Pedzisa mutsara unotevera: Mamwe manyuko anogadzirwa nomunhu anobatsira zvishoma pazvose. Miedzo yezvombo zvenyukireya yomumhepo yakabudisa inenge 111<unk>185 PBq. Tsaona yomuna 1979 pa
Three Mile Island simba renyukireya rakasunungurwa pamusoro. Tsaona yeChernobyl yakabudisa anenge 35 PBq, uye tsaona yeFukushima Daiichi yakabudisa inofungidzirwa kuti 44<unk>84 PBq.