What should a worker do before using a respirator?

Before using a respirator, it is essential for a worker to ensure a proper fit. A well-fitted respirator creates a tight seal around the face, which is critical for effective protection against airborne contaminants, including asbestos fibers. If a respirator does not fit correctly, it may allow unfiltered air to leak in, compromising the user's safety and health.

Ensuring a proper fit typically involves conducting a fit test to determine if the respirator adequately fits the individual’s face shape and size. This step is vital for the respirator to function as intended, especially in high-risk environments where exposure to hazardous materials is present.

While it's beneficial to read the safety manual and know about general health recommendations, such as eating before work, these actions do not directly impact the effectiveness of the respirator. Checking the weather may be relevant for other work conditions but is not applicable to the immediate use and effectiveness of a respirator.