Tank floor inspection
Tank floor inspection
(OP)
Dear friends I haven´t been able to find in API 650 or 653 the tolerances for tank floor´s flatness, any one can help me?
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RE: Tank floor inspection
Hope this is what you're looking for.
RE: Tank floor inspection
RE: Tank floor inspection
RE: Tank floor inspection
Well, our API inspector accepted my sugestion to use ASTM A 6/A 6M, and the constructor accepted it having to repair, this standard gives 29 mm for this 5/16"x 1800 mm sheet. The matter here was that the material was unaceptable, and ASTM was the spec for this
RE: Tank floor inspection
ASTM A6 would apply to the plate before it is cut or welded. Additional distortion will be generated in processing the plate, and the A6 tolerances would not be applicable to a tank bottom after welding.
One of the tank standards includes a statement that out-of-plane weld distortion equal to 1% of the tank radius is not uncommon.
Usually tank bottoms will have some springy areas where they are not in uniform contact with the subgrade, and these are not objectionable.
RE: Tank floor inspection
In:
"One of the tank standards includes a statement that out-of-plane weld distortion equal to 1% of the tank radius is not uncommon."
You mean in API 650?