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The Development of Acoustic Emission for Leak Detection and Location in Liquid-Filled, Buried Pipelines Pages: 12 Published: Jan 1999
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View License Agreement Source: STP1353-EB Abstract Acoustic Emission leak detection and location for liquid-filled, buried pipelines was studied using various leak sources and laboratory reference standards.These standards provided significant data that have contributed to the development of test procedures for generating two-phase flow and a better understanding of the leak mechanism. Results are discussed for leak signal enhancement due to two-phase flow, leak orientation and the presence of backfill surrounding the pipe. Field studies were performed on buried pipes to demonstrate that small leaks (less than 0.1 gallons/hour or 0.1 mL/second) can be detected under the right test conditions and that the location of these small leaks can be determined using a variety of location methods. Among the different location methods examined was a location technique referred to as “tuned” linear location. In addition, a modification to the conventional Signal Difference location technique is discussed. Keywords: acoustic emission, leak detection, source location, buried pipelines, liquid-filled pipelines, laboratory reference standards Paper ID: STP15781S Committee/Subcommittee: E07.04 DOI: 10.1520/STP15781S  ASTM International is a member of CrossRef. | ||