So Jetpacks can be added to armor. Why not Batpacks (and Adv Batpacks, and I suppose EnergyPacks and LapPacks)? This would especially be useful if you forget to take off your hazmat suit, or vice versa forget to take off your batpack before handling uranium
CF Sprayer packs could also be an add to Hazmat... but I would die less if Batpacks worked, so that's more important!