Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)

Korean Industrial Hygiene Association (한국산업보건학회)
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Real-time TVOC Monitoring System and Measurement Analysis in Workplaces of Root Industry

뿌리산업 작업장내 총휘발성유기화합물류(TVOC) 실시간 노출감시체계 구축과 농도 분석

  • Jong-Hyeok, Park (Department of Convergence IT Engineering, Pohang University of Science and Technology) ;
  • Beom-Su, Kim (Department of Convergence IT Engineering, Pohang University of Science and Technology) ;
  • Ji-Wook, Kang (Department of Convergence IT Engineering, Pohang University of Science and Technology) ;
  • Soo-Hee, Han (Department of Convergence IT Engineering, Pohang University of Science and Technology) ;
  • Kyung-Jun, Kim (Department of Convergence IT Engineering, Pohang University of Science and Technology)
  • 박종혁 (포항공과대학교 창의IT융합공학과) ;
  • 김범수 (포항공과대학교 창의IT융합공학과) ;
  • 강지욱 (포항공과대학교 창의IT융합공학과) ;
  • 한수희 (포항공과대학교 창의IT융합공학과) ;
  • 김경준 (포항공과대학교 창의IT융합공학과)
  • Received : 2022.12.02
  • Accepted : 2022.12.27
  • Published : 2022.12.30
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Abstract

Objectives: This study analyzes TVOC concentrations in root industry workplaces in order to prevent probable occupational disease among workers. Root industry includes all the infrastructure of manufacturing, such as casting and molding. Methods: Real-time TVOC sensors were deployed in three root industry workplaces. We measured TVOC concentrations with these sensors and analyzed the results using a data-analysis tool developed with Python 3.9. Results: During the study period, the mean of the TVOC concentrations remained in an acceptable range, 0.30, 2.15, and 1.63 ppm across three workplaces. However, TVOC concentrations increased significantly at specific times, with respective maximum values of 4.98, 28.35, and 26.65 ppm for the three workplaces. Moreover, the analysis of hourly TVOC concentrations showed that during working hours or night shifts TVOC concentrations increased significantly to higher than twice the daily mean values. These results were scrutinized through classical decomposition results and autocorrelation indices, where seasonal graphs of the corresponding classical decomposition results showed that TVOC concentrations increased at a specific time. Trend graphs showed that TVOC concentrations vary by day. Conclusions: Deploying a real-time TVOC sensor should be considered to reflect irregularly high TVOC concentrations in workplaces in the root industry. It is expected that the real-time TVOC sensor with the presented data analysis methodology can eradicate probable occupational diseases caused by detrimental gases.

Keywords

Acknowledgement

이 논문은 2022년도 정부(과학기술정보통신부)의 재원으로 정보통신기획평가원의 지원((No. 2022-0-00120, 작업장 내 미세먼지 등 공기질의 유해성 및 작업가능여부 판단을 위한 작업자의 통합 웨어러블 디바이스 핵심기술 개발)과 2022년도 정부(교육부)의 재원으로 한국연구재단의 지원을 받아 수행 연구임(No. NRF-2022R1I1A1A01066264, 차세대 AIoT 디바이스 연결성 보장을 위한 6G LiFi 네트워킹 기술 연구).

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