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All Journal Jurnal Sistem dan Manajemen Industri Jurnal Teknologi dan Manajemen Industri Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Journal of Industrial Engineering and Operation Management (JIEOM) Industrika : Jurnal Ilmiah Teknik Industri Journal of Industrial View Jurnal Inovasi Masyarakat Multicore International Journal of Multidisciplinary (MIJM)
Asep Anwar
Universitas Widyatama
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Health Professions Industrial & Manufacturing Engineering Mathematics Social Sciences Transportation

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Usulan Peningkatan Kapasitas Produksi dengan Metode ConWIP di PT UTC Aerospace System Bandung Operation Yudisthira Cahaya Putra Anugrah; Asep Anwar
Industrika : Jurnal Ilmiah Teknik Industri Vol. 10 No. 3 (2026): Industrika: Jurnal Ilmiah Teknik Industri
Publisher : Fakultas Teknik Universitas Tulang Bawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37090/q6ahr460

Abstract

PT. UTC Aerospace Systems Bandung Operations faces challenges in meeting the production targets for Actuator Body Sub Assembly in Cell Shaft division, with a shortfall of 66 units per month and an impact on On Time Delivery. This research aims to identify and analyze capacity limiting factors and the root causes of production flow efficiency problems. The research methodology includes cycle time analysis to understand the processes and production flow, as well as a simulation of the current production system. This approach is used to investigate areas where WIP congestion occurs and how it hinders the smooth flow of production. Using a JaamSim based discrete simulation, this study analyzes the implementation of ConWIP to optimize production capacity in the Cell Shaft division. The analysis results show significant WIP congestion at operation station 1655, which hinders material flow and reduces production capacity. Through the JaamSim simulation, this study examines how the application of ConWIP can increase production capacity from 574 units to 576 units per month. Keywords: Bottleneck, Capacity, Constant Work In Process, Production Flow
Reliability-Based Preventive Maintenance Planning of Pressure Regulator Shut-Off Valve Components on CN235 Aircraft Muhammad Prabowo; Asep Anwar
Multicore International Journal of Multidisciplinary (MIJM) Vol. 2 No. 2 (2026): November
Publisher : Marasofi International Media and Publishing (MIMP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64123/mijm.v2.i2.4

Abstract

Aircraft component reliability is essential for maintaining flight safety and operational continuity. The Pressure Regulator Shut-Off Valve (PRSOV) is a critical component of the CN235 bleed air system because it regulates and shuts off pressurized air supplied to the aircraft environmental control system. Historical maintenance records indicated 17 PRSOV-related failures during 0–8,952 flight hours, including failures involving the valve, connector, diaphragm, seal O-ring, spring, and solenoid. This study aims to characterize PRSOV reliability, identify dominant failure modes and their causes, and develop reliability-based preventive maintenance recommendations. A quantitative reliability analysis was conducted using a two-parameter Weibull distribution, supported by Failure Mode and Effects Analysis (FMEA) and Fault Tree Analysis (FTA). Weibull analysis indicated a shape parameter greater than one, representing an increasing failure-rate pattern and suggesting the influence of component aging and wear-out mechanisms. FMEA was used to prioritize failure modes based on severity, occurrence, and detection, while FTA was applied to identify the logical relationships among basic failure causes. The integrated results indicate that preventive maintenance intervals should be differentiated according to component-specific reliability characteristics and failure risks rather than relying solely on the manufacturer's general maintenance interval. The proposed approach provides a basis for improving PRSOV reliability, reducing unscheduled maintenance, and supporting CN235 operational safety.
Co-Authors Anita Juraida Ayu Endah Wahyuni Didit Damur Rochman Dimas Aldi Ramadani Iklima Diladiva Tresna Anwar Irpan Maulana Kaniar Widina Moh. Sidik Priadana Muhammad Prabowo Nugi Mohammad Nugraha Oktri Mohammad Firdaus Pertiwi Citra Dewi Rendiyatna Ferdian Reynaldi Nugraha Rifqi Taufik A Rizky Maulidan Tiaradia Ihsan Yudisthira Cahaya Putra Anugrah