Nuclear reactor

Nuclear reactors were devices which sped up the rate of decay in radioactive materials in a controlled manner. They were usually found in nuclear power plants.

In 1939, the War Lords used a nuclear reactor to power their base at Drachensberg. The Seventh Doctor set the reactor to overload, destroying the castle and the advanced technology contained in it. (NA: Timewyrm: Exodus)

In the 1970s, Sarah Jane Smith, possessed by Eldrad, took his hand into the nuclear reactor room at the Nunton Experimental Complex. (DW: The Hand of Fear)

In 1986, the nuclear reactor at Chernobyl underwent a meltdown. (DWM: Black Destiny)

Also that year, Snowcap was powered by a nuclear reactor. Ben Jackson helped devise a plan to destroy the Cybermen by using the reactor fuel rods. (DW: The Tenth Planet)

In 2006, Blon Fel-Fotch Passameer-Day Slitheen plotted to destroy Earth by having the nuclear reactor at Blaidd Drwg undergo a meltdown. (DW: Boom Town)

Miss Myers connected a member of the metalkind to a nuclear reactor to give them enough power to summon their species to Earth so that they would be destroyed by Sky and the fleshkind would be victorious in their war. Rani Chandra described the complexity of shutting down a reactor to Clyde Langer as "James Bond meets Mario" but the two succeeded in shutting the reactor down before the metalkind arrived. (SJA: Sky)

In 2199, Lord Haldoran had control of a nuclear reactor. His adviser Estro diverted some of its power to activate DA-17. (EDA: Legacy of the Daleks)