The most important reasons why steam is preferred in the industry are; is a very good heat carrier, heat transfer properties are particularly high due to phase change and very easy to transmit and does not need any pumping system.

On one side of the surface of the water as a fluid receiving heat on the other side of the combustion of a fuel that produces heat as a result of the flame-smoke gases circulated in the closed pressure vessels are called steam boiler.

In modern facilities, the boiler has been a great boon as an economical and fast energy source for many enterprises with the use of liquid-gas fuels. As a result, the steam boiler is used in the plants with large steam consumption and sudden steam extraction.

Steam boilers are boilers in which any liquid is boiled to obtain steam. Steam boilers are generally used to obtain steam from water. When heated, the water boils and begins to evaporate. Water vapor diffuses to a much larger volume than the liquid state of water. When boiling water in an open area, it reaches a volume of 1.700 times the volume it occupies in liquid form. However, as the closed containers do not allow such expansion, the steam which wants to expand presses the inner surface of the container. The higher this vapor, the higher the pressure. However, there is a certain pressure limit that steam boilers can withstand safely. If the pressure exceeds this limit, there is a risk of explosion. In order to ensure that the boiler does not exceed the determined pressure safety limit, all steam boilers are provided with a safety valve which releases excess steam.

In the first steam boilers, the amount of pressure rarely exceeds 1.7 times the atmospheric pressure. Until the 1860s, the production techniques were not sufficient, so it was not exceeded 3 floors. In the 1900s, up to 20 atmospheres were reached. Today, boilers with a pressure between 40 and 50 atmospheres are widely used. In the industry, there are pressurized steam boilers over 100 atmospheres.

Steam boilers in the class of pressurized equipment are explosion-threatening devices which, when not properly supervised or used correctly, present a serious risk to life and property safety. The Regulation on the Health and Safety Conditions in the Use of Work Equipment issued by the Ministry of Labor and Social Security is included in the Annex 3 Maintenance, Repairs and Periodic Inspections, under the heading Pressure Vessels and Installations.

Accordingly, inspection and controls of steam boilers must be carried out at least once a year. It is also a must for these inspections and inspections to be carried out by mechanical engineers, machine technicians or high technicians. Otherwise, neither the inspection and the inspection will have a validity, nor will the edited reports have any meaning.