| ICBM | Part of a nuclear arsenal: abbr. |
| ASUB | Part of a nuclear arsenal |
| SAMS | Antiaircraft arsenal: abbr. |
| REACTOR | Clergyman touring a part of a nuclear power station (7) |
| CORE | Remove central part of a nuclear reactor |
| URANIUMCRUSHER | Part of a nuclear reactor that does some serious flattening? |
| SMASHER | Part of a nuclear research facility |
| ISOTOPE | Part of a nuclear family? |
| ROD | Part of a nuclear reactor |
| KIM | Despot with a nuclear arsenal |
| SCORES | Nicks part of a nuclear reactor carried in ship's hold (6) |
| CORVETTE | Review temperature maintained by part of a nuclear reactor in warship (8) |
| RODS | Parts of a nuclear reactor |
| MIRV | Part of the U.S. nuclear arsenal |
| GROUNDZERO | A point on the surface of land or water at or directly above or below the centre of a nuclear explosion |
| CHERNOBYL | A city in Ukraine; site of a nuclear power station accident in 1986 (9) |
| THREEMILE | And 21 Location of a nuclear generating station on the Susquehanna River in Pennsylvania, US, noted for a partial meltdown in 1979 (5,4,6) |
| THREEMILEISLAND | Location of a nuclear generating station on the Susquehanna River in Pennsylvania, US, noted for a partial meltdown in 1979 |
| ISLAND | Location of a nuclear generating station on the Susquehanna River in Pennsylvania, US, noted for a partial meltdown in 1979 (5,4,6) |
| MELTDOWN | What is the melting of the insulation of a nuclear reactor called (8) |
