Coal Conveyor Fire Protections by Sakthi Fire Protection Systems

We undertake design, supply, installation, testing and commissioning of Coal Conveyor Fire Protection. Fires on conveyors are infrequent but the fire potential is considerable. In incidents, which have occurred, the damage has been severe, particularly where conveyor fires have reached and enveloped the destination e.g. Boiler house coal bunkers as in case of thermal power stations. The design of conveyors is that the wind tunneling or chimney effect is an inherent feature on inclined conveyors and this causes rapid spread of fire through the conveyors.

The major risk of fire is, for example, from the ignition of coal dust and deposits in case of Thermal Power stations, on the internal surface, walkways etc., of the conveyors or from the conveyor belt. Fire caused by friction of a defective part such as jammed roller, idlers resulting in subsequent localised overheating of the belt. Thus fires in the conveyors may arise from either of two main causes-

• Failure of part of the mechanism, usually on the idler or pulley can lead to localised overheating of the belt and eventually to ignition of the combustible dust or conveyor belt.

•  From the ignition of a quantity of split combustible dust either by self-ignition or other causes.

 

Should the belt catch fire, it can spread the fire rapidly to other areas. Certain fires generate a large volume of smoke particularly when the fire is in an advanced state, conveyors can be protected by Automatic sprinkler system installation or Medium Velocity Water Spray System with L.H.S. cables, sprinkler bulbs, thermocouples etc.