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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
environmental science
Layers of protection analysis in the framework of possibility theory
Journal of Hazardous Materials, Volume 262, Year 2013
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Description
An important issue faced by risk analysts is how to deal with uncertainties associated with accident scenarios. In industry, one often uses single values derived from historical data or literature to estimate events probability or their frequency. However, both dynamic environments of systems and the need to consider rare component failures may make unrealistic this kind of data. In this paper, uncertainty encountered in Layers Of Protection Analysis (LOPA) is considered in the framework of possibility theory. Data provided by reliability databases and/or experts judgments are represented by fuzzy quantities (possibilities). The fuzzy outcome frequency is calculated by extended multiplication using α-cuts method. The fuzzy outcome is compared to a scenario risk tolerance criteria and the required reduction is obtained by resolving a possibilistic decision-making problem under necessity constraint. In order to validate the proposed model, a case study concerning the protection layers of an operational heater is carried out. © 2013 Elsevier B.V.
Authors & Co-Authors
Ouazraoui, Nouara
Algeria, Batna
Université de Batna 1
Naït-Saïd, Rachid
Algeria, Batna
Université de Batna 1
Bourareche, M.
Algeria, Batna
Université de Batna 1
Sellami, I.
Algeria
Entreprise Nationale Des Travaux Aux Puits (entp Company)
Statistics
Citations: 25
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1016/j.jhazmat.2013.08.042
ISSN:
03043894
e-ISSN:
18733336
Study Design
Case Study
Study Approach
Qualitative