The environmental sanitation company analyzed in this study experiences service interruptions caused by equipment failures and stockouts, within a context in which the global average service cancellation rate reaches 31.9%, according to IBISWorld (2023). The objective of the study was to improve service level and operational continuity through the integrated implementation of Total Productive Maintenance (TPM) and an EOQ-based replenishment model with safety stock and reorder point for critical supplies. Methodologically, failures and cancellations were diagnosed, reliability indicators (MTBF, MTTR, and availability) were calculated, a preventive and autonomous maintenance plan was designed, and the EOQ, safety stock, and reorder point parameters were determined. The proposal was validated through dynamic simulation in Arena, using a statistically determined number of replications. The results show an increase in service level from 87.0% to 92.7%, an improvement in inventory compliance from 83% to 98%, and a reduction in stockouts from 4.11 to 2.92 per replication. The main contribution of the study is an integrated and replicable TPM–EOQ model, validated through simulation, for service companies that are highly dependent on equipment availability.

Keywords

Autonomous maintenance; Continuous improvement; Service level; MTTR; Training; EOQ; TPM; Environmental sanitation services.