Steve,
Your best bet is to run an intelligent pig through the line and all info. you need will be provided from the results
Cheers and regards
Adolphus O Omodu
Projects Department/Design Engg.
Exxonmobil
E-mail: adolphus.o.omodu@exxonmobil.com
Telephone: 234(01)-2621640 Ext. 2524
Telelphone: 1-713-431-8500 Ext. 2524
"This message and any attachments may contain proprietary or confidential information. If you are not the intended recipient or you received the message in error, you must not use or distribute the message. Please notify the sender immediately and destroy the original message. Thank you"
"Steve McKenzie"
<mechproj@xtra.co.nz> To:
PipingDesign@yahoogroups.com
cc:
Subject: [PipingDesign]
Pipeline Pressure Survey
02/26/04 11:52 AM
Please respond to
PipingDesign
Gents
I have a 250/300NB gravity driven water pipeline about 9km long which
does not flow as much as expected. Some of the line is steel, for
pressure reasons, and the rest is PVC. The total friction head loss
is around 100m at around 75 l/s. A pressure/ R.L./line length survey
tells me that excessive scaling of the steel portions of the pipeline
are probably to blame. However I cannot rule out the possibility of a
few localised blockages in the line instead of relatively even
scaling.
To discount the localised blockage, I thought about sending a
pressure transmitter,timeclock and datalogger assembly down the line.
It would give me a pressure vs time profile for the line. Because I
know the flowrate, line profile and approximate velocity, an analysis
of the logged data should enable me to know if and where any
blockages are likely to be.
I know some pigs have this capability, but I am thinking more of
something about the size of a tennis ball, neutral buoyancy, and
hopefully with a screamer alarm so we can find it if it gets stuck.
Anyone know of anything suitable, or another way?
Cheers
Steve
Yahoo! Groups Links Received on Thu Feb 26 09:52:00 2004
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