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All Journal EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA IJoASER (International Journal on Advanced Science, Education, and Religion) Jurnal Sastra Indonesia International Journal of Marine Engineering Innovation and Research Varia Humanika Sibatik Journal : Jurnal Ilmiah Bidang Sosial, Ekonomi, Budaya, Teknologi, Dan Pendidikan Jurnal Al-Qiyam Jurnal Tana Mana Journal of Artificial Intelligence and Digital Business Innovative: Journal Of Social Science Research Impression : Jurnal Teknologi dan Informasi J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Nugroho, Azis
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ANALISIS MENURUNNYA TEKANAN LUBRICATING OIL PADA DIESEL GENERATOR DI KM. DHARMA KARTIKA VII Dolly Sirait, Maruli; Nugroho, Azis; Sandi, Wulan Marlia; Zainuddin, Mochammad; Kristiyono, Antonius Edy
SIBATIK JOURNAL: Jurnal Ilmiah Bidang Sosial, Ekonomi, Budaya, Teknologi, Dan Pendidikan Vol. 5 No. 2 (2026)
Publisher : Penerbit Lafadz Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/sibatik.v5i2.4397

Abstract

Diesel generators are vital components in a ship's machinery system that converts mechanical energy into electrical energy. Diesel generators serve as the primary source of electrical power for various onboard needs, such as ship operations, navigation, communications, comfort, and other equipment. The lubrication system (lubricating oil) is a special liquid that plays a crucial role in lubricating engine components, ensuring smooth engine operation, and maintaining the performance and reliability of diesel generator engines. A decrease in lubricating oil pressure can cause overheating, increased friction between components, and even overall engine damage. This study aims to analyze the causes of the decrease in lubricating oil pressure in the diesel generator on the KM. Dharma Kartika VII ship and its handling efforts. The method used is a descriptive qualitative approach with data collection techniques through direct observation, interviews with engineers, documentation, and literature studies. The results of this study are expected to serve as a practical reference for ship crews and maritime cadets in handling disturbances in the diesel generator lubrication system appropriately.
Analisis Pengaruh Kinerja Turbocharger pada Daya Mesin Induk Pada Kapal LPG/C Cipta Diamond Robbi, Shofa Dai; Lao, Richard Imanuel Aldilenz; Darwis, Muhammad; Putri, Indah Ayu Johanda; Nugroho, Azis; Kristiyono, Antonius Edy
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 4 (2026): November - January
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i4.4259

Abstract

Sea transportation is essential to global logistics, and the efficiency of a vessel’s propulsion system is critical to operational performance, especially on LPG carriers. Turbochargers enhance diesel engine volumetric efficiency by utilizing exhaust gases to compress intake air, enabling more complete combustion and greater power output. Declining turbocharger performance can reduce engine power, increase fuel consumption, and raise exhaust gas temperatures beyond safe limits. This study investigates the impact of turbocharger performance on the main engine power output of the LPG/C Cipta Diamond vessel. This study employs a descriptive qualitative approach, using data collection techniques such as direct observation, structured interviews with chief engineers and technicians, and documentation of engine logbook data. The collected data were analyzed using the Fishbone method (Ishikawa diagram) to identify the root causes of the observed decline in turbocharger performance. The findings indicate that several factors influence turbocharger performance, including the physical condition of its components, the cleanliness of the air intake ducts, exhaust gas temperature levels, and lubricant quality. Additionally, human factors and maintenance scheduling were found to significantly affect the stability of turbocharger performance. Mitigation measures implemented to address performance degradation include routine maintenance, examination of exhaust gas pressure and temperature, replacement of wear-prone components such as bearings and seals, and the use of air pressure and temperature monitoring systems to enable early detection of performance decline.
Evaluation of Boiler Maintenance Using The Failure Mode and Effect Analysis Approach at KM. Tilongkabila Laili, Qurrotul; Nugroho, Azis; Robbi, Shofa Dai; Kristiyono, Antonius Edy; Sianturi, Intan; SUTRISNO, IMAM
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 1 (2026)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

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Abstract

Boilers experience frequent problems, such as scale formation, unstable steam pressure, incomplete combustion, and difficulty starting. Therefore, this study uses a quantitative method with the Failure Mode and Effect Analysis (FMEA) approach, which aims to determine maintenance and prevention to minimize these problems. This method determines the failure priority obtained from the Risk Priority Number (RPN) calculation based on assessment factors such as severity, frequency of occurrence, and the likelihood of failure being detected in each component. The results of these calculations indicate that the steam drum component falls into the highest category, with an RPN of 32. The other 12 components fall into the medium category: the feed water pump, electrode, photocell, nozzle, blower fan, solenoid valve, fuel pump, blowdown valve, main steam valve, scum valve, non-return valve, and gauge glass, with RPN values ranging from 12 to 24. Furthermore, the components in lowest category include the fuel filter, safety valve, and manometer, with RPN values ranging from 8 to 10. Therefore, the recommended improvements based on the FMEA results can be used as evaluation material to ensure the effectiveness of the improvements. Furthermore, regular boiler maintenance and monitoring are required, especially for components such as the steam drum, which requires additional routine maintenance schedules, repeated evaluations related to water treatment, and determining appropriate repairs for any steam drum failures.
An Analysis of the Damage of Cargo Pump Impeller with HCl Hydrochloric Acid Load on MT Cipta Anyer using the Hurber and Miles Method Mahendra, Reno Putra; Kristiyono, Antonius Edy; Pribadi, Teguh; Robbi, Shofa Dai; Nugroho, Azis
International Journal on Advanced Science, Education, and Religion Vol 8 No 2 (2025): IJoASER (International Journal on Advanced Science, Education)
Publisher : Sekolah Tinggi Agama Islam Al-Furqan, Makassar - Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33648/ijoaser.v8i2.865

Abstract

The cargo pump is an auxiliary device used to transfer cargo from the ship’s tank to a storage tank. One of the most critical components of the cargo pump is the impeller, which functions by converting mechanical energy into kinetic energy to move fluid. Hydrochloric acid, as cargo, is highly corrosive and requires specialized materials resistant to such conditions. On the MT Cipta Anyer, the impeller is constructed from Hastelloy X Tantalum to withstand corrosion. This study employs the Huber and Miles method to analyze impeller damage. Data collection was conducted through observation, interviews, documentation, and literature review. The research findings reveal that the primary cause of impeller damage is exposure to the corrosive cargo. Additional contributing factors include the use of spare parts that do not conform to the manual specifications, damaged impeller blades, and contamination within the impeller unit. These issues result in a decreased cargo discharge rate, leading to operational inefficiencies and financial losses for the company. The problems can be mitigated by implementing a regular Planned Maintenance System (PMS), ensuring the availability of manufacturer-recommended spare parts, and adhering to standard installation procedures. This study contributes practical insights into the causes of impeller damage in cargo pumps handling corrosive materials and provides actionable solutions to improve equipment reliability and operational efficiency in chemical tanker operations.
Co-Authors Ajie, Kuntoro Bayu Akhmad Kasan Gupron, Akhmad Kasan Alfayer, Marcelly Nur Ardiyan Wicaksono, Moh. Afif C. I. Sutrisno Dai Robbi, Shofa Dolly Sirait, Maruli Dwisaputra, Muhammad Akmal Eko Prayitno Fadlurrohman, Naufal Febriani, Meina Fijar, Ach. Harbul Gunarti, Monika Retno Haryono, Aditya Dwi Putra Herlambang, Sri Mulyanto Imanto, Frenki Irfan, Saiful Koosdaryani Koosdaryani Kristiyono, Antonius Edy Kusumawati, Elly Laili, Qurrotul Lao, Richard Imanuel Aldilenz Mahendra, Reno Putra Marianto, Sigit Maryandi, Dwi Cahyo Moejiono Moejiono Muh. Darwis Mulyanto, Sri Nas Haryati Setyaningsih Nasri Nasri, Nasri Noviantara, I Ketut Pria Prabaningrum, Dyah Prawoto, Agus Prayogi, Setiawan Bagus Putri, Indah Ayu Johanda Ratnaningsih, Dyah Retno Gunarti, Monika Robbi , Shofa Dai Robbi, Shofa Dai Robby, Shofa Dai Sandi, Wulan Marlia Sianturi, Intan Simatupang, Rama Syahputra Siti Qomariyah Sukron, Ainaya Alfatihah Suseno Suseno Teguh Pribadi Trisnowati Rahayu Wardana, Ricco Kusuma Yakin, Moh. Ainul Yudianto, Prima Yudha Yusr, Daffa Izaz Rafi Afif Fauzi ZAINUDDIN, MOCHAMMAD