Biswajit Das, Debabrata Dey
I am working at bakreswar thermal power project in control and instrumentation department. in our unit is suffering from flame failure without any physical change in parameter like coal feeding, total air flow, furnace pressure, primary & secondary air flow and oxygen percentage. it is also observed that flame intensity at all 5 elevation is sharply decreases at the time of flame failure and flame flickering frequency also decrease at that time. after flame failure trip furnace pressure and air flow rapid changes came into service which cleared a combustion problem occurred inside the boiler, our flame scanner is safe flame type.