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All Journal Journal of Marine-Earth Science and Technology Jurnal Teknik Mesin
Dhaifullah, Muhammad
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Automotive Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

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UNJUK KERJA TANGKI TIMBUN T-127 TYPE CONE ROOF KAPASITAS 98.000 LITER DI PPSDM MIGAS CEPU: PERFORMANCE OF T-127 TYPE CONE ROOF STORAGE TANK WITH 98,000 LITER CAPACITY AT PPSDM MIGAS CEPU Dhaifullah, Muhammad
Jurnal Teknik Mesin Vol. 4 No. 1 (2025): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v4i1.6586

Abstract

To keep this tank operating safely, it is necessary to evaluate the performance of this tank. Based on the results of the field work practice evaluation, the minimum thickness of the tank walls and roof was recorded at 0.0283 inches for the first course, 0.0226 inches for the second course, 0.0092 inches for the third course, and 0.09 inches for the roof. Actual thickness measurements showed 0.1693 inches (first course), 0.1614 inches (second course), 0.1417 inches (third course), and 0.1654 inches (roof). The measured corrosion rates varied, namely 0.03 mm/year (first course), 0.05 mm/year (second course), 0.06 mm/year (third course), 0.05 mm/year (first roof), and 0.08 mm/year (second roof). The estimated remaining life of the tank is 52.8 years for the first course, 46.8 years for the second course, 15.9 years for the third course, 42.28 years for the first roof, and 22.97 years for the second roof. Based on the analysis results, Tank T-127 is still feasible to operate with a maximum capacity of 97,998 m³.
SLOW STEAMING IMPACT ON CONTAINER SHIP’S FUEL CONSUMPTION AND CARBON EMISSION, CASE STUDY: SURABAYA-MAKASSAR ROUTE Anjasmara, Haikal; Dhaifullah, Muhammad; Rahmi, Lista Putri Adinda
Journal of Marine-Earth Science and Technology Vol. 5 No. 2 (2024): September
Publisher : Marine & Earth Science and Technology Research Center, DRPM, ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j27745449.v5i2.1009

Abstract

This research investigates the implementation and environmental impact of "slow steaming" as an innovative method in maritime transportation, focusing on the route from Surabaya to Ambon. Utilizing a container ship model with a capacity of 100 TEUs, the study examines resistance data, engine power requirements, and the selection of a main engine aligned with sustainability goals. Slow steaming's influence on fuel consumption and emissions is analyzed, emphasizing cost-effectiveness and environmental benefits. The study extends to sailing route calculations, highlighting reduced oil consumption during slow steaming. Additionally, the research calculates the Energy Efficiency Existing Ship Index (EEXI), crucial for assessing and improving energy efficiency in compliance with International Maritime Organization regulations. The analysis of the container ship scenarios reveals optimal operational conditions and financial performance. In the Round-trip Full Load scenario, peak profitability is achieved at 77% engine load (10.5 knots), yielding Rp50,376,332,800.00 profit. In the Round-trip 1.5 Load scenario, maximum profit occurs at 54% engine load (9.5 knots), resulting in Rp21,245,220,000.00 profit. Bunkering costs, constituting 30-50% of the total cost, significantly influence economic dynamics. The Energy Efficiency Existing Ship Index (EEXI) peaks at 11 knots (31,166.06552) and reaches a minimum at 9.5 knots (22,518.17557). These insights offer guidance for optimizing maritime operational parameters and financial outcomes.
Co-Authors Anjasmara, Haikal Rahmi, Lista Putri Adinda