Article Per Year (5 Year)
p-Index From 2021 - 2026
2.255
P-Index
This Author published in this journals
All Journal Jurnal Teknik ITS Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Pengabdian Pada Masyarakat IJOCE (International Journal of Offshore and Coastal Engineering) International Journal of Marine Engineering Innovation and Research Jurnal Pengabdian Pada Masyarakat Sewagati
Yoyok Setyo Hadiwidodo
Institut Teknologi Sepuluh Nopember
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

Published : 22 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 22 Documents
Search

 1   2   3 
Analysis of Sling Tension on the Lifting Process of Riser Support Jacket on Installation Phase Rifki Mahardi; Yoyok Setyo Hadiwidodo; Rudi Walujo Prastianto
International Journal of Offshore and Coastal Engineering Vol. 8 No. 1 (2024)
Publisher : Department of Ocean Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25800914.v8i1.20463

Abstract

The increasing exploration and exploitation of oil and gas in the deep sea has led to an increasing need for new technologies to support these activities. In this study, a riser support structure in the form of a jacket is used to support the riser so that the stress can be minimized. Like the jacket structure in general, this riser support structure can be installed using various methods, including the lifting method. This study discusses the stress in the sling when the lifting process is carried out. The crane barge used in this study was first modeled using MOSES Software to determine how the barge moves when the lifting process is carried out. The result of the barge movement analysis is a Response Amplitude Operator (RAO). In the sway, heave and roll movements, it is known that the maximum value is at 90° heading, while in other movements, it varies. The riser support structure is modeled using SACS Software to determine the center of gravity, then the sling length is calculated. From the calculation, the sling length at lifting point 1 is 34,10 m, lifting point 2 is 34,14 m, lifting point 3 is 36,08 m, and lifting point 4 is 36,10 m. The lifting model is input into the OrcaFlex Software to analyze the sling stress. The analysis was performed in five loading directions, namely 0°, 45°, 90°, 135°, and 180°. The maximum stress occurs in the loading direction of 90°, with the result that sling 1 is 1932,70 kN, sling 2 is 1905,65 kN, sling 3 is 1161,64, and sling 4 is 1193,65 kN.
Burst Pressure Analysis on Corroded Pipeline Using Finite Element Method Mahadi Yahya Sormin; Yoyok Setyo Hadiwidodo; Nur Syahroni
International Journal of Offshore and Coastal Engineering Vol. 8 No. 2 (2024)
Publisher : Department of Ocean Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25800914.v8i2.4877

Abstract

The oil and gas industry includes exploration, extraction, production or processing, and transportation. One of the important activities in the oil and gas industry is the hydrocarbon transportation system. The most commonly used hydrocarbon transportation facility is the subsea pipeline. Pipes operating in a marine environment can easily corrode. Corrosion will cause a metal loss on the pipe surface and worsen the strength of the pipe. The thinning of the pipe surface due to corrosion will result in localized holes of varying depths and uneven shapes on the outer and inner surfaces. A burst pressure will occur if the internal pressure in the pipe with corrosion defects exceeds the allowable internal pressure limit. Therefore, to prevent burst pressure, it is necessary to evaluate the residual strength of the pipe in order to determine whether the defective pipe with working pressure can continue to operate safely or not. The internal pressure value calculation results are as follows: until the pipe fails, it is considered to burst using an FEA of 19.42 MPa. Meanwhile, the internal pressure value using standard codes DNV-RP-F101 is 18.76 MPa. For the effect of variations in the dimensions of the corrosion defect size, the most influential is the length and depth of the defect due to a decrease in the graph that does not fluctuate. The percentage differences between the failure pressure values resulting from rectangle and semi-ellipsoidal corrosion defects and the burst pressure values from the burst test experiments are 0.61% and 0.15%, respectively.
Co-Authors Abima Aunur Rochman Abizar Giffari Achmad Choiruddin Bambang Widjanarko Otok Dendy Satrio Diah Puspito Wulandari Dyah Ayu Puspitorini Elyas Nur Fridayana Elysa Nensy Irawan Handayanu Handayanu Harmin Sulitiyaning Titah Hasan Ikhwani Herman Pratikno, Herman Iftinaniffah Qonitah Ilham Kharisma Prayoga Iqbal Gayuh Raharjaning Mukti Sumarsono Ismail, Abdi Jerry D. T. Purnomo Madi Madi Madi Madi Madi Mahadi Yahya Sormin Muhammad Catur Nugraha Muhammad Rizky Syarifudin Mukhtasor Mukhtasor Nabielah Khiyaarul A-immah Nur Syahroni Purhadi Purhadi Ray Adam Baihaqi Raymond Habinsaran Aruan Rifki Mahardi Rifki Mahardi Rochani, Imam Rosyid, Daniel Mohammad Rudi Walujo Prastianto Safira Dwi Anggraeni Santi Wulan Purnami Shade Rahmawati Shofi Andari Sholihin Sujantoko Satrio Tuswan Tuswan Widdi Umari Wimala Lalitya Dhanis Yeyes Mulyadi Yusapril Hagie Syamsun Nahar