<?xml version="1.0" encoding="UTF-8"?> <article key="pdf/10630" mdate="2012-11-24 00:00:00"> <author>Amer A. Dheedan</author> <title>Multiagent Online Monitor for the Safety of Critical Systems</title> <pages>1501 - 1511</pages> <year>2012</year> <volume>6</volume> <number>11</number> <journal>International Journal of Computer and Information Engineering</journal> <ee>https://publications.waset.org/pdf/10630</ee> <url>https://publications.waset.org/vol/71</url> <publisher>World Academy of Science, Engineering and Technology</publisher> <abstract>Operational safety of critical systems, such as nuclear power plants, industrial chemical processes and means of transportation, is a major concern for system engineers and operators. A means to assure that is online safety monitors that deliver three safety tasks; fault detection and diagnosis, alarm annunciation and fault controlling. While current monitors deliver these tasks, benefits and limitations in their approaches have at the same time been highlighted. Drawing from those benefits, this paper develops a distributed monitor based on semiindependent agents, i.e. a multiagent system, and monitoring knowledge derived from a safety assessment model of the monitored system. Agents are deployed hierarchically and provided with knowledge portions and collaboration protocols to reason and integrate over the operational conditions of the components of the monitored system. The monitor aims to address limitations arising from the largescale, complicated behaviour and distributed nature of monitored systems and deliver the aforementioned three monitoring tasks effectively. </abstract> <index>Open Science Index 71, 2012</index> </article>