Fire extinguishing system.

摘要

The system has a number of powered vehicles that move along a rail fixed along the tunnel and can dispense either water or foam on the fire. A remote control system located in a nearby fire station is linked to the fire sensors in the tunnel and will automatically dispatch the nearest located vehicle. The vehicles move along a U shaped rail which is compartmentalised and contains their water supply. The compartments have valved inlets for a supply of water from a pipe running along the tunnel. Sensors monitor the water level in the compartments.