Long gauge-length FOS (fiber-optic sensors), effectively used in detecting pipe movement by monitoring any change in the neutral plane of the pipe from its initial reference state, can also measure any bending strains that occur due to pipe movement. Monitoring these strains and associated stresses can provide warnings of potential pipe failures. Detecting the presence of wall thinning due to general corrosion or erosion allows the operator to monitor a pipe section to ensure fitness for service. If a pipe section is known to be subject to local pitting and pinhole defects, FOS monitoring can predict, within some probability range, the presence of such defects. This articel describes the FOX-TEK FT long gauge-length fiber-optic sensors. Some of its uses include monitoring wall thinning due to corrosion and erosion, pipeline movement, bending strains, and buckling. The focus of this article is the use of FOS to monitor pipelines, but the same principles apply in any industry and FOS sensors are in use monitoring the same parameters in refineries and civil structures. Enbridge Pipelines Inc. has made a commercial order to have FOX-TEK's FT system installed on its largest pipeline in Canada. Enbridge was one of the first customer to participate in a pilot project with the technology.
Fiber-optic monitoring focuses on bending, corrosion
Die Überwachung von Pipelines auf Verformung und Korrosion mit faseroptischen Sensoren
Oil and Gas Journal ; 104 , 7 ; 55-60
2006
6 Seiten, 8 Bilder, 1 Tabelle, 6 Quellen
Article (Journal)
English
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