Pengendalian Persediaan Untuk Mengurangi Biaya Total Persediaan Dengan Pendekatan Metode Periodic Review (R,s,S) Power Approximation Pada Suku Cadang Consumable (Studi Kasus : Job Pertamina Talisman Jambi Merang)

Abstract

Spare parts is one of the production support components which plays an important role for the survival of gas production in the gas processing facility owned by SKN JOB Pertamina Talisman Jambi Merang. The high inventory level increased the high inventory cost for the industry which get the benefit from the efficiency of processes and resources. This research involved consumable spare parts for Solar Turbine engine as much as 25 SKUs with demand character patterned lumpy demand and Poisson distribution. The implementation of policies using Periodic Review (R, s, S) with Power Approximation approach in the inventory system capable to generate a lower total cost inventory by pressing the backorder volume, the booking volume and the inventory levels in a balanced manner. Calculation of Periodic Review (R, s, S) with Power Approximation approach resulted inventory parameter which was able to press the total cost of inventory at 8.54% lower and increase the service level by 1.11%.