Radiation effective for PPE, but not masks, says IAEA
https://world-nuclear-news.org/Articles/Radiation-effective-for-PPE-but-not-masks-says-IAE
I believe it, but maybe after a series of irradiations. UV likes to break things down (like curtains or my roof.) In my extremely recent experience in the past month, masks are made to break after a half-dozen uses, so who cares.