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Hello, that's my doubt: Just a hypothetical scenario... If i have a small Diesel tank built according to API 650 (like 6m dia and 6m height),and a 500mm manhole on the shell, can I use the manhole to clean the tank? Do I really need a cleanout door to clean the tank or can i use the manhole...

Dear all, im designing a tank under api 650 annex F for academic purpose. the roof is cone type (self-supporting) with 9.5º slope Using the equation given in F.6.1 (written below) i got 0.046 mm t = (P x R)/((cos(alpha)*Sd*E) + CA t = (0.363*2.865)/(0.165*137*1) = 0.046 mm here is my data...

Dear colleagues, Could someone tell me where can I find in API 650 or 653 about tank roof repair using cold work? (for example, BELZONA)

Hi everyone, my problem is: There are several tanks and I need to standardize the double bottom installation process. It's my first time dealing with API650.I have to open some space in the shell. How I design the supports around the shell to avoid buckling? I have with me API650 and API653...