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  1. Skolde

    API 653: Out-of-plane settlement for small diamenter tanks

    gr2vessels, thanks four your thread. My condolences on the loss of Steve Braune. JStephen, When you change the D and H, you change indirectly the ratio L^2/H. When you say that “the allowable settlement isn't that much different than on the larger tank”, what actually happens is that you...
  2. Skolde

    API 653: Out-of-plane settlement for small diamenter tanks

    Hi all, According to API 653, Annex B, for settlement measurements, a maximum spacing of 32 ft around the circumference must be applied. There must be at least 4 equally spaced diametrical measurements lines (8 measurement points). When I have large diameter tanks, the above rule works good...

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