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Muhammad Abdillah
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m.abdillah@universJitaspertamina.ac.id
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jesacdee@universitaspertamina.ac.id
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Universitas Pertamina Jalan Teuku Nyak Arief, Simprug, Kebayoran Lama, Jakarta 12220, Indonesia
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INDONESIA
JESCEE- Journal of Emerging Supply Chain, Clean Energy, and Process Engineering
Published by Universitas Pertamina
ISSN : -     EISSN : 29643511     DOI : https://doi.org/10.57102/jescee.v1i1
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
The Journal of Emerging Supply Chain, Clean Energy and Process Engineering (JESCEE) is a peer-reviewed journal that provides an authoritative source of scientific information for researchers and engineers in academia, research institutions, government agencies, and industries. We publish original research papers, review articles, and case studies on all aspects of engineering (mechanical, electrical, chemical, and logistics). The topics to be covered include, but are not limited to renewable energy, energy conversion, mathematical modeling, diagnostics, optimization techniques, renewable energy sources, energy management systems, applications of expert systems, clean energy storage and generation, process and product simulation, reaction engineering, and related topics.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 6 Documents
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Search results for , issue "Vol 2 No 1 (2023): Journal of Emerging Supply Chain, Clean Energy, and Process Engineering" : 6 Documents clear
Implementation of Lean Manufacturing to Identify and Minimize Waste in The Welding Framebody Department of PT XYZ Resista Vikaliana; Anggita Awanis
Journal of Emerging Supply Chain, Clean Energy, and Process Engineering Vol 2 No 1 (2023): Journal of Emerging Supply Chain, Clean Energy, and Process Engineering
Publisher : Universitas Pertamina

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57102/jescee.v2i1.23

Abstract

PT XYZ is a transportation equipment manufacturing company that must always maintain that the products it produces can achieve sales targets. However, in carrying out the production process, PT XYZ often experiences shortages in the production process, one of which is due to problems in the welding frame body department.  Thus, the objectives of this research are to determine the flow of the production process in the welding frame body department, then analyze the waste that occurs in the body parts of the welding frame. This frame body welding department has a production process flow starting from St. Rear Frame 1 to St. Rear Frame 4, then St. Front Frame 1 to St. Front Frame 3, after that St. General Assy, Permanent Robot/Robot Handling, Fine Boring, Manual 1 and Manual 2, and ending in Tapping and Numbering. Based on the flow of the production process, it was found that St. Rear Frame 3 is the most problematic with a percentage of 21%. By using the DMAIC method, in the Define stage, it was found that the most common problem that occurred in St. Rear Frame 3 was a torn pipe in lower jig B with a percentage of 6%. At the Define stage, it is also known that the root cause of the problem is the lack of accuracy from the operator, who may be sleepy at work due to lack of rest, or even chatting, which results in setting teaching too far because it is more dominant to the lower, not to the iron connection between the lower and the subframe. Then, at the measurement stage, the target is to reduce 6% of the problems to 4%. Furthermore, at the analysis stage, an analysis is carried out to determine if the potential problem occurs and then what next steps will be conducted which is useful for minimizing waste. At the Improve and Control stage, namely, the steps taken to minimize the problem or waste (preventive actions) and what steps or ways to do if the problem or waste occurs again (contingent actions).
Study of Distribution Transformer Voltage Drops in Feeder 5 Out Going Districts 4 and 6 at PT. PLN (Persero) Tarakan City, North Kalimantan Marthen Arifin; Ismit Mado; Achmad Budiman; Choirul Anwar; Samuel Nathanael
Journal of Emerging Supply Chain, Clean Energy, and Process Engineering Vol 2 No 1 (2023): Journal of Emerging Supply Chain, Clean Energy, and Process Engineering
Publisher : Universitas Pertamina

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57102/jescee.v2i1.31

Abstract

This research aims to determine the low-voltage drop that occurs at the substation and on the customer side. The voltage drop is affected by many factors, including line resistance, line current, power factor, and line length. The need for electric power is increasing every year, causing power losses and voltage drops in the network to be a major concern. This research was conducted at Feeder 5, outgoing villages 4 and 6, one of the areas of PT. PLN in Tarakan City. The research data is voltage measurement data. This research applies analytical calculations with a quantitative descriptive method compared to calculations based on ETAP software. The allowable voltage drop by SPLN is 5% of the nominal voltage. The results of the analysis show that the average voltage drop that occurs is still within the limits permitted by the SPLN, namely below 5% of the nominal voltage.
Transportation Development Trends in Reverse Logistics of Fast-Moving Consumer Goods Industries: A Bibliometric Analysis Muhammad Fajar Ikhlas; Winda Septiana; Nazihah Khairunnisa; Riqqi Rahardi; Yelita Anggiane Iskandar; Adji Candra Kurniawan
Journal of Emerging Supply Chain, Clean Energy, and Process Engineering Vol 2 No 1 (2023): Journal of Emerging Supply Chain, Clean Energy, and Process Engineering
Publisher : Universitas Pertamina

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57102/jescee.v2i1.50

Abstract

The city's growing population is causing an increase in traffic demand for supply, mobility, and reverse logistics areas. These are the challenges that participants in the logistics sector are facing, together with rising commodity demand for fundamental requirements. As a result, many scientists are driven to design logistics solutions to mitigate the impact of a growing population, which increases demand for logistics and supply chains, which also has an influence on the community's environment. However, thorough literature survey studies targeted at finding potential treatments for the management of supply chain disorders using bibliometric, network, and theme analyses are still few and limited. According to the findings of the investigation, the primary supply chain themes are provider logistics and reverse logistics. This research has various implications for reverse logistics in the FMCG industry. According to the research, suppliers must understand that implementing environmental activities with their clients may improve their ability to compete in the market, and the "last mile" of distribution may thus be completed by electric cars because the distances are so short that they do not present any difficulties or require elaborate human planning. Therefore, we find that employing logistics providers to manage the FMCG industry or looking at the strategies of logistics providers for renewable energy might be an intriguing future study area.
ANALYSIS OF MAINTENANCE OPTIMIZATION ON MEDIUM VOLTAGE OVERHEAD LINES (SUTM) IN REDUCING ENERGY NOT SUPPLIED (ENS) AT PT PLN (PERSERO) ULP TARAKAN Agun Suryani; Achmad Budiman
Journal of Emerging Supply Chain, Clean Energy, and Process Engineering Vol 2 No 1 (2023): Journal of Emerging Supply Chain, Clean Energy, and Process Engineering
Publisher : Universitas Pertamina

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

Abstract

The background of this research is an analysis of equipment disturbances that occur in the process of distributing electrical energy. Where the direct impact felt as a result of the disturbance is blackout. Power outages cause a decrease in continuity of service to customers and result in a lot of loss of electrical energy that is not distributed to customers. The research objectives are to find out the optimization technique of distibution network maintenance, how to reduce the value of energy not supplied (ENS), find out the losses due to ENS and find out the total electrical energy distributed after preventive maintenance is carried out. This research uses a preventive maintenance method, which is maintenance that can prevent unexpected damage to distribution system networks and equipment. This research resulted in the optimization of preventive maintenance actions in the form of a reduction in disturbances after preventive maintenance from 7 disturbances in February to 2 disturbances in March. Before preventive maintenance was carried out, the loss due to ENS amounted to Rp. 36,192,017.626 and the total electrical energy that was not distributed was 25,025.76 kWh. After preventive maintenance was carried out, there was a significant decrease in the total loss due to ENS of Rp. 953,516,447 and the amount of electrical energy that was not distributed was 659.28 kWh. This research can increase maintenance efficiency due to electrical energy losses by 97.36% at the time interval when this research data is managed when data collection is carried out in the field.
ONE STEP HYDROTHERMAL SYNTHESIS OF NICKEL DOPED TIO2 NANOTUBE Eduardus Budi Nursanto; Resa Mayori Ridoi Sinaga; Dita Floresyona; Rinaldi Medali Rachman; Agung Nugroho
Journal of Emerging Supply Chain, Clean Energy, and Process Engineering Vol 2 No 1 (2023): Journal of Emerging Supply Chain, Clean Energy, and Process Engineering
Publisher : Universitas Pertamina

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57102/jescee.v2i1.59

Abstract

TiO2 is one of the photocatalyst materials that widely used and proven for environmental treatment. To increase the activity of TiO2, TiO2 has been modified into nanotubes shape with nickel metal doping. The TiO2 nanotubes with Ni doping have been synthesized with one step hydrothermal process. In this research, it shows that nickel doped with TiO2 led to reduction of crystal size and band gap energy. The smaller crystalline size and lower band gap energy enhanced its photocatalytic activity. The best results for photocatalytic activity were TiO2/Ni with a crystal size of 7.30 nm and a band gap energy value of 3.12 eV. The photocatalytic activity of TiO2/Ni was tested by degrading methylene blue under mercury lamp radiation, with the best result of 92.73 % degradation of methylene blue, within 240 minutes of photocatalytic activity.
FLAVONOID EXTRACTION FROM PAPAYA (CARICA PAPAYA L.) SEED USING ULTRASOUND – ASSISTED EXTRACTION METHOD AND DETERMINATION OF ITS SPF VALUE Eduardus Budi Nursanto; Rachel Wijaya; Sari Alifiana Permata
Journal of Emerging Supply Chain, Clean Energy, and Process Engineering Vol 2 No 1 (2023): Journal of Emerging Supply Chain, Clean Energy, and Process Engineering
Publisher : Universitas Pertamina

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

Abstract

Synthetic compounds with photoprotective property have their limited concentration in sunscreen formulation. Therefore, reaching the maximum UV protection by themselves is difficult. Natural compounds are good consideration to include in sunscreen formulations. Papaya seeds contain large amounts of nutraceutical compounds. However, their presence is often considered as waste. One of many benefits it has is due to the presence of flavonoids, phenols, alkaloids, saponins, and tannins. Flavonoid is one of the alternative compounds that provide beneficial effects on skin UV-protection. Therefore, this study aimed to extract the flavonoid compounds in papaya seeds and test its sun protection factor (SPF) value. Extraction was carried out by varying the mass ratio of the solid/solvent (1:10, 1:20, and 1:30), and the solvent concentration of ethanol (50%, 70%, and 96%) at 45oC for 45 minutes. The results of this study indicate the presence of these compounds in papaya seed extract which was extracted using the ultrasound-assisted extraction method with the maximum extraction yield (11.888%) obtained at 1:30 mass ratio with a 50% ethanol concentration; the highest total flavonoid content was 2.854 mg quercetin equivalent (QE)/g papaya seed at 1:30 ratio with 96% ethanol concentration, and the highest SPF value was at a 50% ethanol concentration which was 12.0775 (at 300 ppm).

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