How to Handle Both Forced Draft Fans Trip in Running Boiler

Boilers have forced draft (FD) fans to supply air for combustion of fuel. Any trip of major equipment in boiler causes the boiler parameters to vary widely before it stabilizes depending upon the action taken by the operator. The important factors to be understood in a trip of equipment in a boiler are mainly four, the specific cause of trip, plant response to the trip, immediate operator action required and immediate local operator action. The boiler will have to be prepared for light up immediately. Any delay in this action within a very short period can cause lot of problems and loss for the plant. The local operator will have to perform a quick task of restoring things in the locale and communicate to the boiler control room.