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Title: The Development Of A Probe For Detection Of Pcbs And Other Liquids In Live Gas Mains.
Author: Yannis Savidis, Dr. Jane Hodgkinson
Source: American Gas Association 2000
Year Published: 2000
Abstract: Water ingress into distribution mains can be a common problem that can lead to loss of gas supply to customers and gas quality issues. The standard solution to this problem is to excavate and find where the water is entering the main, usually by camera inspection, and then carry out a repair. Camera inspection often proves unreliable in finding the source of the leak, so BG Technology in conjunction with Advanced Optical Solutions (AOS) have developed a device for locating the water ingress point, whilst the main is still live. The water ingress probe can successfully locate the source of the water ingress without the need for extensive excavation. It is inserted through a small diameter hole made in the main, under live gas conditions, and rodded along the main. On encountering the presence of water, the probe generates a signal, which alerts the operator. The operator can then ascertain the location of the water ingress.




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