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All Journal Jurnal Teknik Terapan (J-TETA) International Journal of Health and Information System (IJHIS)
Salsabila Liandra Putri
Politeknik Negeri Jember
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Health Professions Industrial & Manufacturing Engineering Library & Information Science Mechanical Engineering Medicine & Pharmacology Public Health

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Factors Related to Hearing Threshold of Workers at PT. X Salsabila Liandra Putri; Nuzula Afianah
International Journal of Health and Information System Vol. 1 No. 2 (2023): September
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/ijhis.v1i2.18

Abstract

Physical hazards are one of the several types of dangers in Occupational Health and Safety. Companies or industries that use machines in their work processes have the potential to cause a physical hazard. One of the physical hazards is noise. Noise exposure can have an impact on employee health, namely hearing loss. A decrease in hearing threshold values can cause communication disorders and concentration problems. Variables of sound intensity, period of work, age, and disease history can influence the reduction in hearing threshold values. The results of a preliminary study on workers at PT. X indicates the sound intensity is above the threshold value, namely 86dB and 16.6% of workers experience hearing loss. The aim of this research is to determine the factors related to the hearing threshold values of workers at PT. X. The methodology in this research uses a cross-sectional approach. This study had 30 workers as samples using total sampling techniques. The results showed that the sound intensity factors (ρ = 0.030) and disease history (ρ = 0.013) were related to the hearing threshold value. Meanwhile, the factors of work experience (ρ = 0.704) and age (ρ = 1.000) are not related to the hearing threshold value. The conclusion of this research is that there is a relationship between sound intensity and history of illness with the hearing threshold value of workers at PT. X.
Analisis Desain Incinerator Pirolysis Fuel Reactor (IPFR) Limbah Plastik Sebagai Bahan Bakar Alternatif Aditya Wahyu Pratama; Ahmad Rofi'i; Nuzula Afianah; Salsabila Liandra Putri
Jurnal Teknik Terapan Vol. 2 No. 1 (2023): April
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jteta.v2i1.5

Abstract

In Indonesia, plastic waste has become an important problem at this time, because it causes environmental pollution problems. With this, further action is needed regarding the treatment of waste utilization, one of which is by converting waste into liquid fuel. Some types of rubbish that we often encounter are plastic bottles such as plastic cups, plastic bottle caps, children's toys and margarines and others, which is one of the types of PP (polypropylene) waste. The development of current plastic waste treatment technology is to convert plastic waste into fuel oil by utilizing plastic waste to be processed as plastic fuels such as premium fuel, diesel and kerosene. Polypropylene type plastic is the type of plastic that is most widely used in daily life because it has good mechanical properties with low density, heat and moisture resistance, and has good dimensional stability. Some of the technology used to convert plastic waste, among others, by using the method of high temperature (Thermal Cracking). In this study, researchers designed a Thermal cracking device, namely an Incinerator, a plastic waste smelter with high temperature, where the modification of this tool is to use used fuel oil or residual oil. In this study, the researcher analyzed the burning time, the amount of waste mass needed for the melting process in the Incinerator. In this research, a fuel equivalent of 1.5 liters of premium fuel was produced with 10 kg of plastic waste burned in the incinerator with a burning time of 125 minutes of the pyrolysis process, with a combustion temperature of 180-250 degrees Celsius.
Co-Authors Aditya Wahyu Pratama Ahmad Rofi'i Nuzula Afianah