Article Per Year (5 Year)
p-Index From 2020 - 2025
0.947
P-Index
This Author published in this journals
All Journal Journal of Materials Exploration and Findings (JMEF) Malcom: Indonesian Journal of Machine Learning and Computer Science Jurnal Indonesia Sosial Teknologi
Mahendra, Mirza
Unknown Affiliation
Computer Science & IT Economics, Econometrics & Finance Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
STRUCTURAL RISK-BASED UNDERWATER INSPECTION (RBUI) AS A COST REDUCTION OF FIELD’s END OF PRODUCTION LIFE Putra, Ivan Fitrian; Soedarsono, Johny Wahyuadi; Mahendra, Mirza; Haidir, Yuki; Purnawarman, Faisal Dwiyana; Sukirna, Iwan; Hernowo, Widi
Journal of Materials Exploration and Findings Vol. 1, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Mubadala Petroleum operates offshore platforms in a southern Makassar Straits that needs to be periodically inspected. The cost for the inspection is massive due to the high cost of mobilization and demobilization of vessels including crew and equipment. In response of a new approach to reduce cost, a Risk-Based Underwater Inspection (RBUI) methodology is developed. This RBUI purpose is to reduce the inspection interval of the offshore platform, from every 2 years to a longer period[1]. There are existing RBUI methodologies, which are already developed and implemented in other companies[5]. Purpose of this paper is to develop further detailed and more accurate RBUI methodology based on data analysis and the agile development method. Offshore platforms condition is dynamic and always changing from time to time. This methodology uses offshore platform design and condition data, including inspection data. All collected inspection data of offshore platform conditions will produce an accurate risk register of the platform. Thus, accurate risk register will give the best inspection interval time, considering its safety and economical benefit. From the RBUI analysis using this method, inspection interval can be deferred from 2 (two) years to range of 4-9 years, depending on the condition and risk of the platform. The operating cost of each platform also reduced up to US$ 670,737 per year.
Structural Integrity Analysis of the Rig Mast Following Repair of Two Diagonal Braces in the Upper Mast Section Padmodwiputra, Rendhatya; Soedarsono, Johny Wahyuadi; Mahendra, Mirza; Satria, Bambang Eka; Arif, Chandra; Suarthana, Eka Juni
Journal of Materials Exploration and Findings Vol. 1, No. 3
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

During a move to the new drilling location, two braces of the upper mast section on a 550 HP oil and gas rig was damaged. When damage is discovered, the rig operating company should conduct a risk analysis related to the damage using the standard used to determine rejection criteria and follow-up repairs. The strength of the rig mast is calculated using Finite Element Analysis (FEA) with initial conditions (before damage occurs) where all braces are installed and extreme conditions where neither brace is repaired. The calculation results are then used to assess the risk of reducing the rig mast strength. The results of the integrity analysis will show FEA of rig mast and the distribution pattern of stress ratio values, which is the ratio between the stress that arises and the allowable stress of the material on the mast parts due to loading.
Implementasi Metode Risk Based Inspection pada Storage Tank di PT. ABC dalam Penentuan Interval dan Metode Inspeksi: Implementation of the Risk Based Inspection Method in Storage Tanks at PT. ABC in Determining Inspection Intervals and Methods Nurbayanah, Siti; Soedarsono, Johny W.; Munir, Badrul; Mahendra, Mirza
MALCOM: Indonesian Journal of Machine Learning and Computer Science Vol. 4 No. 1 (2024): MALCOM January 2024
Publisher : Institut Riset dan Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57152/malcom.v4i1.1088

Abstract

PT. ABC merupakan perusahaan perdagangan olahan minyak dan gas bumi di Indonesia, menekankan pentingnya tangki timbun atau storage tank dalam operasional penyaluran bahan bakar. Meskipun vital, storage tank sering menghadapi risiko korosi karena bahan konstruksi utama, seperti baja (Carbon Steel). Korosi ini dapat menyebabkan kegagalan peralatan, yang berpotensi merusak komponen sistem tangki dan bahkan melepaskan produk ke lingkungan. Dalam konteks Indonesia, regulasi pemerintah (Peraturan No. 32 Tahun 2021) menetapkan bahwa setiap tangki penyimpanan minyak atau gas alam di industri minyak dan gas harus menjalani pemeriksaan teknis dan keselamatan. Penelitian ini fokus pada pemeriksaan berbasis risiko dengan menggunakan API 581 Risk Based Inspection. Pendekatan ini merancang program inspeksi berdasarkan tingkat risiko terkait dengan peralatan. Dari hasil perhitungan dan analisis, disimpulkan bahwa storage tank memiliki tingkat risiko sedang (1D) dengan sisa umur terendah pada peralatan selama 15 tahun (180 bulan) dan corrosion rate maksimum sebesar 0,127 mm/tahun. Nilai-nilai ini masih berada dalam batas nilai risiko yang diperbolehkan, mengindikasikan kebutuhan untuk tindakan pencegahan dan pemeliharaan yang tepat guna memastikan keberlanjutan operasional yang aman dan efisien.
Case Study Of Strength And Calculation Of Remaining Service Life On Rig Equipment Using Pt Xyz's Finite Element Analysis Wicaksana, Satya; Ferdian, Deni; Soedarsono, Johny W.; Mahendra, Mirza
Jurnal Indonesia Sosial Teknologi Vol. 4 No. 11 (2023): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v4i11.803

Abstract

Indonesia is a country that has a variety of natural resources, one of which is oil and gas. In the process of drilling for petroleum, one of the equipment used is a Rig. Age factors can affect the performance of the rig system. Where a structure is depleted beyond ten per cent, then the contribution must be the element undergoing repair or replacement of the defective. The Depletion structure must be repaired. Before operating with new materials, return to the initial condition. Therefore, Regulation Number 32 of 2021, Safety Inspection of Installations and Equipment in Oil and Gas Business Activities, sets the remaining life limit for equipment service. The research method used in this paper refers to the strength of the Rig Tower member, which is calculated using applicable formulas and standards. The final step is a simulation performed using FAE MSC Nastran software. In the calculation, the loading cases of API Spec 4F are used, namely: 1. Max. Rated static hook load of 90.7 tnf (889,463.2 N) with 6 lines, 2. Wind speed of 60 knots with pipe setback. The calculation results can be concluded that the structure of PT XYZ's Rig tower is strong enough against the Maximum Static Hook Load of 889,463.2 N (6 lines), wind load of 60 Knots with pipe setback, rig up load and can last for 30.39 (thirty-thirty-nine hundredths) of years for fatigue, 24 (twenty-four) years for environmental corrosion (Upper Mast) and 20.56 (twenty-fifty-six hundredths) of a year for abrasion corrosion (Lower Mast).
Feasibility Test on Storage Tank At PT ABC Using Asme/FFS-1 Method Purboyo, Dipo Wirarchi; Ferdian, Deni; Mahendra, Mirza
Jurnal Indonesia Sosial Teknologi Vol. 4 No. 12 (2023): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v4i12.817

Abstract

In the operation of oil and gas exploration and exploitation, safety is crucial as it is related to asset safety, environmental safety, and human resource safety. Storage tanks play a crucial role in the process of exploring and exploiting crude oil, serving as storage facilities for liquids in large volumes. These storage tanks are susceptible to corrosion as the materials used in their construction are typically made of steel. Uncontrolled corrosion can weaken or destroy parts of the tank system, leading to holes or structural failures that may release stored products into the environment, resulting in material losses and potential fatalities. One method for assessing the viability of pressure equipment such as pressure vessels, storage tanks, and piping systems is Fitness for Service (FFS). FFS is a quantitative engineering evaluation conducted to demonstrate the structural integrity of a component in operation, even if it has experienced damage, defects, or cracks. Guidelines in FFS procedure manuals can be used to make decisions regarding "continued/repair/replacement" to ensure that components experiencing damage or defects can continue to operate for a specified period. The thickness measurements on the storage tank show that the lowest thickness is found in course 4, with a value of 4.32 mm, while the highest thickness is in the roof at 5.60 mm. The highest corrosion rate is detected in the roof with a value of 0.100 mm/year, and from this corrosion rate value, an estimated remaining life of 20 years for storage tank T-10 is obtained. In assessing the feasibility or Fitness for Services of the storage tank, it still meets the criteria specified by API 579.
Co-Authors Arif, Chandra Badrul Munir, Badrul Deni Ferdian Haidir, Yuki Hernowo, Widi Johny Wahyuadi Soedarsono NURBAYANAH, SITI Padmodwiputra, Rendhatya Purboyo, Dipo Wirarchi Purnawarman, Faisal Dwiyana Putra, Ivan Fitrian Satria, Bambang Eka Soedarsono, Johny W. Suarthana, Eka Juni Sukirna, Iwan Wicaksana, Satya