Re: The old TV camera up the pipe trick

i agree. we've hired people from the likes of SGS - the resolution form CCD is great and you also get input/report from the guys who does this kind of thing routinely. cost is normally not an issue.

• In PipingDesign@y..., Yancey molner <ymolner@y...> wrote:
  >
  > 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@x...> 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@e...]
  > Sent: Friday, November 01, 2002 4:13 AM
  > To: PipingDesign@y...
  > 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
  > *************************************************
  > (c) '02, et3.com Inc. http://www.et3.com
  > POB 1423 Crystal River FL 34423-1423
  > et3@e... (352) 795-5415
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  >
  >
  > > -----Original Message-----
  > > From: Steve McKenzie [mailto:Mechproj@x...]
  > > Sent: Thursday, October 31, 2002 6:16 AM
  > > To: PipingDesign@y...
  > > 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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  >
  >
  >
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  > ask is for referrals for designs they help with.
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