Journal
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
Volume 98, Issue 11, Pages 2397-2416Publisher
WILEY
DOI: 10.1002/cjce.23760
Keywords
Bayesian network; failure prognosis; fault assessment; predictive safety; risk analysis
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Funding
- Canada Research Chairs
- Natural Sciences and Engineering Research Council of Canada
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This paper presents a novel methodology for dynamic risk analysis, integrating the multivariate data-based process monitoring and logical dynamic failure prediction model. This concept for dynamic risk analysis is comprised of the fault assessment and dynamic failure prognosis modules. A combination of the naive Bayes classifier, Bayesian network, and event tree analysis is utilized to manifest the concept. The naive Bayes classifier is used for fault detection and diagnosis; it also generates a multivariate probability for a fault class in each time-step, which is used for dynamic failure prognosis by different paths a fault can lead a process to failure. The proposed framework has been applied to two process systems: a binary distillation column and the RT 580 experimental setup in four fault scenarios, and it is found the developed technique can effectively monitor the process and predict the failure.
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