Water tube boiler start up procedures?

Question

Needed for licensing exam

Answer 1

http://www.spiraxsarco.com/resources/ste...

Answer 2

1. Before attempting to start up the boiler, check to ensure that all systems are in good operation condition. Items to be  given special attention are;

a. Boiler water supply and feed system

b. Fuel supply and feed system

c. Forced draft blowers

d. Steam valves, and pressure relief valves

e. Boiler casing

f. Steam drum and mud drums manhole covers, and super heater header handhole covers

g. Ensure that the level of the water in the steam drum is at half full.

h. Check to ensure that fuel spray nozzles are properly installed.

2. If all systems are OK then start up as follows;

a. Recirculate the fuel to warm it.

b. Run the force draft blower for about five minutes to purge the fire box of any explosive gas accummulation.

c. Open the fuel valve to the fuel spray nozzle.

d. Press the ignition switch.

e. If the fuel fails to ignite, close the fuel valve then repeat procedure from b.

f. After the fuel is ignited switch on the automatic combustion control.

Don't attempt to repeatedly press on the ignition switch if the fuel does not ignite on the first attempt because atomized fuel would already have accummulated in the fire box and may explode.