I don't see any nuclear exposure to PUW. It's mostly into Natural Gas and Electric Power, which I truely believe in for the future. It's getting very attractive here. In fact, I almost started buying some last Friday.
For nuclear exposure, I would look at EXC, D, ETR, SO, CEG, FPL. All of them have good dividends or you can try just an ETF called NLR, which is in Nuclear Energy. This is good for someone in the later years of life for income.