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ASME VIII Div 1, No Nozzle, Reinforcement calcs?!

ASME VIII Div 1, No Nozzle, Reinforcement calcs?!

ASME VIII Div 1, No Nozzle, Reinforcement calcs?!

(OP)
Hi All

I'm designing a pressure vessel to ASME VIII Div 1 and
basically the shell has not got a nozzle. Its Ellipsoidal
dished ends with an 89mm hole machined out of one end and
50mm out of the other end. Does it need reinforcement and if so:

How would I calculate this?
Would I set tn as zero in the equation in UG-37?
The vessel isn't subject to Rapid Pressure Fluctuations!
 

RE: ASME VIII Div 1, No Nozzle, Reinforcement calcs?!

is there something welding or boltin in those holes??

the code says ""openining""  must be checked for adequate reinforcement.

how do you hydrotest this vessel with open holes

RE: ASME VIII Div 1, No Nozzle, Reinforcement calcs?!

(OP)
No welding, a flanged connection with a retaining ring
fits into the larger end and a flanged connection slots into
the smaller end from inside (before the larger end is sealed), both are bolted from the outside with large
nuts. As a bladder accumulator.
Hydrotesting is done with this arrangement in place.

RE: ASME VIII Div 1, No Nozzle, Reinforcement calcs?!

T1mmy, depending on dimensions, you may be able to exempt both openings per UG-36(c)(3).

Otherwise, perform calculations per UG-37, with all quantities related to a connection set to zero. Your only available reinforcement will be the excess thickness in the heads.

Regards,

Mike

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