relation: http://repository.upi.edu/140240/
title: PENGENDALIAN PERSEDIAAN SPARE PART MENGGUNAKAN   KOMPARASI METODE SBA DAN MIN-MAX DI PT XYZ
creator: Amelia Lestari, -
creator: Amay Suherman, -
creator: Hanissa Okitasari, -
subject: L Education (General)
subject: T Technology (General)
description: Ketersediaan spare part berperan penting dalam menjaga kelancaran operasional mesin,   khususnya di industri kemasan fleksibel seperti PT XYZ. Perusahaan mengalami   keterlambatan pengadaan spare part impor karena pola permintaan yang tidak teratur   (lumpy demand) dan belum adanya sistem pengendalian persediaan yang terstruktur.   Penelitian ini bertujuan untuk membandingkan akurasi metode peramalan Croston dan   Syntetos-Boylan Approximation (SBA), serta menilai efektivitas pengendalian persediaan   metode Min-Max dalam menurunkan Total Inventory Cost (TIC) dibandingkan metode   intuitif. Penelitian menggunakan metode Croston dan SBA untuk peramalan permintaan,   uji eror menggunakan MAD, RMSE, dan MASE, sedangkan validasi dilakukan melalui   peta Moving Range (MR), metode Min-Max dalam menentukan safety stock, minimum   stock, dan maximum stock, serta menghitung TIC. Hasil penelitian menunjukkan bahwa   metode SBA menghasilkan nilai eror lebih rendah, yaitu 2,21 dibandingkan Croston 2,23   dan tervalidasi peta MR. Selain itu, perhitungan metode Min-Max dengan penetapan   minimum stock menghasilkan TIC sebesar Rp253.040.337,25 dengan efisiensi 21,46%,   sedangkan penetapan maximum stock menghasilkan TIC sebesar Rp253.999.803,20   dengan efisiensi 21,17% dibandingkan metode intuitif perusahaan yang mencatat TIC   tertinggi sebesar Rp322.193.239,46. Temuan ini membuktikan bahwa penerapan metode   peramalan SBA dengan pengendalian persediaan Min-Max mampu meningkatkan efisiensi   biaya dan pengelolaan persediaan spare part pada permintaan yang bersifat lumpy.     The availability of spare parts plays an important role in maintaining smooth machine   operations, particularly in the flexible packaging industry such as PT XYZ. The company   has experienced delays in procuring imported spare parts due to irregular demand patterns   (lumpy demand) and the absence of a structured inventory control system. This study aims   to compare the accuracy of the Croston and Syntetos-Boylan Approximation (SBA)   forecasting methods, as well as to assess the effectiveness of the Min-Max inventory control   method in reducing Total Inventory Cost (TIC) compared with the intuitive method. The   research employs the Croston and SBA methods for demand forecasting, error testing using   MAD, RMSE, and MASE, with validation conducted through the Moving Range (MR)   chart, while the Min-Max method is applied to determine safety stock, minimum stock, and   maximum stock, and to calculate TIC. The results show that the SBA method produces a   lower error value of 2.21 compared with Croston’s 2.23 and is validated by the MR chart.   In addition, the Min-Max method with minimum stock settings yields a TIC of   Rp253,040,337.25 with an efficiency of 21.46%, while the maximum stock setting results   in a TIC of Rp253,999,803.20 with an efficiency of 21.17%, compared with the company’s   intuitive method which recorded the highest TIC of Rp322,193,239.46. These findings   demonstrate that the application of the SBA forecasting method combined with Min-Max   inventory control can improve cost efficiency and spare part inventory management under   lumpy demand conditions.
date: 2025-08-27
type: Thesis
type: NonPeerReviewed
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identifier: http://repository.upi.edu/140240/1/S_TL_2106415_Title.pdf
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identifier: http://repository.upi.edu/140240/2/S_TL_2106415_Chapter1.pdf
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identifier: http://repository.upi.edu/140240/3/S_TL_2106415_Chapter2.pdf
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identifier: http://repository.upi.edu/140240/4/S_TL_2106415_Chapter3.pdf
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identifier: http://repository.upi.edu/140240/5/S_TL_2106415_Chapter4.pdf
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identifier: http://repository.upi.edu/140240/6/S_TL_2106415_Chapter5.pdf
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identifier: http://repository.upi.edu/140240/7/S_TL_2106415_Appendix.pdf
identifier:   Amelia Lestari, - and Amay Suherman, - and Hanissa Okitasari, -  (2025) PENGENDALIAN PERSEDIAAN SPARE PART MENGGUNAKAN KOMPARASI METODE SBA DAN MIN-MAX DI PT XYZ.  S1 thesis, Universitas Pendidikan Indonesia.   
relation: https://repository.upi.edu/