A boiler is a closed container that heats water or other fluids, which are then used for processes, heating applications, or to produce steam. Boilers come in two main types - fire tube boilers where hot gases pass through tubes surrounded by water, and water tube boilers where water passes through tubes surrounded by hot gases. Boilers have internal parts, valves, gauges, and mountings like safety valves, water level indicators, and drain valves that are directly related to pressure parts and boiler operation.

2. A boiler is a
closed container
In which water or
other fluids are
heated
To be used in
various processes or
heating applications
The heated or
vaporized fluid exits
the boiler

3. The main objective
of the boiler
to produce steam
used in different
systems on board
Goes to
And generates
mechanical energy.

5. Fire tube
boiler
Water tube
boiler
Types of boilers

6. Internal parts of boilers

7. Valves and gauges of boilers

8. Boiler mountings
Directly
related to
the pressure
parts of the
boiler
Safety valves
Main stop valve
Feed check valves
Water level indicators
Thermometers
Drain valves
Salinometer
Chemical dosing
valves
For a water tube boiler

9. Burner mounting

10. Boiler mounting
Manway assembly Hand hole assembly

11. Boiler mounting
Main stop valve