I remember the report on abnormalities near nuclear powerstations, but I also remeber a follow up report where they also tested possible new sites for a nuclear power stations. They could work this out because all nuclear power stations have similar requirements, ie, next to a large supply of water. They found the abnormalities were also present in sites for new powerstations, and came to the conclusion that the right conditions for a nuclear powerstation are also the conditions required for abnormalities.
From what I remember, an H atom has + charge, and an O atom has - - charge. the addition of an H atom only requires the addition of 1 electron to balance the charge, while adding an O atom would require removing 2 electrons to balance the charge. Chaos theory says nature will always take the simpler option, so I believe heavy water is H3O, not H2O2. This also ties up with the formulae I rember when I studied this years ago, but I'd have to check my notes to confirm.
I know how many things happen in the government installation I work in that the outside world doesn't find oput about, and I hear the nuclear instalations (Some government run) are the same. How many times do we come close to disaster without hearing about it?