MATERIAL
REQUIREMENT PLANNING (MRP )
Sabtu, 9 Desember 2023
Material Requirement Planning
⊡ Metode Lot For Lot (LFL)
⊡ Metode Economic Order Quantity (EOQ)
⊡ Metode Period Order Quantity (POQ)
⊡ Metode Least Unit Cost (LUC)
⊡ Metode Least Total Cost (LTC)
⊡ Metode Part Period Balancing (PPB)
DATA YANG DIGUNAKAN (LAMPIRAN)
⊡ Data Hasil Peramalan
⊡ Data Struktur Produk
⊡ Bill Of Material (BOM)
⊡ Item Master Record
STRUKTUR PRODUK
BILL OF MATRIAL (BOM)
Level Kode Item Nama Komponen Jumlah Harga/unit Total
0 A1 Tamiya 1 Rp 30.000 Rp 30.000
1
B1 Body 1 Rp 5.900 Rp 5.900
B2 Chassis Rangka 1 Rp 5.750 Rp 5.750
B3 Ban 4 Rp 500 Rp 2.000
B4 Pengunci 1 Rp 400 Rp 400
2
C1 Penutup Gear Depan 1 Rp 1.400 Rp 1.400
C2 Penutup Gear Belakang 1 Rp 1.500 Rp 1.500
C3 Pengikat Baterai 1 Rp 850 Rp 850
C4 Ash 2 Rp1.500 Rp3.000
3
D1 Dinamo 1 Rp 5.000 Rp 5.000
D2 Gear Depan 1 Rp 600 Rp 600
D3 Gear Belakang 1 Rp 700 Rp 700
D4 Gardan 1 Rp 900 Rp 900
D5 Plat tembaga Depan 1 Rp 1.600 Rp 1.600
D6 Switch On-Off 1 Rp 400 Rp 400
ITEM MASTER RECORD
No Kode
Item Keterangan Lot Sizing Ongkos Pesan (Rp/Pesan)
Ongkso Simpan (Rp/Pesan)
Lead time (Bulan)
Harga Satuan
1 A1 Tamiya LFL 130.000 65 1 Rp 30.000
2 B1 Body LTC, LUC, EOQ,
POQ, PPB 130.000 65 1 Rp 5.900
3 B2 Chassis Rangka LFL 130.000 65 1 Rp 5.750
4 B3 Ban LFL 130.000 65 1 Rp 500
5 B4 Pengunci LTC, LUC, EOQ,
POQ, PPB 130.000 65 1 Rp 400
6 C1 Penutup Gear
Depan LFL 130.000 65 1 Rp 1.400
7 C2 Penutup Gear
Belakang LFL 130.000 65 1 Rp 1.500
8 C3 Penutup Baterai LTC, LUC, EOQ,
POQ, PPB 130.000 65 1 Rp 850
9 C4 Ash LTC, LUC, EOQ,
POQ, PPB 130.000 65 1 Rp1.500
10 D1 Dinamo LTC, LUC, EOQ,
POQ, PPB 130.000 65 1 Rp 5.000
LOT FOR LOT (LFL)
0 1 2 3 4 5 6 7 8 9 10 11 12
GR 548 812 826 841 855 870 886 901 917 933 950 967
SR 548
POH 0 0 0 0 0 0 0 0 0 0 0 0 0
PoRec 548 812 826 841 855 870 886 901 917 933 950 967
PoRel 812 826 841 855 870 886 901 917 933 950 967
ECONOMIC ORDER QUANTITY (EOQ)
0 1 2 3 4 5 6 7 8 9 10 11 12
GR 812 826 841 855 870 886 901 917 933 950 967
SR 6421
POH 5609 4783 3942 3087 2217 1331 430 5934 5001 4051 3084
PoRec 6421 6421
PoRel 6421
PERIOD ORDER QUANTITY (POQ)
0 1 2 3 4 5 6 7 8 9 10 11 12
GR 812 826 841 855 870 886 901 917 933 950 967
SR 5991
POH 5179 4353 3512 2657 1787 901 0 2850 1917 967 0
PoRec 5991 3767
PoRel 3767
EOQ = = = 6420,59 ≈ 6421 unit
N = = = 1,6 POQ = = 6,8 ≈ 7
LEAST UNIT COST (LUC)
Periode Jumlah Order
Ongkos
Pesan Ongkos Simpan Ongkos
Total
Ongkos Per Unit
1 812 130.000 0 130.000 160,10
1 - 2 1638 130.000 826 × 65 = 53690 183.690 112,14
1 - 3 2479 130.000 (826×65)+(841×130)= 163020 293.020 118,20
3 841 130.000 0 130.000 154,58
3 - 4 1696 130.000 855 × 65 = 55575 185.575 109,42
3 - 5 2566 130.000 (855×65)+(870×130)= 168675 298.675 116,40
5 870 130.000 0 130.000 149,43
5 - 6 1756 130.000 886 × 65 = 57590 187.590 106,83
5 - 7 2657 130.000 (886×65)+(901×130)= 174720 304.720 114,69
7 901 130.000 0 130.000 144,28
7 - 8 1818 130.000 917 × 65 = 59605 189.605 104,29
7 - 9 2751 130.000 (917×65)+(933×130)= 180895 310.895 113,01
9 933 130.000 0 130.000 139,34
9 - 10 1883 130.000 950 × 65 61750 191.750 101,83
9 - 11 2850 130.000 (950×65)+(967×130)= 187460 317.460 111,39
11 967 130.000 0 130.000 134,44
LEAST UNIT COST (LUC)
0 1 2 3 4 5 6 7 8 9 10 11 12
GR 812 826 841 855 870 886 901 917 933 950 967
SR 1638
POH 826 0 855 0 886 0 917 0 950 0 0
PoRec 1638 1696 1756 1818 1883 967
PoRel 1696 1756 1818 1883 967
LEAST TOTAL COST (LTC)
Periode Jumlah Order
Periode
Simpan Ongkos Periode Simpan Kumulatif Ongkos
1 812 0 0 0
2 826 1 826 × 65 × 1 = 53.690 53.690
3 841 0 0 0
4 855 1 855 × 65 × 1 = 55.575 55.575
5 870 0 0 0
6 886 1 886 × 65 × 1 = 57.590 57.590
7 901 0 0 0
8 917 1 917 × 65 × 1 = 59.605 59.605
9 933 0 0 0
10 950 1 950 × 65 × 1 = 61.750 61.750
11 967 0 0 0
LEAST TOTAL COST (LTC)
0 1 2 3 4 5 6 7 8 9 10 11 12
GR 812 826 841 855 870 886 901 917 933 950 967
SR 1638
POH 826 0 855 0 886 0 917 0 950 0 0
PoRec 1638 1696 1756 1818 1883 967
PoRel 1696 1756 1818 1883 967
PART PERIOD BALANCING (PPB)
Periode Jumlah Order
Periode
Simpan Bagian Periode Simpan Kumulatif Bagian
1 812 0 0 0
2 826 1 826 826
3 841 0 0 0
4 855 1 855 855
5 870 0 0 0
6 886 1 886 886
7 901 0 0 0
8 917 1 917 917
9 933 0 0 0
10 950 1 950 950
EPP = = = 2000 unit/periode
PART PERIOD BALANCING (PPB)
0 1 2 3 4 5 6 7 8 9 10 11 12
GR 812 826 841 855 870 886 901 917 933 950 967
SR 1638
POH 826 0 855 0 886 0 917 0 950 0 0
PoRec 1638 1696 1756 1818 1883 967
PoRel 1696 1756 1818 1883 967
