Helmet-Mounted Real-Time Toxic Gas Monitoring and Prevention System for Workers in Confined Places
Occupational health and safety hazards associated with confined places are mainly caused by exposure to toxic gases and oxygen deficiency. Lack of awareness, inappropriate monitoring, and improper evacuation methods can lead to worker fatalities. Although previous studies have attempted to develop s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/3/1590 |
| _version_ | 1797623197210771456 |
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| author | Janani Priyanka Perumpally Rajakumar Jae-ho Choi |
| author_facet | Janani Priyanka Perumpally Rajakumar Jae-ho Choi |
| author_sort | Janani Priyanka Perumpally Rajakumar |
| collection | DOAJ |
| description | Occupational health and safety hazards associated with confined places are mainly caused by exposure to toxic gases and oxygen deficiency. Lack of awareness, inappropriate monitoring, and improper evacuation methods can lead to worker fatalities. Although previous studies have attempted to develop systems to solve this issue, limited research is available on their application in confined places. In this study, a real-time helmet-mounted system was developed to monitor major toxic gases (methane (CH<sub>4</sub>), hydrogen sulfide (H<sub>2</sub>S), ammonia (NH<sub>3</sub>), and carbon monoxide (CO)), oxygen, temperature, and humidity. Workers outside and inside confined spaces receive alerts every second to immediately initiate the rescue operation in the event of a hazard. The test results of a confined environment (wastewater treatment unit) highlighted that concentrations of CH<sub>4</sub> and H<sub>2</sub>S were predominant (13 ppm). Compared to normal atmosphere, CH<sub>4</sub> concentration was 122- and 130-fold higher in the landfill and digestion tanks, respectively, while H<sub>2</sub>S was 36- and 19-fold higher in the primary and secondary clarifiers, respectively. The oxygen content (18.2%) and humidity (33%) were below the minimum required limits. This study will benefit future research to target appropriate toxic gas monitoring and alert workers by studying the existing issues and associated factors in confined places. |
| first_indexed | 2024-03-11T09:25:19Z |
| format | Article |
| id | doaj.art-77d5de9f288e4df6828a0943319a2dba |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T09:25:19Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-77d5de9f288e4df6828a0943319a2dba2023-11-16T18:03:17ZengMDPI AGSensors1424-82202023-02-01233159010.3390/s23031590Helmet-Mounted Real-Time Toxic Gas Monitoring and Prevention System for Workers in Confined PlacesJanani Priyanka Perumpally Rajakumar0Jae-ho Choi1ICT Integrated Safety Ocean Smart Cities Engineering Department, Dong-A University, S12-401, 550 Bungil 37, Nakdong-Daero, Saha-Gu, Busan 49315, Republic of KoreaICT Integrated Safety Ocean Smart Cities Engineering Department, Dong-A University, S12-401, 550 Bungil 37, Nakdong-Daero, Saha-Gu, Busan 49315, Republic of KoreaOccupational health and safety hazards associated with confined places are mainly caused by exposure to toxic gases and oxygen deficiency. Lack of awareness, inappropriate monitoring, and improper evacuation methods can lead to worker fatalities. Although previous studies have attempted to develop systems to solve this issue, limited research is available on their application in confined places. In this study, a real-time helmet-mounted system was developed to monitor major toxic gases (methane (CH<sub>4</sub>), hydrogen sulfide (H<sub>2</sub>S), ammonia (NH<sub>3</sub>), and carbon monoxide (CO)), oxygen, temperature, and humidity. Workers outside and inside confined spaces receive alerts every second to immediately initiate the rescue operation in the event of a hazard. The test results of a confined environment (wastewater treatment unit) highlighted that concentrations of CH<sub>4</sub> and H<sub>2</sub>S were predominant (13 ppm). Compared to normal atmosphere, CH<sub>4</sub> concentration was 122- and 130-fold higher in the landfill and digestion tanks, respectively, while H<sub>2</sub>S was 36- and 19-fold higher in the primary and secondary clarifiers, respectively. The oxygen content (18.2%) and humidity (33%) were below the minimum required limits. This study will benefit future research to target appropriate toxic gas monitoring and alert workers by studying the existing issues and associated factors in confined places.https://www.mdpi.com/1424-8220/23/3/1590toxic gas detectionreal-time gas monitoringconfined placesAlphasense gas sensorsalert system |
| spellingShingle | Janani Priyanka Perumpally Rajakumar Jae-ho Choi Helmet-Mounted Real-Time Toxic Gas Monitoring and Prevention System for Workers in Confined Places Sensors toxic gas detection real-time gas monitoring confined places Alphasense gas sensors alert system |
| title | Helmet-Mounted Real-Time Toxic Gas Monitoring and Prevention System for Workers in Confined Places |
| title_full | Helmet-Mounted Real-Time Toxic Gas Monitoring and Prevention System for Workers in Confined Places |
| title_fullStr | Helmet-Mounted Real-Time Toxic Gas Monitoring and Prevention System for Workers in Confined Places |
| title_full_unstemmed | Helmet-Mounted Real-Time Toxic Gas Monitoring and Prevention System for Workers in Confined Places |
| title_short | Helmet-Mounted Real-Time Toxic Gas Monitoring and Prevention System for Workers in Confined Places |
| title_sort | helmet mounted real time toxic gas monitoring and prevention system for workers in confined places |
| topic | toxic gas detection real-time gas monitoring confined places Alphasense gas sensors alert system |
| url | https://www.mdpi.com/1424-8220/23/3/1590 |
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