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All Journal Journal of Applied Sciences and Advanced Technology Journal of Innovation Research and Knowledge
Sobri Sobri
Politeknik Ahli Usaha Perikanan
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Law, Crime, Criminology & Criminal Justice Social Sciences

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Design of Refrigerant Leak Detector on Arduino Uno – Based Refrigeration System Sobri Sobri; M. Subroto Aliredjo; Yusuf Aditya Nugraha; Istianto Budhi Rahardja
Journal of Applied Sciences and Advanced Technology Vol 3, No 1 (2020): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.3.1.9-16

Abstract

Refrigeration loos has big impact on inefficient system operation, increase power consumption, higher maintenance cost and moreover contribute to global warming. The purpose of this study is designing refrigerant leak detection device, making a refrigerant leak detector, and testing the refrigerant leak detector in a refrigeration system. Research was conducted for six months, starting in November 2018 until Mei 2019 at the ice block factory owned by KUD. Usaha Mina, Semarang City. The stages of method used in this study include studying of literature, designing device, making device, and testing refrigerant leak detection device. As for the research result are as follows 1) The design of the refrigerant leak detector is made using CorelDraw Grapichs Suite X7 very easily according to the input and output to get desired function 2) In assembling components using jumper cable, it must be in accordance with the input that is in the program so that it does not cause a short circuit to component. Sensitivity level of this refrigerant leak detection device is very high, depending on how in programing the desire level of sensitivity and other factors such as NH3, NOx, Alcohol, Benzene, Smoke, CO2, and other gases. Because the gases will affect the level of sensitivity of device. 4) The testing of a refrigereant leak detector must be close to the source of leakage which serves to accelerate the device to detect leakage 5) The voltage needed by this tool is between 5 – 20V (DC).
Comparative Analysis of the Amount of Fuel Use for Main Motor 1 in Theory and Reality in the Field During Operation One Trip at KMN. Cahaya Lapawawoi 01 Ade Hermawan; Teguh Binardi; Agustiawan Agustiawan; Samsi Samsi; Priyantini Dewi; Sobri Sobri; Istianto Budhi Rahardja
Journal of Applied Sciences and Advanced Technology Vol 4, No 1 (2021): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.4.1.7-14

Abstract

Ships are units used for transportation, logistics industry, fishing units and so on. In its operations, ships use fuel oil to move and reach their intended destination. The fuel oil used includes heavy fuel oil (HFO), medium fuel oil (MFO), and intermediate fuel oil (IFO). The main factors that affect the high and low use of fuel are rotation (rpm) and also the operating time of the main engine. Flowmeter is a measuring tool to determine the amount of fuel oil consumption in the engine. The function of the flowmeter is to measure the volume of liquid that passes through the device so that the total volume of liquid that enters a container / place or machine is obtained. Flowmeter and Tachometer are very helpful in calculating fuel consumption on board. Basically, with the use of high rotation, it can accelerate the speed of the ship's movement to reach its destination.
ANALISIS RISIKO KESELAMATAN PEMBUATAN POROS PROPELLER DENGAN METODE HIRADC DI PT ASIA MAKMUR REJEKI Marsono Marsono; Ade Hermawan; Samsi Samsi; Mustopa Kamal; Sobri Sobri; M. Alfan Anshori; Syafiul umam
Journal of Innovation Research and Knowledge Vol. 5 No. 11 (2026): April 2026
Publisher : Bajang Institute

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Abstract

Kinerja karyawan harus optimal untuk mencapai tujuan perusahaan, sehingga penting untuk menciptakan lingkungan kerja yang nyaman dan tenang. Perusahaan juga harus memperhatikan keselamatan dan kesehatan kerja untuk mencegah kecelakaan. Pekerjaan dapat dianggap aman jika dapat menghindari risiko. Proses pembuatan shaft propeller dari stainless steel dengan mesin bubut adalah penting dalam industri kapal. Pontensi bahaya pada proses pembuatan poros propeller muncul pada semua tahapan proses meliputi, Pemindahan material poros propeller, pembubutan, pengeboran, dan penghalusan material poros propeller. Bentuk risiko tersebut diantaranya, cedera fisik karena kontak dengan mesin, cedera otot dan tulang saat mengangkat material, serta paparan debu logam dan kebisingan yang dapat membahayakan kesehatan. Analisis yang dihasilkan dari identifikasi variasi risiko yang memiliki nilai tertinggi dengan menggunakan metode Hazard Identification, Risk Assessment and Determining Control (HIRADC) ada beberapa bahaya yang teridentifikasi meliputi risiko tertimpa benda berat, paparan benda tajam, cedera pada mata, iritasi, kontak dengan mesin bergerak, gangguan pendengaran, serta luka dan memar. Dalam pengukuran risiko, ditemukan bahwa nilai tertinggi mencapai 6, sementara nilai terendah adalah 1. Hasil dari studi ini memberikan pemahaman yang penting mengenai keselamatan dan kesehatan kerja di workshop dalam proses pembuatan poros propeller.
Co-Authors Ade Hermawan Agustiawan Agustiawan Istianto Budhi Rahardja M. Alfan Anshori M. Subroto Aliredjo Marsono Marsono Mustopa Kamal Priyantini Dewi Samsi Samsi Syafiul umam Teguh Binardi Yusuf Aditya Nugraha