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Desy Lusiyana
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Journal Of Engineering Sciences (Improsci)
Published by Ann Publisher
ISSN : 30323452     EISSN : 30317088     DOI : https://10.62885/improsci.v1i1
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Journal Of Engineering Sciences (Improsci) merupakan peer-reviewed jurnal yang mempublikasikan artikel-artikel ilmiah dalam bidang industri. Artikel-artikel yang dipublikasikan di Jurnal Improsci meliputi hasil penelitian ilmiah asli (prioritas utama), artikel ulasan ilmiah yang bersifat baru (tidak prioritas), serta hasil kajian dalam bidang industri.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 65 Documents
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Mapping Potential Musculoskeletal Disorders (MSDs) Based on Ergo-MMH in Manual Material Handling of TBS Loading-Unloading Workers Setiawan, Heri; Susanto, Sani; Rinamurti, Micheline; Alfian, Achmad; Pratama, Yohanes Dicka; Budiarto, Dominikus
Jurnal Improsci Vol 3 No 1 (2025): Vol 3 No 1 August 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i1.855

Abstract

Background, The prospect of oil palm plantations is currently rising significantly to become a favourite business. However, the work activities of TBS loading-unloading workers are still performed without paying attention to ergonomic aspects and have the potential for MSDs. Aim: To map the potential MSDs of TBS loading-unloading workers, serving as a basis for improving the work system. Methods: The inclusion sample of TBS loading-unloading workers was observed and interviewed using the NBM questionnaire to diagnose potential MSDs resulting from MMH work activities. Ergo-MMH was applied to provide recommendations for improving work system design based on the AT and SHIP approaches. Results: The primary causes of MSDs are unnatural working attitudes and excessive muscle tension resulting from work systems that are not designed per the limitations of workers. Twelve body parts are directly involved in MMH activities. Conclusions, Possible MSDs on the back, left and right shoulders, right and left upper arms, right forearm, left and right wrists, left and right hands, and upper and lower neck. Implication, Ergo-MMH-based mapping of potential MSDs in manual material handling activities of TBS loading-unloading workers for the academic world; research, theory development, and education. For society, public awareness, community development, and social support. For the nation and state, work safety, economic growth, and public health. For the international community, international collaboration, standards development, and technology development
Preventive Maintenance Of The Cooling System On The Main Engine On The Mt. Ratu Zainab Nalle, Carles YA; Ashar , Ashar
Jurnal Improsci Vol 3 No 1 (2025): Vol 3 No 1 August 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i1.856

Abstract

Background. The main drive engine is an energy conversion engine that converts thermal energy resulting from chemical reactions between fuel and air into mechanical energy. The process of burning the fuel occurs due to high air pressure in the combustion chamber. Aims. This research was conducted on the MT ship. Ratu Zainab aims to determine the best practices for preventive maintenance of the cooling system on the main engine and identify the factors that impact her work on the MT ship. Queen Zainab. Methods. The method used is qualitative descriptive. The study's results highlight the importance of regular maintenance for the freshwater cooling system to ensure optimal engine performance. The main steps include preparing maintenance schedules, creating checklists, and conducting periodic inspections. Result. Common problems that often occur include a lack of suction in the cooling pump, decreased impeller performance, dirt accumulation in the seals, and leaks in the intercooler cover, thus affecting the cooling system of the main engine on the MT. Ratu Zainab's ship. Daily and monthly maintenance is recommended to detect damage early. Factors that affect the performance of the cooling system include corrosion, clogging of the cooler by dirt, and wear and tear on the standard components. Proper preventive maintenance can reduce damage, improve operational efficiency, and extend the life of machine components. Cooling system failure can lead to overheating, reduced engine efficiency, and severe component damage. Therefore, implementing preventive maintenance is a strategic step to prevent unexpected damage. Conclusion. This research highlights the importance of proactive maintenance and a thorough understanding of seawater cooling systems to ensure the optimal and safe operation of ships. Implementation. Thus, implementing proper preventive maintenance on the main engine cooling system is a crucial effort in ensuring the safety, efficiency, and reliability of the overall ship operation.
Work System Improvement in the Production Process Station Area PT SMS Using Macro Ergonomics and Design (MEAD) to Increase Productivity Setiawan, Heri; Susanto, Sani; Rinamurti, Micheline; Alfian, Achmad; Pratama, Yohanes Dicka; Budiarto, Dominikus
Jurnal Improsci Vol 3 No 2 (2025): Vol 3 No 2 October 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i2.939

Abstract

Background. PT SMS produces bottled drinking water (amdk) in gallons and cups with Vit and Forme brands for gallon packaging and Airnes, Forma, and OK Oce brands in cup packaging. In identifying the problem at PT SMS, it was found that the work system is not well-designed and lacks ergonomics at several workstations, which has an impact on achieving less than optimal daily productivity. The output per work shift set by the company is 2,100 gallons and 3,150 boxes for cup packaging, but in fact, it can only produce approximately 2,050 gallons and 3,000 boxes. Aim. Analyze the factors that cause the work system to be less effective and less ergonomic. The formulation of work system factors encompasses physical work environment factors, equipment, infrastructure, machinery, workload factors, and organisational factors. Methods. The Macro Ergonomic Analysis and Design (MEAD) method is used to identify factors that affect the work system and then implement improvements and design changes based on the identified factors. Results. Physical work environment factors and organisational factors are problems within the work system at PT SMS, as the workspace designated for the production workflow lacks ergonomic support for employees' postures while working, and task management is inadequate. The machinery has not been crafted based on the anthropometric measurements of the workers. Oversight is absent for the work being done, and the standard time required for the production process has yet to be established. So that it increases productivity per work shift at PT. SMS is not optimal and experiences over time. Conclusions. Redesign of physical work environment facilities, scheduling of rest periods, and organisational factors through supervision from PT SMS resulted in output per shift meeting the standards set by the company.. Implication. The application of MEAD can identify factors that cause suboptimal productivity. Redesigning ergonomic physical work environment facilities, scheduling rest periods, and supervisory organisational factors within the company have an impact on optimising productivity, as measured by the output per shift set by the company
Development of an Employee Attendance Management Information System Based on Web and Mobile with Location-Based Service Rizky Prasetyo, Aria; Ikrimach, Ikrimach
Jurnal Improsci Vol 3 No 3 (2025): Vol 3 No 3 December 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i3.947

Abstract

Background. Personnel attendance administration activities at the Karanganyar Regency Education and Culture Office have been integrated with the central system for civil servants, but the attendance method for non-civil servants is not available in a structured manner, so it risks reducing data integrity, being inaccurate, and not allowing real-time monitoring. Aims. This research aims to develop a web-based and mobile-based employee attendance management and scheduling application using Location Based Service in a case study at the Karanganyar Regency Education and Culture Office. Methods. The application that was built provides a presence feature based on the Global Positioning System and a camera for proof of presence photos. Location-based service is used to validate the location of employees when attending to match the predetermined work area. The system is designed using a client-server architecture with a Laravel-based web application for admins, a mobile application for employees, and a centralized database to facilitate data management. Result. The evaluation of the system's functionality is conducted using the black box testing method to assess the suitability of the output results for the specified use scenario. Conclusion. The test results indicate that all application functions meet user needs. Consequently, the developed system is expected to enhance efficiency, ensure data integrity, and offer a more modern and integrated presence solution in the administrative process of non-civil servant personnel within the Karanganyar Regency Education and Culture Office.
Assessing Waste Potential and Greenhouse Gas Emissions from Existing Waste Management Systems: A Case Study of Palembang City South Sumatera of Indonesia Setiawan, Heri; Bangun, Ferdinandus; Budiarto, Dominikus; Pratama, Yohanes Dicka
Jurnal Improsci Vol 3 No 3 (2025): Vol 3 No 3 December 2025
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v3i3.965

Abstract

Background, Palembang City South Sumatera of Indonesia faces serious waste challenges, generating about 983-1,200 tons daily, 35% plastic and under 10% recycled. Improper disposal drives methane emissions and climate impacts. This study explores low-cost waste-to-energy (WtE) strategies to cut emissions, support a circular economy, and empower communities through sustainable, participatory waste management. Aim, This study analyzes Palembang’s waste generation and GHG emissions to support sustainable and efficient waste management strategies. Methods, This study used mixed methods to assess Palembang’s waste management and emissions, conducted from July-October 2025, data from key stakeholders were analyzed using IPCC Tier 1 Guidelines to compare baseline and intervention scenarios for sustainable community solutions. Results, The analysis revealed that Palembang City South Sumatera of Indonesia generates approximately 1,000 tons of municipal solid waste per day, with organic waste (56%) and plastic waste (24%) as the dominant fractions. Current waste treatment processes, mainly open dumping and limited composting, result in an estimated carbon emission of 420-460 tons CO₂-eq per day. Scenario modeling indicated that implementing a low-cost waste-to-energy (WtE) system and community-based segregation programs could reduce emissions by up to 55%, while generating additional energy potential of 7-9 MWh per day. These findings demonstrate the significant potential of an integrated waste management approach to simultaneously mitigate greenhouse gas emissions and enhance energy recovery in Palembang. Conclusions, Palembang generates 983-1,200 tons of waste daily, mostly food (40.8%) and plastic (20.4%), with 60% sent to Sukawinatan and 40% to Kramasan landfills. Management still relies on open dumping, causing methane emissions of 2,352.9 tons (65,888.2 tons CO₂-eq) valued at about IDR 1.97 trillion. These results underscore the need for integrated, sustainable waste-to-energy (WtE) solutions. Implication, The study guides policymakers in developing low-cost, sustainable waste management through community-based waste-to-energy (WtE) initiatives that reduce emissions and support a circular, resilient city.

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