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dabhadepd
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Join Date: May 2012
Posts: 1

Opening In Flat Head As Per ASME Section VIII Division 2

05/30/2012 1:23 AM

I have to make calculations of a flat head (O.D. 89 mm) with a central circular opening of size 3/4" BSP for a pressure vessel as per ASME VIII div 2.

Is there any limit of size for opening upto which opening is exempted from reinforcement ?

Which are available ways to design a flat head with central threaded opening (with size criterions) as per ASME VIII div 2 ?
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brkmech
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Join Date: May 2009
Location: UAE
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#1

Re: Opening In Flat Head As Per ASME Section VIII Division 2

05/30/2012 8:57 AM

I checked in Pv-Elite. Exemption of reinforcement calculations is not allowed

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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Ketchikan, AK, USA
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#2
In reply to #1

Re: Opening In Flat Head As Per ASME Section VIII Division 2

05/30/2012 10:33 AM

There is, or at least used to be, a provision exempting nozzles of 3 inches or less from reinforcment; I don;t remember if it applies to flat heads versus shells only.

There also is, or was, a provision exempting "vessels" of 6 inches I.D. or less from the Code. These small vessels might then fall under a Code for piping components, or under UL or similar rules.

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brkmech
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#3
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Re: Opening In Flat Head As Per ASME Section VIII Division 2

05/31/2012 12:32 AM

Probably you are talking about division 1 where up to 89 mm opening allowed for shells whose required thickness is 10 mm or below

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