I stopped reading after this line:
Some greens have wildly exaggerated the dangers of radioactive pollution.
Firstly, "some greens"? A surprisingly snide remark from someone who only just become pro-nuclear.Secondly, that's not even the point he then goes on to make? His argument is that what happened in Japan is below the safety guidelines. The worry of people who are anti-nuclear is that there is a possibility that something could happen to put the radiation levels above what is safe.
I'm not anti-nuclear personally, but the worry I have isn't that, if a small amount of radiation leaks for some reason that it will have worse effects than believed by scientists. My worry is that the accident/whatever could cause the leaks to be far higher, if that happens it will be a very real problem.