Hello,
I was researching ways to minimize background Gamma radiation exposure to frozen film stock, when I came across a diagram on this page http://www.reviss.com/resource/index.asp?lvl2_id=10 suggesting that UV-C radiation overlaps Gamma and X Ray radiation in wavelength.

I actually run an enclosed type UV C germicidal lamp in the storage area of my lenses (to help minimize chance for lens glass fungus) and which is near a large freezer that I keep frozen film.

I know it sounds far fetched that radiation from a germicidal UV C lamp in an enclosed plastic case could not only penetrate said case, but the radiation from the UV C could also penetrate the walls of freezer and fog film. But I have to ask to be sure.

informed responses appreciated. Thanks in advance.