Originally Posted by
GuardPolice
Better tell certain O2 mask manufacturers. I’ve seen some 121 approved masks that have a warning to the effect of “facial hair will not allow a good seal.”
No facial hair is a standard requirement for anyone working in a chemical plant, oil refinery, etc. An O2 mask fit test and training for a SCOTT air pack (like Fire Fighters wear) is mandatory once a year. Even a contract construction or maintenance worker entering an operating plant is required to shave or is forbidden from entering.