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All Journal Jurnal Teknik Industri : Jurnal Hasil Penelitian dan Karya Ilmiah dalam Bidang Teknik Industri AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Unistek: Jurnal Pendidikan dan Aplikasi Industri G-Tech : Jurnal Teknologi Terapan JISO : Journal of Industrial and Systems Optimization Jurnal Teknologi dan Manajemen Industri Terapan Jurnal Pengabdian Kolaborasi dan Inovasi IPTEKS VIDHEAS: Jurnal Nasional Abdimas Multidisiplin Journal of Optimization System and Ergonomy Implementation
Siti Rahayu
Universitas Pelita Bangsa
Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences Transportation

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Analisis Total Productive Maintenance Menggunakan Metode Overall Equipment Effectivenes (OEE) dan Six Big Losses Pada Mesin Curing Tire Press di PT.XYZ Siti Rahayu
Journal of Optimization System and Ergonomy Implementation Vol 3 No 01 (2025): Journal of Optimization System and Ergonomy Implementation
Publisher : Program Studi Teknik Industri S-1, Fakultas Teknik UPN Veteran Jakarta

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Abstract

This research was conducted at PT XYZ, a tire manufacturing company established in 1988 in Indonesia. The study focuses on the curing tire press machine, which has experienced high downtime issues. The purpose of this research is to analyze Total Productive Maintenance (TPM) using the Overall Equipment Effectiveness (OEE) method and calculate the Six Big Losses on the machine during the period of January to June 2023. Data was collected through observation, interviews, and literature review. The findings show that high breakdown frequency significantly impacted downtime and reduced production effectiveness. The OEE value of the curing tire press machine was 78.22%, which is below the global OEE standard of 85%. The largest factor hindering OEE achievement was Idling and Minor Stoppages, with a value of 21%. The proposed recommendations are expected to reduce downtime and improve machine performance, allowing PT XYZ to meet its production targets.
Model Perencanaan Material MRP-JIT untuk Meminimalkan Risiko Keterlambatan dalam Produksi Panel SDP Mohamad Fatur Ramdan; Siti Rahayu; Rini Siskayanti
UNISTEK Vol. 13 No. 2 (2026): Agustus 2026 - Februari 2027
Publisher : UNIVERSITAS ISLAM SYEKH YUSUF TANGERANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33592/unistek.v13i2.8914

Abstract

PT Kimindo Jaya Indonesia is an electrical panel manufacturing company that applies a Make-to-Order production system. One of the main problems faced by the company is material delay in Sub Distribution Panel (SDP) production, because several critical components are not available according to the assembly schedule. This study aims to develop an integrated Material Requirement Planning and Just-in-Time (MRP-JIT) material planning model to minimize delay risk in SDP panel production. This research used a descriptive quantitative approach with production data from January to June 2025. The data included production quantity, Bill of Materials, initial inventory, safety stock, scheduled receipts, supplier lead time, assembly schedule, and historical material delay data. Data processing was conducted through gross requirement calculation, net requirement calculation, Lot-for-Lot sizing, planned order receipt, planned order release, and JIT-based material arrival synchronization. The actual condition showed 10 material delay cases, with a total delay of 43 days and an average delay of 4.3 days per case. The proposed model scheduled material orders based on supplier lead time and targeted material arrivals one to two days before assembly. The results indicate that the MRP-JIT model can support the shift from reactive purchasing to preventive material planning.
ANALYSIS OF BRICK PRODUCTION MACHINE EFFECTIVENESS USING THE OVERALL EQUIPMENT EFFECTIVENESS (OEE) METHOD AT CV RH BATU BATA CILANGKARA Julian Bahrudin; Siti Rahayu; Rini Siskayanti
JISO : Journal of Industrial and Systems Optimization Vol. 9 No. 1 (2026): Juni 2026
Publisher : Universitas Maarif Hasyim Latif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51804/jiso.v9i1.87-95

Abstract

ABSTRAK CV RH Batu Bata Cilangkara merupakan usaha manufaktur skala kecil dan menengah yang bergerak di bidang produksi batu bata merah. Permasalahan yang terjadi pada perusahaan meliputi downtime mesin, hasil produksi yang berfluktuasi, serta produk cacat yang memengaruhi efektivitas mesin pencetak batu bata. Penelitian ini bertujuan untuk mengukur efektivitas mesin produksi menggunakan metode Overall Equipment Effectiveness dan mengidentifikasi kerugian produksi dominan menggunakan pendekatan Six Big Losses. Penelitian ini menggunakan metode kuantitatif deskriptif dengan pengumpulan data melalui observasi, wawancara, dan dokumentasi perusahaan. Data yang digunakan mencakup periode Januari sampai Mei 2025, meliputi jam kerja tersedia, downtime, waktu operasional, jumlah produksi, produk baik, dan produk cacat. Hasil penelitian menunjukkan bahwa rata-rata nilai Overall Equipment Effectiveness sebesar 81,19%, sehingga masih berada di bawah standar world class sebesar 85%. Rata-rata availability rate sebesar 90,58%, performance rate sebesar 92,18%, dan quality rate sebesar 97,19%. Nilai Overall Equipment Effectiveness terendah terjadi pada bulan April sebesar 74,63%, terutama disebabkan oleh tingginya downtime dan rendahnya capaian produksi. Analisis Six Big Losses menunjukkan bahwa breakdown losses menjadi kerugian dominan sebesar 15,00%, diikuti reduced speed losses sebesar 11,11%. Perusahaan perlu memprioritaskan preventive maintenance, inspeksi mesin rutin, standardisasi setup, pelatihan operator, dan pengendalian kualitas untuk mengurangi downtime, menstabilkan kecepatan produksi, dan meningkatkan efektivitas mesin. ABSTRACT CV RH Batu Bata Cilangkara is a small and medium manufacturing enterprise engaged in red brick production. The company faces production problems related to machine downtime, fluctuating output, and defective products, which affect the effectiveness of the brick molding machine. This study aims to measure machine effectiveness using the Overall Equipment Effectiveness method and identify dominant production losses using the Six Big Losses approach. This research used a descriptive quantitative method with data collected through observation, interviews, and company documentation. The data covered the period from January to May 2025 and included available working time, downtime, operating time, production output, good products, and defective products. The results showed that the average Overall Equipment Effectiveness value was 81.19%, which is below the world class standard of 85%. The average availability rate was 90.58%, the performance rate was 92.18%, and the quality rate was 97.19%. The lowest Overall Equipment Effectiveness value occurred in April at 74.63%, mainly due to high downtime and low production achievement. Six Big Losses analysis showed that breakdown losses were the dominant loss at 15.00%, followed by reduced speed losses at 11.11%. The company should prioritize preventive maintenance, routine machine inspection, setup standardization, operator training, and quality control to reduce downtime, stabilize production speed, and improve machine effectiveness.
COST-EFFICIENT MULTI-ITEM INVENTORY CONTROL FOR ELECTRICAL INSTALLATION MATERIALS USING EOQ, SAFETY STOCK, AND REORDER POINT Astri Zahra; Siti Rahayu; Rini Siskayanti
JISO : Journal of Industrial and Systems Optimization Vol. 9 No. 1 (2026): Juni 2026
Publisher : Universitas Maarif Hasyim Latif

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51804/jiso.v9i1.106-116

Abstract

Abstrak Penelitian ini membahas pengendalian persediaan material instalasi listrik pada PT Samsun Jaya Indonesia, yaitu perusahaan jasa konstruksi berbasis proyek. Permasalahan utama yang terjadi adalah kebijakan pemesanan material masih didasarkan pada kebutuhan proyek, kondisi stok, dan pengalaman bagian administrasi, sehingga belum terdapat acuan jumlah pemesanan yang optimal. Penelitian ini bertujuan untuk menentukan jumlah pemesanan ekonomis, persediaan pengaman, titik pemesanan kembali, dan total biaya persediaan pada sepuluh jenis material instalasi listrik. Penelitian menggunakan pendekatan kuantitatif deskriptif dengan metode studi kasus. Data yang digunakan meliputi pemakaian material, biaya pemesanan, biaya penyimpanan, harga material, dan waktu tunggu pengadaan. Analisis dilakukan menggunakan metode Economic Order Quantity, safety stock, reorder point, dan total inventory cost. Hasil penelitian menunjukkan bahwa usulan kebijakan berbasis Economic Order Quantity menghasilkan total biaya persediaan sebesar Rp34.627.955 per tahun, lebih rendah dibandingkan kebijakan aktual perusahaan sebesar Rp42.143.133 per tahun. Total efisiensi biaya yang diperoleh adalah Rp7.515.179 per tahun. Hasil ini menunjukkan bahwa metode Economic Order Quantity yang dilengkapi safety stock dan reorder point dapat digunakan sebagai dasar perencanaan persediaan yang lebih terukur. ABSTRACT This study analyzes the inventory control of electrical installation materials at PT Samsun Jaya Indonesia, a project-based construction service company. The company manages several electrical materials with different demand characteristics, while its current ordering policy still relies on project needs, stock conditions, and practical experience. This study aims to determine the economic order quantity, safety stock, reorder point, and total inventory cost for ten main electrical installation materials. A quantitative descriptive approach with a case study method was used. The data consisted of material usage, ordering cost, holding cost, purchase price, and procurement lead time. The analysis applied Economic Order Quantity, safety stock, reorder point, and total inventory cost. The results show that the proposed Economic Order Quantity policy generates a total inventory cost of Rp34,627,955 per year, which is lower than the current company policy of Rp42,143,133 per year. Therefore, the total annual inventory cost efficiency is Rp7,515,179. These findings indicate that Economic Order Quantity combined with safety stock and reorder point can be used as a measurable basis for inventory planning in project-based electrical installation services.
Co-Authors Adi Fitra Adi Rusdi Widya Agus Suwarno Alex Saputra Alfred Satyahadi Astri Zahra Era Febriana Aqidawati Fibi Eko Putra Hasyrani Windyatri Ikhsan Romli Julian Bahrudin Kelvin Leo Mohamad Fatur Ramdan Nida An Khofiyah Nurhidayanti, Nisa Rini Siskayanti Riri Nur Fadilah Rudy Effendi Listyanto Satria Bagus Aji Siti Athrotul Muthoharoh Sugeng Budi Rahardjo Supriyati Supriyati Supriyati Supriyati Syarah Rizkia Feriaty Tri Ngudi Wiyatno