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Analysis of ceramic product quality: A Six Sigma approach Ridwan, Asep; Sonda, Atia; Zilardhi, Athariq
Journal Industrial Servicess Vol 10, No 1 (2024): April 2024
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jiss.v10i1.24505

Abstract

In the industrial world, the quality and productivity of products play a crucial role in the success of various production systems. The ceramic industry encounters challenges related to defective products due to various factors. When COVID-19 struck, one ceramic tile company temporarily laid off workers and suspended operations at several plants due to a decrease in orders. In January 2023, the company only opened three plants. It was found that many problems were encountered particularly with the production of SL-type ceramic tiles (25 cm × 25 cm). They were still striving to reduce these issues and ensure smooth production processes. The problems that frequently occur can be attributed to the production process, materials, machinery, or human factors. Consequently, research has been conducted to control defective products, thereby enhancing production quality using the Six Sigma DMAIC method. The DMAIC methodology is the cornerstone of Six Sigma problem-solving, involving sequential improvement steps. These steps in the DMAIC method include Define, Measure, Analyze, Improve, and Control. Based on the conducted calculations, an average DPMO (Defects per Million Opportunities) value of 8621.2 was obtained, with an average sigma value of 3.91. DPMO, which measures failure in the DMAIC method, indicates failures per million opportunities. Based on this, it suggests that production falls within the average category of the Indonesian industry and is deemed sufficiently satisfactory. This study also provides improvement steps that need to be taken to reduce defective products.
Supply chain performance analysis using discrete system simulation method: A case study in a furniture company Trenggonowati, Dyah Lintang; Ulfah, Maria; Ridwan, Asep; Bahauddin, Achmad; Ekawati, Ratna; Sonda, Atia; Umyati, Ani; Fachrur, Aditya Rahadian; Yadi, Yayan Harry
Journal Industrial Servicess Vol 9, No 1 (2023): April 2023
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jiss.v9i1.19049

Abstract

As time progresses, the evolving industrial world demands that companies devise the best strategies to achieve their desired goals. A well-designed system is expected to increase the profitability of the company itself. CSD is an interior furniture and interior design studio located in the city of Cilegon, Banten. The challenge faced by CSD is the inability to meet order deadlines during periods of high demand. The objective of this study is to assess the level of machine utility within the existing process and provide recommendations to achieve an optimal process. The methodology employed includes system simulation and model development using Promodel software. Additionally, statistical tests, model validation, and ANOVA tests were conducted. Based on the results, it was determined that the level of machine utility at CSD is 17.48% for shaping planning, 30.08% for grinding, 14.88% for assembly, and 29.98% for finishing. The proposed solution, scenario or proposal 2, suggests combining the assembly and finishing workstations, resulting in increased machine utility.
Penerapan metode six sigma dalam pengendalian kualitas di industri tekstil PT XYZ Trenggonowati, Dyah Lintang; Ridwan, Asep; Ulfah, Maria; Herlina, Lely; Bahauddin, Achmad; Ekawati, Ratna; Arina, Faula; Ferdinant, Putro Ferro; Sonda, Atia; Fachrur, Adhitya Rahadian
Journal of Systems Engineering and Management Vol 1, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/joseam.v1i1.17587

Abstract

Perkembangan dunia industri sekarang mengakibatkan semakin banyaknya persaingan dalam dunia industri khususnya bidang tekstil. Dalam persaingan yang semakin ketat ini, perusahaan harus perusahaan harus mampu mempertahankan jumlah pelanggan dengan cara menjaga kualitas produk. PT. XYZ merupakan salah satu perusahaan industri penenunan label yang terletak di Tangerang Banten Indonesia, dengan produk yang paling banyak diproduksi adalah woven label. Banyaknya permintaan dari produk woven label ini diperlukan kualitas yang baik untuk memenuhi kriteria konsumennya. Oleh karena itu, diperlukan proses produksi yang juga sesuai dengan prosedur yang ditetapkan. Permasalahan yang terdapat pada PT. XYZ adalah banyaknya produk reject pada bagian produksi dan finishing. Hal ini ditunjukan pada data reject yang terjadi di bulan Desember 2021 sebanyak 1.285.876 dozen dan proses produksi yang belum terkendali secara statistic karena banyaknya jenis cacat (CTQ) sebesar 19 jenis. Banyaknya reject woven label ini mengakibatkan produksi tidak sesuai yang dijadwalkan, biaya operasional bertambah dan keuntunganpun bisa menurun. Oleh karena itu, PT. XYZ perlu melakukan perbaikan pengendalian kualitas yang salah satu caranya dengan metode Six Sigma. Tahapan pengendalian metode six sigma dilakukan dengan melakukan tahapan DMAI atau Define, Measure, Analyze, dan Improve. Berdasarkan hasil pengolahan data diperoleh nilai DPMO sebesar 2454,102 dan nilai sigma 4,318 yang berarti perusahaan merupakan rata-rata industri USA. Usulan yang peneliti berikan untuk PT. XYZ untuk mengurangi kecacatan yaitu dengan menetapkan settingan tension beam yang tepat disetiap produksi, membuat desain garis untuk pemotongan agar saat dipotong, garis tepi dapat lurus,  menyamakan persepsi atau membuat standar terkait reject PGM, operator mengontrol mesin setiap beberapa menit, dan mengganti benang yang sudah mau putus, agar mesin distop manual.
Hazard Potential Analysis at Banten 2 Steam Power Plant Using Job Safety Analysis (JSA) Method Dewantari, Nustin Merdiana; Mariawati, Ade Sri; Alamsyah, Resky Noer; Umyati, Ani; Herlina, Lely; Sonda, Atia
Journal of Systems Engineering and Management Vol 3, No 1 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/joseam.v3i1.24948

Abstract

Banten 2 Steam Power Plant is a crucial facility in electricity generation, utilizing steam as an energy source to drive turbines and produce electricity. The power generation process involves several key stages, where high-temperature steam is converted into mechanical energy and then into electricity through turbine rotation. In its operation, Banten 2 Steam Power Plant involves many workers with diverse working conditions and areas, making the level of risk and workplace accidents a primary concern. The Job Safety Analysis method is used to identify potential hazards in various areas such as firefighting areas, chimneys, and water treatment plants. The research findings indicate varying potential hazards, including risks of stumbling, slipping, trapping, scratching, exposure to flames, electric shock, and being struck by materials. Risk assessment shows high-risk levels: 5 for welding in the firefighting area, 4 for flue gas sampling, 5 for hydrant welding, and 3 for duplication and installation of membranes, cartridges, and vessel RO. Risk control is carried out through elimination, engineering, administrative controls, and the use of personal protective equipment (PPE).
Perancangan Detail Engineering Design (DED) dalam Upaya Revitalisasi Kawasan Permukiman Kumuh di Kelurahan Margaluyu Kota Serang Ramadhan, Tubagus Raihan; Sonda, Atia; Ulfah, Maria; Fachrur, Aditya Rahadian; Dewantari, Nustin Merdiana; Bahauddin, Achmad; Lufianawati, Dina Estining Tyas; Mariawati, Ade Sri; Herlina, Lely; Ummi, Nurul; Mutaqin, Ade Irman Saeful
Journal of Systems Engineering and Management Vol 3, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/joseam.v3i2.29493

Abstract

Permukiman kumuh di berbagai wilayah, termasuk di Kelurahan Margaluyu, Kota Serang, seringkali dihadapkan pada infrastruktur yang buruk, kepadatan penduduk tinggi, serta terbatasnya akses ke layanan dasar seperti sanitasi dan air bersih. Masalah ini diperparah oleh urbanisasi dan pertumbuhan penduduk yang pesat, sehingga diperlukan upaya revitalisasi untuk meningkatkan kualitas lingkungan. Salah satu langkah penting dalam upaya ini adalah perancangan Detail Engineering Design (DED), yang bertujuan menghasilkan gambar teknis lengkap dan spesifik sebagai panduan dalam pelaksanaan proyek. Dalam konteks ini, DED untuk jalan lingkungan dan sistem drainase di Kelurahan Margaluyu dirancang untuk meminimalisir kesalahan pelaksanaan dan menjamin keberlanjutan proyek. Kriteria konstruksi yang diusulkan mencakup jalan dengan fungsi penghubung antar kawasan dan sistem drainase untuk mengendalikan limpasan air hujan serta limbah. DED diharapkan dapat berfungsi sebagai landasan bagi peningkatan kesejahteraan masyarakat melalui perbaikan infrastruktur yang terstruktur dan berkelanjutan. Kesimpulan dari studi ini menunjukkan pentingnya pendekatan perencanaan yang terstruktur, serta koordinasi lintas pemangku kepentingan untuk memastikan desain yang diusulkan sesuai dengan kebutuhan masyarakat dan berdampak positif terhadap kualitas hidup di kawasan tersebut.