eCite Digital Repository

Loss functions and their applications in process safety assessment


Hashemi, SJ and Ahmed, S and Khan, F, Loss functions and their applications in process safety assessment, Process Safety Progress, 33, (3) pp. 285-291. ISSN 1066-8527 (2014) [Refereed Article]

Copyright Statement

Copyright 2014 American Institute of Chemical Engineers

DOI: doi:10.1002/prs.11659


Process deviations, along with failure of control systems and protection layers, result in safety and quality loss in plant operations. This article proposes an operational risk-based warning system design methodology based on overall system loss. Loss functions (LFs) are used to define the relationship between process deviations and system loss. For this purpose, properties associated with quadratic LF and a set of inverted probability LFs are investigated and compared. The results suggest that LFs can be used in a novel way to assess operational stability and system safety. The proposed consequence assessment methodology using LFs is then incorporated into a risk-based warning system design model to analyze warnings associated with process deviations. A simulated case study is presented to demonstrate potential application of the proposed methodology; the study examines the response to a temperature surge for a reactor system.

Item Details

Item Type:Refereed Article
Keywords:process safety management; alarm warning; alarm management; risk assessment
Research Division:Engineering
Research Group:Chemical engineering
Research Field:Process control and simulation
Objective Division:Manufacturing
Objective Group:Other manufacturing
Objective Field:Other manufacturing not elsewhere classified
UTAS Author:Khan, F (Professor Faisal Khan)
ID Code:100303
Year Published:2014
Web of Science® Times Cited:22
Deposited By:Research Division
Deposited On:2015-05-11
Last Modified:2017-11-03

Repository Staff Only: item control page