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API Tank Blind Flange burned from plate?

API Tank Blind Flange burned from plate?

API Tank Blind Flange burned from plate?

My general ? is can I design a 12' tall x 12' dia x 3/16" thk stainless steel tank to 650 code using a 20" manway flange and blind flange burned out of 3/4" SS plate instead of a standard nozzle/flange with bolt on blind flange?

Reason would be for less expense of burning out blind from plate than purchasing a standard blind flange.

Appreciate your help,
Robert P.

RE: API Tank Blind Flange burned from plate?

I'd use API 650's manway thickness in lieu of a blind flange.  And yes you can make it from plate.  Per API table 5-3b a thickness of 5/16 would be sufficient so our 3/4 should be fine.

RE: API Tank Blind Flange burned from plate?

Thank you so much!

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