Reactor water known as reactors LWR, etc. is the most consumed type of industrial reactor, nuclear energy in the world.

the reactor is ordinary water (water) cool. and due to the high-pressure steam water reactors LWR, usually at high pressures of work. And since the neutron thermal abundance by water absorption. this type of reactor is usually uranium fuel, refueling. but also should not be so rich.

two types of reactor LWR nowadays in the world is used:
1 - reactor, a blue compact
2 - reactor blue effervescent