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Related Experiment Videos

Target levels--tools for prevention

R I Niemelä1, J Rantanen, M K Kiilunen

  • 1Department of Physics, Finnish Institute of Occupational Health, Vantaa.

Risk Analysis : an Official Publication of the Society for Risk Analysis
|February 11, 1999
PubMed
Summary

Defining target air quality levels in industrial settings requires more than health limits. A technology-based approach, using best available technology benchmarks, is more feasible for planning comfortable indoor environments.

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Area of Science:

  • Industrial Hygiene and Occupational Health
  • Environmental Science and Engineering
  • Risk Assessment and Management

Background:

  • Current occupational exposure limits (OELs) focus on health standards but may not ensure optimal indoor air quality or occupant comfort in industrial settings.
  • Existing OELs can be insufficient for proactive planning of industrial workroom air environments.
  • There is a need for methodologies to define target air quality levels that consider both health and feasibility.

Purpose of the Study:

  • To explore methodologies for defining target air quality levels in industrial environments, incorporating feasibility considerations.
  • To compare health-based risk assessment with risk assessment based on Best Available Technology (BAT).
  • To emphasize a technology-based approach due to inaccuracies in health-based risk estimates at low concentrations.

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Main Methods:

  • Comparison of health criteria-based risk assessment with Best Available Technology (BAT) based risk assessment.
  • Utilizing a contaminant exposure databank to determine prevailing concentrations in industrial work environments.
  • Conducting field measurements in industrial workrooms with advanced ventilation and production technology to establish benchmark air quality.

Main Results:

  • Health-based risk estimates are noted to be inaccurate in low concentration regions.
  • A technology-based approach, leveraging prevailing concentrations and BAT benchmarks, is emphasized as a more reliable method.
  • The target level assessment methodology was successfully applied to common industrial contaminants: formaldehyde, total inorganic dust, and hexavalent chromium.

Conclusions:

  • A technology-based approach, informed by prevailing contaminant levels and BAT, provides a more practical basis for setting industrial indoor air quality targets.
  • This approach supports the planning of indoor air environments that are both healthy and comfortable for workers.
  • The study demonstrates the applicability of the target level assessment to key industrial air pollutants.