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we have contrated the repair including quality surveillance from third entity for quality, repair should be according API 653. Roundness only meausure one feet above bottom, so outside the area. what we are looking is distortion tolerances in API 653?' maybee in any questions queries?? i will...

how can i ask to cut, remove distortion of shell if i dont have support in API 653??

my question is the tolerance of acceptance. In API 653 i dont find any indication about tolerances of acceptance of deviation of shell to bottom weld. The FFS (API 579) is running in parallel. Banding i understand it´s not the best criteria. the deformation stars more of less 270 mm from the...

HTURKAK they tell me distortion is normal. But i dont find in 653 the tolerance for this.

My problem i do t have any poi t in 653 to clearly not accept this deformation. They use banding shell not more 13 mm. For that is acceptable according 653? We apply peaki g or banding in the weld shell to bottom?? I dont find any tolerance in 653 refering the alinement shell to bottom. With...

The bottom extends 50 mm as requested api. Some opinions tell me to cut and reweld. But where i have fundamentatuon in API? The contractor tell me that is according to API 653 as requested. Also if cut the weld but the shell will keep distortion.

the deformation stars more or less 270 mm from the bottom. roundness cannot aply because meausure is above 1 feet (out of the affected area) plumbness from astm limits 28 mm, but aproving a deformation in the last part of the shell near the critical zone semms nonsense. Tank dimensions - 19510...

a skectch of what happened https://files.engineering.com/getfile.aspx?folder=826ff0c1-a074-4a47-b3f3-d5188fe96855&file=Shell_Bottom_0811.jpg

Hello, in a repair of a tank the shell suffer a distortion in the connection to the bottom anular plate. the distortion is 360º , 9 to 13 mm (1/2") to the inside. I cannot find anything specific to this in API 653, to reference. most similar is banding between shell limit to 13 mm (1/2") in...

Snorgy, in my opinion: Connecting tanks to flare or incinerator you can have O2 inside the tank, and can achieve a dangerous situation. your explosion triangle have 2 points it only needs one more (air) VRU We have a VRU and it´s a expensive equipment to buy and maintain recapture N2 cost lot...

Hello, If i want to build/reconstruc a tank to operate with hydrocarbons i need to know if i need to install: 1) External floating roof, internal floating roof with conic roof, or simply a conic roof. We should choose in function of the need to reduce emissions There is any code that can guide...

In Portugal i can recomend some Arsopi, A. Silva Matos Amal Pemel MCAV i dont have any comercial connection to them, we frequently buy them collums,drums and exchangers

anyone???

s reading a ealier thread483-271182 about sour water feed tank and studing this question and i dont understod if: putting a floating roof+fixed roof shall keep the layer of diesel? anyone send this to the amine with results? anyone think to use API 620 instead od API 650 to design the tank with...

We actually use teflon. because i´m not sure of the stability of viton, i will keep teflon and do some tests with viton. After i will report where.

but why? because the stick problem??

hello but what about the stick of viton, after some time with in contact to aromatic components

Hello, because of leaks in emergency vent´s we are thinking of change the seal material from Teflon to Viton. The Viton allows better seal, but i think it can have the problem of stick Anyone with similar problem?

but API 650 is limeted to 17,2 Kpa in adition with Apendix F point F1.2 if the pressure is hiher we should use API 622