University of Tasmania

File(s) not publicly available

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

journal contribution
posted on 2023-05-18, 03:14 authored by Chang, Y, Faisal KhanFaisal Khan, Ahmed, S
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.


Publication title

Process Safety and Environmental Protection










Australian Maritime College


Inst Chemical Engineers

Place of publication

165-189 Railway Terrace, Davis Bldg, Rugby, England, Cv21 3Br

Repository Status

  • Restricted

Socio-economic Objectives

Environmentally sustainable mineral resource activities not elsewhere classified