With safety in mind the Purge Pressurisation, Fire and gas system was created to keep contained areas safe from fire and gas hazards in the offshore oil industry.
The system consists of a fan motor, flow sensor, pressure sensor, gas detector and a fire detector, the system is started by pressing the fan start pushbutton on the front panel this operates the fan motor, once the fan starts it operates a flow switch and the purging indicator appears on the front panel, as soon as the area is pressurised the purged indicator will illuminate and the main start will be allowed to operate enabling the power supply to the area.
If there is a loss of pressure / flow or if the smoke / gas detectors detect a fault over a certain level an alarm will sound, if the fault persists the power to the area is shutdown, if the fault clears normal operation is resumed.
The system is also equiped with a bypass keyswitch to inhibit the fire and gas system detection system for operation in safe areas.