Task-Specific Noise Exposure Assessment in Korean Firefighters

Ernest N. Morial New Orleans Convention Center 

Firefighters face unpredictable, high-intensity noise from sirens, horns, rescue tools, and emergency vehicles. Unlike industrial workers exposed to steady noise, they experience sudden bursts that increase the risk of noise-induced hearing loss (NIHL). While NIHL among firefighters has been reported internationally, only limited cases have been documented in Korea, and scientific data remain limited. This study assessed noise exposure in 115 Korean firefighters across fire suppression, rescue, and emergency medical service (EMS) roles. Personal dosimeters were set to Korean MOEL and ISO standards, and fire station records were used to classify tasks. Time-weighted average (TWA) and peak exposures were analyzed by role and activity. Although average TWAs did not exceed regulatory limits, some tasks-such as equipment checks, training, and rescue operations-exceeded 100 dBA. Rescue personnel had the highest exposures, while EMS onboard staff faced greater noise than drivers. Elevated levels were also observed during in-station training activities. Currently, Korean firefighters are not required to undergo noise exposure assessments, and most stations lack structured hearing conservation programs. Hearing tests are limited to general medical exams, making occupational NIHL difficult to establish. These findings highlight the need for firefighter-specific hearing conservation programs and preventive strategies, including communication-friendly hearing protection.

D. Kim, Occupational Safety and Health Research Institute (OSHRI), Ulsan, Ulsan Metropolitan City, Republic of Korea 

G. Jung, School of Industrial Engineering, University of Ulsan, Ulsan, Ulsan Metropolitan City, Republic of Korea 

Consulting

Exposure Assessment

Hearing conservation and noise reduction

Legal and expert witness

Personal protective equipment