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Title: Field-Testing Results On The Sonic Leak Pinpointer
Author: James E. HUEBLER,JAMES E. HUEBLER,L L. Altpeter
Source: American Gas Association 1985
Year Published: 1985
Abstract: This paper discusses the results of field-testing performed on the sonic leak pinpointer for medium- and high-pressure gas distribution systems. The sonic leak pinpointer is a supplement to conventional leak pinpointers by means of which false excavations can be eliminated. During the field testing, currently available pinpointing techniques (including the combustible gas indicator) accurately pinpointed leaks al 74 percent of the sites. The addition of the sonic leak pinpointer to these techniques increased the accurate pinpointing to 97 percent of the sites, an improvement of 23 percent. Accurate pinpointing is defined as 2 feci, ensuring that the leak is in the first bell hole excavated. Uses for the pinpointer and the general procedure for using the instrument are also discussed. The current results demonstrate that the sonic leak pinpointer has a payback period of less than two months.

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