API 653 What to do When Tank Exceeds Out of Plumb
API 653 What to do When Tank Exceeds Out of Plumb
(OP)
Hi folks. What are you to do when a tank exceeds the Out of Plumb measurement per API 653of 5"??? This is a 70 ft diameter x 40 ft high tank, leaning 20" on a clay soil. HELP!!!
Is there a requirement to relevel?
Is there a requirement to relevel?





RE: API 653 What to do When Tank Exceeds Out of Plumb
Refer to API-653-4.1, "an evaluation shall be made to determine its suitability for continued use".
See Annex B for more information on settlement and evaluation of settlement.
RE: API 653 What to do When Tank Exceeds Out of Plumb
RE: API 653 What to do When Tank Exceeds Out of Plumb
RE: API 653 What to do When Tank Exceeds Out of Plumb
Are all the manholes submerged?
It would be great to see a photo of this as 4 1/2 feet just sounds unreal....
If it contains anything hazardous or flammable then it definitely needs re-building IMO, but otherwise?? Tank would probably be showing signs of distress if it was in a really bad way so it might have some life left in it, but a properly supported raft foundation sounds like a good plan next time.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: API 653 What to do When Tank Exceeds Out of Plumb
Refill with the S.G 1.5 material and measure further settlement, and use that measurement to compensate on the second tank being mud jacked. Rinse & repeat.