Determination of lead time arrival of raw materials optimal vannamei shrimp at PT. XYZ Makassar

Abstract

Inventory control is the efforts made by a company so that the production process can be optimally fulfilled with the smallest possible risk. The problem of raw material requirements and costs incurred for the production process is very important, because with the existence of raw materials the production process can run smoothly. This study aims to determine the amount of economical Vannamei shrimp raw material inventory and to know when the order should be done with PT. XYZ Makassar. Where the need for raw materials in 2017 was 1,855,558 kg. Therefore, companies must control the supply of raw materials that are economical and efficient in order to meet the production process for each specified period, determine the optimal waiting time for the arrival of raw materials and determine the quantity of orders that are economical. Based on the results of research determining the optimal waiting time for arrival of raw materials at PT XYZ Makassar using the Economic Order Quantity (EOQ) method, obtained an economical raw material inventory of 20,672 kg per message with a total inventory cost of Rp.136,586,577 each time message. With the Stock Out Cost (SOC) and Extra Carrying Cost (ECC) method, the optimal waiting time for arrival of raw materials is 3 days with a minimum cost of Rp. 1,836,979,830 and with the Reorder Point (ROP) method, the results of the order are made again at the level inventory in warehouse 18,555 kg.