I got goose bumps:I think they are focusing on reactor 3 because:
In November 1992, a fuel rod was broken through a handling error, and MOX dust was released during the mounting of MOX fuel rods to fuel assemblies in the fuel fabrication facility adjoining the MOX facility in Dassel, Belgium. In the event of such accidents, if the ICRP recommendations for general public exposure were adhered to, only about one mg of plutonium may be released from a MOX facility to the environment. As a comparison, in uranium fabrication facility, 2kg (2,000,000mg) of uranium could be released in the same radiation exposure. A one mg release of plutonium can easily happen during various smaller incidents..