Alarm flooding is a significant problem in the process industries. To solve this problem, a scenario-based early warning system design methodology is proposed. It comprises three steps: (i) scenario identification: events are identified by HAZOP analysis, variables are allocated to the scenario-based group, and the variables states correlated to the scenarios are identified; (ii) model development: Bayesian network of all variables is learned from the process data, and the events nodes are appended according to expert knowledge to construct the Bayesian network model of a scenario-based early warning system; (iii) model implementation: the model is applied online to monitor process, the monitored variables continuously produce evidence, update the events probabilities, find the root causes, and give an events warning message together with the root cause to operators. The methodology implementation and salient points are explained with the help of an easy to follow simple case study.

Item Type:	Refereed Article
Keywords:	Bayesian networks, Bayesian network models, early Warning System, model development, model implementation, process industries, process operation, scenario identifications, warning messages, computer aided network analysis
Research Division:	Engineering
Research Group:	Interdisciplinary Engineering
Research Field:	Risk Engineering (excl. Earthquake Engineering)
Objective Division:	Expanding Knowledge
Objective Group:	Expanding Knowledge
Objective Field:	Expanding Knowledge in Engineering
Author:	Khan, FI (Professor Faisal Khan)
ID Code:	120539
Year Published:	2015
Web of Science® Times Cited:	4
Deposited By:	NC Maritime Engineering and Hydrodynamics
Deposited On:	2017-08-28
Last Modified:	2017-11-06
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