Plumbness & Roundness(API 620)
Plumbness & Roundness(API 620)
(OP)
Hello,
I am looking for complete Procedure of measuring Plumbness & Roundness setforth in API 620 with details preferably with photos.
Thanks in advance,
Pardiss
I am looking for complete Procedure of measuring Plumbness & Roundness setforth in API 620 with details preferably with photos.
Thanks in advance,
Pardiss





RE: Plumbness & Roundness(API 620)
Steve Braune
Tank Industry Consultants
www.tankindustry.com
RE: Plumbness & Roundness(API 620)
Actually, there are some 60 m3 Bulk tanks of drilling plant, and i'd like to calculate their permissible plumbness and roundness of them as per API 620.
If there is any further information you require about mentioned tanks, let me know.
Yours,
Pardiss
RE: Plumbness & Roundness(API 620)
Steve Braune
Tank Industry Consultants
www.tankindustry.com
RE: Plumbness & Roundness(API 620)
yours,
Pardiss
RE: Plumbness & Roundness(API 620)
If you take a new "perfect" tank, and start cutting out seams and rewelding them, or removing plates and rewelding them, you'll induce a lot more distortion than was done in the initial building of the tank. When the tank is being built, and you weld one seam, other edges of that plate are free to move somewhat, but not so when it's all welded out. This makes it difficult to improve a tank by additional work.
One of the common ways to round up a tank is to weld stiffeners in it. But the API-650 interpretation of Nov. 9, 1994 prohibits this as a means of achieving tolerances.
If I remember correctly, API-653 allows higher tolerances for tanks that have been cut down and re-erected, and you might want to consider applying these tolerances.
RE: Plumbness & Roundness(API 620)
RE: Plumbness & Roundness(API 620)
RE: Plumbness & Roundness(API 620)
It would be highly appreciated to show me How.
Thanks in advance!