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Leakage detection and location in a liquefied petroleum gas pipeline
conference contribution
posted on 2023-05-23, 09:48 authored by Adair, D, Emara-Shabaik, H, Jaeger, MA methodology for pipeline leakage detection, together with isolating the size of the leak and the leakage location, using an evidential reasoning based approach is presented. Leakage in pipes produces two major effects, a change in the difference between inlet flow and outlet flow, and, an average pressure change over time. Each of these changes, although in reality coupled, can be thought of as providing two independent bodies of evidence (typically incomplete and non-specific) which can give hints of the occurance of a leak. Inference using traditional Bayesian analysis involves assumptions in cases of incomplete information and partial ignorance. Evidential reasoning, also called the Dempster-Shafer (DS) theory, has proved very useful for such situations and has the ability to incorporate both aleatory and epistemic uncertainities in the inference mechanism. The bodies of evidence from the changes mentioned above are mapped over a ‘frame of discernment’ of risk of leakage and subsequently the DS rule of combination is applied to make an inference on the occurence, size and location of a leak. What is described below is a novel methodology as to how a system based on the evidential reasoning approach may be trained to detect and locate leaks in compressible flow in a pipeline. The evidential reasoning based approach is trained off-line with the results encouraging.
History
Publication title
Proceedings of the 2014 10th International Pipeline ConferencePagination
1-12ISBN
978-0-7918-4610-0Department/School
School of EngineeringPublisher
The American Society of Mechanical EngineersPlace of publication
New York, USAEvent title
2014 10th International Pipeline ConferenceEvent Venue
Calgary, CanadaDate of Event (Start Date)
2014-09-29Date of Event (End Date)
2014-10-03Rights statement
Copyright 2014 ASMERepository Status
- Restricted