Modeling Logistics of Maintenance Repair and Operations in Large Facilities
In this paper, we study maintenance service operations in large facilities with a focus on modeling logistics of associated spare parts and their storage locations. This is motivated by the operational needs of maintenance of large facilities consisting of hundreds of buildings across multiple locations that are serviced by hundreds of personnel from several distinct trades who move around buildings in their vehicles. The key challenge in managing such large operations is to generate costs savings by reducing assets and shortage costs in terms of spare parts inventory and vehicles while providing highly responsive customer service. This challenge is compounded when the building stock is heterogeneous in terms of age and equipment technologies used. To address these challenges, we propose (i) inventory models to determine stock levels; (ii) storage space in personnel vehicles to allocate the mix and location of spare parts by trade. The two models can be readily integrated and conceptually technician vehicles serve as “forward-reserve storage” that improves service responsiveness but has limited storage capacity. The proposed model is applied to a large facility of a non-profit organization with 330 buildings, 17,000 spare parts, and 254 vehicles. Compared to prevailing practice, the proposed model can potentially reduce $1.27 million worth of inventory costs, a reduction of ~77%.
Advisor Name: Dr. Vittaldas Prabhu Advisor Title: Professor
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|Work Title||Modeling Logistics of Maintenance Repair and Operations in Large Facilities|
|License||In Copyright (Rights Reserved)|
|Work Type||Research Paper|
|Deposited||July 20, 2021|
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