<prompt> Kalima dǝwo fuwunzǝ dǝga samzǝ: Suro cidaram konnu konnube dǝn, U.S. Nuclear Regulatory Commission dǝye duluwu PRA dǝga faidatǝ badiyono suronzan FTA suro saa 1975 lan, kuru zaumaro kulashi PRA dǝga fǝlezǝna ngawo lamar 1979 ye dǝlan.  <response>: Three Mile Island dǝ. Adǝye sǝkǝ suro saa 1981 lan kitawu NRC Fault Tree Handbook NUREG0492 fǝlezǝna, kuru PRA faidatǝnzǝ kalkalro sǝdǝna suro NRCbe kǝla lamarra lamarra lamarra hawarrabe ladǝn. 