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All Journal Majalah Ilmiah Gema Maritim Marine Science and Technology Journal Eksergi: Jurnal Teknik Energi Jurnal Inovasi Hasil Pengabdian
Eka Darmana, Eka
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Journal : Marine Science and Technology Journal

 1 
Studi Tidak Tercapainya Temperature Secara Optimal pada Mesin Pendingin (Refrigerator) di Kapal MT. Kuang Fakhrozi, Rizal Fahmi; Darmana, Eka; Wilastari, Santhi
Marine Science and Technology Journal Vol 5 No 2 (2024): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.3355

Abstract

A refrigeration machine is a device used to transfer heat from indoors to outdoors to make the temperature of the room lower with the aim of cooling/preserving food. Cooling machines on MT ships. Kuang, when the ship was sailing, experienced that the optimal temperature was not reached, so it was necessary to observe this problem. So that action can be taken so that similar problems can be resolved and do not happen again. This research is based on a case study conducted on the MT ship. Kuang. The method that the author uses in collecting data is the observation method, namely a data collection method by making direct observations of the research object, an interview method with the author communicating with technicians regarding the problem being handled, as well as a literature study method, namely collecting references contained in relevant books, journals and studies. Approach to problem analysis using a qualitative descriptive method. From the results of the discussion carried out by the author, it is known that the optimal temperature was not achieved due to freon leaks in the evaporator pipe, dirty oil separator, dirty condenser and sea chest, and the cooling machine door not being tight. This is the impact of lack of maintenance on the cooling machine (refrigerator) and the cooling machine is quite old.
Analisis Masuknya Air Pendingin kedalam Cylinder Main Engine di Kapal MT. Transko Bima Rodhi, Alex Bima; Darmana, Eka; Pujiyanto, Fajar
Marine Science and Technology Journal Vol 6 No 1 (2025): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v2i1.3684

Abstract

Ships are water transportation tools used in the sea, rivers, or lakes for various purposes such as transporting goods, passengers, and fishing. Ships generally use power from engines, such as diesel engines to drive the propellers that propel the ship in the water. The problem experienced by the author when carrying out sea practice for one year (July 2023 - July 2024), on the main engine of the MT. Transko Bima ship is the entry of coolant into the cylinder, which can have a negative impact on the performance of the main engine. Therefore, this study aims to analyze the causes of the entry of coolant into the main engine cylinder on the MT. Transko Bima ship. The research method used is a case study with a descriptive qualitative approach. Data were obtained through direct observation, interviews with engine crews, literature studies and documentation during sea practice on the MT. Transko Bima ship. The results of the study showed that damage to the exhaust valve seat was the main cause of the entry of coolant into the cylinder. This problem has an impact on the engine experiencing corrosion, water hammer, and can cause further damage if not handled immediately. Repair efforts include replacing damaged components and routine maintenance of the cooling system to prevent overheating. This research is expected to contribute to ship engine crews in handling similar problems and improving the reliability of ship operations.
Analisa Terhambatnya Proses Discharge Pada Cargo Pump Di Kapal MT. Karmila Darmana, Eka; Supriyadi, Agus
Marine Science and Technology Journal Vol 2 No 2 (2021): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v1i2.1587

Abstract

PT. Pertamina appointed the MT ship. Karmila becomes a bunker ship, which is useful for supplying MFO fuel to Pertamina's ships and Pertamina's charter ships operating in the Dumai port area. So that the cargo pump plays a very important role in the fuel supply process. Obstruction of the discharge process will result in a decrease in the performance of the cargo handling process which will hamper ship operational activities. The method used is a case study with a qualitative descriptive analysis approach. Data collection obtained by direct observation at MT. KARMILA which is a ship owned by PT. PERTAMINA and direct interviews with the ship's crew. In addition, data sources are also obtained from the instruction manual, SOPs on board and references from articles related to pumping rates. The results of this study state that the problems that occur when the cargo supply bunker discharge is caused by several factors such as difficulty in adjusting the pumping rate for the supply bunker according to pipe capacity, the temperature increase of the electro motor cargo pump (overheating), the high initial load so that the generator is unstable, damage to the connection hose to the supply bunker. These things cause problems when the cargo discharge process for supply bunkers. One solution to overcome these problems is to control the rotation of the electro motor cargo pump using an inverter so that the pumping rate can be controlled as needed so that excess load and pressure can be avoided.
Analisis Propeller Yang Tidak Balance pada Kapal Tugboat Anugerah 1 Apriyanto, Ricky; Darmana, Eka; Wilastari, Santhi
Marine Science and Technology Journal Vol 4 No 2 (2023): Marine Science and Technology Journal
Publisher : Universitas Ivet

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/maristec.v4i1.2718

Abstract

The case study on the tugboat award 1 experienced problems with the propeller which made it possible to be out of balance. The purpose of this research is to find out the causes of unbalanced propellers on ships and how to overcome them. The use of research methods using observation, interviews and data analysis by observing, reviewing and analyzing objects or problems that will be examined directly so that the data obtained is objective because the author experienced it himself and was at the ship docking location when the work of the propeller was not perfect. From the data obtained, then an analysis of descriptive qualitative methods was carried out. The results of this study state that the unbalanced propeller is caused by fouling, erosion, cracks, and deformation of the propeller blades. Possible triggering factors include long absence of maintenance, old components, and negligence in operation. An unbalanced propeller if not handled immediately is feared to cause damage to other components such as damage to the stern tube which results in leaks and can endanger the ship.
Co-Authors Agus Supriyadi Apriyanto, Ricky Bayu Samudra, Rezky Berkah Fajar Tamtomo kiono Fakhrozi, Rizal Fahmi Khamdilah, Ali Nur Hidayat, Eko Pujiyanto, Fajar Rodhi, Alex Bima Saleh, Agus Suprihono Syaiful - Taufiq Hidayat Utami, Tini Wilastari, Santhi