What must be done to a tight-fitting respirator to ensure proper safety?

A tight-fitting respirator must be fit-tested to the individual user to ensure proper safety. This is crucial because respirators are designed to create a seal around the face, and an improper fit can allow harmful airborne contaminants to enter the breathing zone, defeating the purpose of the respirator. The fit-testing process measures how well the respirator conforms to the specific contours of the user’s face, helping to identify any gaps or leaks.

While other options like regular cleaning and leak testing contribute to the overall maintenance and effectiveness of a respirator, they do not ensure that the respirator will function properly for an individual user. Regular cleaning is important for hygiene and clear visibility, and conducting leak tests can help verify the integrity of the respirator, but these measures do not account for the unique fit requirements that vary from one person to another. Replacing a respirator on a monthly basis is not a standard requirement and can lead to unnecessary costs if the respirator is still in good condition. Thus, fit-testing remains the key element for safety in the use of tight-fitting respirators.