Browsing by Author "Benikhlef, Taha"

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    Dynamic risk assessment for atex zone installations
    (2012) Benikhlef, Taha
    Risk assessment in the nuclear and chemical/petrochemical facilities is becoming a key to the engineering activity, which is necessary to optimize protective layers to limit societal and individual risks. Risk assessment related to the protection engineering discipline usually involves two parts: (1) deterministic analysis based on dynamic process modeling with the goal of verifying the protection design and (2) Probabilistic analysis, aiming to assess the frequency of consequences of accidents outside the design basis. This work deals with the two parts mentioned above in order to extend the experience of nuclear and chemical/petrochemical industries into a common risk analysis aiming in the _rst part at modeling the chemically reacting processes within explosive atmospheres installations using deterministic tool analysis based on thermodynamic and chemical reactions modeling. There are some similarities between Bhopal disaster, the Chernobyl accident and TMI, the phenomenology is similar in that the temperature and the pressure caused by exothermic reactions had increased dramatically leading to a loss of containment. The second part aims to develop an adequate computing tool for the transient simulations to _nd damage domains and calculate their exceedance frequencies, i.e. identify those transients within a sequence that lead to damage and calculate the exceeding frequency of the contribution of all paths within the sequence. More speci_cally, this work aims to develop an adequate Dynamic Risk Assessment (DRA) model through a simpli_ed case of Methyl-Isocyanate explosion scenario inside the storage tank 610 of the Bhopal plant. A comparison with a similar scenario (i.e. compartment containment analysis of H2 deagrations) in the nuclear industry is also made to show the feasibility of a common DRA
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    Major industrial risks assessment in chemical/petrochemical facilities
    (2014) Benmessaoud, Tahar; Benazzouz, Djamel; Benikhlef, Taha; Mazouz, Lakhdar; Saadi, Slami
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    Optimisation des problèmes d'ordonnancement multi-objectifs dans les systèmes de production
    (2005) Benikhlef, Taha
    Le travail de recherche présenté dans ce mémoire consiste à l'étude d'une problématique industrielle concernant l’optimisation par Algorithmes Génétiques (AG) de l'ordonnancement dans un Atelier d’Extrusion Plastique. Cet atelier se trouve actuellement face aux grands problèmes liés à la matière première de polyéthylène, matière très chère suite aux chocs pétroliers. L’objectif principal est de trouver le meilleur ordonnancement qui propose au responsable de la production un ensemble d’ordres de passage entre les commandes des clients sur les différentes machines, de telle façon à baisser le coût lié aux déchets de transition, minimiser en revanche le temps nécessaire pour finir les tâches des différentes commandes. Les AG appartiennent aux approches d’optimisation les plus performant, cela nous a amené à exploiter leur robustesse et leur puissance pour notre étude en fixant comme critère à optimiser le temps et le coût. Ces deux critères ont été réduits considérablement lors de la phase de simulation
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    Safety analysis approach based on thermodynamic and chemical reactions modelling
    (Elsevier, 2012) Benikhlef, Taha; Benazzouz, Djamel; Adjerid, Smail; Lebecki, Kazimierz