Fusion reaction subsystem
The fusion reaction subsystem was a subsystem of the impulse power system, one of the main engineering systems aboard Federation starships. This subsystem was responsible for generating the impulse power of these ships. The fusion reactors were an integral component of this subsystem. On  starships, the subsystem which generated the main impulse power was located on decks 23 to 25. The location of this subsystem was labeled on the schematic of the secondary hull of the  in 2365. (, okudagram)

Aboard the  , in the Engineering Systems Database, there was a folder for impulse reaction procedures. This folder  contained technical manuals relevant to the topic. (, okudagram)
Energy technology