Mezue ahịrịokwu na-esonụ: Na Machị 20, 1978, nkwụsị ike nke ike maka usoro ihe na-abụghị nke nuklia nke ụlọ ọrụ ahụ mere ka onye na-emepụta steam kpochapụ (ref NRC LER 312/78-001). Nke a kpaliri nkwụsịtụ nke ihe ọkụkụ ahụ n'onwe ya. N'akwụkwọ nke 2005, United States Nuclear Regulatory Commission kwuru na ọ bụ nke atọ kachasị njọ metụtara nchekwa na United States ruo ugbu a (n'azụ
Ihe ọghọm nke Three Mile Island na ọkụ ọgbụgba Browns Ferry). Ndị ọrụ nke U.S. Nuclear Regulatory Commission (NRC) kwubiri na ntụpọ ndị dị na nhazi nke ndị ọrụ nke ụlọ ọrụ ahụ na NRC n'onwe ya maara bụ isi ihe kpatara nsogbu ahụ na a ga-edozi ya ọtụtụ afọ tupu mgbe ahụ. <unk>Na nchịkọta, ozi ahụ dị ma mara nke nwere ike igbochi oge a na-ekpo oke ọkụ; mana na enweghị mgbanwe nke ụlọ ọrụ zuru oke, a ga-atụ anya ihe merenụ,<unk> ndị ọrụ ahụ dere.