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All Journal IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
M. Fazri Pasaribu
Universitas Harapan Medan
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Lingkungan Kerja Berdasarkan Tingkat Kebisingan Mesin di PT. Grahadura Leidong Prima Jenny Maruli Tambun; M. Fazri Pasaribu; Abdul Azis Syarif
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 2 No 1 (2023): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v2i1.36

Abstract

The production process at PT. Grahadura Leidong Prima uses production equipment that has the potential to cause noise. Officers who operate the equipment are environmental components that are directly affected by the increase in noise. It is alleged that many company employees experience hearing loss when working in these units. This study aims to evaluate the noise in the work unit and determine the effect of noise felt by employees. The research was conducted by directly measuring noise sources for 3 shifts using a sound level meter. Measurements were made at a distance of about 1 m from the noise source at various positions and carried out manually every 5 minutes with an interval of 5 seconds, at maximum operating capacity. In addition, observations were also carried out on employees related to the impact felt while in the factory environment, as well as analyzing medical record data for employees who had worked in the unit. The results of data processing indicate that the machine has a noise level that exposes employees during working hours to exceeding the threshold value, where the noise level is 89.7 dB at the Sterilizer station, 89.6 dB at the Thresser station, while the highest noise level is at Press station 92.3 dB. With noise levels that exceed the threshold value, noise control is carried out using personal protective equipment (PPE) for each employee.
Penerapan Lean Manufacturing dengan Menggunakan Value Stream Mapping untuk Mengidentifikasi dan Mengurangi Waste di Gudang PT Manhattan Marlen Feri Pardosi; Riana Puspita; M. Fazri Pasaribu
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 2 No 2 (2023): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v2i2.48

Abstract

PT Manhattan is one of the companies engaged in services that provide apartments, supermarkets, cinemas, and food. This research was conducted in a logistics warehouse, where the problem is the problem of time when storing products in the warehouse. Value Stream Mapping is a design method to reduce the time problem so that it gets the best design. The results of the calculation using the Value stream mapping method to get an efficient improvement design from the actual condition. Then 2 activities are part of the value stream mapping and these two activities are included in the category of non-value-added activities. While operational activities include value-added activities, the total time required for value-added activities is 9,660 seconds, while the time required for non-value activities is 5,100 seconds. So the activity mapping process required for value-added activity is 618,890 seconds while the time required for non-value-added activity is 30,520 seconds from the initial condition. With this research, it is expected that logistic warehouses can arrange and use time as quickly and efficiently as possible so that they can facilitate warehouse activities.  
Co-Authors Jenny Maruli Tambun Marlen Feri Pardosi Riana Puspita