Title
An integration of human factors into quantitative risk analysis using Bayesian Belief Networks towards developing a ‘QRA+’
Author
Steijn, W.M.P.
van Kampen, J.N.
van der Beek, D.
Groeneweg, J.
van Gelder, P.H.A.J.M.
Publication year
2020
Abstract
Quantitative Risk Analysis (QRA) is a standard tool in some high-risk industries (such as the on- and offshore exploration and production and chemical industry). Presently, existing knowledge concerning human error likelihood and human reliability assessment is insufficiently represented in QRAs. In this paper we attempt to implement the quantification of the human factors in a QRA, which we call QRA+. We analysed a specific incident scenario: the risk of overfilling chemical storage tanks that operate at atmospheric pressure. This scenario was chosen because it is a relevant example of a high-risk scenario in the chemical industry. We identified relevant technological and human parameters within this scenario through on-site visits and interviews with site-experts. The quantitative knowledge concerning the technological parameters was obtained from officially documented SIL statistics, whereas the Standardized Plant Analysis Risk-Human Reliability analysis (SPAR-H) was used to quantify the human factors. Beta distributions were used to model failure probability distributions to account for the uncertainty inherent in dealing with human reliability. For seamless integration of existing qualitative and quantitative knowledge, we made use of a Bayesian Belief Network. The resulting model provides an integrated and more accurate estimation of the failure probabilities for both technological and human factors and the uncertainty surrounding such probability estimates. Furthermore, it gives insight in where these failure probabilities originate and how they interact. This will allow companies to identify those parameters they need to influence to get optimal results concerning their management of risk. © 2019 Elsevier Ltd
Subject
Atmospheric pressure
Bayesian networks
Chemical analysis
Chemical industry
Decision theory
Factor analysis
Human engineering
Offshore oil well production
Probability distributions
Reliability analysis
Risk assessment
Risk perception
Uncertainty analysis
Chemical storage tanks
Human reliability analysis
Human reliability assessments
Offshore exploration
Quantitative knowledge
Quantitative risk analysis
Seamless integration
Technological parameters
Risk analysis
Human
Interview
Probability
Quantitative analysis
Reliability
Uncertainty
To reference this document use:
http://resolver.tudelft.nl/uuid:65b8cb0c-0507-4435-a0ea-0721800b3559
DOI
https://doi.org/10.1016/j.ssci.2019.104514
TNO identifier
869710
ISSN
0925-7535
Source
Safety Science, 122
Article number
104514
Document type
article