Gestão de estoques de manutenção, reparo e operação: um estudo de caso em uma indústria petroquímica

Abstract

This final paper has the objective of defining which the replacement strategies are adequate for MRO items, in the context of a Petrochemical Industry. The actualy stock of spare parts has several items with non-regulated aftermarket models, high stock levels that do not guarantee meeting monthly demands, high storage costs and requests and many emergency purchase requests during the year increasing the risk of stock out. Initially, the data were collected from all seventeen thousand items registered in the system and 9981 stockable items were analyzed. These 9981 stockable items were reclassified according to their levels of criticality in criticals and non-criticals and were classified according to consumption in very low consumption, low consumption and high consumption materials for better prioritization, understanding and adequacy of stock levels with existing demands and regulation of working capital with the stocks. Each group was analyzed individually, and stock replacement strategies were assigned in accordance with the concepts of demand forecasting and classification of spare parts by type of demand that best suited the reality of the Company studied. Items that will continue to be stocked now follow a base stock policy with a parameter defined by the item's lead time or annual consumption demands. At the end, all inventory items were analyzed, replacement policies were defined and established a methodology for periodic inventory.