Preservation of boiler when not in use

        1. Preservation of boiler when not in use

          2. Dry preservation of boiler...

          Boiler preservation procedure pdf

        2. Boiler preservation chemicals
        3. Dry preservation of boiler
        4. Boiler wet preservation procedure
        5. For dry preservation of boiler must be cleaned properly and dried thoroughly, since the moisture may causes corrosion of metal surface.

          6. Boiler Preservation Methods Dry and Wet

          Boiler preservation is required when boiler is out of service or in shutdown condition for a long period to protect boilers internal surface from corrosion and atmospheric oxygen.

          There are two types of boiler preservation methods each of them is used in specific conditions.

          1. Wet preservation of boiler
          2. Dry preservation of boiler

          Boiler preservation through nitrogen method is also used in power plant boilers.

          These methods are designed to limit corrosion caused by the normal range of boiler and atmospheric contaminants.

          Wet Preservation of boiler

          If Boilers are required in stand by condition for sudden and quick demands of steam are preserved by the wet method.

          This method is also used for large boiler units which are difficult to drain.

          Total Boiler pressure parts economiser, steam drum, water walls, super heater tube are filled with feed water having high concentration of Hydrazine (200 PPM).

          Such high concentration of hydrazine ensures, there is no dissolved oxygen available in feed water. Boiler is kept under pressure, so