Thanks Al
I will out it on my CV immediately.
Todays exercise was how long a piece of 315 OD poly pipe can you pull with
a digger? We moved 300m of pipe in a single piece about 2km. Took about 3
hours + 4 guys, mostly watching.
Tomorrows exercise is how long does it take to relocate 450m of 450NB
flanged steel pipe about 2km? My guess is 18 hours using 2 crews of 5. I
will know the answer about 2am Wednesday morning.
Cheers
Steve
-----Original Message-----
From: Al [mailto:alwynk@shaw.ca]
Sent: Sunday, May 16, 2004 5:16 AM
To: PipingDesign@yahoogroups.com
Subject: RE: [PipingDesign] Butt Welded HDPE Pipe - Friction Loss Due To
Weld Beads
you got it steve, youre now the authoritative source. I agree youre right on the money. I dont think you'll find anything.
-----Original Message-----
From: Steve McKenzie [mailto:mechproj@xtra.co.nz]
Sent: Friday, May 14, 2004 4:35 PM
To: PipingDesign@yahoogroups.com
Subject: [PipingDesign] Butt Welded HDPE Pipe - Friction Loss Due To
Weld Beads
Gents
an HDPE supplier/installer has been asked by his client to debead the
weld inside an HDPE pipeline. The reason given is thought to be
increased pipeline friction due to the weld beads.
The line is 1400mm OD (18m lengths), 56mm wall and the beads are said
to be 10mm high (which seems a little low to me). I did a few rough
sums treating the weld as an orifice plate. The outcome was that the
weld friction loss is less than 3% of the pipe friction loss, which
didnt surprise me.
I am looking for an authoritative (quotable) study/reference on this
subject.
Any leads?
Thanks
Steve
Yahoo! Groups Links
Yahoo! Groups Links Received on Mon May 17 02:45:00 2004
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