Exposure to fire smoke in fire training structures: A prospective observational study.

Area of Science:

• Occupational Health
• Environmental Science
• Toxicology

Background:

• Firefighter instructors face potential exposure to combustion byproducts during training.
• Assessing exposure levels is crucial for understanding health risks and improving safety protocols.

Purpose of the Study:

• To evaluate smoke exposure and contamination levels in firefighter instructors.
• To analyze environmental samples and urinary biomarkers to quantify exposure.

Main Methods:

• Prospective observational study conducted over a 10-day period.
• Collection of environmental samples and analysis of urinary biomarkers.
• Comparison of results against occupational exposure limits (OELs) and biological reference values (BRVs).

Main Results:

• Occupational exposure limits (OELs) were exceeded for carbon monoxide and formaldehyde in specific training environments.
• Urinary biomarkers indicated accumulation of 1-hydroxypyrene (1OHP) and 1-naphthol.
• Acute exposure exceeding BRVs for benzene, 1-hydroxypyrene, and naphthol was observed, with 3-benzo[a]pyrene being undetectable in some cases.

Conclusions:

• Despite generally reassuring values, acute exposures to certain toxins were identified in firefighter instructors.
• Recommendations include enhancing respiratory protection and improving the quality of personal protective equipment (PPE).
• Further efforts are needed to minimize working conditions that lead to contamination.