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Analisis Kebocoran Exhaust Valve Mesin Induk Silinder Nomor 4 dan 5 Di MV Natascha Menggunakan Event Tree dan Fishbone Analysis Robbi, Shofa Dai; Sukarto, Ainur Raihan Nafi; Gupron, Akhmad Kasan; Kristiyono, Antonius Edy; Imanto, Frenki
Jurnal Informasi, Sains dan Teknologi Vol. 8 No. 1 (2025): Juni: Jurnal Informasi Sains dan Teknologi
Publisher : Politeknik Negeri FakFak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/isaintek.v8i1.321

Ships as the main mode of transportation that has a strategic role in trade transportation, the trade supply chain really needs proper operations. The operational of the ship is greatly influenced by the performance of the main engine. One of the critical components of the main engine is the exhaust valve which functions to regulate the release of exhaust gas from the combustion chamber to the exhaust manifold. The research is qualitative, collecting data through observation, documentation, and interviews. The event tree analysis (ETA) method is implemented the sequence of impacts produced by exhaust valve, such as high working temperatures, low engine performance, and standard functions described in the manual book so that leaks can be identified. So, From this analysis, the impacts that are traced sequentially to the performance of the exhaust valve itself can also be found. In addition, a fishbone diagram is used to describe the factors that cause leaks, including human error, managerial deficiencies, neglected inspections, and errors in maintenance techniques. Thus, the right handling can be found to overcome exhaust valve leaks, such as repairs required while the engine is stopped, repeated spare part submissions from ship management, conducting spindle thickness inspections, and improving maintenance techniques as specified in the engine manual book. Proper and effective preventive and handling actions based on the root causes outlined are essential to ensure proper operation of the machine.

Perawatan Injector Akibat Penyumbatan Bahan Bakar Pada Mesin Disel Di Kapal Km Logistik Nusantara 4 Maryandi, Dwi Cahyo; Prawoto, Agus; Rahayu, Trisnowati; Kristiyono, Antonius Edy; Robbi, Shofa Dai; Nugroho, Azis
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 1 (2025): Maret 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i1.730

Injector adalah suatu alat untuk menyemprotkan bahan bakar minyak menjadi kabut halus atau gas yang akan mempermudah gas tersebut terbakar di dalam ruang bakar mesin. Proses pengabutan ini bertujuan agar bahan bakar mudah bercampur dengan udara dan terbakar secara sempurna di dalam ruang bakar mesin. Dengan lancarnya sirkulasi bahan bakar di dalam mesin maka akan berdampak pada efisiennya kinerja injector. Penelitian ini bertujuan untuk menyelidiki penyebab masalah injector pembakaran pada mesin diesel kapal KM Logistik Nusantara 4 dan merumuskan strategi pemeliharaan yang dapat menyelesaikan masalah tersebut secara efektif. Penelitian ini menggunakan metode reduksi data untuk menghilangkan materi-materi yang tidak perlu dan mengorganisasikan data sehingga dapat ditarik kesimpulan akhir, hasil akhir penelitian menunjukkan bahwa penyebab kerusakan injector disebabkan oleh terkontaminasi partikel asing dalam bahan bakar. Dengan itu diperlukan perawatan rutin seperti pembersihan injector dan filter secara berkala. Sehingga untuk mempertahankan kualitas injector bahan bakar di kapal, memperpanjang usia mesin kapal, dan meningkatkan efisiensi operasional kapal An injector is a device to spray fuel oil into a fine mist or gas that will make it easier for the gas to burn in the combustion chamber of the engine. This fogging process aims to make the fuel easily mix with the air and burn perfectly in the engine's combustion chamber. With the smooth circulation of fuel in the engine, it will have an impact on the efficiency of the injector performance. This study aims to investigate the cause of the combustion injector problem in the diesel engine of the KM Logistik Nusantara 4 ship and formulate a maintenance strategy that can solve the problem effectively. This study uses a data reduction method to eliminate unnecessary materials and organize the data so that a final conclusion can be drawn, the final results of the study show that the cause of the damage to the injector is caused by contamination of foreign particles in the fuel. With that, regular maintenance is required such as regular cleaning of injectors and filters. So as to maintain the quality of the fuel injector on the ship, extend the life of the ship's engine, and improve the operational efficiency of the ship

Analisis Kerusakan Bearing Turbine Side di Turbocharger Type VTR-160 pada Auxiliary Engine Ashari, Muhammad Sadeli; Robbi, Shofa Dai; Sandi, Wulan Marlia; Kristiyono, Antonius Edy; Prawoto, Agus
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 1 (2025): Maret 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i1.787

Turbocharger adalah alat bantu yang digerakkan oleh gas buang auxiliary diesel engine dan berfungsi memompa udara untuk proses pembilasan dan pembakaran di dalam silinder. Kinerja mesin ini sangat bergantung pada turbocharger. Kerusakan pada turbocharger, khususnya pada bearing, dapat menurunkan performa mesin secara signifikan. Penelitian ini bertujuan untuk mengidentifikasi penyebab kerusakan bearing turbocharger, dampaknya terhadap auxiliary engine, serta upaya perbaikannya di MV Armada Sejati. Metode yang digunakan adalah deskriptif kualitatif dengan pendekatan fishbone. Data dikumpulkan melalui observasi, wawancara, dan dokumentasi. Hasil penelitian menunjukkan bahwa kerusakan disebabkan oleh tercampurnya oli pelumas dengan gas buang, keausan sealing bush, dan tersumbatnya lubang oil pump. Dampaknya antara lain berkurangnya suplai udara, kerusakan ring piston, dan pembakaran yang tidak sempurna sehingga daya mesin menurun. Upaya pencegahan dilakukan dengan perawatan rutin turbocharger, penggantian komponen lama, serta pergantian oli pelumas secara berkala. A turbocharger is an auxiliary exhaust device that is driven by the auxiliary exhaust of a diesel engine and functions to pump air for the rinsing and combustion process inside the cylinder. The performance of this engine is highly dependent on the turbocharger. Damage to the turbocharger, especially to the bearings, can significantly degrade engine performance. This study aims to identify the cause of damage to the turbocharger bearing, its impact on the auxiliary engine, and its repair efforts in MV Armada Sejati. The method used is qualitative descriptive with a fishbone approach. Data was collected through observation, interviews, and documentation. The results of the study showed that the damage was caused by the mixing of lubricating oil with exhaust gases, the wear of the sealing bush, and the clogging of the oil pump holes. The impact includes reduced air supply, damage to the piston rings, and imperfect combustion so that engine power decreases. Prevention efforts are carried out with regular maintenance of turbochargers, replacement of old components, and periodic changes of lubricating oil

Analisis Kerusakan Impeller Pada Sea Water Cooling Pump Mesin Induk Yanmar di Kapal Self-Propelled Oil Barge Seroja XXI Chahyono, Muhammad; Moejiono, Moejiono; Putri, Indah Ayu Johanda; Robbi, Shofa Dai; Kristiyono, Antonius Edy; Gunarti, Monika Retno
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.948

Kerusakan pada impeller sea water pump mesin induk dapat menyebabkan penurunan kinerja sistem pendingin, yang berpotensi merusak mesin induk dan mengganggu operasional kapal. Penelitian ini bertujuan untuk menganalisis penyebab kerusakan pada impeller sea water pump serta dampaknya terhadap kinerja pompa dan sistem pendingin secara keseluruhan. Metode yang digunakan dalam analisis ini meliputi inspeksi visual, pengukuran getaran, dan analisis material untuk mendeteksi cacat atau keausan pada impeller. Hasil analisis menunjukkan bahwa kerusakan impeller umumnya disebabkan oleh faktor-faktor seperti keausan akibat gesekan dengan partikel di dalam air laut, korosi akibat lingkungan laut yang agresif, serta kegagalan mekanis yang disebabkan oleh desain atau material impeller yang tidak sesuai. Kerusakan ini dapat menyebabkan penurunan aliran air laut yang masuk ke sistem pendingin mesin induk, yang pada akhirnya dapat meningkatkan suhu mesin dan memperpendek umur pakai komponen. Oleh karena itu, pemeliharaan yang tepat dan pemilihan material yang tahan terhadap korosi sangat penting untuk mencegah kerusakan yang lebih parah. Penelitian ini diharapkan dapat memberikan rekomendasi terkait perawatan dan penggantian impeller yang lebih efisien serta pemilihan material yang lebih tahan lama untuk meningkatkan keandalan pompa air laut pada mesin induk kapal.

Analisis Kerusakan Shaft Bearing Fire Fighting Pump SFP 250x350 Kapal AHTS. Logindo Sturdy Avchandra, Prassetya Wira; Gunarti, Monika Retno; Ratnaningsih, Dyah; Kristiyono, Antonius Edy; Prawoto, Agus; Robbi, Shofa Dai
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.721

Sarana transportasi utama dalam perdagangan laut, baik domestik maupun internasional, adalah kapal laut. Dalam operasionalnya, ada dua faktor yang dapat mengganggu kelancaran kapal, yaitu faktor alam dan faktor internal kapal itu sendiri. Salah satu komponen penting untuk keselamatan kapal adalah sistem pemadam kebakaran, yaitu Fire Fighting Pump (Fifi Pump). Fifi Pump diuji dan terdaftar oleh pihak ketiga seperti Badan Klasifikasi Indonesia (BKI), yang bertanggung jawab atas sertifikasi, validasi, dan inspeksi peralatan keselamatan. Kerusakan pada komponen pompa dapat mengurangi kinerjanya, salah satunya adalah kerusakan pada shaft bearing. Penelitian ini bertujuan untuk mengidentifikasi penyebab kerusakan shaft bearing pada Fifi Pump di kapal AHTS Logindo Sturdy dan tindakan perbaikannya. Metode yang digunakan adalah kualitatif deskriptif dengan analisis data dari wawancara, observasi, dan dokumen terkait. Hasil penelitian menunjukkan bahwa kerusakan bearing menyebabkan tekanan pompa tidak optimal, dan kurangnya pemeliharaan rutin menjadi penyebab utama. Tindakan yang diambil adalah mengganti bearing yang rusak dan melaksanakan sistem pemeliharaan yang terjadwal secara rutin.

Analisis Faktor-faktor Penyebab Overflow Pada Pengoperasian Fuel Oil Purifier Mitsubhisi Kakoki Kaisha Sj-10 Di MV. CAMILLA Fadlurrohman, Naufal; Zainuddin, Mochammad; Mulyanto, Sri; Kristiyono, Antonius Edy; Gunarti, Monika Retno; Nugroho, Azis
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.861

Overflow pada Fuel Oil Purifier Merupakan permasalahan serius yang dapat mengganggu efisiensi operasional serta mengakibatkan kerugian bahan bakar secara signifikan. Penelitian ini bertujuan untuk menganalisis faktor-faktor penyebab terjadinya overflow pada purifier mitsubhisi kakoki kaisha sj-10 di MV. Camilla. Penulis merangkum permasalahan-permasalahan dan mencoba memecahkan masalah dengan menggunakan metode observasi langsung, wawancara, dokumentasi, serta studi pustaka untuk memperoleh data-data yang berhubungan fuel oil purifier yang berguna untuk mendukung kelancaran penulis dalam pembuatan skripsi ini. Hasil penelitian menyimpulkan bahwa overflow disebabkan faktor teknis, seperti kerusakan komponen seperti bowl disc kotor, drain nozzle tersumbat, main seal aus dan kesalahan pemilihan gravity disc, serta faktor non teknis berkaitan dengan aspek manusia, seperti kurang disiplin, kelalaian ataupun ketidaksesuaian operator dalam perawatan dan prosedure operasional standar (SOP). Penelitian juaga mengungkap dampak ekonomi overflow yang mencapai puluhan juta rupiah per bulan.

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

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.

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

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.

Analisis Penyebab Berkurangnya Produksi Air Tawar Pada Fresh Water Generator Pada MV. Sao Oasis Dani, Hanif Rahman; Simatupang, Rama Syahputra; Yudianto, Prima Yudha; Kristiyono, Antonius Edy; Gunarti, Monika Retno
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.1449

Fresh Water Generator (FWG) sangat penting untuk mengubah air laut menjadi air tawar di kapal, menopang operasional dan kehidupan kru. Selama pelayaran MV. Sao Oasis, penurunan produksi FWG diamati, berpotensi mengganggu ourutaperasi kapal. Penelitian ini mengidentifikasi penyebab penurunan ini dan mencari solusi perbaikan. Menggunakan metode deskriptif dan studi kasus berdasarkan observasi dan dokumentasi teknis, penelitian menemukan bahwa faktor-faktor utama yang mengurangi produksi air tawar adalah: penumpukan scaling (kerak garam) di evaporator dan penukar panas, penurunan suhu di penukar panas shell and tube, penurunan tekanan vakum di evaporator, dan penurunan suhu air laut yang masuk ke sistem. Keempat faktor ini mengganggu proses penguapan dan kondensasi FWG. Untuk mengoptimalkan produksi FWG, langkah-langkah yang diambil meliputi: perawatan evaporator rutin dengan sirkulasi kimia, pembersihan kondensor berkala untuk mencegah penumpukan kerak, dan pemantauan kinerja harian melalui pencatatan logbook. Evaluasi data logbook membantu mendeteksi penurunan kinerja lebih awal dan merencanakan perawatan preventif, memastikan FWG beroperasi efisien dan stabil.

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

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.

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