STUDI KASUS PENGENDALIAN PERSEDIAAN KEDELAI SEBAGAI BAHAN BAKU UTAMA TAHU “TAKWA” MENGGUNAKAN FIXED ORDER QUANTITY DISCOUNT
ABSTRACT: An inventory control
of raw material in an industry is important to minimize the total cost. The
objective of this research was to control the
inventory of soybean as the main raw material in a tofu industry using the
Fixed Order Quantity Method. The method was employed to determine the optimal
quantity order, safety stock, reorder point, and to optimize the total
inventory cost. The calculations were made based on the available records of
the product demand of the previous year, and an estimation was performed for
the following year.
The results showed that the estimated cost associated with inventory for
one year ahead were Rp. 114,767,466.50 of purchasing cost, Rp. 114,794.38 of
ordering cost, Rp. 122,609.28 of holding cost and Rp. 186.05 of shortages cost.
The respective optimal values of quantity order, reorder point, and safety
stock were 1,324.12 kg, 14.52 kg, and
43.92 kg, thus the total cost was Rp 115,005,056.20. The implementation of the
method was able to reduce the inventory cost by Rp. 286,595.72 in a year. The
sensitivity analysis, if the demand and price of soybean changes, showed that
10 % up or 10 % down of the parameters would not likely affect the optimal
quantity and inventory total cost.
Key words: inventory control,
Fixed Order Quantity, cost, tofu industry
Penulis: Wike Agustin Prima
Dania, Usman Effendi, Irnia Nurika
Kode Jurnal: jppertaniandd050037
