Looking through the books I haven't found anything regarding radiation protection other than the two types of HAZMAT suit (military in CMOM and professional in BBW); it wouldn't appear that the compression suits or EVA suits provide any protection against radiation, only vacuum and pressure protection. Based on this NASA paper I found (
https://ntrs.nasa.gov/api/citations/200 ... 046504.pdf), which I admit I only somewhat understood, contemporary space suits provide some slight radiation protection in their designs but mostly in the sense that one is better off wearing one during a radiation event than nothing at all - but then if you were in space wearing no PPE then you'd have much bigger problems to worry about than radiation exposure. More thorough protection against ionizing radiation (especially higher-energy stuff like X and gamma rays) is already sacrificed in order to provide comfort, maneuverability, and just getting into orbit at all - I'd imagine in the crapsack future of
Alien even these limited protections go by the wayside in favor of cutting costs and maximizing profits.
My take would be that HAZMAT goes on under the compression/EVA suit, otherwise there is no radiation protection conferred.