What is the maintenance schedule for AFFF and FFFP fire extinguishers?

The correct maintenance schedule for Aqueous Film Forming Foam (AFFF) and Film Forming Fluoroprotein (FFFP) fire extinguishers includes annual external examination and a more comprehensive service every three years. This involves breaking down the extinguisher and replacing the agent.

This thorough inspection cycle is vital because it ensures that both the mechanical components and the fire suppression agent are functional and effective. Over time, the foam agents can deteriorate, and any internal components may suffer wear, which may compromise the extinguisher's performance during an emergency. An annual external check helps identify any visible issues such as corrosion, physical damage, or pressure problems.

In contrast, having only a ten-year inspection period, as suggested by one of the other choices, is not sufficient for the safety and reliability of these extinguishers given the critical role they play in fire suppression. Regular checks after each use are necessary for all fire extinguishers, but they do not replace the need for regular maintenance scheduling as outlined.