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A risk-based approach to design warning system for processing facilities


Chang, Y and Khan, F and Ahmed, S, A risk-based approach to design warning system for processing facilities, Process Safety and Environmental Protection, 89, (5) pp. 310-316. ISSN 0957-5820 (2011) [Refereed Article]

DOI: doi:10.1016/j.psep.2011.06.003


Alarm flooding is a major safety issue in today's processing facilities. Important recommendations are available for alarm management; however, they are often violated in practice, especially in the alarm systems implemented through the distributed control system. An effective process alarm prioritization and management system is desired for a safe and effective operation of a process facility. In present work, authors address two main issues related to an alarm system - the reliability and the prioritization of the alarms. The main objective is to deal with the alarm-flooding problem in process facilities. A multi alert voting system based on sensor redundancy approach is proposed to improve the reliability. A quantitative risk-based alarm management approach is proposed to address the flooding issue. In the risk-based approach, an integrated model consisting of the probability (P), the impact (I) of the potential hazards, and the process safety time is proposed to prioritize these raised alarms. The proposed approach is further explained by a reactor system with pressure and temperature variable monitoring and controls, where the hazards associated with two alerts caused by over high pressure and over high temperature are analyzed and integrated with response time for alarms generation and prioritization. © 2011 The Institution of Chemical Engineers.

Item Details

Item Type:Refereed Article
Keywords:Alarm management; Alarm warning; Process safety; Risk assessment; Alarm management; Alarm warning; Distributed Control System; High pressure; High temperature; In-process; Integrated models; Management systems; Monitoring and control; Prioritization
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Ocean engineering
Objective Division:Mineral Resources (Excl. Energy Resources)
Objective Group:Environmentally sustainable mineral resource activities
Objective Field:Environmentally sustainable mineral resource activities not elsewhere classified
UTAS Author:Khan, F (Professor Faisal Khan)
ID Code:94550
Year Published:2011
Web of Science® Times Cited:29
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2014-09-11
Last Modified:2017-11-01

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