PENGUMPULAN DAN PENGOLAHAN DATA
5.2.6. 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.
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 stockroom pada distribution centre.
4. Order quantity adalah jumlah produk yang dikirimkan ke untuk setiap kali pemesanan
5. Demands forecast adalah peramalan 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.
Distribution Resources Planning Worksheet untuk setiap distribution centre dapat dilihat pada tabel 5.17 sampai tabel 5.23.
Langkah-langkah pengisian Distribution Resources Planning Sheet untuk
Dsitribution Centre Binjai adalah :
1. On hand balance = 86 unit (diperoleh dari tabel 5.3) 2. Lead time = 1 jam (diperoleh dari tabel 5.2)
3. Order quantity = 3.500 unit (diperoleh dari tabel 5.13) 4. Safety stock = 20 unit (diperoleh dari tabel 5.15)
5. Projected on Hand (Past Due) = 86 unit (diperoleh dari On hand Balance) 6. Demands forecast (1st Week) = 642 unit (diperoleh dari tabel 5.16)
7. In transit (1st Week) = 0 unit
8. Planned shipments – Ship Date = 3.500 unit (diperoleh dari Order Quantity) 9. Planned shipments – Receipt Date = 3.500 unit (diperoleh dari Order
Quantity)
10. Projected on hand (1st Week) = Projected on Hand (Past Due) + Order quantity - Demands forecast (1st Week) = 86 + 3.500 – 642 = 2.944 unit
11. Demands forecast (2ndWeek) = 642 unit (diperoleh dari tabel 5.16)
12. Projected on hand (2nd Week) = Projected on hand (1st Week) - Demands forecast (2ndWeek) = 2.944 – 642 = 2.301 unit
13. Demand forecast (3rdWeek) = 642 unit (diperoleh dari tabel 5.16)
14. Projected on hand (3rd Week) = Projected on hand (2nd Week) - Demand forecast (3rdWeek) = 2.301 – 642 = 1.660 unit
15. Dilakukan hal yang sama dengan proses yang sama untuk 52 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara keseluruhan.
Distribution Resources Planning Worksheet Binjai
On Hand Balance : 86 Lead Time : 1 hour = 0 week
Safety Stock : 20 Order Quantity : 3.500 unit
Distribution Centre : Binjai
Past Due Week
1 2 3 4 5 6 7 8 9 10 11 12 13
Demand Forecast 642 642 642 642 640 640 640 640 510 510 510 510 510
In Transit
Projected on Hand 86 2.944 2.302 1.660 1.018 378 3.238 2.598 1.958 1.448 938 428 3.418 2.908
Planned Shipment-Receipt Date 3.500 3.500 3.500
Planed Shipments - Ship Date 3.500 3.500 3.500
Past Due Week
14 15 16 17 18 19 20 21 22 23 24 25 26
Demand Forecast 636 636 636 636 635 635 635 635 508 508 508 508 508
In Transit
Projected on Hand 2.908 2.272 1.636 1.000 364 3.229 2.594 1.959 1.324 816 308 3.300 2.792 2.284
Planned Shipment-Receipt Date 3.500 3.500
Planed Shipments - Ship Date 3.500 3.500
Past Due Week
27 28 29 30 31 32 33 34 35 36 37 38 39
Demand Forecast 635 635 635 635 637 637 637 637 512 512 512 512 512
In Transit
Projected on Hand 2.284 1.649 1.014 379 3.244 2.607 1.970 1.333 696 184 3.172 2.660 2.148 1.636
Planned Shipment-Receipt Date 3.500 3.500
Planed Shipments - Ship Date 3.500 3.500
Past Due Week
40 41 42 43 44 45 46 47 48 49 50 51 52
Demand Forecast 641 641 641 641 642 642 642 642 514 514 514 514 514
In Transit
Projected on Hand 1.636 995 354 3.213 2.572 1.930 1.288 646 3.504 2.990 2.476 1.962 1.448 934
Planned Shipment-Receipt Date 3.500 3.500
Langkah-langkah pengisian Distribution Resources Planning Sheet untuk
Dsitribution Centre Padang adalah :
1. On hand balance = 164 unit (diperoleh dari tabel 5.3) 2. Lead time = 34 jam (diperoleh dari tabel 5.2)
3. Order quantity = 15.604 unit (diperoleh dari tabel 5.13) 4. Safety stock = 820 unit (diperoleh dari tabel 5.15)
5. Projected on Hand (Past Due) = 164 unit (diperoleh dari On hand Balance) 6. Demands forecast (1st Week) = 3.073 unit (diperoleh dari tabel 5.16)
7. In transit (1st Week) = 0 unit
8. Planned shipments – Ship Date = 15.604 unit (diperoleh dari Order Quantity) 9. Planned shipments – Receipt Date = 15.604 unit (diperoleh dari Order
Quantity)
10. Projected on hand (1st Week) = Projected on Hand (Past Due) + Order quantity - Demands forecast (1st Week) = 164 + 15.604 – 3.073 = 12.695 unit 11. Demands forecast (2ndWeek) = 3.073 unit (diperoleh dari tabel 5.16)
12. Projected on hand (2nd Week) = Projected on hand (1st Week) - Demands forecast (2ndWeek) = 12.695 – 3.073 = 9.622 unit
13. Demand forecast (3rdWeek) = 3.073 unit (diperoleh dari tabel 5.16)
14. Projected on hand (3rd Week) = Projected on hand (2nd Week) - Demand forecast (3rdWeek) = 9.622 – 3.073 = 6.549 unit
15. Dilakukan hal yang sama dengan proses yang sama untuk 52 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara keseluruhan.
Tabel 5.18. Distribution Resources Planning Worksheet untuk Distribution Centre Padang Distribution Resources Planning Worksheet Padang
On Hand Balance : 164 Lead Time : 34 hour = 0 week
Safety Stock : 820 Order Quantity : 15.604 unit
Distribution Centre : Padang
Past Due Week
1 2 3 4 5 6 7 8 9 10 11 12 13
Demand Forecast 3.073 3.073 3.073 3.073 3.113 3.113 3.113 3.113 2.522 2.522 2.522 2.522 2.522
In Transit
Projected on Hand 164 12.695 9.622 6.549 3.476 15.967 12.854 9.741 6.628 4.106 1.584 14.666 12.144 9.622
Planned Shipment-Receipt Date 15.604 15.604 15.604
Planed Shipments - Ship Date 15.604 15.604 15.604
Past Due Week
14 15 16 17 18 19 20 21 22 23 24 25 26
Demand Forecast 3.191 3.191 3.191 3.191 3.227 3.227 3.227 3.227 2.610 2.610 2.610 2.610 2.610
In Transit
Projected on Hand 9.622 6.431 3.240 15.653 12.462 9.235 6.008 2.781 15.158 12.548 9.938 7.328 4.718 2.108
Planned Shipment-Receipt Date 15.604 15.604
Planed Shipments - Ship Date 15.604 15.604
Past Due Week
27 28 29 30 31 32 33 34 35 36 37 38 39
Demand Forecast 3.297 3.297 3.297 3.297 3.331 3.331 3.331 3.331 2.690 2.690 2.690 2.690 2.690
In Transit
Projected on Hand 2.108 14.415 11.118 7.821 4.524 1.193 13.466 10.135 6.804 4.114 1.424 14.338 11.648 8.958
Planned Shipment-Receipt Date 15.604 15.604 15.604
Planed Shipments - Ship Date 15.604 15.604 15.604
Past Due Week
40 41 42 43 44 45 46 47 48 49 50 51 52
Demand Forecast 3.393 3.393 3.393 3.393 3.423 3.423 3.423 3.423 2.761 2.761 2.761 2.761 2.761
In Transit
Projected on Hand 8.958 5.565 2.172 14.383 10.990 7.567 4.144 16.325 12.902 10.141 7.380 4.619 1.858 14.701
Planned Shipment-Receipt Date 15.604 15.604 15.604
Langkah-langkah pengisian Distribution Resources Planning Sheet untuk
Dsitribution Centre Sibolga adalah :
1. On hand balance = 122 unit (diperoleh dari tabel 5.3) 2. Lead time = 10 jam (diperoleh dari tabel 5.2)
3. Order quantity = 7.314 unit (diperoleh dari tabel 5.13) 4. Safety stock = 323 unit (diperoleh dari tabel 5.15)
5. Projected on Hand (Past Due) = 122 unit (diperoleh dari On hand Balance) 6. Demands forecast (1st Week) = 1.542 unit (diperoleh dari tabel 5.16)
7. In transit (1st Week) = 0 unit
8. Planned shipments – Ship Date = 7.314 unit (diperoleh dari Order Quantity) 9. Planned shipments – Receipt Date = 7.314 unit (diperoleh dari Order
Quantity)
10. Projected on hand (1st Week) = Projected on Hand (Past Due) + Order quantity - Demands forecast (1st Week) = 122 + 7.314 – 1.542 = 5.894 unit 11. Demands forecast (2ndWeek) = 1.542 unit (diperoleh dari tabel 5.16)
12. Projected on hand (2nd Week) = Projected on hand (1st Week) - Demands forecast (2ndWeek) = 5.894 – 1.542 = 4.352 unit
13. Demand forecast (3rdWeek) = 1.542 unit (diperoleh dari tabel 5.16)
14. Projected on hand (3rd Week) = Projected on hand (2nd Week) - Demand forecast (3rdWeek) = 4.352 – 1.542 = 2.810 unit
15. Dilakukan hal yang sama dengan proses yang sama untuk 52 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara keseluruhan.
Tabel 5.19. Distribution Resources Planning Worksheet untuk Distribution Centre Sibolga Distribution Resources Planning Worksheet Sibolga
On Hand Balance : 122 Lead Time : 10 hour = 0 week
Safety Stock : 323 Order Quantity : 7.314 unit
Distribution Centre : Sibolga
Past Due Week
1 2 3 4 5 6 7 8 9 10 11 12 13
Demand Forecast 1.542 1.542 1.542 1.542 1.538 1.538 1.538 1.538 1.226 1.226 1.226 1.226 1.226
In Transit
Projected on Hand 122 5.894 4.352 2.810 1.268 7.044 5.506 3.968 2.430 1.204 7.292 6.066 4.840 3.614
Planned Shipment-Receipt Date 7.314 7.314 7.314
Planed Shipments - Ship Date 7.314 7.314 7.314
Past Due Week
14 15 16 17 18 19 20 21 22 23 24 25 26
Demand Forecast 1.525 1.525 1.525 1.525 1.516 1.516 1.516 1.516 1.203 1.203 1.203 1.203 1.203
In Transit
Projected on Hand 3.614 2.089 564 6.353 4.828 3.312 1.796 7.594 6.078 4.875 3.672 2.469 1.266 7.377
Planned Shipment-Receipt Date 7.314 7.314 7.314
Planed Shipments - Ship Date 7.314 7.314 7.314
Past Due Week
27 28 29 30 31 32 33 34 35 36 37 38 39
Demand Forecast 1.491 1.491 1.491 1.491 1.476 1.476 1.476 1.476 1.167 1.167 1.167 1.167 1.167
In Transit
Projected on Hand 7.377 5.886 4.395 2.904 1.413 7.251 5.775 4.299 2.823 1.656 489 6.636 5.469 4.302
Planned Shipment-Receipt Date 7.314 7.314
Planed Shipments - Ship Date 7.314 7.314
Past Due Week
40 41 42 43 44 45 46 47 48 49 50 51 52
Demand Forecast 1.440 1.440 1.440 1.440 1.419 1.419 1.419 1.419 1.117 1.117 1.117 1.117 1.117
In Transit
Projected on Hand 4.302 2.862 1.422 7.296 5.856 4.437 3.018 1.599 7.494 6.377 5.260 4.143 3.026 1.909
Planned Shipment-Receipt Date 7.314 7.314
Langkah-langkah pengisian Distribution Resources Planning Sheet untuk
Dsitribution Centre Medan adalah :
1. On hand balance = 60 unit (diperoleh dari tabel 5.3) 2. Lead time = 1 jam (diperoleh dari tabel 5.2)
3. Order quantity = 9.784 unit (diperoleh dari tabel 5.13) 4. Safety stock = 52 unit (diperoleh dari tabel 5.15)
5. Projected on Hand (Past Due) = 60 unit (diperoleh dari On hand Balance) 6. Demands forecast (1st Week) = 3.507 unit (diperoleh dari tabel 5.16) 7. In transit (1st Week) = 0 unit
8. Planned shipments – Ship Date = 9.784 unit (diperoleh dari Order Quantity) 9. Planned shipments – Receipt Date = 9.784 unit (diperoleh dari Order
Quantity)
10. Projected on hand (1st Week) = Projected on Hand (Past Due) + Order quantity - Demands forecast (1st Week) = 60 + 9.784 – 3.507 = 6.337 unit 11. Demands forecast (2ndWeek) = 3.507 unit (diperoleh dari tabel 5.16)
12. Projected on hand (2nd Week) = Projected on hand (1st Week) - Demands forecast (2ndWeek) = 6.337 – 3.507 = 2.830 unit
13. Demand forecast (3rdWeek) = 3.507 unit (diperoleh dari tabel 5.16) 14. In transit (3rd Week) = 0 unit
15. Planned shipments – Ship Date = 9.784 unit (diperoleh dari Order Quantity) 16. Planned shipments – Receipt Date = 9.784 unit (diperoleh dari Order
17. Projected on hand (3rd Week) = Projected on hand (2nd Week) + Order Quantity - Demand forecast (3rdWeek) = 2.830 + 9.784 – 3.507 = 9.107 unit 18. Dilakukan hal yang sama dengan proses yang sama untuk 52 minggu ke
depan sehingga Distribution Resources Planning Worksheet terisi secara keseluruhan.
Tabel 5.20. Distribution Resources Planning Worksheet untuk Distribution Centre Medan Distribution Resources Planning Worksheet Medan
On Hand Balance : 60 Lead Time : 1 hour = 0 week
Safety Stock : 52 Order Quantity : 9.784 unit
Distribution Centre : Medan
Past Due Week
1 2 3 4 5 6 7 8 9 10 11 12 13
Demand Forecast 3.507 3.507 3.507 3.507 3.510 3.510 3.510 3.510 2.810 2.810 2.810 2.810 2.810
In Transit
Projected on Hand 60 6.337 2.830 9.107 5.600 2.090 8.364 4.854 1.344 8.318 5.508 2.698 9.672 6.862
Planned Shipment-Receipt Date 9.784 9.784 9.784 9.784 9.784
Planed Shipments - Ship Date 9.784 9.784 9.784 9.784 9.784
Past Due Week
14 15 16 17 18 19 20 21 22 23 24 25 26
Demand Forecast 3.515 3.515 3.515 3.515 3.518 3.518 3.518 3.518 2.816 2.816 2.816 2.816 2.816
In Transit
Projected on Hand 6.862 3.347 9.616 6.101 2.586 8.852 5.334 1.816 8.082 5.266 2.450 9.418 6.602 3.786
Planned Shipment-Receipt Date 9.784 9.784 9.784 9.784
Planed Shipments - Ship Date 9.784 9.784 9.784 9.784
Past Due Week
27 28 29 30 31 32 33 34 35 36 37 38 39
Demand Forecast 3.522 3.522 3.522 3.522 3.524 3.524 3.524 3.524 2.821 2.821 2.821 2.821 2.821
In Transit
Projected on Hand 3.786 264 6.526 3.004 9.266 5.742 2.218 8.478 4.954 2.133 9.096 6.275 3.454 633
Planned Shipment-Receipt Date 9.784 9.784 9.784 9.784
Planed Shipments - Ship Date 9.784 9.784 9.784 9.784
Past Due Week
40 41 42 43 44 45 46 47 48 49 50 51 52
Demand Forecast 3.527 3.527 3.527 3.527 3.529 3.529 3.529 3.529 2.824 2.824 2.824 2.824 2.824
In Transit
Projected on Hand 633 6.890 3.363 9.620 6.093 2.564 8.819 5.290 1.761 8.721 5.897 3.073 249 7.209
Planned Shipment-Receipt Date 9.784 9.784 9.784 9.784 9.784
Langkah-langkah pengisian Distribution Resources Planning Sheet untuk
Dsitribution Centre Tebing Tinggi adalah :
1. On hand balance = 65 unit (diperoleh dari tabel 5.3) 2. Lead time = 2 jam (diperoleh dari tabel 5.2)
3. Order quantity = 2.285 unit (diperoleh dari tabel 5.13) 4. Safety stock = 127 unit (diperoleh dari tabel 5.15)
5. Projected on Hand (Past Due) = 65 unit (diperoleh dari On hand Balance) 6. Demands forecast (1st Week) = 309 unit (diperoleh dari tabel 5.16)
7. In transit (1st Week) = 0 unit
8. Planned shipments – Ship Date = 2.285 unit (diperoleh dari Order Quantity) 9. Planned shipments – Receipt Date = 2.285 unit (diperoleh dari Order
Quantity)
10. Projected on hand (1st Week) = Projected on Hand (Past Due) + Order quantity - Demands forecast (1st Week) = 65 + 2.285 – 309 = 2.041 unit
11. Demands forecast (2ndWeek) = 309 unit (diperoleh dari tabel 5.16)
12. Projected on hand (2nd Week) = Projected on hand (1st Week) - Demands forecast (2ndWeek) = 2.041 – 309 = 1.732 unit
13. Demand forecast (3rdWeek) = 309 unit (diperoleh dari tabel 5.16)
14. Projected on hand (3rd Week) = Projected on hand (2nd Week) - Demand forecast (3rdWeek) = 1.732 – 309 = 1.423 unit
15. Dilakukan hal yang sama dengan proses yang sama untuk 52 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara keseluruhan.
Tabel 5.21. Distribution Resources Planning Worksheet untuk Distribution Centre Tebing Tinggi Distribution Resources Planning Worksheet Tebing Tinggi
On Hand Balance : 65 Lead Time : 2 hour = 0 week
Safety Stock : 127 Order Quantity : 2.285 unit
Distribution Centre :Tebing Tinggi
Past Due Week
1 2 3 4 5 6 7 8 9 10 11 12 13
Demand Forecast 309 309 309 309 306 306 306 306 242 242 242 242 242
In Transit
Projected on Hand 65 2.041 1.732 1.423 1.114 808 502 196 2.175 1.933 1.691 1.449 1.207 965
Planned Shipment-Receipt Date 2.285 2.285
Planed Shipments - Ship Date 2.285 2.285
Past Due Week
14 15 16 17 18 19 20 21 22 23 24 25 26
Demand Forecast 299 299 299 299 295 295 295 295 232 232 232 232 232
In Transit
Projected on Hand 965 666 367 2.353 2.054 1.759 1.464 1.169 874 642 410 178 2.231 1.999
Planned Shipment-Receipt Date 2.285 2.285
Planed Shipments - Ship Date 2.285 2.285
Past Due Week
27 28 29 30 31 32 33 34 35 36 37 38 39
Demand Forecast 285 285 285 285 279 279 279 279 218 218 218 218 218
In Transit
Projected on Hand 1.999 1.714 1.429 1.144 859 580 301 2.307 2.028 1.810 1.592 1.374 1.156 938
Planned Shipment-Receipt Date 2.285
Planed Shipments - Ship Date 2.285
Past Due Week
40 41 42 43 44 45 46 47 48 49 50 51 52
Demand Forecast 266 266 266 266 259 259 259 259 201 201 201 201 201
In Transit
Projected on Hand 938 672 406 140 2.159 1.900 1.641 1.382 1.123 922 721 520 319 2.403
Planned Shipment-Receipt Date 2.285 2.285
Langkah-langkah pengisian Distribution Resources Planning Sheet untuk
Dsitribution Centre Siantar adalah :
1. On hand balance = 78 unit (diperoleh dari tabel 5.3) 2. Lead time = 3 jam (diperoleh dari tabel 5.2)
3. Order quantity = 2.393 unit (diperoleh dari tabel 5.13) 4. Safety stock = 50 unit (diperoleh dari tabel 5.15)
5. Projected on Hand (Past Due) = 78 unit (diperoleh dari On hand Balance) 6. Demands forecast (1st Week) = 286 unit (diperoleh dari tabel 5.16)
7. In transit (1st Week) = 0 unit
8. Planned shipments – Ship Date = 2.393 unit (diperoleh dari Order Quantity) 9. Planned shipments – Receipt Date = 2.393 unit (diperoleh dari Order
Quantity)
10. Projected on hand (1st Week) = Projected on Hand (Past Due) + Order quantity - Demands forecast (1st Week) = 78 + 2.393 – 286 = 2.185 unit
11. Demands forecast (2ndWeek) = 286 unit (diperoleh dari tabel 5.16)
12. Projected on hand (2nd Week) = Projected on hand (1st Week) - Demands forecast (2ndWeek) = 2.185 – 286 = 1.899 unit
13. Demand forecast (3rdWeek) = 286 unit (diperoleh dari tabel 5.16)
14. Projected on hand (3rd Week) = Projected on hand (2nd Week) - Demand forecast (3rdWeek) = 1.899 – 286 = 1.613 unit
15. Dilakukan hal yang sama dengan proses yang sama untuk 52 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara keseluruhan.
Tabel 5.22. Distribution Resources Planning Worksheet untuk Distribution Centre Siantar Distribution Resources Planning Worksheet Siantar
On Hand Balance : 78 Lead Time : 3 hour = 0 week
Safety Stock : 50 Order Quantity : 2.393 unit
Distribution Centre : Siantar
Past Due Week
1 2 3 4 5 6 7 8 9 10 11 12 13
Demand Forecast 286 286 286 286 283 283 283 283 223 223 223 223 223
In Transit
Projected on Hand 78 2.185 1.899 1.613 1.327 1.044 761 478 195 2.365 2.142 1.919 1.696 1.473
Planned Shipment-Receipt Date 2.393 2.393
Planed Shipments - Ship Date 2.393 2.393
Past Due Week
14 15 16 17 18 19 20 21 22 23 24 25 26
Demand Forecast 273 273 273 273 268 268 268 268 213 213 213 213 213
In Transit
Projected on Hand 1.473 1.200 927 654 381 113 2.238 1.970 1.702 1.489 1.276 1.063 850 637
Planned Shipment-Receipt Date 2.393
Planed Shipments - Ship Date 2.393
Past Due Week
27 28 29 30 31 32 33 34 35 36 37 38 39
Demand Forecast 266 266 266 266 269 269 269 269 219 219 219 219 219
In Transit
Projected on Hand 637 371 105 2.232 1.966 1.697 1.428 1.159 890 671 452 233 2.407 2.188
Planned Shipment-Receipt Date 2.393 2.393
Planed Shipments - Ship Date 2.393 2.393
Past Due Week
40 41 42 43 44 45 46 47 48 49 50 51 52
Demand Forecast 279 279 279 279 283 283 283 283 229 229 229 229 229
In Transit
Projected on Hand 2.188 1.909 1.630 1.351 1.072 789 506 223 2.333 2.104 1.875 1.646 1.417 1.188
Planned Shipment-Receipt Date 2.393
Langkah-langkah pengisian Distribution Resources Planning Sheet untuk
Dsitribution Centre Pekan Baru adalah :
1. On hand balance = 25 unit (diperoleh dari tabel 5.3) 2. Lead time = 32 jam (diperoleh dari tabel 5.2)
3. Order quantity = 9.900 unit (diperoleh dari tabel 5.13) 4. Safety stock = 54 unit (diperoleh dari tabel 5.15)
5. Projected on Hand (Past Due) = 25 unit (diperoleh dari On hand Balance) 6. Demands forecast (1st Week) = 1.572 unit (diperoleh dari tabel 5.16) 7. In transit (1st Week) = 0 unit
8. Planned shipments – Ship Date = 9.900 unit (diperoleh dari Order Quantity) 9. Planned shipments – Receipt Date = 9.900 unit (diperoleh dari Order
Quantity)
10. Projected on hand (1st Week) = Projected on Hand (Past Due) + Order quantity - Demands forecast (1st Week) = 25 + 9.900 – 1.572 = 8.353 unit 11. Demands forecast (2ndWeek) = 1.572 unit (diperoleh dari tabel 5.16)
12. Projected on hand (2nd Week) = Projected on hand (1st Week) - Demands forecast (2ndWeek) = 8.353 – 1.572 = 6.781 unit
13. Demand forecast (3rdWeek) = 1.572 unit (diperoleh dari tabel 5.16)
14. Projected on hand (3rd Week) = Projected on hand (2nd Week) - Demand forecast (3rdWeek) = 6.781 – 1.572 = 5.209 unit
15. Dilakukan hal yang sama dengan proses yang sama untuk 52 minggu ke depan sehingga Distribution Resources Planning Worksheet terisi secara keseluruhan.
Tabel 5.23. Distribution Resources Planning Worksheet untuk Distribution Centre Pekan Baru Distribution Resources Planning Worksheet Pekan Baru
On Hand Balance : 25 Lead Time : 32 hour = 0 week
Safety Stock : 54 Order Quantity : 9.900 unit
Distribution Centre : Pekan Baru
Past Due Week
1 2 3 4 5 6 7 8 9 10 11 12 13
Demand Forecast 1.572 1.572 1.572 1.572 1.570 1.570 1.570 1.570 1.254 1.254 1.254 1.254 1.254
In Transit
Projected on Hand 25 8.353 6.781 5.209 3.637 2.067 497 8.827 7.257 6.003 4.749 3.495 2.241 987
Planned Shipment-Receipt Date 9.900 9.900
Planed Shipments - Ship Date 9.900 9.900
Past Due Week
14 15 16 17 18 19 20 21 22 23 24 25 26
Demand Forecast 1.565 1.565 1.565 1.565 1.563 1.563 1.563 1.563 1.249 1.249 1.249 1.249 1.249
In Transit
Projected on Hand 987 9.322 7.757 6.192 4.627 3.064 1.501 9.838 8.275 7.026 5.777 4.528 3.279 2.030
Planned Shipment-Receipt Date 9.900 9.900
Planed Shipments - Ship Date 9.900 9.900
Past Due Week
27 28 29 30 31 32 33 34 35 36 37 38 39
Demand Forecast 1.559 1.559 1.559 1.559 1.556 1.556 1.556 1.556 1.243 1.243 1.243 1.243 1.243
In Transit
Projected on Hand 2.030 471 8.812 7.253 5.694 4.138 2.582 1.026 9.370 8.127 6.884 5.641 4.398 3.155
Planned Shipment-Receipt Date 9.900 9.900
Planed Shipments - Ship Date 9.900 9.900
Past Due Week
40 41 42 43 44 45 46 47 48 49 50 51 52
Demand Forecast 1.552 1.552 1.552 1.552 1.550 1.550 1.550 1.550 1.238 1.238 1.238 1.238 1.238
In Transit
Projected on Hand 3.155 1.603 9.951 8.399 6.847 5.297 3.747 2.197 647 9.309 8.071 6.833 5.595 4.357
Planned Shipment-Receipt Date 9.900 9.900
I-1
Pada tabel 5.17 sampai tabel 5.23 dapat dilihat DRP worksheet pada setiap distribution centre dimana memperlihatkan sistem kegiatan perencanaan dan penjadwalan distribusi di distribution centre yang didasarkan pada peramalan.
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.