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Nevada J.M,Nanulaitta
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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 20 Documents
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Search results for , issue "Vol. 2 No. 3 (2024): Desember" : 20 Documents clear
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
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.
ANALISA PENGARUH VARIASI PUTARAN DAN FEED RATE PADA MESIN FRAIS TERHADAP KEKASARAN PERMUKAAN DAN LAJU KOROSI PADA BAJA KARBON SEDANG Latuconsina, Muhammad Jen; Nanulaitta, Nevada. J. M.; Matheus, Josef
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.v2i3.2890

Abstract

A milling machine or milling machine is a machine tool used in the manufacturing process to produce components or parts with the desired shape and size. Milling machines have an important role in the oil and gas industry, especially in the manufacture of components used in oil and gas industry equipment such as grooves on shafts and gears used in drilling equipment and oil and gas production are often made of medium carbon steel because of its strength and durability. This study aims to obtain roughness values and corrosion rates on medium carbon steel through the milling process with variations in rotation of 900 rpm and 1100 rpm and feed rates of 42 mm / min and 76 mm / min with dromus cooling media. The results of this study obtained the highest average roughness value at a rotation speed of 900 rpm and a feed rate of 42 mm/minute, which is 6.64 µm (Ra) and 31.1 µm (Rz), while the lowest average roughness value at a rotation speed of 1100 rpm and a feed rate of 42 mm/minute is 6.23 µm (Ra) and 30.8 µm (Rz), for a rotation speed of 1100 rpm and a feed rate of 76 mm/minute is 7.92 µm (Ra) and 37.1 µm (Rz). The higher the rotation speed and the lower the feed rate, the lower the roughness value, and vice versa. The highest corrosion rate is at 900 rpm and 76 mm/minute feed rate, which is 0.02194 (mm/y), while the lowest corrosion rate is at 1100 rpm and 42 mm/minute feed rate, which is 0.01555 (mm/y). The higher the surface roughness, the faster the corrosion rate, and vice versa. Keyword : milling machine, surface roughness, corrosion rate, medium carbon steel
Theoretical Design of Offgrid Renewable Energy System Pv For Centrifugal Pump Electricity Supply Umayyah, Nissaeryn Zahro; Hatuwe, Azmain Noor; Lilipaly, Eka R. M. A. P.
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.v2i3.2892

Abstract

ABSTRACTThe off-grid PV system is an alternative power generator as a replacement for the conventional system which is currently still used in production operations at petroleum companies in Indonesia. The application of this offgrid PV system can support oil production operations for companies whose production areas are in remote areas or are still not reached by the PLN network and can reduce the consumption of fossil fuels to run generators so as to reduce greenhouse gas emissions and as a step to utilize the potential of Indonesia's sunlight. This research was carried out using a theoretical study method, namely by processing data obtained from the field using equations obtained from supporting references. This research shows that to meet the electricity needs of a centrifugal pump that operates 5 times a day with one operation of 7.5 kW for 1 hour and the total daily need is multiplied by 2 to calculate cloudy days, 75 kwh of energy is needed a day. The results of the research show that 40 solar panels with a capacity of 450 Wp each installed in series are needed and 80 LIFEP04 batteries made in battery banks totaling 20 banks with 4 batteries each, and 4 5000W inverters so that they can produce 75kWh of power and meet daily load requirements. Key words: offgrid PV system, Centrifugal Pump, parallel series
ANALISIS PENGENDALIAN LAJU KOROSI DAN SISA UMUR PAKAI PIPA PENYALUR SOLAR DI PLTD HARUKU, DESA PELAUW Husen, Fahmi; Karyani, M. Said; Pellu, Deny Ismail
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.v2i3.2894

Abstract

The impact of the corrosion rate of diesel fuel pipes in PLTD HARUKU, DESA PELAUW. This study aims to see how much influence corrosion control has on the corrosion rate and remaining service life studied using an Ultrasonic Thickness Gauge. Measurements were carried out directly with an Ultrasonic Thickness Gauge. The measurement results showed that the highest corrosion rate was 0.0975 mmpy and the lowest was 0.0189. The remaining life of each pipe is determined by a formula that has been adjusted by the standard, with a higher corrosion rate causing a shorter pipe life, in the diesel fuel pipe the highest remaining service life of the IPA is 149 years due to the small corrosion rate while the pipe with the lowest service life is 25 years due to the high corrosion rate. Based on this analysis, the pipe is still feasible to operate. In conclusion, although there are variations in the corrosion rate, and the remaining service life of the pipe can still be operated safely. Keywords: Corrosion control, Corrosion, ultrasonic thickness gauge
Kajian Teoritis Pembuatan Instalasi Elektrohidrolik Menggunakan Metode Cascade pada Mesin Kupas Serabut Kelapa Hatuwe, Azmain Noor
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.v2i3.2895

Abstract

The Department of Mechanical Engineering, Ambon State Polytechnic has made a machine for peeling coconut fiber. This machine has 4 pry blades which function, when stuck in the coconut fiber, they will make opposite movements, so they can tear the coconut fiber. In the operating process, this machine still uses human power, of course human power has limitations when peeling coconut fiber on a large scale. Therefore, the coconut peeling machine needs to be driven automatically using hydraulic power so that the work process does not depend on human power. The method used in this research is a theoretical study, where data obtained from the field is processed using references and devices that support the construction of electrohydraulic installations. Fluidsim software is needed to test the movement of electrohydraulic installations according to short notation A+ B+ B- A-. The working mechanism of an electrohydraulic installation in controlling the movement of a hydraulic cylinder is shown step by step in the form of a hydraulic diagram and an electro diagram.From the test results, information was obtained that the coconut peeling machine uses 2 cylinders as the driving force for the mechanical system of coconut fiber peeling knives. Working principle of electrohydraulic installation according to the cascade method, in the signal control installation section; relays k1 and k2 turn on alternately in sequence, and in the power control installation section, the relay switch will turn on the solenoids y1, y2, y3 and y4 sequentially according to the short notation. Keywords: Electrohydraulics, Cascade Method, Coconut Fiber Peeling Machine
ANALISIS KETEBALAN PELAT DAN PENENTUAN SISA UMUR PAKAI PADA TANGKI 2 DI PLTMG AMBON PEAKER Mahubessy, Nurul Fadhila; Effendy, Edison; Lilipaly, Eka R. M. A. P.
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.v2i3.2896

Abstract

ABSTRACTThe Ambon Peaker Gas Power Plant (PLTMG Ambon Peaker) is an electrical infrastructure facility powered by gas turbines, located in Waai Village, Central Maluku Regency, Maluku Province. The fuel oil storage tank used by the Ambon Peaker since 2019 is situated directly near the coastline, making it very vulnerable to damage, particularly from corrosion on its metal plate walls. Therefore, maintenance is necessary to prevent any unwanted workplace accidents. This tank stores fuel oil. The author conducted calculations for minimum thickness and corrosion rate to determine the remaining lifespan of the tank. The results indicate that the critical point is located at course 1, with a remaining lifespan of 121 years. This can be influenced by various factors, such as environmental conditions and fluid characteristics. Tank maintenance also needs to be considered to ensure the tank's reliability, allowing it to operate longer and preventing the need for corrective maintenance. Keywords: storage tank, corrosion rate, wall thickness, remaining life.
ANALISIS CORROSION RATE TERHADAP REMAINING LIFE STORAGE TANK T03-300 KL DI PLTD POKA DENGAN MENGGUNAKAN METODE RISK BASED INSPECTION (RBI) Fazrian, Rian; Pattikayhattu, Erwin B.; Patty, Alexander A.
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.v2i3.2897

Abstract

AbstractThis study is entitled "Corrosion Rate Analysis of Remaining Life Storage Tank T03-300 KL at PLTD Poka Using the Risk Based Inspection (RBI) Method". The purpose of this study is to evaluate the corrosion rate and residual life of the T03-300 KL storage tank used at PLTD Poka, as well as to provide recommendations related to appropriate inspection strategies based on risk analysis. The method used in this study is Risk Based Inspection (RBI), which allows the determination of the probability of failure (PoF) and the consequences of failure (CoF) of the storage tank. The data collected includes primary data through observation, measurement, and direct inspection of tanks, as well as secondary data from relevant literature.Keyword : Corrosion Rate, Remaining Life, Storage Tank Risk Based Inspection (RBI), Probability of Failure (PoF), Consequence of Failure (CoF)

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