Tiara, Dinda (2015) Analisis Kebijakan Pengendalian Persediaan Berdasarkan Klasifikasi Pada Consumable Item (Studi Kasus: PLTU X). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
PLTU X merupakan pembangkit listrik tenaga uap dengan bahan bakar batu bara. PLTU X sendiri menyuplai kebutuhan listrik di Jawa Timur. Agar tetap bisa beroperasi dengan baik, mesin-mesin yang ada di PLTU X harus tetap dijaga sehingga mampu memenuhi kebutuhan listrik. Kegiatan maintenance erat kaitannya dengan ketersediaan barang MRO (maintenance, repair, operation) yang harus terjaga dalam jumlah tertentu agar kegiatan maintenance bisa berjalan dengan baik. Dengan adanya persediaan MRO, perusahaan juga perlu mengontrol jumlah barang yang disimpan untuk mengurangi biaya-biaya yang akan ditimbulkan. Barang persediaan yang berlebihan dapat mengakibatkan meningkatnya biaya penyimpanan dan resiko kerusakan dari barang persediaan tersebut. Namun kekurangan atau tidak tersedianya barang persediaan jika dibutuhkan akan menghambat proses produksi dan bisa berakibat fatal bagi perusahaan. Di PLTU X, terdapat 281 jenis material consumable yang tersedia di gudang sebagai persediaan MRO. Karena jenis persediaan yang sangat banyak maka perlu dilakukan analisis critical item dari persedian yang ada dengan menggunakan Ng Model. Peramalan juga dilakukan dengan metode simulasi Monte Carlo, metode Croston, SBA, dan LSA. Dalam penelitian ini digunakan model periodic review system (R,s,S) dan continuous system (s,Q). Sedangkan, hasil peramalan akan dipilih dari jumlah error terkecil yang digunakan untuk memperoleh kisaran jumlah pemesanan. Sehingga output yang akan didapatkan dari penelitian ini adalah penentuan jumlah pemesanan, safety stock, reorder point, serta total biaya persediaan. Dari hasil perhitungan terdapat 56 material pada kelas A, 84 marterial pada kelas B, dan 141 material pada kelas C. Sedangkan biaya yang bisa dihemat dengan menggunakan metode yang disarankan adalah sebesar 43.3%. ========== PLTU X is a steam power plant with coal fuel. It is supplying electricity demand in East Java. That can still operate properly, the machines must be maintained so as to meet the electricity needs. Maintenance activities closely related to the availability of goods MRO (maintenance, repair, operation) that must be maintained in a certain amount so that maintenance activities can be run well. MRO inventory makes the company should control the amount of goods stored, thereby reducing the costs that would be incurred. Excessive inventory items can result in increased storage costs and the risk of damage to the supply of goods. However, a shortage or unavailability of supplies if needed will hamper the production process and can be fatal for the company. There are 281 types of consumable material available in the warehouse as MRO inventory. Because this type of inventory is very large, critical analysis is needed of the supply of existing items using Model Ng. Forecasting also performed with Monte Carlo simulation method, method of Croston, SBA, and LSA. This study used a model periodic review system (R, s, S) and continuous system (s, Q). Meanwhile, forecasting results will be chosen from the smallest amount of error that is used to obtain the range of the number of bookings. So that the output will be obtained from this study is the determination of the number of reservations, safety stock, reorder point, and the total cost of inventory. The results of the calculation are 56 material in class A, class B marterial 84, and 141 material at a grade of C. From the results of the calculation are 56 material in class A, class B marterial 84, and 141 material at a grade of C. While the cost of which could be in saving by using the suggested method is 43.3%.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSI 658.787 Tia a 3100015062634 |
| Uncontrolled Keywords: | klasifikasi material, Ng Model, simulasi Monte Carlo, metode Croston periodic review (R,s,S) dan continuous review (s,Q), material clasiffication, Ng Model, Monte Carlo simulation, Croston method, periodic review (R,s,S), continuous review (s,Q) |
| Subjects: | H Social Sciences > HD Industries. Land use. Labor > HD55 Inventory control |
| Divisions: | Faculty of Industrial Technology > Industrial Engineering > 26201-(S1) Undergraduate Thesis |
| Depositing User: | - Davi Wah |
| Date Deposited: | 18 Dec 2019 02:44 |
| Last Modified: | 18 Dec 2019 02:44 |
| URI: | https://repository.its.ac.id/id/eprint/72336 |
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