<prompt> Qedela lo musho olandelayo: Kokubili uphethiloli nokumbozwa kungakhula. Ukumboza kuhlanganisa uphethiloli ukuze kwakheke iphini likaphethiloli futhi kungenziwa kushintshwe ukuma. Kuyinto evamile ukugcwalisa igebe phakathi kukaphethiloli nokumbozwa nge-helium gas ukuvumela ukuxhumana okungcono kokushisa phakathi kukaphethiloli nokumbozwa. Phakathi nokusetshenziswa inani legesi ngaphakathi kwephini likaphethiloli lingakhuphuka ngenxa yokwakheka kwamagesi ayigugu i-krypton ne-xenon ngenqubo yokuhlukaniswa. Uma ingozi yokulahleka kokupholisa i-LOCA isib.  <response>: I-Three Mile Island noma i-Reactivity Initiated Accident i-RIA isib. iChernobyl noma i-SL-1 yenzeka khona-ke izinga lokushisa lale gesi lingakhuphuka. Njengoba ipini likaphethiloli livalwa ingcindezi yegesi izokwanda PV nRT futhi kungenzeka ukuba i-cladding iphenduke futhi iqhume. Kuye kwaphawulwa ukuthi kokubili ukugqwala nemisebe kungashintsha izakhiwo ze-zirconium alloy evame ukusetshenziswa njenge-cladding, kuyenze ibe brittle. Ngenxa yalokho, ukuhlolwa okusebenzisa amashubhu e-zirconium alloy angashiswa kungaholela ekukhohlisweni. 