Dee ihe ọzọ maka paragraf a - Ma mmanụ ụgbọala ma ihe mkpuchi nwere ike ịba ụba. Ihe mkpuchi na-ekpuchi mmanụ ọkụ iji mepụta ntụpọ mmanụ ọkụ ma nwee ike ịkpụzi ya. Ọ bụ ihe dị mma iji gas helium mejupụta oghere dị n'etiti mmanụ ọkụ na mkpuchi iji kwe ka kọntaktị dị mma dị n'etiti mmanụ ọkụ na mkpuchi. N'oge eji ego nke gas n'ime mmanụ ụgbọala pin nwere ike dịkwuo n'ihi na nke e guzobere nke ọma gas (krypton na xenon) site fission usoro. Ọ bụrụ na ihe ọghọm Loss-of-coolant (LOCA) (dịka Three Mile Island
) ma ọ bụ ihe ọghọm Reactivity (RIA) (dịka Chernobyl ma ọ bụ SL-1) na-eme mgbe ahụ okpomọkụ nke gas a nwere ike ịrị elu. Ka a na-emechi mkpọ mmanụ ọkụ, nrụgide nke gas ga-abawanye (PV = nRT) ma ọ ga-ekwe omume imebi ma gbajie mkpuchi ahụ. Achọpụtala na ma corrosion na irradiation nwere ike ịgbanwe Njirimara nke zirconium alloy ejikarị dị ka mkpuchi, na-eme ka ọ na-emebi emebi. N'ihi ya, nnwale ndị e ji ọkpọkọ ndị e ji zirconium alloy mee bụ ndị a na-emebeghị ihe nwere ike iduhie mmadụ.