Re: Digest Number 913

From: <Narendra>
Date: Wed Jul 30 2003 - 14:18:00 EDT

I am really puzzles as to what you mean by a bomb. If it is something cylindrical or spherical, the thickness calc formula is same as even in ASME Sec VIII Div 1 only allowable stresses will change and you get this value from ASME Sec II.
What is this stress intensification factor: Are you meaning it the allowable stress? UTS/ 3 and YS/1.5 will give you the value for Div 2 requirements , again refer Sec II if the material is listed.
Refer any Piping design handbook for layout knowledge or attend any course on Piping tech.
NK Roy

• Vinay Shankar <vinaysr79@vsnl.net> wrote:
  > hi,
  > i am vinay again , working in John Brown
  > Technologies. I am desperate for a
  > response for my doubt
  >
  > 1. What is the correct formula to calculate the
  > thickness of a sample
  > bomb according to ASME Sec VIII Div. II.
  >
  > Can anyone tell me where i can find the stress
  > intensification factor
  > for DSS material ASTM A 790 UNS31800.??
  >
  >
  > 2. Can anybody tell me where i can find material to
  > get a better
  > understanding of piping layouts, pipe routings etc.
  >
  >
  

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