have raised one question in particular about the exhibition: how safe is the art work from contamination by radioactivity?
It's the same question which experts have a somewhat hard time answering clearly, although usually coming up with "safe" but being unclear exactly what "contamination" – or "decontamination" – finally means or involves. Although, as often as not, it's a question for people, here it applies to artworks. What, if anything, would happen to an artwork which actually was contaminated, or whether a low level of contamination would not affect the piece but might mean it was risky to handle, is also unclear. I would fall on the side of little risk and would welcome the exhibition, but I'm not an "expert". (And would I, hand on heart, feel the same if the Mona Lisa was coming?)