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    Optimised scheduling for weather sensitive offshore construction projects

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    Publication type
    Vlerick strategic journal article
    Author
    Kerkhove, Louis-Philippe
    Vanhoucke, Mario
    Publication Year
    2017
    Journal
    Omega - International Journal of Management Science
    Publication Volume
    66
    Publication Issue
    Part A
    Publication Begin page
    58
    Publication End page
    78
    
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    Abstract
    The significant lead times and costs associated with materials and equipment in combination with intrinsic and weather related variability render the planning of offshore construction projects highly complex. Moreover, the way in which scarce resources are managed has a profound impact on both the cost and the completion date of a project. Hence, schedule quality is of paramount importance to the profitability of the project. A prerequisite to the creation of good schedules is the accuracy of the procedure used to estimate the project outcome when a given schedule is used. Because of the systematic influence of weather conditions, traditional Monte Carlo simulations fail to produce a reliable estimate of the project outcomes. Hence, the first objective of this research is to improve the accuracy of the project simulation by creating a procedure which includes both uncertainty related to the activities and an integrated model of the weather conditions. The weather component has been designed to create realistically correlated wind- and weather conditions for operationally relevant time intervals. The second objective of this research is to optimise the project planning itself by using both general meta-heuristic optimisation approaches and dedicated heuristics which have been specifically designed for the problem at hand. The performance of these heuristics is judged by the expected net present value of the project. The approach presented in this paper is tested on real data from the construction of an offshore wind farm off the Belgian coast and weather data gathered by the Flanders Marine Institute using measuring poles in the North Sea.
    Keyword
    Offshore Construction, Weather Simulation, Stochastic Scheduling, Project Scheduling
    Knowledge Domain/Industry
    Operations & Supply Chain Management
    DOI
    10.1016/j.omega.2016.01.011
    URI
    http://hdl.handle.net/20.500.12127/5492
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.omega.2016.01.011
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