steam boiler, oil tankers, scaling, sulphur, sulfur, corrosion, competent, licensed, marine, mechanical, engineers, floating, vessels, Marine, Engineer, Engineering, Shipping, Ship, Equipment, Machinery

Steam Boiler

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steam boiler, auxiliary boiler, oil tankers, scaling, sulphur, sulfur, corrosion, competent, licensed, marine, mechanical, engineers, floating, vessels, Marine, Engineer, Engineering, Shipping, Ship, Equipment, Machinery


Firing boiler burner


Steam drum containing tube ends


Interior of water tube boiler drum


D-type water tube boilers fit in very well in the engine room space

Boiler Inspection
Boiler Interlock
Boiler Soot Blower

Steam Boiler

Steam boilers are used either as main machinery for propulsion, as in Steam Ships, or as auxiliary machinery in Motor Ships. 

Because of this difference, the size and pressures of the steam boilers in Steam Ships will be very much larger than that in Motor Ships. The dryness of the steam produced will also be different.

Basically, the boiler is a huge pressurized kettle, using fire to heat water to a boil and extracting the steam. The steam is used to channel heat energy from the fire to power machines, or to heat remotely located areas. 

All the steamships use water tube boilers because of the higher pressures, but many motorships use fire tube boilers for lower pressures. 

An exception is the boilers installed in oil tankers. These are often water tube boilers because of the higher demand for steam on these ships.

Care must be taken to condition the water in the boiler to prevent scaling, and corrosion, which can weaken the pressure vessel. With the use of heavy oil for fuel, it is also very important to ensure that the surfaces exposed to the fire are free of soot deposits and sulfur corrosion.

The burners usually require the most maintenance, as this is the place where the heat from the fire can carbonize the oil to form deposits.

The steam boiler is part of a closed loop steam system, whereby, after the energy of the steam is used up and it becomes water again, the latter is collected and returned back to the boiler for heating up again to steam. 

Any leakages in the system will have to be replenished with fresh water.

2004 Yoon Chee Tuck    Contact me

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