Leaking pipe on elevated trestle

[oldnumber11]

I work at an industrial wastewater treatment plant. One of our streams is pumped from a lift station about 500 meters away along a trestle (elevated about 15’ above grade). The pipe is fiberglass and it has double containment. The inner pipe is 10” diameter and the outer pipe is 14”. Along the way we have drip legs connected to the outer pipe for leak check purposes, i.e., sight glass with valves. We have an intermittent leak, and we have identified a 100 foot section where it might be, but in order to remove insulation, get a lift organized, etc., we would like to find a way to locate the potential leak(s). Any ideas on third party leak detection companies which could find a leak in fiberglass pipe? Or any other ideas?

 

[cvg]

there are numerous contractors with leak detection equipment that you could call. I believe it is primarily a device which amplifies and detects the sound made by the leak. you can google leak detection and find numerous contractors which will do it

http://www.smartleakdetection.co.za/

http://www.sleuthleakdetection.com/pipeline-leaks

http://www.polygongroup.com/leakdetection/