Analisis Pengendalian Persediaan Bahan Kimia Tawas dengan Metode EOQ dan JIT Pada Perumda Giri Tirta Gresik

Salman Alfi Yuganta (Universitas Muhammadiyah Gresik, Indonesia)
Hidayat Hidayat (Universitas Muhammadiyah Gresik, Indonesia)
Moh. Jufriyanto (Universitas Muhammadiyah Gresik, Indonesia)

G-Tech : Jurnal Teknologi Terapan
Vol 8 No 3 (2024): G-Tech, Vol. 8 No. 3 Juli 2024

Perumda Giri Tirta is a BUMD company owned by the Gresik Regency Government which is engaged in drinking water management services. Perumda Giri Tirta requires alum material to produce with orders 15 times a year with a total usage of 1,588,215 kg at a cost incurred by the company of Rp. 22,182,299. When compared with 2 inventory control methods, namely Economic Order Quantity and Just In Time, a more efficient calculation will be produced. The results of calculations with the EOQ method the frequency of ordering is 7 times at a cost of Rp. 17,352,969 or 88% more efficient than the cost according to Perumda Giri Tirta's policy. Meanwhile, with the JIT method, orders were made 3 times at a cost of Rp. 6,573,094 or 95% less than the cost according to Perumda Giri Tirta's policy.