Which of the following is NOT a type of FOD Barrier?

Safety goggles are not considered a type of Foreign Object Debris (FOD) barrier because they serve a different purpose entirely. Goggles are designed to protect the eyes from flying debris, contaminants, and other environmental hazards typically encountered in various work or operational settings. They are essential for personal safety but do not directly prevent FOD from contaminating aircraft or equipment.

In contrast, caps, plugs, and protective covers are specifically designed as barriers to prevent foreign objects from entering sensitive areas of machinery or systems, thereby directly contributing to FOD prevention. Caps and plugs can seal openings where debris might enter, while protective covers shield components from environmental contaminants when not in use.