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Kamal, Dianta Mustofa
Politeknik Negeri Jakarta
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Perencanaan dan Penjadwalan Pemeliharaan Mesin KAESER Rotary Lobe Blower Model HB 1600 PI di PT. Lotte Chemical Titan Nusantara Almahri, Alif Fiqih; Kamal, Dianta Mustofa
Seminar Nasional Teknik Mesin 2019: Prosiding Seminar Nasional Teknik Mesin 2019
Publisher : Politeknik Negeri Jakarta

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Abstract

Penulisan makalah ini bertujuan untuk merencanakan dan menjadwalkan pemeliharaan mesin KAESER Rotary Lobe Blower Model HB 1600 PI dan dimasukan ke dalam jadwal Preventive Maintenance Routine di PT. LOTTE CHEMICAL TITAN NUSANTARA. Dikarenakan mesin belum memiliki susuan jadwal pemeliharaan yang terencana, maka diperlukan perencanaan dan penjadwalan perawatan. Metode yang diterapkan dalam penyusunan perencanaan penjadwalan pada mesin KAESER Rotary Lobe Blower Model HB 1600 PI yaitu dengan menggunakan studi pustaka, pengumpulan data mesin terkait dengan melakukan observasi lapangan, serta wawancara dengan pihak terkait. Dengan adanya perencanaan dan penjadwalan perbaikan ini diharapkan mesin mempunyai lifetime yang panjang, serta mengurangi downtime dan biaya untuk merawatnya.
Analisis Manajemen Maintenance pada Mesin Press Hitachi Zosen 2000 Ton di PT. X dengan Metode Overall Equipment Effectiveness (OEE) Ardhali, Zaelan Muhammad; Kamald, Dianta Mustofa
Seminar Nasional Teknik Mesin 2019: Prosiding Seminar Nasional Teknik Mesin 2019
Publisher : Politeknik Negeri Jakarta

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Abstract

PT. X merupakan perusahaan manufaktur otomotif yang bergerak dibidang pembuatan frame chassis dan pressed part. Manajemen perawatan kurang optimal seringkali terjadi Breakdown selama 1652 menit pada bulan maret 2019, dan tingkat efektivitas peralatan keseluruhan sebesar 80,61%, penelitian ini bertujuan untuk menentukan nilai OEE dan menentukan losses yang mempengaruhi efektivitas pada mesin press Hitachi Zosen 2000 Ton di PT. X. Hasil perhitungan losses yang terjadi dilakukan dengan metode analisis Six Big Losses sebagai dasar saran perbaikan dengan pendekatan 8 pilar TPM untuk meningkatkan efektivitas maintenance dan mesin produksi. Nilai OEE periode 3 bulan berada di bawah nilai 85%, standar JIPM (Japan Institute of Plant Maintenance). Nilai rata-rata OEE periode 3 bulan mesin press Hitachi Zosen 2000 Ton adalah 84,38%. Hasil analisis six big losses menunjukkan besar losses yang mempengaruhi rendahnya nilai OEE mesin press Hitachi Zosen 2000 Ton adalah reduced speed losses, set up and adjustment losses, idle and minor stoppage, dan breakdown losses. Losses terbesar adalah set up and adjustment losses, set up and adjustment losses merupakan kerugian dari Availability yang menyebabkan rendahnya nilai OEE.
PENAMBAHAN SERBUK AMPAS KOPI SEBAGAI UPAYA MENINGKATKAN NILAI KALOR BRIKET LIMBAH KERTAS Dianta Mustofa Kamal
Jurnal Inovasi Penelitian Vol 2 No 12: Mei 2022
Publisher : Sekolah Tinggi Pariwisata Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47492/jip.v2i12.1494

Abstract

Abstrak Briket yang dihasilkandarikertasbekasdikenalkarenanilaikalorinya yang rendah. Nilai kalorbriketdarikertasbekasberada pada urutankeempatsetelahlimbahkayu, arang dan serbukgergaji. Oleh karenaitu, diperlukanperbandingankomposisicampuran yang tepatuntukmenghasilkannilaikalor yang lebihtinggi. SerbukAmpas Kopi (SAK) dipilihsebagaibahantambahandalamkomposisicampuranbiomassakarena SAK memilikinilaikalor yang tinggi dan mudahditemukan. Tujuan daripenelitianiniadalahuntukmenemukanrasio yang tepat yang dapatmeningkatkannilaikalorbriket yang terbuatdarikertasbekas, berdasarkanpengujian dan analisisproksimat. Ada empatkomposisisampelcampuran yang digunakandalampenelitianini. Komposisicampuranpertamaadalah 90% kertasbekas dan 10% perekat; yang keduaadalah 70% kertasbekas, 20% SAK dan 10% perekat; komposisicampuranketigaadalah 50% kertasbekas, 40% SAK, 10% perekat; dan komposisicampurankeempatmeliputi 30% kertasbekas, 60% SAK dan 10% perekat. Hasil penelitianmenunjukkanbahwasemakinbesarrasio SAK yang digunakandalamkomposisiakanmenghasilkannilaikalor yang lebihtinggihanyasajabriketsemakinrapuh. Hasil penelitianmenyimpulkanbahwabriketmencapaiperformaterbaiknya pada komposisicampuran 40% SAK. Pada rasio yang diusulkan, brikettidakrapuh, dan menghasilkannilaikalori 5,366 kkal/kg; 6,58% kadar air; 5,37% kadarabu; 28,28% daribahan yang mudahmenguap; dan 8,91% dariindekspecah. Oleh karenaitu, komposisi yang dipelajaridapatdipertimbangkanuntukmenghasilkanbriketbiomassa yang paling efisien yang terbuatdarikertasbekas.
Desain Media Interaktif (Interactive Dashboard) Sentralisasi Data Total Productive Maintenance di 44 Unit Cilacap Plant PT Solusi Bangun Indonesia Tbk Windu Asri Mumpuni; Dianta Mustofa Kamal; Agustinus Herwibawanto
Jurnal Mekanik Terapan Vol 2 No 2 (2021): November 2021
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v2i2.4421

Abstract

Industri semen tidak terlepas dari maintenance, data mengenai management perawatan fasilitas menjadi penting untuk diketahui semua orang agar bisa selalu memantau kondisi equipment dan lingkungan pabrik apabila terjadi abnormalitas, namun di PT Solusi Bangun Indonesia Tbk, Cilacap Plant masih menggunakan metode konvensional (paperbased) dalam record perawatan, hal ini kurang efektif dan efisien maka dari itu dilaksanakan proyek pembuatan media interaktif sebagai sentralisasi data dengan mengembangkan kaidah industri 4.0. Media interaktif (interactive dashboard) total productive maintenance bertujuan untuk mensentralisasi data terkait management perawatan fasilitas. Media interaktif ini dibuat dengan memanfaatkan google Apps seperti google form, google site, serta google spreadsheet dan formula yang terdapat di dalamnya dan disatukan dalam bentuk website yang dikemas dalam bentuk QR code.Output yang dihasilkan yaitu website untuk menampilkan informasi mengenai jadwal dan prosedur perawatan mesin dan atau fokus area tertentu. Management lebih mudah untuk menilai dan memberikan review terkait pekerjaan yang berhubungan dengan TPM di lapangan dengan hanya melalui satu genggaman saja
Characteristics of Addition of Activated Carbon and Bentonite Clay Catalysts in the Pyrolysis of Polyethylene Terephthalate Plastic Waste Dianta Mustofa Kamal
Jurnal Energi dan Teknologi Manufaktur Vol 5 No 01 (2022)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v5i01.111

Abstract

The increase in the use of plastic results in an increase and accumulation of the volume of plastic waste which causes environmental problems, because plastic is an inorganic material that is very difficult to decompose in nature. This research was conducted to utilize Polyethylene Terephthalate (PETE) plastic waste into liquid fuel by pyrolysis method using a catalyst in order to increase the yield of liquid products and the quality of the liquid fuel produced. The research method is carried out by making a simple reactor to obtain liquid fuel, after the product is produced, the yield is calculated, and the density, viscosity, and calorific value are tested. The results of this study prove that the use of bentonite clay catalyst produces a higher yield of about 4.1% to 6.7% than the use of activated carbon catalyst with a yield of 21.74% and a heating value ranging from 10572 to 10860 cal/ g. Likewise, the density and viscosity of the product are still classified as meeting the quality standards of commercial fuel oil (BBM).
Analisis Flame Temperatur Terhadap Magnetisasi Campuran Bahan Bakar Bensin Dan Bioetanol Pada Mesin Bensin Dianta Mustofa Kamal
JTM-ITI (Jurnal Teknik Mesin ITI) Vol 6, No 1 (2022): JTM-ITI (Jurnal Teknik Mesin ITI)
Publisher : Institut Teknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.283 KB) | DOI: 10.31543/jtm.v6i1.718

Abstract

Telah dilakukan perhitungan flame temperature pada bahan bakar campuran bensin dan bioethanol. Flame temperature diperlukan untuk mengetahui berapa besar panas yang terjadi ketika bahan bakar tersebut dibakar. Secara tidak langsung flame temperature ini  akan  mempengaruhi emisi gas buang. Hal lain yang dapat  mempengaruhi emisi gas buang adalah magnetisasi bahan bakar. Penelitian ini bertujuan untuk menganalisis seberapa besar efek flame temperature dan magnetisasi bahan bakar terhadap emisi gas buang. Penelitian dilakukan secara eksperimen. Sampel yang digunakan merupakan campuran antara bensin dengan bioetanol, komposisinya adalah E10 (10% bioetanol + 90% bensin), E20 (20% bioetanol+80% bensin), E30(30% bioetanol+70% bensin). Dan sebagai pegontrolnya digunakan bahan bakar bensin murni. Mesin bensin yang digunakan adalah sepeda motor 4 tak,125cc. Kekuatan magnet sebesar 1416 Gauss dipasang diantara tangki bahan bakar dan injector. Hasilnya magnetisasi bahan bakar menyebabkan terjadinya peningkatan flame temperature sebesar 7-15%. Dan penurunan emisi gas buang sebesar 50%. 
Pengembangan Model Pembangkit Listrik Tenaga Picohydro Tipe Turbin Cross Flow Head Rendah Gun Gun R Gunadi; Jusafwar; Candra Damis Widiawaty; Machfud Priyo Utomo; Ramdana Ajie Satria; Muhammad Raihan Abimanyu; Adi Syuriadi; Dianta Mustofa Kamal; Rosidi
Infotekmesin Vol 13 No 2 (2022): Infotekmesin: Juli, 2022
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v13i2.1527

Abstract

The provision of food, energy supply, and the provision of information are The food provision, energy supply, and information delivery are controlled to improve people's welfare. In 2011, the national electricity production by PLN was 11% new and renewable energy. 6% hydropower and 5% geothermal. PLN plans the geothermal to be 13% and hydropower to be 6%. The availability of independent PhPP has been built by many communities. PhPP with a waterwheel drive provides a capacity of about 100 watts thus it is only enough for home lighting, whereas the hydro energy potential of the area is quite abundant. The development that has been carried out has several weaknesses; PhPP plump turbine type requires a high head which becomes a constraint for agricultural irrigation, in the other hand PhPP waterwheel type has low efficiency. The research was conducted to develop PhPP low head cross-flow turbine type, which is more efficient. The development begins with the experiment of the PhPP cross-flow turbine model to optimize the ratio of the diameter and width of the runner. A preliminary case study provides experimental results for a cross-flow turbine's torque and power parameters at a flow rate of 0.053 m3/s. Changes in the turbine diameter and width ratio are optimum at a runner width of 10 cm.
COMPARISON OF THE FUEL CALORIFIC VALUE FROM PLASTIC PYROLYSIS WITH COMMERCIAL FUEL Dianta Mustofa Kamal
Jurnal Energi dan Teknologi Manufaktur Vol 5 No 02 (2022)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v5i02.123

Abstract

Plastic, which is originated from petrolum, is possible to turn it to alternative fuel. Moreover in 2008, the estimated amount of midden in Indonesia reached 38.5 million tons per year with the largest compositions are organic waste (58%), waste plastics (14%), waste paper (9%) and wood waste (4%) (Ministry of Environment, 2008). Meanwhile in Depok City, the amount of waste which goes to Depok City’s landfill waste is 350-400 tonnes / day (Head of Technical Unit Landscape Depok City Sanitation Department, 2012). From the data, above, can be confirmed using plastic waste as an alternative fuel can be superior because plastic waste is the raw material which is cheap, easily processed, and can reduce environmental pollution. The processing of plastic waste into fuel conversion is done using a plastic waste machine with a continuous system, the working principle of heating at high temperature. Tests which are conducted in this study is to test the octane rating by bomb calorie meter, test anylizer gas emissions, and test octane gas chromatography. Plastic waste fuel, which is the outcome from plastic waste conversion machine with continuous system, can be used as fuel for vehicles, it is because the plastic oil calorific value 10 519 cal / g equivalent calorific value premium. This research is expected to address the scarcity of fossil fuels, and increasing public awareness of using alternative fuel, especially plastic waste fuel.
Measurement of Oxygen Concentration in Static and Flowing Liquid Pb-Bi by Using Zirconia Based Sensor Pribadi Mumpuni Adhi; Dianta Mustofa Kamal; Muslimin Muslimin; Andrei Vilcu; Masatoshi Kondo; Minoru Takahashi
Indonesian Journal of Physics Vol 31 No 1 (2020): Vol 31 No 1 (2020)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (632.205 KB) | DOI: 10.5614/itb.ijp.2020.31.1.1

Abstract

Liquid Lead-Bismuth Eutectic (LBE) has been proposed as one of the coolant for the Generation IV nuclear reactor. However, the oxygen should be controlled adequately to suppress the corrosion rate of the LBE. A device called oxygen sensor made of zirconia as solid electrolyte has been used to monitor the oxygen concentration online in order to control the oxygen concentration. The principle of this sensor is based on electrochemistry method where the difference oxygen activitiy between reference electrode (RE) and working electrode (in liquid LBE) can make potential difference. The potential difference is measured by electrometer and can be converted into oxygen concentration based on Nernst equation. Iron (Fe)/Magnetite (Fe3O4) was used as material for RE in this study. Measurement of oxygen concentration was conducted at 450 - 600°C for the static condition of LBE and around 390°C for the dynamic condition of flowing LBE. The oxygen concentration for both two experiment conditions were set in oxygen saturated condition of Pb-Bi. The oxygen sensor based on zirconia solid electrolyte with Fe/Fe3O4 as RE can measured the oxygen concentration in liquid LBE. The results showed that the measurement was agreed with the Nernst equation theoretical calculation.
Computational analysis of magnetohydrodynamic effects on biodiesel flow rate Tatun Hayatun Nufus; Candra Damis Widiawati; Ahmad Indra Siswantara; Gun Gun Ramdlan Gunadi; Dianta Mustofa Kamal; Asep Apriana; Dela siska; Bayu Prasetio; Irfan Hermansyah Saputra
Jurnal POLIMESIN Vol 21, No 2 (2023): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i2.3292

Abstract

The purpose of this research  is to determine the velocity characteristics of fluid (fuel) flow in a pipe surrounded by a minimal magnetic (electromagnetic) field strength by using computational fluid dynamics simulations. For a more detailed discussion, Magnetohydrodynamics (MHD) theory is used, which is a branch of science that studies fluid flow that can conduct electric current due to the influence of a magnetic (electromagnet) field. The fuel used is B0, B10, B20 and B30. The magnitude of the electromagnetic field used is 0.15 Tesla. the result is that the flow rate of B0 fuel has decreased by 0.623%. B10 fell to 0.41%. The B20 was down 0.618% and the B30 was down 0.648%. Thus the magnetic field strength of 0.15 Tesla is able to change the speed of the fuel flow even if only slightly. This information is needed as a basis for the development that the magnetic field is able to change the value of the flow velocity, this will provide information related to improving the quality of combustion and fuel savings in the future.
Co-Authors Abdul Aziz Assayuti Adi Syuriadi Agus Rofi’i Agustinus Herwibawanto Ahmad Indra Siswantara Almahri, Alif Fiqih Aminudin Zuhri Andi Tenri Abeng Andrei Vilcu Ardhali, Zaelan Muhammad Asep Apriana Bayu Prasetio Benhur Nainggolan Candra Damis Widiawati Candra Damis Widiawaty Dela siska Gun Gun R Gunadi Gunadi, Gun Gun Ramdlan Iman Setyadi Irfan Hermansyah Saputra Isrina Siregar Jusafwar Machfud Priyo Utomo Masatoshi Kondo McCarty Elliot Minoru Takahashi Muhammad Raihan Abimanyu Murphy Xavier Muslimin Muslimin Nur Ani Paulus Sukusno Pramono, Agus Edy Pribadi Mumpuni Adhi Ramdana Ajie Satria Rosidi Sisilia Prima Tatun Hayatun Nufus Tita Rosalina Windu Asri Mumpuni Yana Priyana Yenik Pujowati