GMRT Smoke &
Fire Alarm System is installed in all 30 antennas and it is working fine
in all antenna. It is consists of Ionisation Smoke Detectors, a Control
Panel and an electric siren. This system is monitoring smoke and fire
for three zones-one is above the ABR rack, second is above the Servo
rack and third is above the Electrical Distribution Panel located just
outside the antenna shells. Any one of this detector sense smoke and
fire produces signal and hence it breaks the electrical loop
connected to Control Panel there by it activates the power circuit to
drive the electric siren. At the same time it gives informations to the
Control Room at the CEB.
Smoke/Fire Alarm system monitors any smoke in the Antenna shell and
transmits warning signal to the Control Room if smoke is detected.
# The System
generates a warning Siren at the Antenna site as well as in the Control
Room and the Antenna name is flashed in the computer screen.
# System Sensor
make Americium-241 based ionization Smoke Detector-1412B is used as the
# Three Smoke
detectors are installed in each Antenna site, one above the Servo System
racks, one above the Receiver System racks and one above the Electrical