How often should a respirator fit test be conducted?

Conducting a respirator fit test every time the respirator is used is essential because the effectiveness of a respirator hinges on its proper fit to the individual user's face. Variations in facial hair, weight, health status, and changes in the environment can all affect the fit of the respirator. A proper fit ensures that the respirator provides the intended level of protection against hazardous substances, such as asbestos.

Furthermore, the frequency of fit testing is aligned with best practices and regulatory requirements that prioritize worker safety, especially in environments where exposure to dangerous materials is a concern. Regular fit testing also reinforces the importance of ensuring that the correct type and size of respirator is being used, thus minimizing the risk of inhalation of harmful airborne particles.

While other options suggest a periodic approach to fit testing, they do not address the importance of immediate assessment of fit each time the respirator is donned, leaving potential gaps in respiratory protection for the worker.