What is considered an unacceptable method of protecting an employee from a radiant heat source?

Increasing ventilation is considered an unacceptable method for protecting an employee from a radiant heat source because it does not effectively mitigate the direct effects of radiant heat exposure. While good ventilation can help manage ambient temperature and improve overall air quality, it does not directly shield an employee from the thermal energy emitted by a radiant source.

In contrast, methods such as providing personal protective equipment, limiting exposure time, and using reflective barriers are all proactive approaches that directly address the risks associated with radiant heat. Personal protective equipment can include specialized clothing that reflects heat, thereby providing a barrier against the harmful effects. Limiting exposure time reduces the duration of heat exposure, which can help prevent heat-related illnesses. Finally, using reflective barriers can effectively redirect radiant heat away from workers, minimizing their exposure to hazardous temperatures. These methods are more effective for ensuring the safety and well-being of employees working in environments with significant radiant heat sources.