Penelitian ini bertujuan untuk menganalisis pengendalian persediaan barang di PT Nusantara Bangun Mitrautama dengan menggunakan pendekatan MUSIC 3D (Multi Unit Spares Inventory Control – Three Dimensional). Pendekatan ini menggabungkan tiga metode klasifikasi, yaitu ABC, FSN, dan SDE, untuk mengelompokkan item berdasarkan nilai konsumsi, kecepatan perputaran, dan tingkat kelangkaan. Penelitian ini memfokuskan pada tiga jenis produk utama: keramik, pipa, dan seng. Berdasarkan hasil klasifikasi, dilakukan perhitungan Economic Order Quantity (EOQ), Safety stock, dan Reorder Point (ROP) guna menentukan strategi pemesanan optimal. Hasil analisis menunjukkan bahwa metode EOQ dapat menghemat biaya inventory sebesar 3%, dan pendekatan Periodic reviewmenghasilkan penghematan hingga 74% untuk produk Low Consumption Value. Dengan demikian, penerapan MUSIC 3D mampu meningkatkan efisiensi operasional, mengurangi biaya, dan memberikan kontribusi nyata dalam pengambilan keputusan manajemen persediaan perusahaan.
Kata kunci : MUSIC-3D, ABC, FSN, SDE, EOQ, Reorder point, Safety stock, Periodic review
This study aims to analyze inventory control at PT Nusantara Bangun Mitrautama using the MUSIC 3D approach (Multi Unit Spares Inventory Control – Three Dimensional). This approach integrates three classification methods—ABC, FSN, and SDE—to categorize items based on consumption value, movement frequency, and availability level. The research focuses on three main product types: ceramic tiles, pipes, and metal roofing sheets. Based on the classification results, calculations for Economic Order Quantity (EOQ), Safety stock, and Reorder Point (ROP) were carried out to determine the optimal ordering strategy. The analysis showed that the EOQ method can reduce inventory costs by 3%, while the Periodic reviewapproach leads to up to 74% savings for Low Consumption Value items. Thus, implementing the MUSIC 3D approach can improve operational efficiency, reduce costs, and significantly support inventory management decision-making in the company.
Keywords: MUSIC-3D, ABC, FSN, SDE, EOQ, Reorder Point, Safety stock, Periodic Review