Nuclear-powered submarine accidents include the K-19 ( 1961 ) , K-11 ( 1965 ) , K-27 ( 1968 ) , K-140 ( 1968 ) , K-429 ( 1970 ) , K-222 ( 1980 ) , and K-431 ( 1985 ) accidents . Serious radiation incidents/accidents include the Kyshtym disaster , the Windscale fire , the radiotherapy accident in Costa Rica , the radiotherapy accident in Zaragoza , the radiation accident in Morocco , the Goiania accident , the radiation accident in Mexico City , the radiotherapy unit accident in Thailand , and the Mayapuri radiological accident in India
Windscale fire
Windscale fire
Nuclear and radiation accidents and incidents