Heat Stress Monitoring

The OSHA Technical Manual, Chapter 4 (2017) provides comprehensive methodologies for the evaluation of thermal stress in occupational environments. It prescribes standardized procedures for monitoring key environmental parameters, including dry-bulb temperature, wet bulb globe temperature (WBGT), relative humidity, air velocity, and radiant heat load. These guidelines form the basis for effective heat-stress management programs, ensuring worker safety, regulatory compliance, and the implementation of evidence-based control measures. Our heat-stress assessments involve precise measurement of all critical thermal comfort and thermal-stress variables, including:

• Dry Bulb Temperature (DBT) – ambient air temperature
• Wet Bulb Temperature (WBT) – humidity-influenced cooling effect
• Globe Temperature – radiant heat load
• Relative Humidity (RH)
• Airflow / Air Velocity
• Heat Index – combined effect of temperature and humidity
• WBGT Index (Indoor & Outdoor Calculations) – industry-standard metric for heat-stress risk evaluation

These parameters are measured using calibrated instrumentation in accordance with OSHA, ISO, ACGIH, and established thermal-stress evaluation protocols.