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Boiler Starting Procedure - Checks and Techniques

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Learn the practical way of starting a boiler on board a ship. Also, know about the precautions that are to be taken before starting the boiler.

  The operating procedure of a boiler depends on the type and the manufacturer's instruction. Yet, there are few common points that should be kept in mind while operating any type of boiler on board a ship. So let’s get down to some basic boiler operation training and the general procedures for operating a boiler are as follows. Before starting the boiler The following things should be checked thoroughly before starting the boiler:
  • All the up-takes for the exhaust gases should be checked properly for a clear flow and to prevent any kind of obstacle. All the dampers should be checked for open position. All the vents should also be kept open.
  • All feed water connections, combustion air connections and pressure gauges should be opened or checked for proper working condition.
  • Alarms should be checked for sound and proper working condition.
  • The connections to the superheater and those in between the superheaters should be opened fully to provide free the steam flow.
  • All the boiler water drains and blow-down cocks should be properly closed.
  • The boiler should only be filled with deaerated water till slightly below the working level.
  • All the header vents should be closed to prevent water leakage.
  • Water level in the economizer should be checked and the vents should be shut off after blowing out air.
  • Forced draft fans should be checked for speed and sound.
  • Fuel oil system should be checked for any closed valves and the fuel oil should be adequately heated before circulation to prevent any kind of pipe blockage.
  TEXT C IRREGULARITIES IN OPERATION, CAUSES AND REMEDIES
S Y M P T O M C A U S E R E M E D Y
  The water level in the boiler rising   1. Faulty automatic water regulating arrangement.     2. Penetration of solid particles under the water level regulator.   1. Repair the automatic water regulating arrangement or change to manual control of the water level.   2. Shut off the cut-off feed valve, dismantle the water level regulator, remove the particles from the valve seat and the disc.  
  Loss of water level   1. Faulty automatic water level regulator.     2. The blow down valves are not tight enough.     3. The boiler tubes and manifolds are not tight.   4. Faulty feed pump.   1. Repair the regulator or change to manual control of the water level.   2. Shut down the boiler, let it cool, drain the boiler, repair or replace the valve.   3. Shut down the boiler for repairs.   4. Eliminate the fault and put the spare pump in operation.  
S Y M P T O M C A U S E R E M E D Y
Safety valve is closed 1. Steam pressure in the boiler is rising.     2. Faulty safety valve.   3. Wrong adjustment of the safety valve. 1. Lower the steam pressure to the required level.   2. Shut down the boiler, repair or replace the safety valve.   3. Adjust the safety valve to the required pressure.  
  The boiler will not light 1. There is some water in the fuel.   2. Faulty oil burning arrangement.   1. Drain the sediment out of the fuel tank.   2. Repair or replace the oil burning arrangement.
  Boiler automatic operation program is effected wrongly Faulty automatic system Eliminate the fault or change to manual control.    

Vocabulary

faulty – неисправный

penetration – проникновение

cut-off valve – запорный (секущий) клапан

valve disc – тарелка клапана

to shut down – выключить; остановить

to light – зажигать

sediment – осадок; отложение


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