I would like to ask about the classification of anti-corrosion and insulation protection layers for underground oil tanks in gas stations
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I would like to ask everyone about the methods that should be used for external anti-corrosion protection of underground oil tanks in gas stations, as well as how the grades of such anti-corrosion and insulating protective layers are determined. Thank you. This post was last edited by kaminoCMY on 2008-5-26 09:09.]
Underground storage tanks can adopt a combined anti-corrosion method of external anti-corrosion coating plus cathodic protection. Anti-corrosion coatings for underground storage tanks typically use thick-paste types, and the grade of such coatings is generally determined by their thickness.
It is recommended to use extra-high-grade corrosion protection. That is: asphalt primer-asphalt-glass cloth-asphalt-glass cloth-asphalt-glass cloth-asphalt-glass cloth-asphalt-glass cloth-asphalt-polyvinyl chloride industrial membrane. The thickness of each layer of asphalt is approximately 1.5 millimeters, with a total thickness of 7 millimeters or more.
Reference can be made to GB 50393-2008 Technical Code for Corrosion Prevention of Steel Oil Storage Tanks: http://bbs.hcbbs.com/viewthread.php?tid=245229&highlight=GB%2B50393. 4.1.5 The coating protection system for crude oil storage tanks shall meet the following requirements:. . . . . The outer wall of the cave crude oil storage tank should be coated with a water-resistant anti-corrosion coating; the primer should be a zinc-rich anti-corrosion coating, while the topcoat can be an epoxy or polyurethane-based anti-corrosion coating. The dry film thickness of the coating should not be less than 300 μM. . . . . 4.2 Cathodic protection: . . . .