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Annular ring replacement rat holes

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Bgm85

Bgm85

Industrial
Joined
Jun 6, 2022
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1
Location
CA
I’m trying to find any code in api 650/653 regarding rat holes for welding annular ring butt-joints. When replacing the annular ring in an existing tank.
 
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not in either standard, not sure why you would do that.
 
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Are you trying to put a rathole on the shell to be able to weld the annular ring butt joints? I've never seen it done before.

-MrTank

ôI have not failed. I've just found 10,000 ways that won't work.ö
-Thomas A. Edison
 
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