Reactor room

The reactor room aboard the Enterprise in 2285

The reactor room was a location responsible for controlling and monitoring reactors, such as warp reactors on starships.

Xyrillian ships had a reactor room which monitored the warp reactor and warp coils. (ENT: "Unexpected")

The PXK pergium reactor for the Janus VI colony was controlled from a reactor room. (TOS: "The Devil in the Dark")

Aboard Constitution II-class starships during in the 2280s, the reactor room was an isolated section of main engineering located adjacent to the vertical warp core. During normal conditions, engineers did not require special protection. The room was shielded from the rest of engineering via a transparent partition and entranceway in order to contain radiation leaks. The circular doorway which served as the room's entrance could be manually controlled by a nearby console when radiation containment was active. The room contained several system monitors.

In 2285, the USS Enterprise had taken heavy damage and could not attain warp speed without manually venting radiation. Montgomery Scott did all he could before the radiation forced him out, requiring Captain Spock to sacrifice his own life making the repair. (Star Trek II: The Wrath of Khan)

The reactor room was not named on screen, but was named in the script. [1]

Aboard Deep Space 9, the main fusion reactor, reaction stabilizers, and laser fusion initiators were typically controlled from the reactor room. Though, when Gul Dukat's counter-insurgency program took control of the station's systems in 2371, Jadzia Dax suggested disengaging the laser fusion initiator from a control junction on level 34. (DS9: "Civil Defense")

A cut line from the script of Star Trek IV: The Voyage Home referred to the nuclear fission reactor area aboard the aircraft carrier USS Enterprise as the reactor room. [2]