Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 186, Issue 1, Pages 35-58Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2010.09.115
Keywords
Leak detection system; Natural gas; Pipeline network; Biosensor; Methane; Hydrogen sulfide; Mercaptans
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Monitoring of natural gas (NG) pipelines is an important task for economical/safety operation, loss prevention and environmental protection. Timely and reliable leak detection of gas pipeline, therefore, plays a key role in the overall integrity management for the pipeline system. Owing to the various limitations of the currently available techniques and the surveillance area that needs to be covered, the research on new detector systems is still thriving. Biosensors are worldwide considered as a niche technology in the environmental market, since they afford the desired detector capabilities at low cost, provided they have been properly designed/developed and rationally placed/networked/maintained by the aid of operational research techniques. This paper addresses NG leakage surveillance through a robust cooperative/synergistic scheme between biosensors and conventional detector systems; the network is validated in situ and optimized in order to provide reliable information at the required granularity level. The proposed scheme is substantiated through a knowledge based approach and relies on Fuzzy Multicriteria Analysis (FMCA), for selecting the best biosensor design that suits both, the target analyte and the operational micro-environment. This approach is illustrated in the design of leak surveying over a pipeline network in Greece. (C) 2010 Elsevier B.V. All rights reserved.
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