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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Mekanika: Majalah Ilmiah Mekanika
Yulianti, Serliana
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Earth & Planetary Sciences

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Analysis of the Application of the Rest Hour Maritime Labor Convention 2006 on MV. Pan Energen Crews to Improve Working Conditions With Analytical Hierarchy Process (AHP) Method Aprillia, Namira; Mulyatno, Imam Pujo; Mursid, Ocid; Yulianti, Serliana
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 20, No 3 (2023): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v20i3.58807

Abstract

The contribution made by the crew is very important for the welfare of the company and the performance on board. But their well-being has not been paid enough attention in the maritime world. Heavy workloads and working hours and lack of implementation of rest hours trigger human error and are prone to fatigue. The implementation of the Maritime Labor Convention 2006 has contributed significantly to the improvement of the working conditions of the crew.  The purpose of this study is to determine the right criteria and strategic solutions in helping to improve the application of rest hours to crew members. Criteria and strategy solutions were obtained through the Analytical Hierarchy Process (AHP) and Expert Choice methods are used as supporting software for calculations. The stages of observation, interviews, dissemination of questionnaires, modeling and choice are processes carried out in data processing.  Rest time criterias with a weight value of 0.534 and an inconsistency value of 0.004466 was the main criteria chosen by the respondents. Meanwhile, Sleep Duration is a strategy solution chosen as the top priority with the weight value of 0.220 with an inconsistency value of 0. The results of the two inconsistencies each have a CR value of < 0.1 indicating that the results of rest hour application data processing based on the 2006 Maritime Labor Convention can be declared consistent and accurate.
Enhancing Lubrication System Efficiency in Marine Diesel Engines with Centrifugal Separators - a Case Study Of LPG/C Arimbi: Technical and Cost-Effective Perspectives Tuswan, Tuswan; Rasyad, Muhammad Fuad; Budiarto, Untung; Mursid, Ocid; Tanzani, Andra; Yulianti, Serliana; Ismail, Abdi; Ariesta, Rizky Chandra
Mekanika: Majalah Ilmiah Mekanika Vol 23, No 1 (2024): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v23i1.83063

Abstract

The lubrication system in an engine is critical for reducing friction between components, preventing wear, reducing heat, protecting components from deposits, and sealing. Maintaining and extending the life of lubricants is crucial for lowering lubricant usage costs. A centrifugal separator is an auxiliary machine that cleans and separates two insoluble liquids with different densities. This study aims to evaluate the efficiency of lubricant life, lubricant usage cost savings, and return on investment time for a centrifugal separator. The study uses a case study of LPG/C Arimbi, where a centrifugal separator has helped maintain lubricants, prevent wear, and separate fuel and free water from lubricants. The centrifugal separator can also maintain Total Base Number (TBN) and viscosity values by filtering solid particles or wear elements up to a size of 0.5 µm. The study found that the difference in lubricant life was 11,780 hours, and the cost savings obtained were IDR 186,456,666 per year. The return on investment time for purchasing a centrifugal separator is three years and two months, assuming an average working hours of LPG/C Arimbi every year of 3,660 hours. Therefore, using a centrifugal separator can improve the efficiency of lubricant life and reduce lubricant usage costs, providing a positive return on investment in the long run.
Co-Authors Aprillia, Namira Ariesta, Rizky Chandra Imam Pujo Mulyatno Ismail, Abdi Ocid Mursid Rasyad, Muhammad Fuad Tanzani, Andra Tuswan Tuswan Untung Budiarto