Overview

Wet Bulb Globe Temperature (WBGT) monitoring to assess thermal stress exposure in hot working environments such as foundries, kitchens, boiler rooms, outdoor construction, and manufacturing facilities. The assessment determines whether workers are at risk of heat-related illness and recommends appropriate work-rest cycles.

Methodology

  • Deployment of WBGT heat stress monitor in identified hot work areas
  • Measurement of wet bulb, dry bulb, and globe temperatures
  • Calculation of WBGT index values
  • Comparison against action levels based on metabolic workload category

What You Receive

  • Heat stress assessment report with WBGT readings per area
  • Compliance status against SANS 7243 action levels
  • Work-rest cycle recommendations
  • Recommendations for engineering controls, hydration programmes, and acclimatisation
Applicable Legislation:
OHS Act 85 of 1993 Section 8; SANS 7243 / ISO 7243; Environmental Regulations for Workplaces.

Frequently Asked Questions

What is WBGT?
Wet Bulb Globe Temperature is a composite index that accounts for air temperature, humidity, wind speed, and radiant heat. It is the internationally accepted standard for assessing heat stress in the workplace.
When should heat stress assessments be done?
Assessments should be conducted during the hottest working conditions — typically summer months or during peak production when heat-generating processes are running.