The ash collapse and fire extinguishing of the boiler will bring great loss to the thermal power plant. Mastering the operating condition of the boiler is very important to prevent flue ash from collapsing andeliminate the fire hazard. The analysis is made according to the accidentally fire extinguishing of HG1900Wflame boiler during operation. It takes operational control and technical transformation as preventive measures, which improves the stability of unit operation significantly.

fire extinguishing of boiler, great loss, accident analysis, preventive measures