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Re: [MW:35059] Re: API 650 Bottom Plate Distortion

By Materials & Welding
Hello it depend of tank diameter:

API 650 2021  7.5.3   Roundness

 

Radii measured at 0.3 m (1 ft) above the bottom corner weld shall not exceed the following tolerances:

Tank Diameter m (ft)

Radius Tolerance mm (in.)

< 12 (40)                                                                              ± 13 (1/2)

From 12 (40) to < 45 (150)                                                   ± 19 (3/4) 

From 45 (150) to < 75 (250)                                                  ± 25 (1)

� 75 (250)                                                                           ± 32 (11/4)

El jueves, 6 de junio de 2024 a la(s) 3:52:12 a.m. UTC-6, Abd Ur Rehman escribió:
how much tolerance is acceptable in circumference (API650) storage tanks.

On Wed, May 29, 2024 at 12:11 PM Anand ch <chana...@gmail.com> wrote:
Dear Abd Ur Rehman,

Out-of-plane distortion equal to 1 percent of the tank radius is considered acceptable."
While that's not an API requirement, that should be a measure of industry standard, 
and that plate distraction not affected on length of the plate that is acceptable range means it will accept the bottom plate 

On Saturday 25 May, 2024 at 11:06:14 am UTC+5:30 Abd Ur Rehman wrote:
Hello everyone hope u all be fine 
my question is that , as per ur experince how much API 650 Bottom Plate Distortion is acceptable .

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