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INDONESIA
Journal Mechanical Engineering
Published by Politeknik Negeri Ambon
ISSN : -     EISSN : 29884977     DOI : https://doi.org/10.31959
Core Subject : Engineering,
Industrial & Manufacturing Engineering Mechanical Engineering
Manufaktur, Perawatan, Otomotif, Teknik Produksi Migas dan Teknologi Rekayasa Sistem Mekanikal Migas
Arjuna Subject : Teknik (semua kategori) - Mekanik Material
Articles 108 Documents
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PENGARUH PENCAMPURAN RUMPUT LAUT DENGAN POLIMER XANTHAN GUM TERHADAP VISKOSITAS DAN ADSORPSI Hattu, Valentyn Paul Bodywein; Pellu, Deny Ismail
Journal Mechanical Engineering Vol. 2 No. 1 (2024): April
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i1.2583

Abstract

Polymer injection is an EOR method using a polymer solution to increase oil recovery by decreasing the oil-water mobility ratio by increasing the viscosity of the injection water. The purpose of this study was to analyze the effect of adding seaweed to xanthan gum polymer at various concentrations. The influence that is analyzed in this study is the viscosity test and the adsorption of the solution. From the research that has been carried out, it can be concluded that the best polymer viscosity is a polymer mixture of xanthan gum and seaweed, while based on the adsorption test, xanthan gum polymer is the best.. Keywords: Polymer Flooding, EOR, Viscosity, Adsorption
ANALISIS PERUBAHAN KETEBALAN PIPA AKIBAT PENGARUH KOROSI DAN SISA UMUR PAKAI PIPA DI PLTD NAMLEA KABUPATEN BURU Pratama, Ahmad Zulfikri; Pattikayhattu, Erwin B.; Effendy, Edison
Journal Mechanical Engineering Vol. 2 No. 1 (2024): April
Publisher : Jurusan Teknik Mesin

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Abstract

In modern industry, pipelines play an important role, especially in the oil and gas sector. Pipes are susceptible to corrosion, especially those in aggressive environments such as PLTD Namlea, which is directly adjacent to the coast. Corrosion, as a natural process of metal degradation, is inevitable, but it can be controlled to extend the life of the pipe. This study measured the thickness of the pipes at PLTD Namlea using Ultrasonic Testing (UT) to determine the corrosion rate and remaining service life. Based on measurements, the minimum thickness of pipes at various measuring points (Measuring Points / MP) still meets the API 574 standard, which must not be less than 1.8 mm. The average corrosion rate ranges from 0.336 to 0.358 mm/year. These values affect the rate of degradation of the pipe and the remaining service life, which ranges from 5.5 to 6.1 years at various measurement points. Pipes that have a higher corrosion rate will have a shorter remaining service life. Overall, the pipeline at PLTD Namlea is still laid. Keywords: Pipe, Corrosion Rate, Remaining Life
ANALISA VARIASI KAMPUH DAN ARUS LISTRIK LAS PADA MATERIAL BAJA KARBON MENENGAH TERHADAP KEKUATAN TARIK DAN STRUKTUR MIKRO SAMBUNGAN LAS Lasamahu, Stevanno B D; Huka, Graciadiana I; Nanulaitta, Nevada. JM
Journal Mechanical Engineering Vol. 2 No. 1 (2024): April
Publisher : Jurusan Teknik Mesin

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Abstract

This study aimed to investigate the effects of weld groove variations and welding current on the tensile strength and microstructure of medium carbon steel joints using FCAW (Flux-Cored Arc Welding). The researcher employed a quantitative approach with an experimental method. The specimens used in this research include FCAW with V-groove and 90 A current, FCAW with V-groove and 70 A current, FCAW with X-groove and 70 A current, FCAW with X-groove and 90 A current, raw material specimens, and microstructure specimens. The data analysis reveals that the highest average tensile stress value among the welded specimens was 463.50 MPa, observed in the FCAW X-groove with 90 A current specimen, while the FCAW V-groove with 70 A current specimen showed the lowest value at 295.1 MPa. Regarding the strain values, the FCAW X-groove with 90 A current specimen had the lowest average strain of 4.15%, whereas the FCAW V-groove with 70 A current specimen had the highest at 5.36%. In terms of microstructure, the FCAW V-groove with 70 A current specimen exhibited martensite, pearlite, and ferrite structures in the weld zone, and ferrite and pearlite structures in the heat-affected zone (HAZ) and base metal. For the FCAW X-groove with 90 A current specimen, pearlite and ferrite structures were found in the weld zone, HAZ, and base metal. Keywords: Carbon Steel, Weld Groove, Welding Current, Tensile Test, Microstructure
OPTIMASI HYDRULIC PUMP UNIT (HPU) UNTUK MENINGKATKAN LAJU PRODUKSI PADA SUMUR AGL LAPANGAN X Nikijuluw, Albert K J Vig; Sriani , Tun; Lekatompessy, Roy R.
Journal Mechanical Engineering Vol. 2 No. 1 (2024): April
Publisher : Jurusan Teknik Mesin

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Abstract

Optimizing Hydraulic Pump Units (HPUs) is a crucial step in increasing oil production rates at the AGL well in field X. HPUs are used to lift crude oil from production wells to the surface using hydraulic pressure. This research focuses on analyzing and improving various operational aspects of HPUs to address challenges such as hydraulic leaks, component wear, and control system failures. The methods employed include preventive maintenance, the application of advanced technology for real-time monitoring, and the adjustment of operational parameters to find the optimal configuration. The study results show that with proper optimization, production rates can be significantly increased, downtime can be reduced, and equipment lifespan can be extended. Continuous monitoring and performance evaluation of HPUs after implementing optimization also provide valuable insights for further improvements. This research is expected to offer practical guidance for the oil and gas industry in implementing HPU optimization to achieve more efficient and productive operations. Keyword : pump, oil and gas, production flow rate, hydraulic pressure, AGL filed well X
ANALISIS KETEBALAN DAN SISA UMUR PAKAI PADA PIPA PENYALUR AIR RADIATOR MENUJU KE ENGINE DI PLTMG AMBON PEAKER 30 MW Away, Hyzkia; Effendy, Edison; Lilipaly, Eka R.A.P.
Journal Mechanical Engineering Vol. 2 No. 1 (2024): April
Publisher : Jurusan Teknik Mesin

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Abstract

Ambon Peaker 30 MW. These pipes are prone to corrosion, especially if not protected by a coating, which leads to thickness reduction and shortens the operational lifespan of the pipes. The thickness measurement will be carried out using an Ultrasonic thickness gauge to determine the corrosion rate and the remaining life of the pipe. The standards referenced in data collection are the American Petroleum Institute (API) 570 and the American Society of Mechanical Engineers (ASME) B31.4. The research will be conducted by the author from August 28, 2024, to August 30, 2024, at PLTMG Ambon Peaker 30 MW, Salahutu District, Central Maluku Regency, Maluku Province. The research results show that the minimum thickness reduction indicates a corrosion rate of 0.228 mm/year at Thickness Measurement Location (TML) 17 and 18, while the maximum thickness reduction shows a corrosion rate of 0.564 mm/year at Thickness Measurement Location (TML) 3. Pipes with lower corrosion rates have a remaining life of 5.4 years, while pipes with higher corrosion rates have a remaining life of up to 31.9 years. In conclusion, coating protection is essential to reduce the corrosion rate and extend the service life of the pipes. Keywords: Pipe thickness, Corrosion rate, Pipe remaining life, Ultrasonic thickness gauge.
Evaluasi Kinerja Pompa Sentrifugal NO. 3 Pada RPKS II Di PPSDM Migas Cepu Salmon, Maurenzia; Pattykayhattu, Erwin. B.; Pattiasina, Nanse. Henny.
Journal Mechanical Engineering Vol. 2 No. 1 (2024): April
Publisher : Jurusan Teknik Mesin

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Abstract

The research objectives are to identify the performance efficiency of Centrifugal Pump No. 3, determine the headloss value, and compare the available NPSH with the required one. The method used is quantitative with an experimental approach to collect pump performance data. The results showed that the pump performance efficiency was 9.9%, headloss was 0.003521 m, total pump head = 9.19 m, hydraulic power = 0.49 kW, pump power = 5.1 kW, available NPSH was 9.92 and the required NPSH was 2.3 m. The application of preventive maintenance includes identifying components experiencing wear and tear, periodic maintenance of suction and discharge piping, routine purging to reduce head losses and checking the condition of the pump suction to anticipate cavitation factors. The application of preventive maintenance includes identifying components that are experiencing wear and tear, periodic maintenance of suction and discharge pipe installation, routine flushing to reduce head losses and inspection of pump suction conditions to anticipate the cavitation factor. Keywords: centrifugal pump, PPSDM, head loss, preventive maintenance
ANALISIS LAJU KOROSI ROOFTOP TANGKI 100 KL YANG TERPAPAR LANGSUNG DENGAN AIR LAUT DI PLTD NAMLEA KABUPATEN BURU Papilaya, Wendy Juita; Pattikayhattu, Erwin B,; Pellu, Deny Ismail; Latumaerissa, Hendrik S
Journal Mechanical Engineering Vol. 2 No. 3 (2024): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i3.2886

Abstract

Indonesia, as a tropical country surrounded by water, faces serious corrosion problems due to high rainfall and the presence of seawater containing corrosive salts. Metal materials, especially in storage tanks in the oil and gas industry, are very susceptible to this damage, so they require special attention to maintain their integrity.To evaluate the condition of the tank, an inspection was carried out using the Non-Destructive Testing (NDT) method with an Ultrasonic Thickness Gauge according to API 653 and 575 standards. In the August 2024 measurement, the 100 kl tank showed good condition with varying thicknesses. However, the rooftop section, despite having the highest thickness, recorded a higher annual corrosion rate than other sections.Analysis shows that while the thickness of the material can extend the service life of the tank, the high corrosion rate has the potential to accelerate the failure. The Rooftop is estimated to have a remaining service life of 6.9 years, lower than the rest of the course. This confirms that corrosion management and monitoring are essential to maintain the integrity of the tank and prevent more serious failures. Keywords : Tank, Rooftop, Corrosion, Non-destructive testing
ANALISA PENGARUH VARIASI KECEPATAN PUTARAN DAN FEED RATE PROSES PEMBUBUTAN TERHADAP KEKASARAN PERMUKAAN DAN LAJU KOROSI BAJA KARBON SEDANG Ramadhan, Fahri; Matheus, J; Nanulaita, Nevada. JM; Malakauseya, J. J
Journal Mechanical Engineering Vol. 2 No. 3 (2024): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i3.2887

Abstract

a machine tool used to remove part of a rotated object is called a lathe. In the turning process, surface roughness often occurs on the workpiece, this roughness will later have an impact on the corrosion rate. In the oil and gas industry, corrosion is something that is very undesirable, because it can cause losses and also slow down a production process. This study aims to obtain the value of surface roughness and corrosion rate on medium carbon steel through the turning process with variations in rotation speed, namely at Rpm 350 and Rpm 460 with Vf 17 mm/minute, 21 mm/minute, 23 mm/minute, and 28 mm/minute. The results of this study are that the rotation speed and feed rate affect the roughness value on the surface of medium carbon steel, the average for Rpm 350 with Vf 17 the Ra value is 6.57 µm and Rz 31.2 µm, for Rpm 350 with Vf 21 the Ra value is 10.12 µm, and Rz 42.8 µm, for Rpm 460 with Vf 23 the Ra value is 6.53 µm and Rz 26.2 µm, and for Rpm 460 with Vf 28 the Ra value is 7.65 µm and Rz 34.4 µm. High Rpm but low Vf can produce lower surface roughness compared to low Rpm but high Vf. The surface roughness of the object also affects the corrosion rate, the specimen with the highest surface roughness, namely Rpm 350 with Vf 21, gets the highest corrosion rate value, namely 0.01086 mm/year. for the lowest surface roughness, namely Rpm 460 with Vf 23, gets a value of 0.00890 mm/years. it is proven that the higher the surface roughness value, the higher the corrosion rate value. Keywords: lathe, medium carbon steel, surface roughness, corrosion rate
ANALISIS SISA UMUR PAKAI PIPA PENYALUR FUEL B.35 DI PLTMG AMBON PEAKER 30 MW Leatemia, Josua M.; Nanulaitta, Nevada J.M; Pelasula, Berthy
Journal Mechanical Engineering Vol. 2 No. 3 (2024): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i3.2888

Abstract

Pipeline systems are one way to deliver fuel from refineries to distribution points before it reaches consumers. The system consists of a number of pipes that transport the fluid over a considerable distance. An underground pipeline system is the system used in this design analysis. The technical requirements for the construction and planting of underground pipe systems will have an impact on the pipeline pressure. In this study is how to determine the Remain life of the fuel B.35 pipeline at the PLTMG Ambon Peaker 30 MW. Conducting a thickness testing method with an ultrasonic thickness gauge measuring instrument. In this test, researchers will carry out a series of stages, starting from pipe preparation and characterization to understand the initial condition of the pipeline. Afterwards, testing is carried out using an ultrasonic thickness gauge that not only focuses on the thickness of the pipe, but also on the overall structural integrity.This study was conducted by measuring the thickness of the pipe to obtain preliminary data to measure the remaining service life of the B.35 fuel distribution pipe from the holding tank to the daily tank. Measurement using ultrasonic thickness gauge. The length of the inspected pipe is 78 m divided into 13 staff, with 624 measurement points divided into 48 points per staff. The lowest remaining pipe life value is 13,5 years and the highest is in the 10th staff pipe worth 20,1 years. Keywords: pipe thickness, corrosion rate and remaining pipe service life
ANALISIS PENGARUH VARIASI ARUS PENGELASAN TERHADAP KEKUATAN TARIK DAN STRUKTUR MIKRO PADA SAMBUNGAN LAS SMAW DAN FCAW DENGAN MATERIAL BAJA KARBON RENDAH Picanussa, Jovancko. S. S.; Nanulaitta, Nevada. JM; Huka, Graciadiana I
Journal Mechanical Engineering Vol. 2 No. 3 (2024): Desember
Publisher : Jurusan Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/jme.v2i3.2889

Abstract

Carbon steel is a type of alloy steel consisting of various elements, especially iron (Fe) and carbon (C). In general, the properties of steel are influenced by the percentage of carbon and the microstructure of the steel which is influenced by the composition of the steel and heat treatment. The welding process can change the structure and composition of the steel. In this study, the welding process used is SMAW and FCAW welding. Then the testing process is carried out, namely tensile testing and microstructure to see the effect of variations in the welding current used. In this study, the author will analyze the effect of variations in welding current on tensile strength or mechanical properties as well as the structure and composition of the specimen to be tested in this case medium carbon steel. The welding methods used are FCAW (Flux Core Arc Welding) and SMAW (Shield Metal Arc Welding). The results of this study, the author found that the welding current has an effect on the tensile strength and microstructure of medium carbon steel. Where for tensile strength, the greater the welding current used, the greater the tensile strength of the specimen where the current range used must be adjusted to the thickness of the workpiece used. In FCAW 90A the value obtained is 438.30 MPa and the strain value is 6.20% and SMAW 90A the value obtained is 438.20 MPa and the strain is 7.20%. Likewise, the Pmax and ΔL values where in SMAW 90 ampere the Pmax value is 43.82 KN and ΔL 3.60mm, FCAW 90 ampere the Pmax value is 43.83 KN and ΔL 3.10mm. With this, the author concludes that with a material thickness of 8mm and a current variation of 70 amperes and 90 amperes, it was found that at a larger welding current of 90 amperes, the tensile strength obtained was greater and for the microstructure, the author found changes in the structure of the welding results in FCAW welding where in the raw material the structure found was ferrite and pearlite while for the FCAW welding results, a beanite structure was found. Keywords: Welding, tensile strength, microstructure.

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