Once you choose an ANSI B16.9 branch connection to meet the piping spec requirements you should be alright, otherwise, for example if you choose to replace a 4X2 reducing Tee with a Stub in, then to be code compliant you need to do a calc to check if the branch connection requires a reinforcing pad or not to meet the design conditions.
-----Original Message-----
From: Geoff Stone DD&D Australia [mailto:blenrayaust@yahoo.co.uk]
Sent: Wednesday, 28 August 2002 13:57
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] FW: Branch connection
ASME B31.3 allows the use of weldolets and provides the dsign requirements. Standard can be downloaded on the Internet. --- Prakash.Eswarappa@kvaerner.com wrote:
<HR>
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<tt>
<BR>
<BR>
-----Original Message-----<BR>
From: Eswarappa, Prakash KRJS <BR>
Sent: Tuesday 27 August 2002 18:08<BR>
To: PipingDesign@yahoogroups.com
<mailto:PipingDesign@yahoogroups.com> <BR>
Subject: Branch connection<BR>
<BR>
Dear Pipers,<BR>
<BR>
As per piping material spec. for flowlines in a wellhead platform, we
use<BR>
branch fitting 4"X2" unequal tee.<BR>
Our contractor like to change to 4"X2" weldolet instead of unequal
tee which<BR>
is out of spec.<BR>
Can anybody tell me how we can accept weldolet instead of unequal tee?<BR>
What is the calculation to justify weldolet is acceptable?<BR>
What's the references to calculations? Like code? Std? Books?....<BR>
<BR>
Cheers<BR>
Prakash<BR>
<BR>
</tt>
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Texas Flange - a good source for information on industrial flanges, all they
ask is for referrals for designs they help with.
877-610-8924.
www.texasflange.com
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