Mkil, you know I love you, but could you please do like, at least one minute of research before posting something that appears as absurd as that map does as first glance.
A) It doesn't give us any indication of how likely a nuclear meltdown is.
B) It's claiming that, in the case of a meltdown, the west coast of the U.S. is going to be exposed to more than 150% of the lethal dose of radiation. This is preposterously high.
C) Australian Radiation Services? This isn't even a government agency. They're a very small firm who attempt to help other companies meet radiation legal guidelines. They are in no position to make such a map.