distribution center pada setiap bulannya dengan jumlah minggu yang ada pada
setiap bulannya.Jumlah permintaan distribution center untuk setiap minggu dapat
dilihat pada Tabel 5.17. Tabel 5.17. Jumlah Permintaan
Distribution Center Setiap Minggu
Jumlah Permintaan Setiap Minggu Unit Periode
Jumlah Minggu
Langsa Stabat
Pekanbaru Palembang
Januari 2015 5
29 22
44 36
Februari 2015 4
36 28
55 43
Maret 2015 4
37 28
55 42
April 2015 5
30 23
45 33
Mei 2015 4
39 29
56 41
Juni 2015 4
39 29
56 40
Juli 2015 5
32 24
45 31
Agustus 2015 4
41 30
57 38
September 2015 4
41 30
57 37
Oktober 2015 5
34 24
46 29
November 2015 4
43 31
58 35
Desember 2015 4
44 31
58 34
Sumber : Pengolahan Data
5.2.6. Distribution Requirement Planning Worksheet
Dari perhitungan data diatas, maka dapat disusun perencanaan distribution requirement planning
untuk setiap distribution center dalam time bucket mingguan sebab lead time masing-masing distribution center tidak melewati 1 bulan atau hanya
dalam mingguan. Dalam distribution requirement planning worksheet terdapat beberapa istilah
yang perlu diketahui, yaitu: 1. On Hand Balance adalah jumlah persediaan awal produk yang ada pada
distribution center. 2. Safety Stock adalah
persediaan untuk melindungi atau menjaga kemungkinan terjadinya kekurangan produk.
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3. Lead Time
adalah waktu yang diperlukan dalam pelepasan order sampai order diterima di stock room pada distribution center.
4. Order Quantity adalah jumlah produk yang dikirimkan ke untuk setiap kali pemesanan.
5. Demands Forecast adalah peramalan jumlah permintaan dari masing-masing distribution center.
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.
Distribution Requirement Planning Worksheet untuk setiap masing-masing
distribution center dapat dilihat pada Tabel 5.18 hingga Tabel 5.21.
Langkah-langkah pengisian distribution requirement planning sheet untuk distribution center
Langsa adalah: 1. On Hand Balance = 20 unit Status persediaan awal distribution center
Langsa, diperoleh dari Tabel 5.3. 2. Lead Time = 8 hours
≈ 15 week Lead Time pendistribusian produk dari PT. Pancakarsa Bangun Reksa ke distribution center Langsa, diperoleh dari Tabel
5.2. 3. OrderQuantity = 86 unit diperoleh dari Tabel 5.14.
4. Safety Stock = 18 unit diperoleh dari Tabel 5.16. 5. Projected on Hand Past Due = 20 unit diperoleh dari On Hand Balance
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6. Demands Forecast 1
s t
Week = 29 unit diperoleh dari Tabel 5.17.
7. In Transit 1
st
Week = 0, tidak adanya produk yang sedang dalam proses
pengiriman 8. Planned Shipments - Ship Date = 86 unit diperoleh dari Order Quantity
9. Planned Shipments - Receipt Date = 86 unit diperoleh dari Order Quantity 10. Projected on Hand 1
st
Week = Projected on Hand Past Due + Order
Quantity – Demands Forecast 1
st
Week = 20 + 86 – 29 = 77 unit
11. Demands Forecast 2
nd
Week = 29 unit diperoleh dari Tabel 5.17.
12. Projected on Hand 2
nd
Week = Projected on Hand 1
st
Week – Demands Forecast 2
nd
Week = 77 – 29 = 48 unit
13. Demands Forecast 3
rd
Week = 29 unit diperoleh dari Tabel 5.17.
14. Projected on Hand 3
rd
Week = Projected on Hand 2
nd
Week – Demands Forecast 3
rd
Week = 48 – 19 = 19 unit
15. Dilakukan hal yang sama hingga minggu ke 52 sehingga distribution requirement planning sheet
untuk distribution center Langsa terisi keseluruhan.
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Tabel 5.18. Distribution Requirement Planning Sheet untuk DistributionCenter Langsa
Distribution Requirement Planning Sheet untuk DistributionCenter Langsa
On Hand Balance : 20
Lead Time :8 hours
≈ 15 week Safety Stock
: 18 Order Quantity
: 86 Distribution Center
:Langsa
Past Due
Week 1
2 3
4 5
6 7
8 9
10 11
12 13
Demands Forecast 29
29 29
29 29
36 36
36 36
37 37
37 37
In Transit Projected on Hand
20 77
48 19
76 47
97 61
25 75
38 87
50 99
Planned Shipments - Receipt Date
86 86
86 86
86 86
Planned Shipments - Ship Date
86 86
86 86
86 86
Past Due
Week 14
15 16
17 18
19 20
21 22
23 24
25 26
Demands Forecast
30 30
30 30
30 39
39 39
39 39
39 39
39
In Transit Projected on Hand
99 69
39 95
65 35
82 43
90 51
98 59
20 67
Planned Shipments - Receipt Date
86 86
86 86
86
Planned Shipments - Ship Date 86
86 86
86 86
Past Due
Week 27
28 29
30 31
32 33
34 35
36 37
38 39
Demands Forecast
32 32
32 32
32 41
41 41
41 41
41 41
41
In Transit Projected on Hand
67 35
89 57
25 79
38 83
42 87
46 91
50 95
Planned Shipments - Receipt Date 86
86 86
86 86
86
Planned Shipments - Ship Date 86
86 86
86 86
86
Past Due
Week 40
41 42
43 44
45 46
47 48
49 50
51 52
Demands Forecast
34 34
34 34
34 43
43 43
43 44
44 44
44
In Transit Projected on Hand
95 61
27 79
45 97
54 97
54 97
53 95
51 93
Planned Shipments - Receipt Date 86
86 86
86 86
86
Planned Shipments - Ship Date
86 86
86 86
86 86
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Langkah-langkah pengisian distribution requirement planning sheet untuk distribution center
Stabat adalah: 1. On Hand Balance = 18 unit Status persediaan awal distribution center
Stabat, diperoleh dari Tabel 5.3. 2. Lead Time = 4 hours
≈ 110 week Lead Time pendistribusian produk dari PT. Pancakarsa Bangun Reksa ke distribution centerStabat, diperoleh dari Tabel
5.2. 3. OrderQuantity = 69 unit diperoleh dari Tabel 5.14.
4. Safety Stock = 8 unit diperoleh dari Tabel 5.16. 5. Projected on Hand Past Due = 18 unit diperoleh dari On Hand Balance
6. Demands Forecast 1
s t
Week = 22 unit diperoleh dari Tabel 5.17.
7. In Transit 1
st
Week = 0, tidak adanya produk yang sedang dalam proses
pengiriman 8. Planned Shipments - Ship Date = 69 unit diperoleh dari Order Quantity
9. Planned Shipments - Receipt Date = 69 unit diperoleh dari Order Quantity 10. Projected on Hand 1
st
Week = Projected on Hand Past Due + Order
Quantity – Demands Forecast 1
st
Week = 18 + 69 – 22 = 65 unit
11. Demands Forecast 2
nd
Week = 29 unit diperoleh dari Tabel 5.17.
12. Projected on Hand 2
nd
Week = Projected on Hand 1
st
Week – Demands Forecast 2
nd
Week = 65 – 22 = 43 unit
13. Demands Forecast 3
rd
Week = 22 unit diperoleh dari Tabel 5.17.
14. Projected on Hand 3
rd
Week = Projected on Hand 2
nd
Week – Demands Forecast 3
rd
Week = 43 – 22 = 21 unit
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15. Dilakukan hal yang sama hingga minggu ke 52 sehingga distribution requirement planning sheet
untuk distribution center Stabat terisi keseluruhan.
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Tabel 5.19. Distribution Requirement Planning Sheet untuk DistributionCenter Stabat
Distribution Requirement Planning Sheet untuk DistributionCenter Stabat
On Hand Balance : 18
Lead Time : 4 hours
≈ 110 week Safety Stock
: 8
Order Quantity : 69
Distribution Center : Stabat
Past Due
Week 1
2 3
4 5
6 7
8 9
10 11
12 13
Demands Forecast
22 22
22 22
22 28
28 28
28 28
28 28
28
In Transit Projected on Hand
18 65
43 21
68 46
18 59
31 72
44 16
57 29
Planned Shipments - Receipt Date 69
69 69
69 69
Planned Shipments - Ship Date 69
69 69
69 69
Past Due
Week 14
15 16
17 18
19 20
21 22
23 24
25 26
Demands Forecast
23 23
23 23
23 29
29 29
29 29
29 29
29
In Transit Projected on Hand
29 75
52 29
75 52
23 63
34 74
45 16
56 27
Planned Shipments - Receipt Date 69
69 69
69 69
Planned Shipments - Ship Date
69 69
69 69
69
Past Due
Week 27
28 29
30 31
32 33
34 35
36 37
38 39
Demands Forecast
24 24
24 24
24 30
30 30
30 30
30 30
30
In Transit Projected on Hand
27 72
48 24
69 45
15 54
24 63
33 72
42 12
Planned Shipments - Receipt Date
69 69
69 69
69
Planned Shipments - Ship Date
69 69
69 69
69
Past Due
Week 40
41 42
43 44
45 46
47 48
49 50
51 52
Demands Forecast 24
24 24
24 24
31 31
31 31
31 31
31 31
In Transit Projected on Hand
12 57
33 9
54 30
68 37
75 44
13 51
20 58
Planned Shipments - Receipt Date
69 69
69 69
69 69
Planned Shipments - Ship Date
69 69
69 69
69 69
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Langkah-langkah pengisian distribution requirement planning sheet untuk distribution center
Pekanbaru adalah: 1. On Hand Balance = 35 unit Status persediaan awal distribution center
Pekanbaru, diperoleh dari Tabel 5.3. 2. Lead Time = 30 hours
≈ 310 week Lead Time pendistribusian produk dari PT. Pancakarsa Bangun Reksa ke distribution centerPekanbaru, diperoleh
dari Tabel 5.2. 3. OrderQuantity = 111 unit diperoleh dari Tabel 5.14.
4. Safety Stock = 8 unit diperoleh dari Tabel 5.16. 5. Projected on Hand Past Due = 35 unit diperoleh dari On Hand Balance
6. Demands Forecast 1
s t
Week = 44 unit diperoleh dari Tabel 5.17.
7. In Transit 1
st
Week = 0, tidak adanya produk yang sedang dalam proses
pengiriman 8. Planned Shipments - Ship Date = 111 unit diperoleh dari Order Quantity
9. Planned Shipments - Receipt Date = 111 unit diperoleh dari Order Quantity 10. Projected on Hand 1
st
Week = Projected on Hand Past Due + Order
Quantity – Demands Forecast 1
st
Week = 35 + 111 – 44 = 102 unit
11. Demands Forecast 2
nd
Week = 44 unit diperoleh dari Tabel 5.17.
12. Projected on Hand 2
nd
Week = Projected on Hand 1
st
Week – Demands Forecast 2
nd
Week = 102 – 44 = 58 unit
13. Demands Forecast 3
rd
Week = 44 unit diperoleh dari Tabel 5.17.
14. Projected on Hand 3
rd
Week = Projected on Hand 2
nd
Week – Demands Forecast 3
rd
Week = 58 – 44 = 14 unit
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15. Dilakukan hal yang sama hingga minggu ke 52 sehingga distribution requirement planning sheet
untuk distribution center Pekanbaru terisi keseluruhan.
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Tabel 5.20. Distribution Requirement Planning Sheet untuk DistributionCenter Pekanbau
Distribution Requirement Planning Sheet untuk DistributionCenter Pekanbaru
On Hand Balance : 35
Lead Time :30 hours
≈ 310 week Safety Stock
: 8 Order Quantity
: 111 Distribution Center
: Pekanbaru
Past Due
Week 1
2 3
4 5
6 7
8 9
10 11
12 13
Demands Forecast 44
44 44
44 44
55 55
55 55
55 55
55 55
In Transit Projected on Hand
35 102
58 14
81 37
93 38
94 39
95 40
96 41
Planned Shipments - Receipt Date
111 111
111 111
111 111
Planned Shipments - Ship Date
111 111
111 111
111 111
Past Due
Week 14
15 16
17 18
19 20
21 22
23 24
25 26
Demands Forecast 45
45 45
45 45
56 56
56 56
56 56
56 56
In Transit Projected on Hand
41 107
62 17
83 38
93 37
92 36
91 35
90 34
Planned Shipments - Receipt Date
111 111
111 111
111 111
Planned Shipments - Ship Date
111 111
111 111
111 111
Past Due
Week 27
28 29
30 31
32 33
34 35
36 37
38 39
Demands Forecast
45 45
45 45
45 57
57 57
57 57
57 57
57
In Transit Projected on Hand
34 100
55 10
76 31
85 28
82 25
79 22
76 19
Planned Shipments - Receipt Date
111 111
111 111
111 111
Planned Shipments - Ship Date 111
111 111
111 111
111
Past Due
Week 40
41 42
43 44
45 46
47 48
49 50
51 52
Demands Forecast
46 46
46 46
46 58
58 58
58 58
58 58
58
In Transit Projected on Hand
19 84
38 103
57 11
64 117
59 112
54 107
49 102
Planned Shipments - Receipt Date 111
111 111
111 111
111 111
Planned Shipments - Ship Date 111
111 111
111 111
111 111
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Langkah-langkah pengisian distribution requirement planning sheet untuk distribution center
Palembang adalah: 1. On Hand Balance = 27 unit Status persediaan awal distribution center
Palembang, diperoleh dari Tabel 5.3. 2. Lead Time = 60 hours
≈ 610 week Lead Time pendistribusian produk dari PT. Pancakarsa Bangun Reksa ke distribution centerPalembang, diperoleh
dari Tabel 5.2. 3. OrderQuantity = 95 unit diperoleh dari Tabel 5.14.
4. Safety Stock = 22 unit diperoleh dari Tabel 5.16. 5. Projected on Hand Past Due = 27 unit diperoleh dari On Hand Balance
6. Demands Forecast 1
s t
Week = 36 unit diperoleh dari Tabel 5.17.
7. In Transit 1
st
Week = 0, tidak adanya produk yang sedang dalam proses
pengiriman 8. Planned Shipments - Ship Date = 95 unit diperoleh dari Order Quantity
9. Planned Shipments - Receipt Date = 95 unit diperoleh dari Order Quantity 10. Projected on Hand 1
st
Week = Projected on Hand Past Due + Order
Quantity – Demands Forecast 1
st
Week = 27 + 95 – 36 = 86 unit
11. Demands Forecast 2
nd
Week = 36 unit diperoleh dari Tabel 5.17.
12. Projected on Hand 2
nd
Week = Projected on Hand 1
st
Week – Demands Forecast 2
nd
Week = 86 – 36 = 50 unit
13. Dilakukan hal yang sama hingga minggu ke 52 sehingga distribution requirement planning sheet
untuk distribution center Stabat terisi keseluruhan.
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Tabel 5.21. Distribution Requirement Planning Sheet untuk DistributionCenter Palembang
Distribution Requirement Planning Sheet untuk DistributionCenter Pekanbaru
On Hand Balance : 27
Lead Time : 60 hours
≈ 35 week Safety Stock
: 22 Order Quantity
: 95 Distribution Center
: Palembang
Past Due
Week 1
2 3
4 5
6 7
8 9
10 11
12 13
Demands Forecast 36
36 36
36 36
43 43
43 43
42 42
42 42
In Transit Projected on Hand
27 86
50 109
73 37
89 46
98 55
108 66
24 77
Planned Shipments - Receipt Date
95 95
95 95
95 95
Planned Shipments - Ship Date
95 95
95 95
95 95
Past Due
Week 14
15 16
17 18
19 20
21 22
23 24
25 26
Demands Forecast 33
33 33
33 33
41 41
41 41
40 40
40 40
In Transit Projected on Hand
77 44
106 73
40 102
61 115
74 33
88 48
103 63
Planned Shipments - Receipt Date
95 95
95 95
95
Planned Shipments - Ship Date
95 95
95 95
95
Past Due
Week 27
28 29
30 31
32 33
34 35
36 37
38 39
Demands Forecast
31 31
31 31
31 38
38 38
38 37
37 37
37
In Transit Projected on Hand
63 32
96 65
34 98
60 22
79 41
99 62
25 83
Planned Shipments - Receipt Date
95 95
95 95
95
Planned Shipments - Ship Date 95
95 95
95 95
Past Due
Week 40
41 42
43 44
45 46
47 48
49 50
51 52
Demands Forecast
29 29
29 29
29 35
35 35
35 34
34 34
34
In Transit Projected on Hand
83 54
25 91
62 33
93 58
23 83
49 110
76 42
Planned Shipments - Receipt Date 95
95 95
95
Planned Shipments - Ship Date 95
95 95
95
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No. Dok.:FM-GKM-TI-TS-01-06A; Tgl. Efektif : 02Juli 2012; Rev : 0; Halaman : 1 dari 1
Pada Tabel 5.18 sampai dengan Tabel 5.21.dapat dilihat DRP worksheet pada empat distribution center, yaitu Langsa, Stabat, Pekanbaru, dan Palembang.
Pada DRP worksheet terlihat perencanaan pengiriman produk, penerimaan produk, jumlah produk yang tersedia di distribution center, dan jumlah
permintaan produk pada masing-masing distribution center berdasarkan peramalan.Perencanaan pada DRP worksheet dilakukan untuk 12 bulan kedepan
yang dibagi kedalam 52 minggu. DRP worksheet
mengacu pada jumlah permintaan di awal periode, safety stock, lead time,
serta order quantity. Order quantity merupakan jumlah pengiriman produk yang optimal pada setiap pemesanan dan safety stock
merupakan titik acuan pemesanan kembali produk.
5.2.7. Pegging Information
