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Firefighters' multiple exposure assessments in practice.

Juha Laitinen1, Mauri Mäkelä, Jouni Mikkola

  • 1Finnish Institute of Occupational Health, PO Box 310, FI-70101 Kuopio, Finland. Juha.Laitinen@ttl.fi

Toxicology Letters
|June 20, 2012
PubMed
Summary

Firefighter simulator training exposes trainers to harmful chemicals. Modern simulators significantly reduce exposure risks and health effects compared to older models, highlighting the need for updated safety protocols.

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Environmental toxicology and pharmacology·2011

Area of Science:

  • Occupational Health
  • Environmental Science
  • Toxicology

Background:

  • Firefighter training involves exposure to complex chemical mixtures from smoke.
  • Multi-route exposure and potential synergistic effects of smoke chemicals require updated biomonitoring guidelines.
  • Previous assessments have not fully accounted for additive and synergistic chemical impacts in simulators.

Purpose of the Study:

  • To assess smoke exposure levels in conventional and modern firefighter simulators using biomonitoring and occupational hygiene methods.
  • To establish biological action limit values (BALs) for 1-hydroxypyrene in different simulator types.
  • To evaluate the additive and synergistic health effects of key airborne compounds during fire suppression simulations.

Main Methods:

  • Utilized biomonitoring of 1-hydroxypyrene and occupational hygienic measurements.

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  • Determined exposure levels in conventional and modern smoke simulators.
  • Calculated BALs for 1-hydroxypyrene and assessed additive/synergistic effects of volatile organic compounds (VOCs).

    • Main Results:

    • Dermal exposure to polycyclic aromatic hydrocarbons (PAHs) was significant, potentially delaying the excretion of 1-hydroxypyrene and 1-naphthol.
    • Established BALs for 1-hydroxypyrene were 6 nmol/L for conventional simulators and 53 nmol/L for modern simulators.
    • Conventional simulators exhibited 6.5 to 7.0-fold higher combined health risks (cancer, eye, respiratory irritation) from VOCs compared to modern simulators.

    Conclusions:

    • Modern firefighter simulators offer a significantly safer training environment with reduced chemical exposure and health risks.
    • Biomonitoring data indicates dermal absorption plays a role in PAH exposure and affects excretion kinetics.
    • Updated safety standards and biomonitoring recommendations are crucial for protecting firefighters from simulator-induced exposures.