Calculation rules for anti-corrosion quotas
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Hello everyone: I would be very grateful if you could explain what size threshold for voids in the equipment’s anti-corrosion calculations requires that those voids be deducted. Thank you very much.
There are also many types of internal anti-corrosion treatments, but none have been found to require an area deduction: 1. Painting work instructions: The painting of various pipe fittings, valves, and the recessed areas on manholes and pipe openings is already taken into account in the project scope. 2. Rubber and plastic sheet lining projects: The amount of rubber and plastic sheets required in this chapter includes: 1. The area that needs to be covered (without deducting the areas occupied by manholes). 2. Required overlapping area. 3. Reasonable loss amount during flange flanging and material cutting.
I would like to ask about the quality standards and acceptance criteria for presulfided butyl rubber sheets. Thank you!
Reply to 3# hankeheng: You can take a look at the information available on the forum regarding rubber linings; there’s a lot of it. You might want to check the standards 90, 93, and 2001