Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal J@TI (TEKNIK INDUSTRI) Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan
Manik Mahachandra
Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Industrial & Manufacturing Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
PERBAIKAN SISTEM KERJA BERDASARKAN ANALISIS PAJANAN XYLENE PEKERJA KILANG MINYAK XYZ Yusita Attaqwa; Manik Mahachandra; Heru Prastawa
J@ti Undip: Jurnal Teknik Industri Vol 16, No 4 (2021): Edisi Khusus ACISE 2021
Publisher : Departemen Teknik Industri, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.828 KB) | DOI: 10.14710/jati.16.4.249-255

Abstract

Perusahaan Pertambangan Minyak dan Gas Bumi Negara (Pertamina) mengoperasikan beberapa kilang minyak di dalam negeri. Operasi dan proses di kilang minyak terdapat bahan kimia dalam bensin, maka penting untuk mengukur konsentrasi xylena, melihat mana yang mempengaruhi dan memberikan perbaikan desain untuk tindakan kesehatan dan keselamatan kerja yang tepat. Pengambilan sampel dilakukan pada 16 pekerja yang memiliki risiko terpapar xylene lebih tinggi. Tata cara pengambilan dan analisis sampel mengacu pada Gastec 122DL. Pengujian yang digunakan untuk menganalisis fakta menggunakan uji beda dan uji pembeda. Pekerja pada pekerja kilang minyak yang terpengaruh signifikan terhadap konsentrasi paparan xylene adalah usia (U = 13,329), praktik K3 (U = 26,124), penggunaan APD (U = 9,042), kebiasaan merokok (U = 85), jumlah bensin yang tersedia (U = 0,891) dan instalasi (U = 18,032). Rancangan perbaikan yang dapat diwujudkan dalam jangka pendek adalah penggunaan APD dan berdiri berlawanan arah angin.Abstract[Improvement on Working System Based on Xylene Exposure Analysis on Employee of  Oil Refinery XYZ] The State Oil and Gas Mining Company (Pertamina) operates several oil refineries in the country. Operations and processes at oil refinery contain chemicals in gasoline. So, it is important to measure the concentration of xylene concentration, see which affects and provide design improvements for appropriate occupational health and safety measures. Sampling was carried out on 16 workers who had a higher risk of xylene exposure. The procedure for taking and analyzing samples refers to Gastec 122DL. The test used to analyze the facts uses the difference test and display test. Workers at oil refinery. Workers who have a significant effect on the concentration of xylene exposure are age (U = 13,329), K3 practice (U = 26,124), use of PPE (U = 9,042), smoking habits (U = 85), the amount of gasoline available (U = 0.891) and installation (U = 18.032). The design of improvements that can be realized in the short term is the use of PPE and standing in opposite directions the wind.Keywords: exposure analysis; repair work system; Xylene.
Thermal Comfort and Cognitive Performance under Glass Facade Buildings Ega Rizkiyah; Manik Mahachandra; Ratna Purwaningsih; Heru Prastawa; Wiwik Budiawan
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 20, No 3 (2023): November 2023
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v20i3.523-533

Abstract

Glass is one of the most adaptable modern materials. However, the use of glass can have unfavorable effects such as glare, heat, and discomfort. This study focuses on the issue of designing contemporary glass buildings and facades in humid tropical environments to evaluate the thermal comfort of building occupants and assess its effects on the completion of cognitive tasks. The Wet-Bulb Globe Temperature (WBGT) parameter was used to measure thermal comfort, and the ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers) scale was used to assess thermal comfort perception. The Montreal Cognitive Assessment was used to assess eight female respondents’ cognitive abilities, and the cut-off point was 26. The WBGT has a temperature range of 25, 54°–28, 83°C, in terms of thermal sensation, 54% of respondents feel hot and 62% are uncomfortable. In the completion of cognitive tasks, 75% received a score of less than 26. The results show that there is an effect of thermal comfort on cognitive performance. Due to respondents feeling uncomfortable in high-rise buildings with glass facades, as well as with cognitive outcomes that are below the cut-off point, recommendations for improvement are needed to increase thermal comfort, such as double glass facades.
Co-Authors Ega Rizkiyah Heru Prastawa Ratna Purwaningsih Wiwik Budiawan Yusita Attaqwa