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All of us are watching what's happening in Japan with wide-eyed horror. A country hit with a 9.0 earthquake followed by a 30-foot tsunami followed by possible partial meltdowns in more than one reactor is more disaster than any single country deserves. But while the first two are acts of nature, the third is man's own doing and no one else's. As a Californian, seeing this disaster unfold in real time has been almost too much to bear, especially knowing there's a nuclear power plant about 100 miles or so down the coast in an earthquake-prone state. San Onofre nuclear generating station's operating reactors were built in 1982 and 1983 and took into account the earthquake technology available at the time. Since Japan's disaster, many Californians are questioning the wisdom and safety of a nuclear reactor on the California coast. Well, let's leave it to Bill Hemmer to reassure us all that it's just perfectly fine because it has a 25-foot seawall and is certified for a 7.0 earthquake. Again, to review Japan's current predicament: 9.0 earthquake 30-foot tsunami
All of us are watching what's happening in Japan with wide-eyed horror. A country hit with a 9.0 earthquake followed by a 30-foot tsunami followed by possible partial meltdowns in more than one reactor is more disaster than any single country deserves.
But while the first two are acts of nature, the third is man's own doing and no one else's. As a Californian, seeing this disaster unfold in real time has been almost too much to bear, especially knowing there's a nuclear power plant about 100 miles or so down the coast in an earthquake-prone state. San Onofre nuclear generating station's operating reactors were built in 1982 and 1983 and took into account the earthquake technology available at the time.
Since Japan's disaster, many Californians are questioning the wisdom and safety of a nuclear reactor on the California coast. Well, let's leave it to Bill Hemmer to reassure us all that it's just perfectly fine because it has a 25-foot seawall and is certified for a 7.0 earthquake. Again, to review Japan's current predicament:
you knew that... 'The history of public debt is full of irony. It rarely follows our ideas of order and justice.' Thomas Piketty
Think of the panic that the headline "Radiation levels increase by 100 percent" could induce. But in reality, such radiation would be medically beneficial; it would promote "radiation hormesis" -- the exercise of the immune system. "We get one unit of radiation per day. When we double that -- they've done tests with animals -- they show better health. It's like doing pushups," says Gilbert Brown, a professor of nuclear engineering at the University of Massachusetts-Lowell. That doesn't prove we shouldn't worry about much higher levels of radiation -- but it indicates how our emotional response does not correspond to reality.
Linear no-threshold model - Wikipedia, the free encyclopedia
The linear no-threshold model (LNT) is a method for predicting the long term, biological damage caused by ionizing radiation and is based on the assumption that the risk is directly proportional to the dose at all dose levels. In other words, the sum of several very small exposures have the same effect as one larger exposure. The LNT model therefore predicts higher risks than the threshold model, which assumes that very small exposures are negligible. The radiation hormesis model predicts the least risk by assuming that radiation is beneficial in very low doses, while still recognizing that it is harmful in large doses. Because the current data is inconclusive, scientists disagree on which method should be used.[1]
And yes, the data on low level exposure is inconclusive as far as I understand. Mostly because of the lack of good data. If I remember correctly, the good data on large exposure came from Hiroshima and Nagasaki. Sweden's finest (and perhaps only) collaborative, leftist e-newspaper Synapze.se
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