NUREG<unk>0492, me te whakamahinga whakahauanga o te PRA i raro i te mana whakahaere a te NRC.