The nuclear reactors are continuously monitored because when energy is released from an atom, deadly rays of radiation also come out. This radiation is very harmful when it enters the body.
This is because when too much radiation passes through living cells, it damages the cells or weakness the body’s defences against disease.
A typical nuclear power station produces a lot of waste each year, which is poured into steel tanks and then buried in concrete.
Below Nuclear Power info from Wikipedia (Read More):-
Nuclear power is any nuclear technology designed to extract usable energy from atomic nuclei via controlled nuclear reactions. The only method in use today produces power via nuclear fission, though other methods might one day include nuclear fusion and radioactive decay (see below). All utility-scale reactors[1] heat water to produce steam, which is then converted into mechanical work for the purpose of generating electricity or propulsion. In 2007, 14% of the world's electricity came from nuclear power. Also, more than 150 nuclear-powered naval vessels have been built, and a few radioisotope rockets have been produced.
http://en.wikipedia.org/wiki/Nuclear_power
