You could use one many inspection companies that are already in the biz. Like
Tuboscope etc.
There is nothing like the pigs they use to make a movie.
Yancey
Steve McKenzie <Mechproj@xtra.co.nz> wrote:Hi Darryl
The small dog idea sounds good, but the SPCA might think otherwise.
I will be using a purpose made (for pipes) unit that comes with an operator.
It would be interesting to build one but shaking it down could take some
time.
The purpose built unit has integral lighting, a guide system and a distance
meter.
Reminds me of an attempt made years ago to locate pressure restrictions in an approx 15km long tailrage at a hydro power station (Manapouri). One of the engineers coupled a small battery powered tape recorder to an audio oscillator and a pressure transmitter, so the sound pitch recorded on the tape was proportional to the pressure (like a vario in some gliders) The whole thing was encased in a slightly positive buoyancy float and painted brightly to aid location and retrieval. The trials were endless. Come test day the tape recorder had been misplaced, so the boss kindly lent his personal one. The whole thing was assembled, lowered into the draft tube and released. It was never seen again.
Cheers
Steve McKenzie
-----Original Message-----
From: Daryl Oster [mailto:daryl@et3.com]
Sent: Friday, November 01, 2002 4:13 AM
To: PipingDesign@yahoogroups.com
Subject: RE: [PipingDesign] The old TV camera up the pipe trick
Steve,
I have not done this before, but do you think the pipe is open enough to send in a small toy gasoline or battery powered vehicle (or a small dog - just kidding) like a powered skateboard with pontoon floats and a super wide angle lens video tape camera duct taped to the top ? This way you could film the whole thing at once. The "robot" cost should be less than $1000 if you have to buy new components, and the benefit of less down time, and not having to break the joints, but the risk is that the "robot" could get stuck in the line. Perhaps you could tie on a spool of 110lb test Kevlar fishing line to pull the thing back out if needed.
Best Regards,
Daryl Oster
et3@et3.com (352) 795-5415 *************************************************
> -----Original Message-----
> From: Steve McKenzie [mailto:Mechproj@xtra.co.nz]
> Sent: Thursday, October 31, 2002 6:16 AM
> To: PipingDesign@yahoogroups.com
> Subject: [PipingDesign] The old TV camera up the pipe trick
>
> Gents
>
> As happens from time to time, I have a pipeline (slurry), mainly
> steel encased PE, with a much higher friction loss that what I
> calculate (3X). It is about 420mm ID 1500m long and runs over rough
> country, but basically horizontal then inclined, say 1:5, then
> horizontal and out the end.
> Its time to drain the line,and look inside to see whats going on, so
> I am going to use one of those TV camera things on a motorised
> trolley to make a movie. The camera cable is 180m long, so I intend
> picking spots I think critical, breaking a flanged joint, and
> looking, say, 150m each way.
> The whole thing comes with operators, truck etc etc so theoretically
> all I should have to do is, crack a few joints, sit back and watch
> the show.
> Ha ha.
> If anyone has carried out an internal video inspection of a pipeline
> before, could they let me know any problems they experienced, and any
> materials/supplies I should keep close to hand (other than a crate of
> beer).
> I have never done a video pipeline inspection before, so technically
> speaking I suppose I am, ahem,a virgin. Your comments are invited
> with a view to ensuring that my experience is pleasurable and does
> not result in tears.
>
> Cheers
>
> Steve McKenzie
>
>
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877-610-8924.
www.texasflange.com
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[Non-text portions of this message have been removed] Received on Fri Nov 01 12:42:00 2002
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