
The Hydrant System of Fire Protection
essentially consists of a large network of pipe, both underground and over ground
which feeds water to a number of hydrants valves – indoor as well as outdoor and
to a number of outdoor type fixed installations. Water in the pipe network is kept
pressurised by hydro-pneumatic tank and jockey pump arrangement. These hydrant valves
are located throughout the entire powerhouse and other buildings. Hosepipes of suitable
lengths fitted with standard accessories like branch pipes, nozzles etc. are kept
in “Hose Houses” (for outdoor hydrants) and in “Hose Boxes” (for indoor hydrants).
When the fire hoses are coupled to the hydrant valves through the instantaneous
coupling, jet of water is directed towards the fire.