Mill Fire

Mill Fire
a) Fire in mill under shut down:
 Isolate the mill totally from air side by closing cold/hot air dampers & gates and mill seal air valves.

 Close Feeder outlet gate & its seal air valve
 Keep the mill MDV closed and also reject doors closed.
 Charge high temperature steam for inerting & quenching fire.
 If it is uncontrollable, use water for quenching fire in control way.
CAUTION:
Preferably water or any other liquid is not to be used , as it may crack the
grinding elements.
b) Fire in running mill:
 Bring down the temperature by admitting the cold air. Reduce the
air flow and increase the coal feeding. When mill outlet
temperature starts dropping and fire in mill is extinguished. Normal
fuel/air flow/temperature can be maintained.

 If the fire is uncontrollable still, stop the mill immediately
and follow the instruction as in (a) or stop the mill & make air
flow zero. Start feeder only (take start permissive) & fill the
Pulverizer fully. When fire in mill is extinguished , stop the
feeder. PTW to be issued for coal removal from Mill & its

inspection.