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All Journal Infotekmesin Jurnal Konversi Energi dan Manufaktur Journal of Marine-Earth Science and Technology Formosa Journal of Science and Technology (FJST)
Nugroho, Priyambodo Nur Ardi
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Aerospace Engineering Humanities Automotive Engineering Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Finite Element-Based Structural Evaluation of a Rescue Boat Crane Mount on LCT 153 Vessel Rean, Everin Shafa Ghaitsa; Nugroho, Priyambodo Nur Ardi; Sofia, Emy
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 2 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.2.3

Abstract

Rescue operations onboard marine vessels rely on effective and reliable deployment mechanisms for rescue boats, particularly in emergency scenarios. Cranes are commonly installed to assist in lowering rescue boats, but their performance depends greatly on the strength and reliability of their mounting systems. This study investigates the structural performance of a rescue boat crane mounting system on an LCT 153 vessel using finite element analysis. The problem addressed in this research is the lack of quantitative data on how different crane configurations affect the structural integrity of their mounting base under operational loads. Two crane models with different outreach and load specifications were assessed to identify the most structurally efficient option. Stress distribution and deformation were simulated using 3D models and meshed at various sizes to ensure convergence accuracy. The results revealed that the configuration with a 6-meter outreach generated lower stress (19.69 MPa) and deformation (0.004 mm), while the 7-meter alternative showed higher values. The findings contribute to safer and more efficient crane mounting designs and serve as a reference for shipyards in selecting appropriate equipment based on load performance and structural reliability.
APPLYING DESIGN ALTERNATIVE APPROACH TO OPTIMIZE COMFORT, SAFETY, AND COST-EFFECTIVENESS IN THE REDESIGN OF ACCOMMODATION ROOMS ON THE SHIP KM TAREX 2 Mustain, Achmad Difa Khoirul; Wahidin, Aang; Soelistijono, Rachmad Tri; Nugroho, Priyambodo Nur Ardi; Ashari, Azza Nuha Salma
Journal of Marine-Earth Science and Technology Vol. 5 No. 1 (2024): April
Publisher : Marine & Earth Science and Technology Research Center, DRPM, ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j27745449.v5i1.1067

Abstract

In late December 2021, the ship KM Tarex 2, owned by PT. Pelayaran Mandala Sejahtera Abadi, underwent its annual docking at PT. Tambangan Permai Raya. During this time, the ship was found to be in a state of disrepair, including its accommodation rooms. The ship's current condition, feedback from stakeholders, and financial considerations served as the catalyst for a comprehensive interior redesign, with a primary focus on enhancing comfort, safety, and economy. The interior redesign of the accommodation spaces on the ship KM Tarex 2 involved the exploration of two alternative design concepts. These concepts centered around the Owner's Room, Crew's Room, Messroom and Life Jacket Storage. Alternative Design 1 adopted a Contemporary Concept, while Alternative Design 2 embraced a Modern Minimalist concept. The selection process for these designs involved soliciting feedback from a panel of 18 individuals, consisting of 12 representatives from PT. Pelayaran Mandala Sejahtera Abadi, 3 individuals from PT. Tambangan Permai Raya, and 3 crew members of the ship KM Tarex 2. Ultimately, Alternative Design 1 garnered an average approval rating of 67% across all rooms, surpassing Alternative Design 2 in preference. The selected design alternatives were evaluated for compliance with regulatory standards, achieving a 100% compliance rate for each room and an average comfort rating of 40%. Additionally, the chosen materials, as determined through a Google Form questionnaire, included ALUMETAL brand ACP Materials for room lining and ceiling, along with Henan Fortovan brand LVT for ship deck covering. These materials received an average approval rating of 61%. Economically, the analysis of material costs demonstrated that the project could be undertaken without exceeding the ship's annual income, ensuring financial feasibility.
Kajian Eksperimen Pengaruh Variasi Perubahan Sudut Kincir terhadap Kinerja Paddle Wheel Aerator Mustaghfirin, Anis; Novianarenti, Eky; Abid Al Fatih, Muhammad; Nugroho, Priyambodo Nur Ardi; Sasmita Aji Pambudi, Dwi; Arum Wulandari, Dyah
Infotekmesin Vol 14 No 1 (2023): Infotekmesin: Januari, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i1.1652

Abstract

The main problem discussed in this study is the effort to improve the quality of shrimp pond water, especially the low dissolved oxygen levels by modifying the angle of the aerator wheel. The results showed that dissolved oxygen (DO) levels were very important in shrimp pond culture and that the paddle wheel aerator was a useful tool in intensive aquaculture systems because it could produce DO as needed. The study used a model designed using Solidworks software and tested at a scale of 1:10 with 3 variations of angles (15°, 35°, and 55°) at each wheel angle. The test results show that the angle variation affects the rotational speed and DO production, with the highest rotational speed and DO production achieved at an angle variation of 55°. However, the best parameters for the aerator were found at a variation of the wheel angle of 35° and a rotational speed of 300 rpm, because it produced the highest dissolved oxygen with relatively low power.
Analisis Kekuatan dan Potensi Resonansi pada Pondasi Diesel Generator Menggunakan Metode Elemen Hingga Qoniah Ardelia; Nugroho, Priyambodo Nur Ardi; Agung Prasetyo Utomo
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2049

Abstract

The ship’s electrical system heavily relies on a safe and reliable diesel generator foundation. However, many foundation designs currently used in the industry have not been comprehensively validated against classification standards, nor analyzed for resonance potential and fatigue life. This study aims to develop a diesel generator foundation design that complies with ship structural safety standards based on Lloyd’s Register (LR) regulations. The methods used include 3D modeling, structural and resonance analysis using the Finite Element Method (FEM), and validation through manual calculations. The results show that the initial design does not meet safety standards, while the LR-based design yields a maximum stress of 164.01 MPa and a maximum deformation of 0.99981 mm, with a fatigue life reaching 28 years. Both designs indicate no potential for resonance. This study recommends the LR-based foundation design as the optimal solution to ensure structural integrity, long service life, and compliance with maritime safety regulations.
Accidents Analysis in Sugar Factories: Causes Using Government Regulation and Human Factor and Classification System (HFACS) Santoso, Edi; Kurniasih, Dewi; Nugroho, Priyambodo Nur Ardi
Formosa Journal of Science and Technology Vol. 3 No. 9 (2024): September 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/fjst.v3i9.10996

Abstract

The Sugar Factory uses more than 150 pieces of equipment in production process. With so many tools, the possibility of accidents also very large, especially because of the age of mechine and equipment. On July 22 2022, an accident occurred which resulted 1 (one) person dying as a result of being hit by a lifting beam and sugarcane scale due to a broken wire rope. Investigation and analysis of the causes of accidents as well as follow-up actions must be carried out, because the production process must continue. This research aims to analyze accidents that occur based on human factors using Government Regulation and Human Factor Analysis and Classification System (HFACS) approach. Government regulations are used to identify the types of accidents with a major impact on lost work hours and fatalities. Government regulations are used to determine the types of accidents that have a major impact on lost work hours and deaths. Using data from sugar factories and interview results, this study shows that accidents with the greatest impact are caused by lifting equipment. Using the Human Factor And Classification System (HFACS) method to analyze the 6 accidents, the results show that at level 1, the biggest causes of accidents are at the sub-level decision error, skill-based error, perceptual error and routine violation. At level 2, the biggest causes of accidents are at the sub-level technological environment and personal readiness. While at levels 3 and 4, Failed to correct problem and supervisory violation have the largest percentage at level 3 and resource management at level 4. The conclusion shows that there are still various problems from the human factor to implementate occupational safety which could potentially lead to accidents.
Co-Authors Aang Wahidin Abid Al Fatih, Muhammad Arum Wulandari, Dyah Ashari, Azza Nuha Salma Dewi Kurniasih Edi Santoso Eky Novianarenti Mustaghfirin, Anis Mustain, Achmad Difa Khoirul Qoniah Ardelia Rean, Everin Shafa Ghaitsa Sasmita Aji Pambudi, Dwi Soelistijono, Rachmad Tri Sofia, Emy Utomo, Agung Prasetyo