Fwd: RE: High temperature Buried Pipeline

From: <Shannon>
Date: Thu May 04 2006 - 10:08:00 EDT

Sent to the wrong address

Please all, if you want to post to the GROUP then post to "pipingdesign@yahoogroups.com" NOT <a href="/group/PipingDesign/post?postID=73Tp2G7rSDLkY7-4J8mSkVg7GPxkcT8R3Cy8n8PFdhlrb3asHefZmOMH_6T4BiWyaBnAvbwhEYxgoMwa5M-ZS4b0E7Z8-9uwNWAd3A">pipingdesign-owner@yahoogroups.com</a>". We've had a rash of these lately, so I think it's a yahoo quirk as the group is set to reply to group, so before you hit send just check where it is being sent to.

Thanks all
Shannon

• Steve McKenzie <gyro-@hotmail.com> wrote:

> From: "Steve McKenzie" <gyro-@hotmail.com>
> To: <a href="/group/PipingDesign/post?postID=_5Hh3IF2Uzpbl42J48cW1loMfoTQENxOjLCd88iRTjelkTbc6jawi92UnxlBxHH1AhNUZgx33QHA_MC6SohNr-8xLy3hFqkLxnBtXA">PipingDesign-owner@yahoogroups.com</a>
> Subject: RE: [PipingDesign] High temperature Buried
> Pipeline
> Date: Fri, 05 May 2006 00:15:24 +1200
>
> Hi Md Danish
>
> a buried depth of 1000m is unusually high. It may
> work to your advantage by
> providing unusually high clamp force on the pipe
> external surface. But you
> probably mean 100m long and the buried depth will be
> around 1-3m, by my
> guess. There are three design approaches that I am
> aware of.
> 1) Earth reaction and friction resists expansion
> directly on pipe wall .
> Much careful design and controlled conditions
> essential.Energy waste can be
> an issue
> 2) Pre-insulated pipe sections used. Heaps of work
> done on this especially
> for district heating schemes in colder climes (eg
> Scandinavia). Lots of
> failures and expensive repairs.The solution will
> most likely reside with
> this option, but considerable effort and cost is
> required for a predictable
> outcome.
> 3) Pipe installed in concrete conduit. Always
> consider this option,
> especially if a number of pipes are required. Least
> risk, high first cost
> (but not always the highest).
>
> Have fun.
>
> Cheers
>
> Steve
>
>
>
>
> >From: "Mohammad Danish" <mdanish@tebodin.co.om>
> >Reply-To: <a href="/group/PipingDesign/post?postID=_5Hh3IF2Uzpbl42J48cW1loMfoTQENxOjLCd88iRTjelkTbc6jawi92UnxlBxHH1AhNUZgx33QHA_MC6SohNr-8xLy3hFqkLxnBtXA">PipingDesign-owner@yahoogroups.com</a>
> >To: <pipingdesign@yahoogroups.com>
> >Subject: [PipingDesign] High temperature Buried
> Pipeline
> >Date: Wed, 3 May 2006 12:01:59 +0400
> >
> >Friends,
> >
> >Please guide me for buried pipeline at 130 Deg
> Centigrade.
> >
> >
> >
> >Due to large temp diff of 90 degree huge expansion
> of pipe in buried
> >installation as expected.
> >
> >Pipe is Duplex Stainless Steel.
> >
> >Buried depth is 1000 meter.
> >
> >Temp is 130 C
> >
> >Installation temp is 30 C.
> >
> >
> >
> >Please guide how to control the movement.
> >
> >
> >
> >Regards,
> >
> >Tebodin & Partner LLC
> >
> >Md Danish
> >
> >Pipeline Engineer
> >
> >tel. +968-2449 6077
> >
> >fax +968 2449 7290
> >
> >gsm +968 95525965
> >
> >e-mail <a href="/group/PipingDesign/post?postID=-mfCE7YhpRU95MVLawCfPQ2Mn8H5wbEpZhSltpAR6zaaDQx8L4ibvYW2afcLNWMxRw0gLMia93QDHl8PKPlL">mdanish@tebodin.co.om</a>
> >
> >
> >
> >
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> >
> >
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