<prompt> Qedela le nkulumo elandelayo: Phakathi naleso sikhathi, leli hlathi laliphinde lisize ekwakhiweni kwe-reactor yesikebhe sangaphansi kwamanzi sokuqala emhlabeni esisebenza ngamandla enuzi, i-U.S.S. I-Nautilus, eyahamba ibanga elingaphezu kwamakhilomitha angu-951 090 olwandle. Imodeli elandelayo ye-reactor yenuzi kwakuyi-Experimental Boiling Water Reactor, eyandulela izitshalo eziningi zanamuhla zenuzi, ne-Experimental Breeder Reactor II EBR-II, eyayipholiswa nge-sodium, futhi yayihlanganisa indawo yokuvuselela uphethiloli. I-EBR-II kamuva yashintshwa ukuze ihlolwe eminye imiklamo yama-reactor, kuhlanganise ne-reactor ye-neutron esheshayo futhi, ngo-1982, i-Integral Fast Reactor concept - umklamo wezinguquko owawusebenzisa kabusha uphethiloli wawo, wanciphisa imfucuza yawo ye-athomu futhi wamelana nokuhlolwa kokuphepha kokuhluleka okufanayo okwabangela i-Chernobyl kanye ne-Russian Nuclear Power Plant.  <response>: Izinhlekelele zaseThree Mile Island. Nokho, ngo-1994, iCongress yase-U.S. yayeka ukuxhasa ngemali ingxenye enkulu yezinhlelo zenuzi zase-Argonne. 