Towards Accurate Root-Alarm Identification: The Causal Bayesian Network Approach *

Abnormalities in modern process industries are reported by alarms. Strong inter-connectivities within different units of a plant lead to annunciations of multiple alarms in a short period of time, which hinders a prompt operator response. A fundamental problem in such alarm floods is to identify the original source of abnormality by finding the directly affected alarm, known as the root cause. Thi...