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 O.1 gallons/hour or O.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.
Development of Acoustic Emission for leak detection and location in liquid-filled, buried pipelines
1999
12 Seiten, 4 Quellen
Conference paper
English
Acoustic emission leak detection of buried oil pipelines, river and road crossings
Tema Archive | 2010
|Leak detection and location in gas pipelines
Tema Archive | 1988
|Acoustic leak detection for underwater oil and gas pipelines
Tema Archive | 2002
|Dispersion compensation in acoustic emission pipeline leak location
Tema Archive | 1997
|Leak location of pipelines based on characteristic entropy
Tema Archive | 2014
|