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  • Users: kalluna
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  1. kalluna

    Tank Settlement after Moving

    Hi, We have a situation where a 20 yr old tank was moved in order to replace liner. We had an API 653 on tank in old location in 2003 and it showed several locations (3 stations) with higher than acceptable edge settlement. This summer the tank was moved. We did hydrotest, and an API inspection...
  2. kalluna

    API 650 frangible roofs/Railings at roof/tank size

    Hi, Looking for some input or suggestions as to how to handle fall restraint/railing at vertical tanks. As far as I understand from API 650, one of the conditions that must be met before having a frangile roof is that diameter of roof must be 15.25 m or more in diameter. Most of our...
  3. kalluna

    Tank roof min thickness

    What tank roof thickness criteria is used during API 653? From the section in 653 on Suitablity for Service, it sounds as if roof plates corroded to an av thickness less than 0.09 inches in any 100 inch sq area means the plats should be reapiared or replaced. Is this true then whatever the...

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