Crews worked round the clock for two weeks, purifying graphite and uranium, arranging the blocks in 57 layers of precise positions, and fitting holes for cadmium control rods. They finished on the ...

BEIJING--A Chinese nuclear power plant near Hong Kong had five broken fuel rods in a reactor ... would oversee measures to control radiation levels within the reactor but gave no details.

China General Nuclear Power Group (CGN) said in a statement on Friday that the reactor was "completely under control". Engineers would find the cause of the damage and replace the fuel rods ...

These delayed neutrons allow enough time for human operators and computers to control the overall speed of the nuclear chain reaction called driving the reactor. The core of a reactor contains uranium ...