When should the mask be refitted?

The appropriate time to refit a mask is typically based on the specific guidance and protocols established by the relevant safety authorities and manufacturers, as well as the operational needs of the organization. Option B suggests refitting the mask every fiscal year, which aligns with the idea that regular checks and maintenance are essential for ensuring safety.

In many scenarios, refitting may be required annually to take into account any changes in the user's physical condition, such as fluctuations in weight or facial structure that could impact the fit and seal of the mask. Additionally, annual checks allow for the evaluation of mask integrity, replacing any parts that might have degraded over time, and ensuring compliance with safety standards.

Refitting every year ensures that the equipment remains effective in providing the necessary respiratory protection in hazardous environments, minimizing the risk of exposure to harmful substances.