În principiu, întregul proces are loc în reactorul nuclear, mai exact în centrul acestuia, denumit şi „zonă activă”.
În mod normal, cantitatea de substanţe radioactive eliberată este nesemnificativă şi nu pune în pericol sănătatea oamenilor. Doar în cazul unei funcţionări defectuoase, cum se întâmplă în Japonia, substanţele eliberate de reactor pot fi în cantităţi mai mari, devenind astfel nocive.
Ce este fisiunea nucleară?
Uraniul este lovit de neutroni, iar în urma acestor interacţiuni, atomii de uraniu se scindează în doi atomi (unul de kripton şi unul de bariu) şi eliberează 2 ori 3 neutroni şi o cantitate uriaşă de energie sub formă de căldură.
În România, centrala de la Cernavodă a intrat în funcţiune pe 2 decembrie 1996. Foloseşte apă grea şi uraniu îmbogăţit şi produce aproximativ 10% din totalul energiei electrice produse în ţară.
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