DIV - Teknika

Analisis Penurunan Produksi Air Tawar untuk meningkatkan performa Fresh Water Generator Di MV Glovis Diamond

Wed, 01 Jan 2025 00:00:00 GMT

Analisis Penurunan Produksi Air Tawar untuk meningkatkan performa Fresh Water Generator Di MV Glovis Diamond PRANANTA, APRIANDIKI This study examines the decline in freshwater production in the Fresh Water Generator (FWG) on the MV Glovis Diamond. The Fresh Water Generator is a critical auxiliary device on board the ship, producing freshwater from seawater to meet operational and crew needs. The problem is the decline in freshwater production, resulting in suboptimal production. This study aims to identify the factors causing the decline in freshwater production in the Fresh Water Generator and the ef orts taken to address this issue. The research method used is a qualitative descriptive method using a fishbone diagram. Data collection was conducted through observation, interviews, documentation, and literature review during sea practice on the MV Glovis Diamond from August 2024 to August 2025. The results indicate that the decline in freshwater production in the Fresh Water Generator was caused by several factors, including corrosion of the ejector nozzle, damage to the orifice in the feed water pipe, salt scale buildup on the evaporator, and dirt buildup on the condenser. These factors hinder the evaporation and condensation processes, resulting in a decline in freshwater production. Ef orts to address these issues include routine maintenance, cleaning the evaporator and condenser, replacing damaged components, and conducting inspections according to the procedures in the instruction manual. With regular maintenance and repairs, the Fresh Water Generator can return to optimal performance, ensuring the ship's fresh water needs are met and supporting smooth ship operations.

OPTIMALISASI PERAWATAN DAN KINERJA FRESH WATER GENERATOR TYPE TUBE GUNA MENUNJANG OPERASIONAL DI KAPAL CS GLORY

Wed, 01 Jan 2025 00:00:00 GMT

OPTIMALISASI PERAWATAN DAN KINERJA FRESH WATER GENERATOR TYPE TUBE GUNA MENUNJANG OPERASIONAL DI KAPAL CS GLORY BAHARI, NAJWAN "This research was motivated by a significant decline in fresh water production from the Fresh Water Generator (FWG) unit on CS. GLORY, dropping from a normal capacity of ±15 tons/day to less than 10 tons/day. This performance decline was characterized by an unstable system vacuum pressure (<70%). The purpose of this study is to analyze the factors causing condenser fouling and installation pipe leakage, as well as to identify the constraints behind the weak implementation of the Planned Maintenance System (PMS) onboard. The research Method used is descriptive qualitative with a case study and problem- solving approach. The data analysis technique applies the Fishbone Diagram (Ishikawa) to map out the root causes from the aspects of man, Machine, Method, and environment. Data were obtained through participatory observation of Machine ry parameters, structured interviews with ship engineers, and documentation studies of the instruction manual book, engine logbook, and the PMS system. The results of the study indicated that the primary cause of the decline in FWG performance was mineral scale accumulation (scaling) on the condenser tubes which inhibited heat transfer, as well as air infiltration due to pinhole leaks in the outlet ejector pump pipeline installation. This issue was further aggravated by a reactive maintenance pattern driven by the heavy operational workload of the engine crew, causing PMS schedules to be bypassed. To resolve these problems, it is concluded that optimization is required through periodic chemical, scheduled pipe renewal, early leak detection utilizing the Soap Bubble Test, and standardizing performance-based maintenance via Condition Based Monitoring to ensure smooth fresh water supply operations onboard.

ANALISIS KERUSAKAN PLUNGER BARREL TERHADAP KINERJA FUEL INJECTION PUMP PADA GENERATOR DI MV.TANTO NUSANTARA

Wed, 01 Jan 2025 00:00:00 GMT

ANALISIS KERUSAKAN PLUNGER BARREL TERHADAP KINERJA FUEL INJECTION PUMP PADA GENERATOR DI MV.TANTO NUSANTARA HOTMAN, HOTMAN The smooth operation of a ship is highly dependent on the role of the generator, a machine that converts mechanical energy into electrical energy through the principle of electromagnetic induction according to Faraday's law. On MV. Tanto Nusantara, the generator serves to supply power for navigation equipment, auxiliary pumps, and domestic needs. This research focuses on the performance decline of diesel generator No. 1 (Daihatsu Diesel Yanmar), which was detected through a low exhaust gas temperature in cylinder No. 8 (260O C), indicating combustion failure. The purpose of this study is to analyze the causes of plunger barrel damage and fuel rack jamming in the Fuel Injection Pump (FIP). Using a descriptive qualitative method, data were collected through observation during overhaul, interviews with the Third Engineer, and a study of the engine's manual documents. The results of the study reveal that the damage to the plunger barrel was caused by the component's operating hours exceeding the limit (6,187 hours out of a maximum of 5,000 hours). Additionally, the accumulation of carbon residue caused the fuel rack mechanism to jam, resulting in suboptimal fuel supply. It is concluded that delays in the Planned Maintenance System (PMS) lead to a decrease in injection pressure and generator efficiency. The author suggests disciplined part replacement and routine cleaning to prevent fatal damage.

ANALISIS PERAWATAN HYDRAULIC CRANE UNTUK MENUNJANG KINERJA BONGKAR MUAT DI MV.BULK JAVA

Wed, 01 Jan 2025 00:00:00 GMT

ANALISIS PERAWATAN HYDRAULIC CRANE UNTUK MENUNJANG KINERJA BONGKAR MUAT DI MV.BULK JAVA RAHMAT SANTOSA, ARIF Hydraulic cranes are the main equipment used to support smooth loading and unloading activities on board ships. Optimal hydraulic crane performance is essential to ensure that loading and unloading operations run effectively, safely, and efficiently. However, during sea practice on MV.Bulk Java, several problems were identified, including the failure of the Steel Plate slewing brake and inadequate maintenance of the hydraulic crane, especially on the hose and hydraulic oil filter components. These damages disrupted crane operations and hindered loading and unloading activities. This study aims to determine the causes of Steel Plate slewing brake failure and the inadequate maintenance of the hydraulic crane on MV.Bulk Java. The research used a descriptive qualitative method with data collection techniques through observation, interviews, documentation, and literature study. The results showed that the failure of the Steel Plate slewing brake was caused by delays in spare part replacement and inadequate periodic inspections. In addition, the lack of routine inspections on hoses and filters caused hose leakage and the accumulation of metal particles and dirt in the hydraulic oil tank. Efforts to overcome these problems were carried out through spare part replacement, improving routine maintenance, and consistently implementing preventive maintenance to prevent recurring damage and support smooth loading and unloading operations on board the ship.