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Study Analysis Fuel from Plastic Waste Azharuddin; Dwi Arnoldi; Fenoria Putri; Kemas M. Fadhil Almakky; M. Ivan Davala
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 1 No. 3 (2021): IJRVOCAS - December
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (374.293 KB) | DOI: 10.53893/ijrvocas.v1i3.59

Abstract

The explosion of plastic-based waste (polymer) in the environment, as a result of its excessive use, so that this phenomenon causes damage to environmental ecosystems, water absorption is not optimal causes flooding, and polluting nutrients in the soil. Plastic is a polymer compound composed of the main elements, namely carbon and hydrogen. The best results in this study by using this tool have a physical appearance: yellow like premium fuel type "1.0" (color test results using the ASTM D1500 method), very pungent smelling liquid, thicker when compared to premium fuel types. And has specifications: Density value of 786.4 kg/m3, Sulfur Content 0.003% m/m, water content 282 ppm, CCI 53.4.
Design And Implementation of Fire Protection Systems For Powerpole Transformers Fenoria Putri; Muhamad Habib Abizar; Muhammad Asyraf bin Zulkipli
Nusantara Journal of Multidisciplinary Science Vol. 3 No. 9 (2026): NJMS - April 2026
Publisher : PT. Inovasi Teknologi Komputer

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Abstract

Transformator tiang listrik, komponen penting dalam distribusi listrik, menghadapi risiko kebakaran yang signifikan akibat beban listrik yang tinggi, korsleting, dan faktor lingkungan. Pengembangan sistem proteksi kebakaran yang efektif untuk transformator ini sangat penting untuk mencegah pemadaman listrik dan meminimalkan bahaya kebakaran. Studi ini mengeksplorasi desain dan implementasi strategi proteksi kebakaran tingkat lanjut, termasuk penggunaan material tahan api, deteksi kebakaran otomatis, dan sistem pemadaman. Studi ini juga menekankan pentingnya perawatan rutin dan pemantauan waktu nyata untuk mengidentifikasi tanda-tanda awal panas berlebih atau kegagalan. Dengan mengintegrasikan sistem-sistem ini, risiko kebakaran transformator dapat dikurangi secara signifikan, sehingga memastikan keandalan dan keamanan yang lebih besar dalam jaringan distribusi listrik. Penelitian ini selanjutnya mengevaluasi dampak ekonomi dan lingkungan dari implementasi sistem tersebut, serta mendukung peningkatan standar keselamatan dalam infrastruktur utilitas
THE EFFECT OF QUENCHING WITH VARIOUS COOLING MEDIA ON THE HARDNESS OF LEAD SCREW PIN IN A LATHE MACHINE Muhammad Rizki Akbar; Fenoria Putri; Baiti Hidayati
Algebra : Jurnal Pendidikan, Sosial dan Sains Vol. 6 No. 1 (2026): Algebra : Jurnal Pendidikan Sosial dan Sains
Publisher : Yayasan Amanah Nur Aman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58432/k70yeh39

Abstract

This study analyzes the effect of the quenching process with various cooling media on the hardness of lead screw keys in a lathe. The objective was to determine the most effective cooling media for improving the key's mechanical properties, which play a critical role in the performance and durability of the lead screw. The cooling media tested included water, fresh SAE 10W-40 oil, and used SAE 10W-40 oil. The research method involved heat treatment at 850°C, followed by quenching using each medium, and then testing the hardness using the Rockwell B (HRB) method. The results revealed an unexpected finding: the untreated key had the highest hardness value (97.05 HRB), surpassing all quenched samples. Among the hardened samples, water produced the highest hardness (91.88 HRB), followed by used oil (82.32 HRB) and fresh oil (78.66 HRB). This indicates that the quenching process did not increase hardness and, in some cases, even decreased it. Potential causes include temperature instability during heat treatment and inaccurate material characterization, as SEM analysis failed to confirm the expected composition of the high-carbon steel. This study concluded that the quenching parameters and material characterization methods require refinement. Future research is recommended to utilize more precise temperature control, validate the material composition using techniques such as Optical Emission Spectroscopy (OES), and explore alternative cooling media. These findings emphasize the importance of precise heat treatment process control to achieve desired mechanical properties in industrial applications.