Emergency Shutdown

Emergency Shut Down.
Extra Low Water Level-I D fan, F D fan/s and Stoker/s Motors Stopped.
If this occurs, the selected feed pump should be in operation because the water level is below normal. The fire will be dying because the fans and stoker motors have stopped .To shut down the boiler, proceed as follows.
1 Close the main steam stop valve.
2 Set the pump selection switch to the stand-by pump. Check the feed pump on lamp ( green ) illuminates and that the pump is operating.
3 Remove the grate indicator disc and cover.
4 Remove the shear pin.
5 Connect the crank handle to the squared end of the worm shaft and rotate the grate until the ignition line is visible under the ignition arch ( this can be seen through the spy hole in the ignition arch ).
6 Set the I D fan and F D fan manual / Auto switches to panel control.
7 Set the single-knob combustion control unit control regulator to minimum.
8 Set the I D damper control regulator to maintain a slight draught above the fuel bed. The draught gauge should read approximately minus 3 pa.
9 Inform the person responsible for the boiler about the emergency shut down condition.
10 Check the feed water system. If the water level cannot be restored to normal within 15 minutes, remove the fire from the grate as follows;
a Close the coal cut-off gate.
b Open the guillotine door fully.
c Use a rake to pull the un-burnt coal off the front of the grate and to push the
live coal off the rear of the grate into the de-ashing system.
d Remove all coal and ash from the boiler.
e At the control panel turn the main isolator switch to the off position.
f Close the feed water check valve on the boiler.