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Jurnal Optimalisasi
Published by Universitas Teuku Umar
ISSN : 24775479     EISSN : 25020501     DOI : https://doi.org/10.35308/jopt
Core Subject : Engineering,
Control & Systems Engineering Industrial & Manufacturing Engineering
JURNAL OPTIMALISASI (JOPT) merupakan jurnal elektronik online yang diterbitkan oleh Program studi Teknik Industri, Fakultas Teknik, Universitas Teuku Umar. JOPT memuat kajian dibidang Manufaktur, Ergonomi dan Manajemen Rantai Pasok. Tujuan penerbitan jurnal optimalisasi adalah sebagai wadah publikasi yang mewadahi kebutuhan peningkatan kualitas karya ilmiah dalam rangka pengembangan keilmuan dan menyebarluaskan kajian bidang ilmu Teknik Industri, sekaligus sebagai wahana komunikasi diantara cendekiawan, praktisi, mahasiswa dan pemerhati masalah Industri. JOPT terbit dua kali dalam setahun, tepatnya pada bulan April dan Oktober. Bagi pembaca, penulis, dan yang melakukan akses situs jurnal yang ingin submit naskah ke jurnal ini, silakan mendaftar sebagai author kemudian login untuk submit naskah. Informasi penulisan dan submit naskah dapat diakses di author guidelines dengan mengikuti pentunjuk di situs jurnal.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 6 Documents
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Search results for , issue "Vol 4, No 2 (2018): Oktober" : 6 Documents clear
IDENTIFIKASI SENYAWA TANIN PADA DAUN BELIMBING WULUH (Averrhoa bilimbi L.) Yusi Hidjrawan
Jurnal Optimalisasi Vol 4, No 2 (2018): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v4i2.1475

Abstract

This study aims to identify tannin compounds in the leaves of starfruit (Averrhoa bilimbi L.) and to find out the benefits of starfruit leaves. starfruit leaf extract obtained through starfruit leaves crushed first, then added a solution of methanol and then filtered using filter paper, then extracts of starfruit leaf extract divided into two test tubes, in which one tube is dripped with iron (III) chloride. The results showed that, the color of the wuluh starfruit leaf extract which was originally brownish yellow turned blackish blue. It can be concluded that the starfruit leaves of tannin compounds were identified. Tannin compounds function to bind and precipitate protein. So that in health tannins function to treat diarrhea, treat hemorrhoid, stop inflammation and also can be a natural alternative to cleaning artificial teeth.
INTEGRASI OVERALL EQUIPMENT EFFECTIVENESS (OEE) DAN FAILURE MODE AND EFFECT ANALYSIS (FMEA) UNTUK MENINGKATKAN EFEKTIFITAS MESIN SCREW PRESS DI PT. BEURATA SUBUR PERSADA KABUPATEN NAGAN RAYA Fitriadi Fitriadi; Muzakir Muzakir; Suhardi Suhardi
Jurnal Optimalisasi Vol 4, No 2 (2018): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v4i2.1524

Abstract

This study aims to identify the Integration of Overall Equipment Effectiveness (OEE) and Failure Mode And Effect Analysis (FMEA) to Increase the Effectiveness of Screw Press Machines at PT. Beurata Subur Persada Nagan Raya Regency. Based on the results of the study showed that the effectiveness of the Screw Press for PT. Beurata Subur Persada is still in the effective category with an average Overall Equipment Effectiveness value of 86.14 percent. This means that the screw press machine used is still very effective in the process of pressing the FFB. From the results of the analysis of the six big lose factor, it can be seen that Reduced speed losses is a very significant factor in the decline in OEE values on screw press machines with an average of 52.69% or with a time of 130.47 minutes. The results of the FMEA analysis show that the RPN value the biggest is 180 in the breakdown losses for the type of broken shift failure then the second largest is 120 in the reduced speed losses for the type of failure the engine speed is reduced. The results of the FMEA weighting with the largest RPN (risk priority number) for each category are 180 and 120. Based on these results it is necessary to propose improvements to reduce the breakdown losses and reduced speed losses in the highest repair priority, namely broken beds and reduced engine speeds. Overcoming these problems can be done by doing preventive maintenance on a regular basis once a week to prevent damage by dismantling the machine and re-installing and tightening or replacing new components.
PENENTUAN JUMLAH TENAGA KERJA OPTIMAL MELALUI PENGUKURAN WAKTU BAKU DENGAN MENGGUNAKAN METODE STOPWATCH TIME STUDY PADA PEMBUATAN BATU BATA PRESS (STUDI KASUS UD. TIGA SETANGKAI KABUPATEN NAGAN RAYA) Fitriadi, Fitriadi; Putra, Gaustama; Abdullah, Ali
Jurnal Optimalisasi Vol 4, No 2 (2018): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v4i2.1497

Abstract

This study aims to determine the optimal number of workers in accordance with the needs of the company and determine the standard time needed for the brick making process. The method used in this study is the stopwatch time study method in which this method is applied to work that lasts briefly and repeatedly (repetitive. Based on the results of the study shows that the optimal amount of labor that should be employed in accordance with the needs of companies in making stone brick press at each work station that is 2 workers with details of workers at the clay excavation station labor that should be employed that is amounting to 2 people, the station put clay into the press machine labor that should be employed that is amounting to 2 people, printing station power the work that should be employed is numbered 2 people, the work station compiles the printout into the wheelbarrow the manpower that should be employed is amounting to 2 people, and the work station compiles the press bricks to the place where the workforce should be employed which is the sum 2 people where the actual number of workers is only 3 people where of the three workers concurrently doing work activities, with the addition of the workforce at each station 1 workforce is expected to achieve production targets and can meet product demand every month at UD. Three Sets of Nagan Raya Regency. The standard time needed for the clay excavation station is 54.78 minutes, the standard time required for the station to enter clay into the press is 41.43 minutes, the standard time required for the brick press molding station is 43.03 minutes, the standard time needed at the work station to compile the printed material into the wheelbarrow is 55.86 minutes, while the standard time required at the work station to compile the brick press to the drying area is 50.17 minutes.
IMPLEMENTASI STATISTICAL PROCESS CONTROL UNTUK PENGENDALIAN KUALITAS GARAM TRADISIONAL DI KABUPATEN PIDIE Pamungkas, Iing; Irawan, Heri Tri; Arkanullah, Lian
Jurnal Optimalisasi Vol 4, No 2 (2018): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v4i2.1525

Abstract

Pidie is one of the districts that has a large coastline and is widely used for traditional salt production. Pidie Regency has a salt production business with total production reaching 449.05 tons / month, and production area has reached 28.74 hectares with 451 salt farmers. The problem faced in the traditional salt production business in Pidie District is that there is no integrated quality control in the results of traditional salt production. The purpose of this study is to apply statistical process control methods to control the quality of traditional salt in the salt business group of the Saho Adab community in Keude Ie Leubeu Village, Kembang Tanjong District, Pidie Regency. Statistical process control is a statistical analysis technique used to ensure that processes meet standards. Statistical process control techniques in this study will use three quality control tools, namely pareto diagrams, control charts, and cause effect diagrams. After controlling the quality of salt in the Saho Adab Pidie District using statistical process control techniques as seen from the control map, no salt sample data were found that went out of control limits. Whether it's for NaCl levels or salt particle size. Factors affecting the quality of salt production such as human, machine, material, method and environment factors.
ANALISIS LEAN SERVICE UNTUK MENGURANGI WASTE PADA PERUSAHAAN DAERAH AIR MINUM (PDAM) TIRTA MOUNTALA ACEH BESAR Heri Tri Irawan; Iing Pamungkas; Arhami Arhami
Jurnal Optimalisasi Vol 4, No 2 (2018): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v4i2.1498

Abstract

Tirta Mountala Regional Water Company (PDAM) is a regional company that has a concentration in the field of water supply. This study aims to implement Lean Service at PDAM Tirta Mountala in an effort to reduce waste in the service of installing new pipe connections. The method used in the study uses Big Picture Mapping and Root cause analysis in finding the causes of waste. The study was conducted in several stages, namely preliminary observations then continued with determining the use of the methods used, collecting data, conducting data processing, analyzing the results of data processing and finally concluding the results of the research, as well as being reviewed from lean service theories, The Waste that occurs is Over Production, Defect, Unnecessary Inventory, Inappropriate Processing, Excessive Transportation, Waiting, Unnecessary Motion. While the critical waste that occurs in the service process is waiting with a weight of 0.36. Waste waiting is caused by mechanical power delay, material repair delay, delay in repairing pipelines passing through public spaces. By knowing the types of waste and critical waste in PDAMs, it is expected to reduce waste and customer satisfaction is fulfilled.
SIMULASI MONTE CARLO UNTUK MENENTUKAN KEANDALAN PADA BAGIAN BOILER DI PEMBANGKIT LISTRIK BERBASIS BATUBARA Iing Pamungkas; Heri Tri Irawan; Arhami Arhami; Muhammad Dirhamsyah
Jurnal Optimalisasi Vol 4, No 2 (2018): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v4i2.1505

Abstract

PT. PLN (Persero) currently uses a lot of coal-based power plants or Steam Power Plants (PLTU) in carrying out its operational activities. Aceh Province has a PLTU located in Nagan Raya Regency and is owned by PT. PLN (Persero). The Nagan Raya power plant has two generating units with an installed capacity of 2x110 Megawatts. The highest frequency of interference or damage experienced by the boiler section and this is very influential on the Nagan Raya PLTU production system. Performance evaluation in terms of reliability is needed to minimize interference or damage. The purpose of this study is to determine the level of reliability using Monte Carlo simulations on each important component of the boiler section. Monte Carlo simulations will be used to predict the time between failure or time to failure (TTF) and time to repair (TTR) so that the level of reliability can be predicted in the future. Monte Carlo simulations basically produce uniformly distributed random numbers (0.1) and then convert them into non-uniform distributions using the inverse transformation method. Monte Carlo simulation results on eight critical components in the boiler section obtained time to failure (TTF) obtained were 260 hours to 1312 hours with a reliability value of 30% to 42%. While the time to repair (TTR) is 1,57 hours to 2,26 hours with a reliability value of 22% to 41%.

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