Related to commercial building inspections.
Boilers usually found in basements or auxiliary equipment buildings. They are found where hot water or steam is used to provide heat (rather than hot air.) Boilers in buildings are usually low pressure and thus lower risk than power boilers found in electric generating plants and locomotives and boats. A boiler can heat water and send it out as hot water or it can heat water to steam and send it out as steam which condenses and gives up heat to the room and the water drains back down to the boiler for reheating. If a boiler heats a large amount of water, there is a risk of a large amount of energy being in the water available for steam explosions. Therefore, a flash boiler is sometimes used where only enough water is admitted to the boiler to be flashed to steam to meet needs. The former boiler (water) operates at lower pressure and temperature since the tubes are full of water at the boiling point at what ever pressure the system operates at while the later (flash steam) has hot tubes (at least several hundred degrees higher).
They can blow up if the pressure in the boiler gets to high. They can release very hot water or very hot steam. They are normaly found in large commercial building or industrial plants.
