UPSET CONDITION IN FURNACE CAUSED BY A LIGHTNING STRIKE POWER FAILURE CAUSED RED HOT PELLETS TO BE DISCHARGED FROM FURNACE. BECAUSE OF LACK OF AIR FLOW THROUGH PELLET BED, THE THERMOCOUPLES TH AT WOULD'VE NORMALLY DETECTED THE HOT PELLETS DID NOT & RED HOT PELLETS DUMPED ONTO MD-1 CONVEYOR. THE INTENSE HEAT FROM THE PELLETS SHORTED THE THERMISTER WIRE TO GROUND & DISABLED FIRE ALAR