2. Carrefour Safety Stock = s x Z = 3.222 x 1,65 = 5.316 Kg
3. Maju Bersama Safety Stock = s x Z = 3.222 x 1,65 = 5.316 Kg
4. Macan Yaohan Safety Stock = s x Z = 3.222 x 1,65 = 5.316 Kg
c. Distribution Centre Palembang Safety Stock = s x Z = 4.011 x 1,65 = 6.618 Kg
d. Distribution Centre Jambi Safety Stock = s x Z = 3.898 x 1,65 = 6.431 Kg
Tabel 5.24. Rekapitulasi Perhitungan Safety Stock dalam satuan Kg DC
Safety Stock
Aceh 13.438
Medan Suzuya
2.620 Carrefour
5.316 Maju Bersama
5.316 Macan Yaohan
5.316 Palembang
6.618 Jambi
6.431
Sumber : Pengolahan Data
5.2.5. Distribution Resources Planning Worksheet
Perencanaan DRP disusun untuk setiap DC dalam time bucket mingguan sebab lead time masing-masing DC tidak melewati 1 bulan atau hanya dalam mingguan.
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Dalam distribution resources planning worsheet terdapat beberapa istilah yang perlu diketahui yaitu :
1. On hand balance adalah jumlah persediaan awal produk yang ada pada distribution centre.
2. Safety Stock adalah persediaan untuk melindungi atau menjaga kemungkinan terjadinya kekurangan produk.
3. Lead time adalah waktu yang diperlukan dalam pelepasan order sampai order diterima di stock room pada distribution centre.
4. Order quantity adalah jumlah produk yang dikirimkan ke untuk setiap kali pemesanan
5. Demands adalah jumlah permintaan dari masing-masing distribution centre 6. In transit adalah jumlah produk yang sedang dalam proses pendistribusian
7. Projected on hand adalah persediaan yang ada dan siap digunakan. 8. Planned shipments
– Receipt Date adalah jadwal perencanaan penerimaan produk yang dikirim.
9. Planned shipments – Ship Date adalah jadwal perencanaan pengiriman produk.
Langkah-langkah pengisian Distribution Resources Planning Sheet untuk Dsitribution Centre Aceh adalah :
1. On hand balance = 19.755 Kg diperoleh dari tabel 5.3 2. Lead time = 24 jam diperoleh dari tabel 5.2
3. Order quantity = 116.065 Kg diperoleh dari tabel 5.21 4. Safety stock = 13.438 Kg
5. Projected on Hand Past Due = 19.755 Kg diperoleh dari On hand Balance
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6. Demands 1
st
Week = 50.910 Kg diperoleh dari tabel 5.25 7. In transit 1
st
Week = 0 unit 8. Planned shipments
– Ship Date = 116.065 Kg diperoleh dari Order Quantity 9. Planned shipments
– Receipt Date = 116.065 Kg diperoleh dari Order Quantity 10. Projected on hand 1
st
Week = Projected on Hand Past Due + Order quantity - Demands 1
st
Week = 19.755 + 116.065 – 50.910 = 84.910 Kg
11. Demands 2
nd
Week = 52.000 Kg diperoleh dari tabel 5.25 12. Projected on hand 2
nd
Week = Projected on hand 1
st
Week - Demands 2
nd
Week = 84.910 – 52.000 = 32.910 Kg
13. Demand 3
rd
Week = 43.980 Kg diperoleh dari tabel 5.25 14. Projected on hand 3
rd
Week = Projected on hand 2
nd
Week + Order Quantity - Demand 3
rd
Week = 32.910 + 116.065 – 43.980 = 104.995 Kg
15. Dilakukan hal yang sama dengan proses yang sama untuk 30 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara keseluruhan.
DRP Worksheet dapat dilihat pada Tabel 5.25 – Tabel 5.31.
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Tabel 5.25. Distribution Resources Planning Worksheet untuk Distribution Centre Aceh
Distribution Resources Planning Worksheet Aceh On Hand Balance : 19.755
Lead Time : 24 hour = 0 week
Safety Stock : 13.438 Order Quantity
: 116.065 Kg
Past Due Week
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 Demand
50910 52000
43980 38240
44130 42390
55120 55240
45045 50600
51045 50265
52015 58555
55800 In Transit
Projected on Hand 19.755
84.910 32.910
104.995 66.755
22.625 96.300
41.180 102.005 56.960 122.425 71.380 21.115
85.165 26.610
86.875 Planned Shipment-Receipt Date
116.065 116.065
116.065 116.065
116.065 116.065
116.065 Planed Shipments - Ship Date
116.065 116.065
116.065 116.065
116.065 116.065
116.065 Past Due
Week 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
Demand 59345
45785 47360
51860 52635
63275 65815
66895 66685
52015 58555
55800 59345
36870 38830
In Transit Projected on Hand
86.875 27.530
97.810 50.450
114.655 62.020 114.810 48.995 98.165
31.480 95.530
36.975 97.240
37.895 117.090
78.260 Planned Shipment-Receipt Date
116.065 116.065
116.065 116.065
116.065 116.065
116.065 Planed Shipments - Ship Date
116.065 116.065
116.065 116.065
116.065 116.065
116.065
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Langkah-langkah pengisian Distribution Resources Planning Sheet untuk Dsitribution Centre Medan Suzuya adalah :
1. On hand balance = 3.350 Kg diperoleh dari tabel 5.3 2. Lead time = 12 jam diperoleh dari tabel 5.2
3. Order quantity = 47.250 Kg diperoleh dari tabel 5.21 4. Safety stock = 2.620 Kg
5. Projected on Hand Past Due = 3.350 Kg diperoleh dari On hand Balance 6. Demands 1
st
Week = 25.300 Kg diperoleh dari tabel 5.26 7. In transit 1
st
Week = 0 unit 8. Planned shipments
– Ship Date = 47.250 Kg diperoleh dari Order Quantity 9. Planned shipments
– Receipt Date = 47.250 Kg diperoleh dari Order Quantity
10. Projected on hand 1
st
Week = Projected on Hand Past Due + Order quantity - Demands 1
st
Week = 3.350 + 47.250 – 25.300 = 25.300 Kg
11. Demands 2
nd
Week = 25.100 Kg diperoleh dari tabel 5.26 12. Projected on hand 2
nd
Week = Projected on hand 1
st
Week + Order quantity - Demands 2
nd
Week = 25.300 + 47.250 – 25.100 = 47.450 Kg
13. Demand 3
rd
Week = 23.115 Kg diperoleh dari tabel 5.26 14. Projected on hand 3
rd
Week = Projected on hand 2
nd
Week - Demand 3
rd
Week = 47.450 – 23.115 = 24.335 Kg
15. Dilakukan hal yang sama dengan proses yang sama untuk 30 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara
keseluruhan.
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Tabel 5.26. Distribution Resources Planning Worksheet untuk Distribution Centre Medan Suzuya
Distribution Resources Planning Worksheet Suzuya On Hand Balance :
3.350 Lead Time :
12 hour = 0 week
Safety Stock : 2.620 Order
Quantity : 47.250 Kg
Past Due Week
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 Demand
25300 25100
23115 22475
21865 21465
21365 22765
25580 24140
22655 22280
25505 22730
22875 In Transit
Projected on Hand 3350
25.300 47.450
24.335 49.110
27.245 5.780
31.665 8.900
30.570 6.430
31.025 8.745
30.490 7.760
32.135 Planned Shipment-Receipt Date
47.250 47.250
47.250 47.250
47.250 47.250
47.250 47.250
Planed Shipments - Ship Date 47.250
47.250 47.250
47.250 47.250
47.250 47.250
47.250 Past Due
Week 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
Demand 23580
23180 22690
25490 25280
23115 25115
25705 22515
25505 22730
22875 23580
27345 26495
In Transit Projected on Hand
32.135 8.555
32.625 9.935
31.695 6.415
30.550 5.435
26.98 4.465
26.210 3.480
27.855 4.275
24.180 44.935
Planned Shipment-Receipt Date 47.250
47.250 47.250
47.25 47.250
47.250 47.250
47.250 Planed Shipments - Ship Date
47.250 47.250
47.250 47.25
47.250 47.250
47.250 47.250
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Langkah-langkah pengisian Distribution Resources Planning Sheet untuk Dsitribution Centre Medan Carrefour adalah :
1. On hand balance = 6.230 Kg diperoleh dari tabel 5.3 2. Lead time = 12 jam diperoleh dari tabel 5.2
3. Order quantity = 44.726 Kg diperoleh dari tabel 5.21 4. Safety stock = 5.316 Kg
5. Projected on Hand Past Due = 6.230 Kg diperoleh dari On hand Balance 6. Demands 1
st
Week = 24.855 Kg diperoleh dari tabel 5.27 7. In transit 1
st
Week = 0 unit 8. Planned shipments
– Ship Date = 44.726 Kg diperoleh dari Order Quantity 9. Planned shipments
– Receipt Date = 44.726 Kg diperoleh dari Order Quantity
10. Projected on hand 1
st
Week = Projected on Hand Past Due + Order quantity - Demands 1
st
Week = 6.230 + 44.726 – 24.855 = 26.101 Kg
11. Demands 2
nd
Week = 23.680 Kg diperoleh dari tabel 5.27 12. Projected on hand 2
nd
Week = Projected on hand 1
st
Week + Order quantity - Demands 2
nd
Week = 26.101 + 44.726 – 23.680 = 47.147 Kg
13. Demand 3
rd
Week = 26.030 Kg diperoleh dari tabel 5.27 14. Projected on hand 3
rd
Week = Projected on hand 2
nd
Week - Demand 3
rd
Week = 47.147 – 26.030 = 21.117 Kg
15. Dilakukan hal yang sama dengan proses yang sama untuk 30 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara
keseluruhan.
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Tabel 5.27. Distribution Resources Planning Worksheet untuk Distribution Centre Medan Carrefour
Distribution Resources Planning Worksheet Carrefour On Hand Balance
: 6.230 Lead Time : 12 hour = 0 week
Safety Stock : 5.316
Order Quantity : 44.726 Kg
Past Due
Week 1
2 3
4 5
6 7
8 9
10 11
12 13
14 15
Demand 24855
23680 26030
24475 25475
23815 19150
21160 17365
17935 18205
19970 23730
21885 21654
In Transit Projected on Hand
6230 26.101
47.147 21.117
41.368 15.893
36.804 17.654
41.220 23.85
5 5.920
32.441 12.471
33.467 11.582
34.654 Planned Shipment-Receipt Date
44.726 44.726
44.726 44.726
44.726 44.726
44.726 44.726
Planed Shipments - Ship Date 44.726
44.726 44.726
44.726 44.726
44.726 44.726
44.726 Past
Due Week
16 17
18 19
20 21
22 23
24 25
26 27
28 29
30 Demand
22650 17565
17665 17995
17985 17855
18000 18055
18175 23730
21885 21645
22650 27545
27335 In Transit
Projected on Hand 34.654
12.004 39.165
21.500 48.231
30.246 12.391
39.117 21.062
47.61 3
23.883 46.724
25.079 47.155
19.610 37.001
Planned Shipment-Receipt Date 44.726
44.726 44.726
44.72 6
44.726 44.726
44.726 Planed Shipments - Ship Date
44.726 44.726
44.726 44.72
6 44.726
44.726 44.726
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Langkah-langkah pengisian Distribution Resources Planning Sheet untuk Dsitribution Centre Medan Maju Bersama adalah :
1. On hand balance = 6.230 Kg diperoleh dari tabel 5.3 2. Lead time = 12 jam diperoleh dari tabel 5.2
3. Order quantity = 45.762 Kg diperoleh dari tabel 5.21 4. Safety stock = 5.316 Kg
5. Projected on Hand Past Due = 6.230 Kg diperoleh dari On hand Balance 6. Demands 1
st
Week = 25.855 Kg diperoleh dari tabel 5.28 7. In transit 1
st
Week = 0 unit 8. Planned shipments
– Ship Date = 45.762 Kg diperoleh dari Order Quantity 9. Planned shipments
– Receipt Date = 45.762 Kg diperoleh dari Order Quantity
10. Projected on hand 1
st
Week = Projected on Hand Past Due + Order quantity - Demands 1
st
Week = 6.230 + 45.762 – 25.855 = 26.137 Kg
11. Demands 2
nd
Week = 24.680 Kg diperoleh dari tabel 5.28 12. Projected on hand 2
nd
Week = Projected on hand 1
st
Week + Order quantity - Demands 2
nd
Week = 26.137 + 45.762 – 24.680 = 47.219 Kg
13. Demand 3
rd
Week = 27.030 Kg diperoleh dari tabel 5.28 14. Projected on hand 3
rd
Week = Projected on hand 2
nd
Week - Demand 3
rd
Week = 47.219 – 27.030 = 20.189 Kg
15. Dilakukan hal yang sama dengan proses yang sama untuk 30 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara
keseluruhan.
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Tabel 5.28. Distribution Resources Planning Worksheet untuk Distribution Centre Medan Maju Bersama
Distribution Resources Planning Worksheet Maju Bersama On Hand
Balance : 6.230
Lead Time : 12 hour = 0 week Safety
Stock : 5.316
Order Quantity : 45.762Kg
Past Due
Week 1
2 3
4 5
6 7
8 9
10 11
12 13
14 15
Demand 25855
24680 27030
25475 26475
24815 20150
22160 18365
18935 19205
20975 24730
22885 22645
In Transit Projected on Hand
6230 26.137 47.219 20.189 40.476 14.001 34.948 14.798 38.400 20.035 46.862 27.657
6.682 27.714 50.591 27.946
Planned Shipment-Receipt Date
45.762 45.762 45.762
45.762 45.762
45.762 45.762 45.762
Planed Shipments - Ship Date 45.762 45.762
45.762 45.762
45.762 45.762
45.762 45.762 Past
Due Week
16 17
18 19
20 21
22 23
24 25
26 27
28 29
30 Demand
23650 18565
18665 18995
18985 18860
19000 19060
19180 24730
22885 22640
23650 28550
28335 In Transit
Projected on Hand 27.946 50.058 31.493 12.828 39.595 20.610 47.512 28.512
9.452 36.034 11.304 34.181 11.541 33.653 50.865 22.530
Planned Shipment-Receipt Date
45.762 45.762
45.762 45.762
45.762 45.762 45.762
Planed Shipments - Ship Date 45.762
45.762 45.762
45.762 45.762
45.762 45.762
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Langkah-langkah pengisian Distribution Resources Planning Sheet untuk Dsitribution Centre Medan Macan Yaohan adalah :
1. On hand balance = 6.230 Kg diperoleh dari tabel 5.3 2. Lead time = 12 jam diperoleh dari tabel 5.2
3. Order quantity = 45.247 Kg diperoleh dari tabel 5.21 4. Safety stock = 5.316 Kg
5. Projected on Hand Past Due = 6.230 Kg diperoleh dari On hand Balance 6. Demands 1
st
Week = 25.350 Kg diperoleh dari tabel 5.29 7. In transit 1
st
Week = 0 unit 8. Planned shipments
– Ship Date = 45.247 Kg diperoleh dari Order Quantity 9. Planned shipments
– Receipt Date = 45.247 Kg diperoleh dari Order Quantity
10. Projected on hand 1
st
Week = Projected on Hand Past Due + Order quantity - Demands 1
st
Week = 6.230 + 45.247 – 25.350 = 26.127 Kg
11. Demands 2
nd
Week = 24.180 Kg diperoleh dari tabel 5.29 12. Projected on hand 2
nd
Week = Projected on hand 1
st
Week + Order quantity - Demands 2
nd
Week = 26.127 + 45.247 – 24.180 = 47.194 Kg
13. Demand 3
rd
Week = 26.530 Kg diperoleh dari tabel 5.29 14. Projected on hand 3
rd
Week = Projected on hand 2
nd
Week - Demand 3
rd
Week = 47.194 – 26.530 = 20.664 Kg
15. Dilakukan hal yang sama dengan proses yang sama untuk 30 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara
keseluruhan.
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Tabel 5.29. Distribution Resources Planning Worksheet untuk Distribution Centre Medan Macan Yaohan
Distribution Resources Planning Worksheet Macan Yaohan On Hand
Balance : 6.230
Lead Time : 12 hour = 0 week Safety
Stock : 5.316
Order Quantity : 45.247 Kg
Past Due Week
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 Demand
25350 24180
26530 24980
25975 24310
19645 21665
17860 18440
18710 20470
24230 22380
22140 In Transit
Projected on Hand 6230
26.127 47.194 20.664 40.931 14.956 35.893 16.248 39.830 21.970 48.777 30.067 9.597
30.614 8.234
31.341 Planned Shipment-Receipt Date
45.247 45.247 45.247
45.247 45.247
45.247 45.247
45.247 Planed Shipments - Ship Date
45.247 45.247 45.247
45.247 45.247
45.247 45.247
45.247 Past Due
Week 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
Demand 23150
18065 18165
18505 18495
18355 18500
18555 18675
24230 22380
22145 23150
28045 27830
In Transit Projected on Hand
31.341 8.191
35.373 17.208 43.950 25.455 7.100
33.847 15.292 41.864 17.634 40.501 18.356 40.453 12.408 29.825 Planned Shipment-Receipt Date
45.247 45.247
45.247 45.247
45.247 45.247
45.247 Planed Shipments - Ship Date
45.247 45.247
45.247 45.247
45.247 45.247
45.247
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Langkah-langkah pengisian Distribution Resources Planning Sheet untuk Dsitribution Centre Palembang adalah :
1. On hand balance = 7.420 Kg diperoleh dari tabel 5.3 2. Lead time = 50 jam diperoleh dari tabel 5.2
3. Order quantity = 147.346 Kg diperoleh dari tabel 5.21 4. Safety stock = 6.618 Kg
5. Projected on Hand Past Due = 7.420 Kg diperoleh dari On hand Balance 6. Demands 1
st
Week = 61.765 Kg diperoleh dari tabel 5.30 7. In transit 1
st
Week = 0 unit 8. Planned shipments
– Ship Date = 147.346 Kg diperoleh dari Order Quantity 9. Planned shipments
– Receipt Date = 147.346 Kg diperoleh dari Order Quantity 10. Projected on hand 1
st
Week = Projected on Hand Past Due + Order quantity - Demands 1
st
Week = 7.420 + 147.346 Kg – 61.765 = 85.581 Kg
11. Demands 2
nd
Week = 66.190 diperoleh dari tabel 5.30 12. Projected on hand 2
nd
Week = Projected on hand 1
st
Week - Demands 2
nd
Week = 85.581
– 66.190 = 19.391 Kg 13. Demand 3
rd
Week = 64.825 Kg diperoleh dari tabel 5.30 14. Projected on hand 3
rd
Week = Projected on hand 2
nd
Week + order quantity - Demand 3
rd
Week = 19.391 + 147.346 Kg – 64.285 = 102.452 Kg
15. Dilakukan hal yang sama dengan proses yang sama untuk 30 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara keseluruhan.
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Tabel 5.30. Distribution Resources Planning Worksheet untuk Distribution Centre Palembang
Distribution Resources Planning Worksheet Palembang On Hand Balance :
7.420 Lead Time : 50
hour = 0 week Safety Stock : 6.618
Order Quantity : 147.346 Kg
Past Due
Week 1
2 3
4 5
6 7
8 9
10 11
12 13
14 15
Demand 61765
66190 64285
57725 61255
63265 62935
64685 71755
65430 68990
69540 63210
67425 70185
In Transit Projected on Hand
85.581 19.391
102.452 44.727
130.818 67.553
4.618 87.279
15.524 97.440
28.450 106.256
43.046 122.967
52.782 Planned Shipment-Receipt
Date 7.420
147.346 147.346
147.346 147.346
147.346 147.346
147.346 Planed Shipments - Ship
Date 147.346
147.346 147.346
147.346 147.346
147.346 147.346
Past Due
Week 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
Demand 64000
61360 62245
61600 62600
59275 64835
63205 72165
63210 67425
70185 64000
57095 58005
In Transit Projected on Hand
52.782 136.128
74.768 12.523
98.269 35.669
123.740 58.905 143.046 70.881 7.671
87.592 17.407
100.753 43.658
132.999 Planned Shipment-Receipt
Date 147.346
147.34 6
147.346 147.346
147.346 147.346
147.346 Planed Shipments - Ship
Date 147.346
147.34 6
147.346 147.346
147.346 147.346
147.346
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Langkah-langkah pengisian Distribution Resources Planning Sheet untuk
Dsitribution Centre Jambi adalah : 1. On hand balance = 7.286 Kg diperoleh dari tabel 5.3
2. Lead time = 43 jam diperoleh dari tabel 5.2 3. Order quantity = 108.833 Kg diperoleh dari tabel 5.21
4. Safety stock = 6.431 Kg 5. Projected on Hand Past Due = 7.286 Kg diperoleh dari On hand Balance
6. Demands 1
st
Week = 32.735 Kg diperoleh dari tabel 5.31 7. In transit 1
st
Week = 0 unit 8. Planned shipments
– Ship Date = 108.833 Kg diperoleh dari Order Quantity 9. Planned shipments
– Receipt Date = 108.833 Kg diperoleh dari Order Quantity
10. Projected on hand 1
st
Week = Projected on Hand Past Due + Order quantity - Demands 1
st
Week = 7.286 + 108.833 – 32.735 = 83.384 Kg
11. Demands 2
nd
Week = 34.770 Kg diperoleh dari tabel 5.31 12. Projected on hand 2
nd
Week = Projected on hand 1
st
Week - Demands 2
nd
Week = 83.384 – 34.770 = 48.614 Kg
13. Demand 3
rd
Week = 39.970 Kg diperoleh dari tabel 5.31 14. Projected on hand 3
rd
Week = Projected on hand 2
nd
Week - Demand 3
rd
Week = 48.614 – 39.970 = 8.644 Kg
15. Dilakukan hal yang sama dengan proses yang sama untuk 30 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara
keseluruhan.
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Tabel 5.31. Distribution Resources Planning Worksheet untuk Distribution Centre Jambi
Distribution Resources Planning Worksheet Jambi On Hand
Balance : 7.286 Lead Time : 43
hour = 0 week Safety Stock :
6.431 Order Quantity
: 108.833 Kg
Past Due Week
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 Demand
32735 34770
39970 4095
5 42015
4047 37190
36710 36065
38495 44100
37590 37085
35280 37405
In Transit Projected on Hand
7286 83.38
4 48.61
4 8.644
76.52 2
34.507 102.8
70 65.68
28.970 101.738
63.243 19.14
3 90.386
53.301 18.021
89.44 9
Planned Shipment-Receipt Date 108.8
33 108.8
33 108.8
33 108.833
108.83 3
108.8 33
Planed Shipments - Ship Date 108.8
33 108.8
33 108.8
33 108.833
108.83 3
108.8 33
Past Due Week
16 17
18 19
20 21
22 23
24 25
26 27
28 29
30 Demand
36325 4190
48640 4698
46255 4241
5 40730
39810 36370
37085 3740
36125 35485
34620 3598
In Transit Projected on Hand
89.449 53.124
11.22 4
71.417 24.43
7 87.015
44.60 112.703
72.893 36.523
108.271 70.87
1 34.746
108.094 73.474
37.49 4
Planned Shipment-Receipt Date 108.833
108.83 3
108.833 108.833
108.833 Planed Shipments - Ship Date
108.833 108.83
3 108.833
108.833 108.833
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Pada tabel 5.25 sampai tabel 5.31 dapat dilihat DRP worksheet pada setiap distribution centre dimana memperlihatkan sistem kegiatan perencanaan
dan penjadwalan distribusi di distribution centre dengan menggunakan metode DRP.
DRP worksheet dilakukan untuk memperlihatkan secara detail dan jelas jumlah permintaan, safety stock, order quantity dan lead time. Order quantity
merupakan jumlah pengiriman produk yang optimal dan safety stock merupakan titik acuan pemesanan kembali produk.
5.2.6. Pegging Information
