Speaker
Description
The DEMO Oriented Neutrons Source (DONES) is the dedicated facility for testing and enabling of the qualification for different materials to be utilized in the future fusion reactor DEMO. The neutron irradiation damages not only the material samples to be tested but also impacts the plant hardware in and around the Test Cell.
For that reason, preventive and predictive maintenance activities must be scheduled regularly to avoid critical failures during the neutron irradiation tests. Scores of parts and components have to be replaced, which causes a dense and complex flow of irradiated and non-irradiated materials.
In order to keep the availability high, the overarching goal is a short as possible downtime.
The Flow of Material has to be carefully analyzed considering all related boundary conditions of parts and components like sizes, shapes, weights and etc. of parts and components with the aim for an optimum plant layout. Next the transportation processes have to be modelled and subsequently can be simulated in order to find the optimum arrangement of transportation processes. Taking into account the previous results a maintenance management plan can be designed comprising amongst others an optimum warehouse location and spare part policy. The latter helps e.g. avoiding stock-outs by optimizing aspects of safety stock level, reorder points, replenishment processes and etc.
These processes have to be tackled in an integrated manner and may lead to an optimum Availability-to-Cost-Ratio from the logistics point of view.
In this paper an overview on the different methods of logistics optimization, the individual approaches and goals as well as on their interdependencies is given. Input and output data, boundary conditions, description of the process of integration, and etc. complement the paper.
