Work Activities and Settings Covered by the Standard
The standard applies to both indoor and outdoor work environments where heat exposure may pose a risk. Any work environment where the heat index reaches or exceeds the initial heat trigger of 80°F poses a risk.
Exemptions and Exceptions
Certain work activities and settings are exempt from the standard, including:
- Work environments with no reasonable expectation of heat exposure above the initial heat trigger: These are areas where temperatures are not expected to reach a heat index of 80°F/Wet Bulb Globe Temperature (WBGT) of 70. To find your local WBGT forecast please visit the National Weather Service Forecast Map and select the option for the "Wet Bulb Globe" forecast.
- Firefighting, emergency response activities, and technical search and rescue operations: These activities are governed by other specific safety regulations.
- Indoor areas consistently maintained below 80°F by air conditioning: Environments where air conditioning keeps temperatures consistently below the initial heat trigger.
- Telework and sedentary indoor work involving minimal physical exertion: This includes office work or tasks that do not require significant physical activity.
Employers whose employees exclusively perform these exempted activities are not required to comply with the standard.
By understanding and following the standard, supervisors and managers can help protect workers from the dangers of heat exposure and ensure compliance with OSHA regulations.
Knowledge Check Choose the best answer for the question.
1-3. What common factor makes a work environment subject to ANSI standard A10.50-2024?
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