In general, boiler or steam engine is used for the generation of electric power and industrials to work large machinery quickly, such as washing operations (the textile industry), food industry, cement factory, rice mills, etc. Many cylindrical mechanical engine machines use steam to drive and operate that equipment. Because steam includes significant power and there are two types such as High-pressure steam and Low-Pressure steam. High-pressure steam uses for drive turbines, and Low-pressure steam uses for operations and processes of boiler feed-pumps and other equipment. The boiler or steam generator is the system producing superheated steam and heated water from the fuel utilizing supplied feed-fuels; likewise, as a boiler operator, the guy who has worked the boiler application.