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Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi
Published by Universitas Teuku Umar
ISSN : 24775029     EISSN : 25020498     DOI : -
Core Subject : Engineering,
Aerospace Engineering Automotive Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Mekanova merupakan kumpulan karya ilmiah para akademisi, peneliti dan praktisi yang bertujuan menyatukan pengalaman-pengalaman, ide-ide dan hasil penelitian terutama dalam bidang“Mekanikal, Inovasi dan Teknologi”.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 16 Documents
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Search results for , issue "Vol 8, No 1 (2022): April" : 16 Documents clear
Analisis Perawatan Cutter Section Dredger Dengan Metode FMEA dan OEE Hardiatama, Intan; Yudah, Norman Audi Erlangga Pradipta; Sidartawan, Robertus; Basuki, Hari Arbiantara; Kristianta, Franciscus Xaverius
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 1 (2022): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.074 KB) | DOI: 10.35308/jmkn.v8i1.5454

Abstract

The development of technology and industry is currently being followed by increasing demand from the industry for mining or mineral materials, one of which is tin. Indonesia as the second largest tin producing country in the world plays a very important role in the development of technology and industry in the world. In Indonesia, tin mining is carried out by several companies, one of which is PT Timah (Persero) Tbk. This study aims to determine the effectiveness of the KIP 17 dredger system is 77% and the critical components obtained are the shaft and joint on the pump. The results of the analysis using Fishbone diagrams show that the quality of bolts and nuts and sealsused is not good. With the results of the study, it is recommended to increase personnel, especially in maintenance activities, and to improve the quality of nuts, bolts, and seals so as not to cause water to enter which can damage core components. Keywords—Mining, FMEA, Dredger 
ANALISIS PERFORMA TURBIN PELTON SUDU SEGITIGA DENGAN VARIASI SUDUT SEMPROT NOSEL Riani, Novi Indah; Masykur, Masykur; Abidin, Zainal
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 1 (2022): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (406.497 KB) | DOI: 10.35308/jmkn.v8i1.5512

Abstract

The availability of electrical energy in Indonesia is a very important factor in encouraging development. Increased development, especially in the industrial sector in the form of factories and home industries, continues to grow rapidly. These developments include economic and population growth, so that the need for electrical energy continues to increase. The Pelton turbine is an electrical energy generator that utilizes water as a propeller or bucket on the rotating wheel of the Pelton turbine. So that, it is expected as an alternative to provide electrical energy needs, especially in the industrial sector. This study aims to determine the effect of variations in the angle of the nozzle spray on the triangular blade on the performance of the Pelton turbine. The variations of the nozzle spray angle include 30º, 45º, and 90º. Each nozzle spray angle is varied to the valve opening angle of 60º, 75º, 90º with lamp loads of 0, 5, 10, 15, 20, 25 Watt. Based on the results of this study, it is proven that the nozzle spray angle of 90º has the best results at a valve opening angle of 90º and a lamp load of 15 Watt which produces a generator power of 6.784 Watt with an efficiency of 54.04%. Keywords— Pelton turbine with triangular blade, nozzle spray angle, valve opening angle, generator power, efficiency.
KEKUATAN DAN DAYA TAHAN PEGAS TERHADAP GETARAN BANDUL PADA VIBRATING SCREEN DI STASIUN PEMURNIAN PKS PT. X Darmadi, Herry; Muttaqin, Maraghi; Tambunan, Khairul Azhari; Barus, Romi Antoni
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 1 (2022): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (460.294 KB) | DOI: 10.35308/jmkn.v8i1.5453

Abstract

Pegas ulir adalah salah satu komponen elastis, biasa dibuat dari lilitan kawat baja dengan sifat pegas yang elastis, pegas berfungsi untuk menerima getaran dan memberikan gaya akibat dari beban yang di berikan seperti pegas yang terpasang pada vibrating screen di stasiun pemurnian. Gaya yang di hasilkan sebuah pegas biasa tarikan atau tekanan. Pegas merupakan salah satu komponen penting pada alat vibrating screen karena pegas digunakan untuk menopang beban dan juga menghasilkan getaran yang di teruskan dari getaran bandu pada elektromotor vibrating screen. Karena pegas menerima beban tekan dan juga beban tarik maka haruslah di perhitungkan kekuatan pegas yang di gunakan sesuai dengan beban yang di terima dan dilakukan perawatan agar menghindari dari kerusakan pada pegas. Pada penelitian ini di lakukan pengujian pada pegas ulir vibrating screen bahan baja AISI 1045 dengan kategori baja karbon menengah menggunakan metode uji kekerasan dan uji tarik. Pada uji kekerasan besarnya vickers hardness rata-rata (Hv) pada pegas yang terjadi pada bahan I, II dan III adalah 274,5866 Hv, 120,8289 Hv dan 326,6700 Hv. Pada uji Tarik besarnya tegangan tarik (σB) pada pegas yang terjadi pada bahan I, II dan III adalah 101,48 Kgf/ , 105,49 Kgf/ dan 109,47 Kgf/.
ANALISA KERUSAKAN DAN PERBAIKAN HYDRAULIC LIFT CYLINDER PADA WHEEL LOADER KOMATSU WA180 Sujahri, Irfan; Murhaban, Murhaban
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 1 (2022): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (392.436 KB) | DOI: 10.35308/jmkn.v8i1.4261

Abstract

PT. Beurata Subur Peusada is a factory engaged in the palm oil processing industry (PMKS). To produce quality and quality palm oil products, it must be supported by good production machines. Especially on heavy equipment that has a lot of problems, because it is influenced by the age of the machine which is more than 10 years old. The hydraulic lift cylinder serves to transport and lower the arm using oil fluid as the medium. This research is to identify the types, triggers, and identify steps to repair the Komatsu Wa 180 Hydraulic Lift Cylinder Wheel Loader. The checking method was tried visually on the Hydraulic Hose, control valve, working pump, and Hydraulic Cylinder. The purpose of this study is to analyze the trigger for the damage of the Hydraulic Lift Cylinder. Research obtained on the hydraulic lift cylinder, the occurrence of damage to the seal and pins which resulted in the performance of the Komatsu Wa 180 Wheel Loader being not optimal. In repairing it is tried by exchanging damaged components and sterilizing all components from dirt. Avoidance activities by carrying out daily checks and preventive maintenance methods.
Analisa Kebisingan Pada Station Kamar Mesin Unit Pabrik Kelapa Sawit Batee Puteh PT. Agro Sinergi Nusantara Fahril, Yeldi; Susanto, Herdi; Pribadyo, Pribadyo
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 1 (2022): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (392.738 KB) | DOI: 10.35308/jmkn.v8i1.5389

Abstract

Pabrik Kelapa Sawit (PKS) Batee Puteh, PT Agro Sinergi Nusantara merupakan pabrik yang memproduksi Crude Pulm Oil (CPO). Penelitian ini dilakukan pada lingkungan kerja fisik di stasiun kamar mesin. Ada 11 stasiun pada pabrik kelapa sawit, namun tingkat kebisingan yang paling tidak normal terdapat pada stasiun kamar mesin. Rata-rata tingkat kebisingan pada stasiun kamar mesin mencapai 92,9dBA. Tingkat kebisingan disebabkan oleh turbin, main switch distribution board (PANEL), Back Pressure Vassel (BPV) yang bekerja pada stasiun kamar mesin. Titik pengukuran dipetakan hingga terdapat 3 titik pengukuran yang berjarak 2 meter setiap titiknya. Setiap titik pengukuran akan dilakukan pengukuran dan dihitung dengan menggunakan metode ekuivalen. Hasil dari perhitungan tingkat kebisingan pada 3 titik pengukuran dinyatakan tidak baik, dikarenakan seluruh titik pengukuran melewati nilai ambang batas. Tingkat kebisingan pada stasiun kamar mesin perlu dilakukan reduksi. Perusahaan harus memperhatikan seluruh operator pada statsiun kamar mesin dalam hal menggunakan alat pelindung diri dan melakukan check kesehatan pendengaran operator secara rutin, sehingga pekerja terhindar dari cedera serius yang nantinya bisa terjadi
ANALISIS pH, TDS, TOTAL HARDNESS, ALKALINITY, DAN SILICA PADA BOILER FEET WATER DI PT. SOCFINDO PERKEBUNAN KELAPA SAWIT DI SEUNAGAN Maulizar, Alvi; Masykur, Masykur; Supardi, Joli
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 1 (2022): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (151.302 KB) | DOI: 10.35308/jmkn.v8i1.5630

Abstract

The basic need of living things that is very important and cannot be separated is water. Various industrial activities require water for processing activities such as the palm oil industry, the palm oil industry is required to use water with good conditions such as proper chemical treatment. The power plant at PT. Socfindo Seunagan, requires water for steam needs from the boiler. Boiler is a closed place to produce steam from heating water. The boiler system, among others, consists of 3 parts, namely the water line system and steam system, fuel system and boiler system. Part of the steam system requires a lot of water to be adjusted automatically so that the steam in the system is met. The boiler feed water used must be able to meet the requirements as a source of steam and can prevent the formation of corrosion in the pipes. Therefore researchers are trying to maintain the stability of boiler feed water by maintaining pH, therefore it is necessary to analyze pH, TDS, Total hardness, Alkalinity, and SILICA in boiler feed water.

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