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Prasetyo, Bahariandi Aji
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ANALISIS PENGENDALIAN PRODUKSI DAN PERSEDIAAN PRODUK DONAT PADA UKM DONAT NB Tarihoran, Rifka; Prasetyo, Bahariandi Aji
Computer Science and Industrial Engineering Vol 13 No 1 (2025): Comasie Vol 13 No 1
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v13i1.10291

Abstract

UKM Donat NB merupakan usaha kecil menengah yang bergerak di bidang produksi donat. Permintaan donat di UKM Donat NB sangat fluktuatif, sehingga sering kali terjadi kelebihan stok atau kehabisan stok. Penelitian ini bertujuan untuk menentukan metode peramalan terbaik dan menghitung kebutuhan bahan baku menggunakan metode Economic Order Quantity (EOQ), Safety Stock, dan Reorder Point (ROP) untuk mengoptimalkan pengendalian persediaan. Metode peramalan yang digunakan dalam penelitian ini adalah Moving Average (MA), Weighted Moving Average (WMA), dan Holt-Winters, dengan uji akurasi menggunakan MAD, MSE, dan MAPE berdasarkan data permintaan dari April 2024 hingga Maret 2025. Hasil penelitian menunjukkan bahwa metode Holt-Winters merupakan metode yang paling akurat, dengan tingkat kesalahan terendah. Peramalan permintaan donat untuk empat bulan mendatang diperkirakan sebesar 33.374 pcs pada bulan April, 27.570 pcs pada bulan Mei, 23.672 pcs pada bulan Juni, dan 21.306 pcs pada bulan Juli. Berdasarkan perkiraan tersebut, perhitungan EOQ, Safety Stock, dan ROP dapat menjadi acuan dalam menentukan jumlah dan waktu pemesanan bahan baku, sehingga perusahaan dapat meminimalisir risiko terjadinya kelebihan stok maupun kekurangan stok.
ANALISIS PENGENDALIAN KUALITAS PRODUK BATAKO PADA PT BODEM MAS JAYA Ardianto, Pujo; Prasetyo, Bahariandi Aji
Computer Science and Industrial Engineering Vol 13 No 3 (2025): Comasie Vol 13 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v13i3.10495

Abstract

PT Bodem Mas Jaya is a company engaged in the production and distribution of concrete blocks in Batam City. From December 2023 to November 2024, the company faced quality control issues, with the defect rate consistently exceeding the maximum allowable limit of 3%. This affected the company’s ability to meet market demand optimally. This study aims to analyze quality control in the concrete block production process and evaluate the results of implemented improvement initiatives. The method used is Six Sigma with the DMAIC (Define, Measure, Analyze, Improve, Control) approach. The analysis showed that before improvements, the production process had an average DPMO of 20,510.7 with a sigma level of 3.54, and the number of defective products reached 14,395 pcs out of a total output of 132,517 pcs. After implementing improvements such as morning briefings, SOP development, sand filtering, machine maintenance, and cleaning of the production area, process performance improved. The average DPMO decreased to 17,004.8, the sigma level increased to 3.62, and the percentage of good products rose to 95% – 99%, with the number of defective products reduced to 6,200 pcs out of a total output of 121,622 pcs during the period from December 2024 to May 2025.
Co-Authors Ardianto, Pujo kurnia, renita Oktavia, Yunisa Pangaribuan, Hotma Pratiwi, Mariska Putri Sihotang , Sunarsan Sirait, Ganda Sumantika, Arsyad Tambunan, Juniansyah Tarigan , Elsya Paskaria Loyda Tarigan, Elsya P.L. Tarigan, Elsya Paskaria Loyda Tarihoran, Rifka Uma, Dewi Zetli, Sri