Dr.Fessel
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Another good earthquake site. http://www.emsc-csem.org/Earthquake/
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A large earthquake followed by a tsunami is certainly a possibility. The death toll could be high if the quake was near a low lying area with a large population.
Our nuclear plants seem to have better emergency plans than the ones that failed in Japan. For example, the plants on the California coast have standby generators kept inland on trucks that can replace a failed generator long before battery power expires. The Japanese plants had no plans for handling a generator failure.
That truck thing is nice and all, but last year there was a little piece on the news about how the san onofre plant was built to withstand a 7.0. The devastating quake in Japan was a 9.0. The san onofre plant is right on the beach. There is no wall to block a wave from a tsunami, and in Japan the waves were 30+ meters high, and washed inland for miles.
The generators aren't the only thing to worry about. The quake in Japan damaged the buildings as well. The vessels that holds the reactor cores were cracked which having a generator wouldn't have helped at all.
However, I did read somewhere that a really big quake is unlikely to hit the southern coast of the USA for one reason or another. The more likely place for a really big one is norcal up to the BC coast.
I just google image searched and the other plant in CA looks like there's a cliff in front, so there's a little protection there.
A large earthquake followed by a tsunami is certainly a possibility. The death toll could be high if the quake was near a low lying area with a large population.
Our nuclear plants seem to have better emergency plans than the ones that failed in Japan. For example, the plants on the California coast have standby generators kept inland on trucks that can replace a failed generator long before battery power expires. The Japanese plants had no plans for handling a generator failure.
A 66-foot-long, 7-foot high concrete and steel floating dock made landfall on Agate beach just outside Newport, Oregon.
Scientists at Oregon State University's Hatfield Marine Science Center said the cement float contains about 13 pounds of organisms per square foot, and an estimated 100 tons overall. Already they have gathered samples of 4-6 species of barnacles, starfish, urchins, anemones, amphipods, worms, mussels, limpets, snails, solitary tunicates and algae and there are dozens of species overall.
More than a year after a devastating earthquake and tsunami triggered a massive nuclear disaster, experts are warning that Japan isn't out of the woods yet and the worst nuclear storm the world has ever seen could be just one earthquake away from reality.
The troubled Reactor 4 at the Fukushima Daiichi nuclear plant is at the centre of this potential catastrophe.
Reactor 4 -- and to a lesser extent Reactor 3 -- still hold large quantities of cooling waters surrounding spent nuclear fuel, all bound by a fragile concrete pool located 30 metres above the ground, and exposed to the elements.
A magnitude 7 or 7.5 earthquake would likely fracture that pool, and disaster would ensue, says Arnie Gundersen, a nuclear engineer with Fairewinds Energy Education who has visited the site.
The 1,535 spent fuel rods would become exposed to the air and would likely catch fire, with the most-recently added fuel rods igniting first.
The incredible heat generated from that blaze, Gundersen said, could then ignite the older fuel in the cooling pool, causing a massive oxygen-eating radiological fire that could not be extinguished with water.
"So the fear is the newest fuel could begin to burn and then we'd have a conflagration of the whole pool because it would become hotter and hotter. The health consequences of that are beyond where science has ever gone before," Gundersen told CTVNews.ca in an interview from his home in Vermont.
http://www.reuters.com/article/2012/06/16/us-japan-nuclear-idUSBRE85F02720120616
"Japan approves 2 reactor restarts, more seen ahead"
"(Reuters) - Japan on Saturday approved the resumption of nuclear power operations at two reactors, the first to come back on line after they were all shut down following the Fukushima crisis.
The government's decision to restart two reactors operated by Kansai Electric Power Co at Ohi in western Japan was announced by Prime Minister Yoshihiko Noda at a meeting with key ministers.
Despite protests against the move and public safety concerns, the decision could open the door to more restarts among Japan's 50 nuclear power reactors."
(More at link)
Nuclear power supplied almost 30 percent of electricity needs before the March 2011 disaster, which triggered meltdowns at Fukushima, spewing radiation and forcing mass evacuations.
The accident destroyed public belief in the "safety myth" promoted by Japanese nuclear power advocates for decades.
Activists have collected more than 7.5 million signatures on a petition urging an end to atomic power. Protesters have poured into the street almost daily over the past week.
All 50 reactors were shut down for maintenance or safety checks in the months since the accident. The government had placed a priority on gaining the approval of local communities for the Ohi restarts to avert July-August power shortages.
Critics say the government was too hasty in signing off on the restarts, especially given delays in setting up a new, more independent nuclear regulatory agency.
If the temperature of spent nuclear fuel is allowed to increase unchecked it can potentially reach the point where a nuclear reaction begins, leading to a meltdown.
Two weeks ago a massive power outage at the facility caused cooling systems to go offline. The origin of the power cut was identified as a 25cm-long “rat-like animal” that was found dead on the switchboard, a TEPCO official told Kyodo news