Sunday, June 09, 2013

The Fukushima Nuclear Disaster's Toll: How About Zero?
...In February, the World Health Organisation reported there would be no noticeable increases in cancer rates for the overall population. A third of emergency workers were at some increased risk.

While infants in two localised hot spots were likely to have a 6 per cent relative increase in female breast cancer and 7 per cent relative increase in male leukaemia, WHO cautioned this was a small change. The lifetime risk of thyroid cancer, which is treatable, is only 0.75 per cent, so even in the worst-affected location it rose to only 1.25 per cent.

Now the United Nations Scientific Committee on the Effects of Atomic Radiation has drawn on 80 scientists from 18 countries to produce a draft report that concludes: "Radiation exposure following the nuclear accident at Fukushima-Daiichi did not cause any immediate health effects. It is unlikely to be able to attribute any health effects in the future among the general public and the vast majority of workers." ...

Nor has the environment been devastated. The report says: "The exposures on both marine and terrestrial non-human biota were too low for observable acute effects."...

...Let's be clear, Fukushima was hit by a worst-case scenario: the world's fifth-most-powerful earthquake since 1900, a tsunami twice as high as the plant was built to withstand, and follow-up quakes of magnitudes 7.1 and 6.3. A Japanese commission of inquiry described it as a "man-made disaster" because of regulatory failure and lack of a safety culture.

This "perfect storm" hit a nuclear plant built to a 50-year-old design and no one died. Japan moved a few metres east during a three-minute quake and the local coastline subsided half a metre, but the 11 reactors operating in four nuclear power plants in the region all shut down automatically. None suffered significant damage. (The tsunami disabled Fukushima's cooling system.)

Yet such is the imbalance of dread to risk on matters nuclear that this accident was enough to turn public opinion and governments against nuclear power. Never mind that coal mining kills almost 6000 people a year, or that populations of coal-mining areas have death rates about 10 per cent higher than non-mining areas, or that coal emissions drive global warming....