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Installation of MISSION™ OC boiler
General
This chapter describes the work procedures which should be followed during installation of the MISSION™ OC boiler.
Corrosion preventive initiatives
When the boiler leaves the factory corrosion preventive initiatives are taken to ensure the state of the boiler during transportation and intermediate storage. In the following section the corrosion preventive initiatives are briefly described.
Cleaning of internal and external surfaces
Internal and external surfaces are free from corrosion, grease, iron scale, and other impurities. This ensures that the surface treatment work is carried out without the risk of subsequent scaling.
External surfaces
External surfaces are painted with a thin layer of primer.
Furnace and smoke uptake
The furnace of the boiler plate is painted with a thin layer of primer.
Furnace tubes, tubes in the convection part, and smoke outlets are painted on visible surfaces.
Tubes inside cleaning doors are spray-painted.
Visible surfaces in the smoke uptake are spray-painted.
Water and steam side
Internal surfaces on the water/steam side are treated, by adding an inhibitor to the water during pressure test.
After pressure test of the boiler the water is drained and a powdered inhibitor is added.
The powdered inhibitor provides sufficiently preservation during six months. At storage beyond this period co
General
This chapter describes the work procedures which should be followed during installation of the MISSION™ OC boiler.
Corrosion preventive initiatives
When the boiler leaves the factory corrosion preventive initiatives are taken to ensure the state of the boiler during transportation and intermediate storage. In the following section the corrosion preventive initiatives are briefly described.
Cleaning of internal and external surfaces
Internal and external surfaces are free from corrosion, grease, iron scale, and other impurities. This ensures that the surface treatment work is carried out without the risk of subsequent scaling.
External surfaces
External surfaces are painted with a thin layer of primer.
Furnace and smoke uptake
The furnace of the boiler plate is painted with a thin layer of primer.
Furnace tubes, tubes in the convection part, and smoke outlets are painted on visible surfaces.
Tubes inside cleaning doors are spray-painted.
Visible surfaces in the smoke uptake are spray-painted.
Water and steam side
Internal surfaces on the water/steam side are treated, by adding an inhibitor to the water during pressure test.
After pressure test of the boiler the water is drained and a powdered inhibitor is added.
The powdered inhibitor provides sufficiently preservation during six months. At storage beyond this period co
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