Article Per Year (5 Year)
p-Index From 2021 - 2026
0.61
P-Index
This Author published in this journals
All Journal Journal of Scientech Research and Development
Mukhnizar , Mukhnizar
Unknown Affiliation
Humanities Computer Science & IT Education Industrial & Manufacturing Engineering Social Sciences

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search
Journal : Journal of Scientech Research and Development

 1 
ANALYSIS OF OVERHEAT OF PERTAMAX FUEL DISTRIBUTION PUMP FOR MAINTENANCE ACTION AT PT. PERTAMINA PATRA NIAGA–FUEL TERMINAL MEDAN GROUP Mukhnizar , Mukhnizar; Risal Abu; Fauzan Rinaldi
Journal of Scientech Research and Development Vol 6 No 1 (2024): JSRD, June 2024
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v6i1.507

Abstract

This study aims to analyze the causes of overheating in Pertamax fuel pumps at PT. Pertamina Patra Niaga–Fuel Terminal Medan Group and determine the appropriate maintenance actions to prevent operational failures. Overheating in pumps can cause serious damage and operational disruptions that have the potential to disrupt fuel distribution. The methodology used includes collecting operational data, analyzing pump conditions using infrared thermography, and evaluating pump performance based on industry standards. The results of the study indicate that overheating is caused by several factors such as component wear, inadequate lubrication, and fluid flow instability. Based on these findings, several preventive and predictive maintenance actions are recommended, including maintenance rescheduling, improving the lubrication system, and implementing real-time temperature monitoring. The implementation of these maintenance actions is expected to improve pump reliability and reduce the risk of overheating in the future.
THE EFFECT OF FEEDING AND MAIN CUTTING ANGLE ON THE SURFACE ROUGHNESS OF METAL RESULTING FROM FLAT TURNING ON ST 37 STEEL MATERIAL Mukhnizar , Mukhnizar; Muhammad Akbar Pratama; Risal Abu
Journal of Scientech Research and Development Vol 7 No 2 (2025): JSRD, December 2025
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v7i2.1508

Abstract

High-quality turning is achieved through optimal cutting conditions. One of the variables affecting cutting conditions is surface roughness. The aim of this research is to examine the influence of feed rate and main cutting angle on the surface roughness of flat turning results on ST 37 steel material. The turning process was carried out with a cutting depth of 0.5 mm during the finishing process by varying the feed rate and main cutting angle. The feed rates used were 0.070 mm/rev, 0.281 mm/rev, and 0.450 mm/rev on ST 37 workpieces with a diameter of 24 mm and a length of 44 mm, which were turned down to a diameter of 23 mm along the same 44 mm length using a High Speed Steel (HSS) cutting tool. After the turning process, the surface roughness of the workpieces was measured using a Mitutoyo SJ-201P Surface Tester. The results of this study show that at main cutting angles of 80° and 90° and feed rates of 0.070 mm/rev, 0.281 mm/rev, and 0.450 mm/rev, the smallest surface roughness value achieved was Ra = 2.88 µm, corresponding to surface roughness grade N7, which occurred at a main cutting angle of 80° and a feed rate of 0.070 mm/rev. Meanwhile, the highest surface roughness value was Ra = 8.85 µm, corresponding to surface roughness grade N9, which occurred at a main cutting angle of 90° and a feed rate of 0.450 mm/rev.
HEAT TRANSFER ANALYSIS IN THE HIGH PRESSURE HEATER CFB BOILER OF PLTU TELUK SIRIH UNIT 2 Muhammad Anwar; Mukhnizar , Mukhnizar; Risal Abu
Journal of Scientech Research and Development Vol 7 No 2 (2025): JSRD, December 2025
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v7i2.1509

Abstract

Teluk Sirih Steam Power Plant (PLTU) is a coal-fired power plant with a capacity of 2 × 112 MW, utilizing a Circulating Fluidized Bed (CFB) boiler. One of the critical components in this system is the High Pressure Heater (HPH), which functions as a feedwater preheater to improve the thermal efficiency of the cycle. This research aims to analyze the heat transfer performance of HPH 1 and HPH 2, and to identify the factors contributing to the efficiency decline. The analysis methods include calculations of Terminal Temperature Difference (TTD), Drain Cooler Approach (DCA), Temperature Rise (TR), Log Mean Temperature Difference (LMTD), Heat Capacity Ratio, and thermal effectiveness (ε). Data were collected from performance tests conducted in 2024 and compared with commissioning data from 2014. The results indicate a performance degradation in the HPH units, as shown by increased TTD and DCA values and decreased effectiveness. This decline is suspected to be caused by fouling or damage to the heat exchange tubes, which adversely affects water heating efficiency. The study recommends regular maintenance and cleaning measures to restore the performance of the HPH units. This research is expected to contribute to improving plant efficiency and reducing fuel consumption.
Co-Authors Fauzan Rinaldi Muhammad Akbar Pratama MUHAMMAD ANWAR Risal Abu