Whakakī i te rerenga e whai ake nei: I roto i te ahumahi pūngao karihi, ka tīmata te US Nuclear Regulatory Commission ki te whakamahi i ngā tikanga PRA tae atu ki te FTA i te tau 1975, ā, i tino whakawhānuihia te rangahau PRA i muri i te 1979 i te raruraru i te
E toru nga Maero o te Moutere. 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.