Thursday, October 14, 2010

[MW:7551] nozzles in tank fabrication

Dear members,
 
Is it mandatory to weld the nozzles on to the tank shell plating with the doubler plate? it is mud tank fabricated from 6 mm plate diameter 2800 mm. and all nozzles (6" pipies) shown on the drawings are welded  without doubler plates.
 
The construction code is not given bu I assume that this is API 650.
 
brgds,
Elshan.

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