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sachin_rastogi_in
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Join Date: Jul 2008
Location: India
Posts: 111

Wall thickness

11/17/2008 4:37 AM

We take size of branch upto first block valve higher than the calculated minimum required thickness. Is it mandatory ? As per my understanding this is so because Pressure increases & so vibration when we go from header to branch. Pl. give more info regarding this.

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Sachin

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PennPiper
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Engineering Fields - Piping Design Engineering - Retired Piper

Join Date: Feb 2007
Location: Bayonet Point, Florida
Posts: 635
Good Answers: 61
#1

Re: Wall thickness

11/17/2008 7:38 AM

Who told you to do this and why?

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pipewelder
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Hobbies - DIY Welding - pipewelder

Join Date: Apr 2007
Location: North Georgia, USA
Posts: 671
Good Answers: 33
#2

Re: Wall thickness

11/18/2008 9:08 AM

I do not think this is mandatory by any codes. I normally do this on pipelines that have allot of wear to give more corrosion/erosion allowance to what I consider to be a higher wear point at the intersection of the 2 pipes. I do this simply because it has been my experience that certain high solid services have proven to wear the intersection down more. On normal services such as water, steam, gas,air it is not helpful and a waste of money and time IMO

pipewelder

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