"Optimisation de plusieurs aspects de la chaîne logistique du transport pétrolier"

Nous avons le plaisir de vous convier à la défense de thèse de Madame Emna Belaid. Celle-ci se déroulera le mercredi 28 aout, à 14h, dans la salle MIPS de l'Institut Montefiore, bâtiment B28.

Cette recherche doctorale a été menée sous la direction de Mario Cools.

Résumé

The transport logistics chain is a branched chain, which includes various nodes guided by decision and information systems. It includes actors whose objectives might be conflicting and that are continuously evolving. The challenge of a supply chain is to manage all the individual links in order to make operations smoother, faster, cheaper and safer. Of particular interest is the transport of hazardous materials (e.g. oil), given the more complex chains due to the risk related to an accident. The dissertation is oriented to the optimisation of the logistic chain of crude oil. In order to understand the complexity of this logistic chain, a conceptual framework has been established to understand its inner functioning. This conceptual framework is based on a global vision and follows an aggregate-disaggregated approach. Systemic analysis allows breaking down its structure by emphasizing the principles of stakeholder theory. The dynamic interactions between the found subsystems are therefore detected. Among several interactions, two of them have been retained which are namely the transport department and port authority relationship, and the port authority and ship-owner relationship, on the other hand. The former relationship concerns the land pre-carriage from the hinterland side, and the second concerns the productivity of a petroleum port. The thesis contributes by presenting a new land network system to transport the oil from the different fields to the seaport. It considers two criteria, which are the construction cost of the infrastructure and the risks. It examines the government perspective, which must make a choice between the road and the pipeline. This analysis provides a pipeline alternative solution that connects exclusively, according to a spanning tree configuration, all nodes in a loop-free network. The bi-objective problem is solved using the Ɛ-constraints method. Besides, the port productivity from the port authority point of view is studied by considering an operational performance criterion to optimize the ships services. This performance criterion is the time a ship spends in port. This time is analysed into three phases, namely the loading time and the waiting time before and after loading. The analysis considers linear and stochastic parameters.