pguthrie
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![[*]](./images/corporate/default_icon.gif) posted on 26-12-11 at 08:31 PM |
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Pressure Testing
Hey everybody! I just started leak detection myself, and I'm having a slight issue. My company wants me to have somebody else with me while I
pressure test to sonar, but rarely do I have an extra body available. I've tried to set the pressure tank regulator to about 10psi and sonar it
myself, but have not been able to find a leak.
This is a commercial property in Sw Florida. I know it's someplace in the vacuum lines, but also know it's a large leak someplace due to the fact
that the line will hold no pressure at all.
Other then having a second body to regulate the pressure higher while I listen, are there any other tips I could try?
Secondly, what about finding pipes under concrete? Is there a quick way or do you need to listen to the whole deck?
Thank you.
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trackerm
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| posted on 27-12-11 at 10:24 AM |
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as lance will tell you sonic detection is only successfull if the leak under pressure will generate noise. good pipe locating is essential in finding
the leak you may be in the wrong area. it would be beneficial, however, some leaks do not hold pressure at all or lose pressure so insignificantly
that you wont be able to locate them easily.
so, pipe locating is essential and the basic. pressure test and follow the pipe. i work alone so i understand sometimes locating the leak is a little
more challenging, especially in pipes that have a big leak that holds no pressure or those leaks that lose small amounts a pound a minute that are
hard to find. good luck
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brrscuba
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Mood: Underwater!
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| posted on 27-12-11 at 12:26 PM |
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Pressure testing
In cases where you are unable to buildup pressure you may need to introduce both water and air simultaneously. Add water from the lowest point and
air from the highest, this should allow you to buildup pressure and create a more identifiable sound. Lance sells a garden hose adaptor that attaches
to an open stem plug for the water induction or a second PT unit could be use.
Other equipment intensive methods could also be used;
Helium induction and detection.
A pipe inspection camera should be able to see a leak this large.
Sonde pipe location can be used to id the location the camera is viewing and if the camera cannot see the leak at least you can map the pipe route
with the sonde and know exactly where to listen.
Good leak detectors are always learning. Hope these ideas help. Please report back on how you made out.
Bruce
poolrepairdiver.com
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pguthrie
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| posted on 27-12-11 at 01:23 PM |
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Thank you for the info. As of now, the property just wants to plug off the vac lines, but i do have my company looking into getting a plumbing
camera. When i go back to fix it i'll let you know how it turned out.
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Poolman
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| posted on 27-12-11 at 02:51 PM |
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Pipe inspection camera or fix at the house, umm......
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