Physical plant or mechanical plant (and where context is given, often just plant) refers to the necessary infrastructure used in support and maintenance of a given facility. The operation of these facilities, or the department of an organization which does so, is called "plant operations" or facility management. It should not be confused with manufacturing plant.
Plant usually includes air conditioning (both heating and cooling systems and ventilation) and other mechanical systems. It often also includes the maintenance of other systems, such as plumbing and lighting. The facility itself may be an office building, a school campus, military base, apartment complex, or the like.[1]
In broadcast engineering, the term transmitter plant is the part of the physical plant associated with the transmitter and its controls and inputs, the studio/transmitter link (if the radio studio is off-site), the radio antenna and radomes, feedline and desiccation/nitrogen system, broadcast tower and building, tower lighting, generator, and air conditioning. These are often monitored by an automatic transmission system, which reports conditions via telemetry (transmitter/studio link).
Physical Plant is also a psychedelic rock band which formed at New College of Florida in 2009, and released their debut EP, Are They Dangerous?for free on Oct 30th 2011.[2]