Boiler: Boiler means any closed vessel exceeding 22.75 liters in capacity and which is used expressively for generating steam under pressure and includes any mounting or other fitting attached to such vessel which is wholly or partly under pressure when the steam is shut off.

Boiler: Boiler Specification:Rating:

Steam:Purpose Saturation Temperature water and steamHeat sensible, latent and superheatEffect of Pressure Purpose of evaporator, super heater, re-heater and attemperator

Source of Heat:Fuel Combustion and role of oxygen Furnace Burner Excess air

Source of Heat:Flue gas and heat transfer Draught Soot Blower Economizer and air pre-heater Chimney and exit temperature

MountingsLevel gauge glass Safety Valve Feed check valve Steam stop valve Pressure gauge

MountingsVent valve Blow down valve Drain valve Manhole & HandHole Explosion DoorFusible Plug

Distribution Common steam header Parallel operation Steam trap water hammer

Sectional view of a twin drum natural circulation Boiler Type BHEL # VU 40Steam DrumBank TubesMud / Water drumSuper HeatersGoose Neck FormationWater Wall