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Turtle Shelling of Vessel Head 4

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LOCBE

Mechanical
Joined
Oct 11, 2024
Messages
4
Location
US
IMG_2654_fg9cyp.jpg


Looking for an explanation as to why this vessel head looks like a turtle shell. New vessel that’s hasn’t been put into operations yet.
 
It was formed that way.

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P.E. Metallurgy, consulting work welcomed
 
With the deformation shown in the photos, is this unacceptable by ASME standards? This is a non-code vessel and I simply haven’t ever seen this.
 
Even has a belly button weld where it was pinned during the forming process.
 
Diameter, thickness, material.....?????

Regards
 
96” OD ; 375” Thk. ; SA-516-70N
 
If it is not a CODE unit (pressure is less than 15 psig), there is no problem.
This is a visual appearance when the paint is white and there is excessive lighting.

Regards
 
Thank you very much for everyone’s responses.
 
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