And, even if Juragua were never finished, Florida has several potential radiationsources of its own not just the state's own (safer) nuclear plant, but also its active phosphate industry.
Except for the small, highly contaminated areas adjacent to the reactors which should stay off-limits until remediated, the risk of cancer and death from the increased use of coal and gas since the disaster has provided much more risk to the population of the Japan region than any radiation effects from Fukushima ( Killer Energy Sources).
Most diffuse X-ray sources in the Universe have a characteristic temperature because they represent the residual radiation from an event, such as a supernova.
The Scottish government asked radiation scientists at the HPA late last year to assess the risks to public health from radioactive sources discovered at the beach.