 Nyora kupfuurira kweiyi ndima - Nokuda kwekuparadzaniswa kweuranium-235, zvigadzirwa zvinoputika zvinoputika zvinosanganisira isotopes ye iodine, caesium, strontium, xenon uye barium. Ngozi yacho inoderera nokufamba kwenguva. Nzvimbo dzaichimbova nenzvimbo dzine mwaranzi dzaigona kuuraya vanhu, dzakadai seChernobyl Nuclear Power Plant pazuva rokutanga kwenjodzi yachouye nzvimbo dzokutanga dzokubhomba mabhomba enyukireya kweU.S. muJapan maawa matanhatu pashure pokuputika zvino dzakachengeteka zvikuru nemhaka yokuti mwaranzi yechienzi yaderera kusvika kumwero wakaderera. 