Rahmawati, Wilda Kurniyah (2010) Analisis Pemilihan Metode Pengendalian Persediaan Material Consumable Pesawat B737 Berdasarkan Klasifikasi Material (Studi Kasus di PT. GMF Aero Asia). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
PT. GMF AA bergerak dalam bidang Maintenance, Repair and overhaul. Unit TMP (Garuda Airline Material Service) yang berada di bawah unit TM (Trade and Asset Management) bertanggung jawab atas pengelolaan persediaan material yang ada di gudang khususnya untuk material consumable pesawat Garuda. Saat ini kondisi persediaan di gudang cukup tinggi dan bila hal tersebut terjadi terus-menerus akan menyebabkan overstock. Akan tetapi di sisi lain, terdapat beberapa material yang tidak memiliki persediaan di gudang. Terjadinya stockout ini dapat mengakibatkan terhambatnya kegiatan maintenance. Salah satu faktor yang mengakibatkan kedua hal tersebut yaitu manajemen persediaan yang belum memperhatikan pola pemakaian material.
Tiap material memiliki karakteristik yang berbeda. Dari keseluruhan material consumable yang ada, akan dilakukan pengelompokan material menjadi 3 kelas berdasarkan tingkat kekritisannya. Parameter yang dipertimbangkan dalam klasifikasi yaitu annual dollar usage, harga, dan lead time. Kemudian dilakukan perhitungan pengendalian persediaan material dengan menggunakan metode existing perusahaan (min-max level), metode (s, Q), dan metode (R, s, S). Dari hasil perhitungan lot sizing dengan ketiga metode tersebut akan dibuat Material Requirement Planning (MRP) untuk tiap metode. Output yang didapat dari MRP yaitu jumlah material yang akan dipesan, waktu pengadaan, total biaya pengadaan, dan Inventory Turn Over (ITO). Penelitian ini bertujuan untuk menganalisis metode pengendalian persediaan yang sesuai untuk tiap kelas material. Penentuan metode lot sizing didasarkan pada kemungkinan terjadinya stockout, ITO, dan total biaya pengadaan.
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PT. GMF AA specialized in Maintenance, Repair and overhaul. TMP Unit (Garuda Airline Material Service) responsible on maintaining available materials at warehouse, especially for Garuda’s airplane consumable material. Currently, there is a high level of inventory in the warehouse and if this situation keep happening, it could create overstock. On the other hand, there are some materials unavailable in the warehouse. Stock Out can delay maintenance activity. One of the factors that could cause those situations is lack of attention at material management.
Every material has different personal characteristic. From all the consumable material, there are 3 different critical groups. Parameters being used to classify it are annual dollar usage, price, and lead time. Afterwards, material control calculation is being applied. Currently, the company uses min-max level method, (s, Q) method, and (R, s, S) method. Material Requirement Planning (MRP) will be created from lot sizing calculation and those three methods. MRP’s outputs are the amount of material needed, lead time, total cost, and Inventory Turn Over (ITO). This research is intended to analyze suitable material management for every material class. Selecting lot sizing method based on probability of stockout, inventory turn over, and total cost.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSI 658.787 Rah a |
| Uncontrolled Keywords: | Material Classification, Inventory Control, min-max level, (s, Q) system, (R, s, S) system, Material Requirement Planning. |
| 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: | ansi aflacha |
| Date Deposited: | 10 Feb 2020 06:27 |
| Last Modified: | 10 Feb 2020 06:27 |
| URI: | http://repository.its.ac.id/id/eprint/74787 |
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