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KMID : 1156220190450060569
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Journal of Environmental Health Sciences
2019 Volume.45 No. 6 p.569 ~ p.576
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Task-specific Noise Exposure Assessment of Firefighters
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Kang Tae-Sun
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Abstract
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Objectives: The main purpose of this study was to assess firefighters’ daily personal noise exposure and explore noise levels related to specific tasks and their contributions to total noise exposure using 24-hour full-shift noise exposure measurements with task-based data.
Methods: Noise exposure was assessed for eight firefighters (two rescuers, two drivers, and four suppressors) using time-activity diaries. We collected a total of 24 full-shift personal noise sample sets (three samples per a firefighter). The 24-hour shift-adjusted daily personal noise exposure level (Lep,d), eight weekly personal noise exposures (Leq,w), and 40 task-specific Leq values (Leq activity) were calculated via the ISO/NIOSH method.
Results: The firefighter noise-sample datasets showed that most firefighters are exposed to noise levels above EU recommended levels at a low-action value. The highest noise exposure was for rescuers, followed by drivers and suppressors. Noise measurements with time-at-task information revealed that 82.3% of noise exposure occurred when checking equipment and responding to fire or emergency calls.
Conclusions: The results indicate that firefighters are at risk of noise-induced hearing loss. Therefore, efforts at noise-control are necessary for their protection. This task-specific noise exposure assessment also shows that protective measures should be focused on certain tasks, such as checking and testing equipment.
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KEYWORD
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Firefighter, noise exposure, task-specific
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