When should a worker remove their respirator after being in a contaminated area?

The correct answer emphasizes the importance of maintaining safety and avoiding exposure to airborne contaminants after leaving an area where asbestos or other hazardous materials may have been present. Removing the respirator only after entering a shower ensures that the worker remains protected until they are in an environment that is free from contamination. This practice is crucial because asbestos fibers can remain on clothing and skin, and any disturbance can release them back into the air, posing health risks.

Maintaining the respirator until in the shower is part of a comprehensive safety protocol that seeks to minimize exposure to hazardous materials. It recognizes that contamination can occur even after exiting the immediate work area, and diligent practices such as this help prevent further inhalation of harmful substances.

The other options suggest that the respirator can be removed earlier, which would increase the risk of exposure to hazardous materials lingering on clothing or in the air. It is essential for workers to adhere strictly to safety guidelines to protect themselves from the long-term health effects associated with asbestos and other toxins.