PENERAPAN METODE MATERIAL REQUIREMENT PLANNING (MRP) DALAM PERENCANAAN PERSEDIAAN BAHAN BAKU BIJI PLASTIK UNTUK MEMINIMUMKAN BIAYA PERSEDIAAN PADA PT UNISON JAYA DI TANGERANG

One of the most important things in production activity is how to manage a raw material requirement level in economics level to support production planning activities. An established company usually uses Material Requirement Planning (MRP) method to provide an effective management system of material requirement to minimize inventory cost. This research found out that, PT Unison Jaya needs to use Material Requirement Planning (MRP) method to minimize the inventory cost. When PT Unison Jaya decided to use Material Requirement Planning (MRP)method, they need to support their system in to computerize system and held on the job training for the production staff to use this method.Key words: Lot Sizing, Inventory Cost, MR