To achieve management and update of highest costs versus effects by grasping the damage or deterioration in a facility into the future.
A yearly prediction soundness level in the future is calculated about a plurality of scenarios by using a current soundness level as a reference according to a plurality of types of scenarios in which the timing of component repair and component exchange is defined on the basis of its relation with at least one of prediction soundness level, the durable years of components and the durable years of assets, soundness level deterioration functions defined by component, and soundness level restoration quantity when the component repair or component exchange defined by component is performed. The execution year of the component repair or the component exchange is planned for each of the plurality of scenarios on the basis of the calculated yearly prediction soundness level. Costs which are generated in the future prescribed period are calculated about each of the plurality of scenarios, and the scenario whose periodic costs are the smallest is decided as the optimal scenario.
COPYRIGHT: (C)2009,JPO&INPIT
Tomoaki Arai
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Tadashi Inoue
Takaaki Teiaki