Re: [PipingDesign] Sloped headers

From: <bruce.r.raymond@fluor.com>
Date: Tue Jan 15 2008 - 04:26:00 EST

Ravi - As Richard & Mandar have replied to this thread I just wanted to add a little extra - 1st - you refer to shoes / saddles - is this an alloy line? what size is the header & what are the materials / design temps? Normally - as stated in other replies - shoes are used in pipe racks for supporting piping, a vertical "trunion" does not lend itself easily to expansion, guides, & anchors (directional or fixed), Also in case of fabrication errors (it happens) a shoe is easily removed to shorten, or shimmed as required.vs. a trunion is a major headache to remove. 1 last comment - a trunion creates a natural internal corrosion point which requires a weep hole & covers a portion of the pipe which will in the future be subject to periodic wall thickness testing. I vote for shoes.

Bruce R. Raymond
Senior Design Supervisor
Fluor

ravi patel <ravi_9211@yahoo.com>
Sent by: PipingDesign@yahoogroups.com
01/14/2008 12:47 PM
Please respond to PipingDesign

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Subject
[PipingDesign] Sloped headers

In the current project of a petrochemical plant, one of the senior designers had run a sloped header 120 m long on trunions of varying height. he had issued the drawing 2 months ago.

Now we have a senior checker in company, who was going through the model review.
he wants it to revise the header and run it on shoes/saddle.

I just wanted to know whether anything was wrong with using trunions. Is it fundamentally wrong to run sloped headers on trunions??

Thanks
Ravi

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Received on Tue Jan 15 04:26:00 2008