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Here'pdfs\s a .pdf presentation of a Boiling Water Reactor...26 pages and good info www.ucsusa.org

@Matsuoko In the old Soviet Union the TEPCO Chief would simply disappear and all references to his ever being alive would be erased. "Ill from exhaustion"...I guess that beats the heck out of the radiation poisoning his workers and engineers are having to endure.

I think they are just running around like hens with their heads choppd off. The whole "extreme high radiation in water puddles" problem just shows that they have no chance to repair the inner workings of the reactors. If anything in there is destroyed, they can't do a thing.

@James. There is an existing network of radiation detectors in the US. They didn't set them up special for this.

RE: TEPCO denying the high measurement figures : “The number is not credible,” said Tokyo Electric Power Co (TEPCO) spokesman Takashi Kurita. “We are very sorry.” What could this mean in practice (assuming they are right)? Broken meters? Is it easy to foul up the measurement of water sample radiation measurement? It's sad they didn't explain how the measurements were "not credible". To me, after each passing day, Tepco is more and more "note credible" themselves.

@Nancy Yes, I understand exactly why the radiation detector network was set up. My question still stands: Why set up a network with alarms that trigger when elevated levels of radiation are detected if there's nothing to be concerned about?

Wikipedia Tokyo Electric Power Company - Scandal "On August 29, 2002, the government of Japan revealed that TEPCO was guilty of false reporting in routine governmental inspection of its nuclear plants and systematic concealment of plant safety incidents. All seventeen of its boiling-water reactors were shut down for inspection as a result. TEPCO's chairman Hiroshi Araki, President Nobuya Minami, Vice-President Toshiaki Enomoto, as well as the advisers Shō Nasu and Gaishi Hiraiwa stepped-down by September 30, 2002.[13] The utility "eventually admitted to two hundred occasions over more than two decades between 1977 and 2002, involving the submission of false technical data to authorities".[14] Upon taking over leadership responsibilities, TEPCO's new president issued a public commitment that the company would take all the countermeasures necessary to prevent fraud and restore the nation's confidence. By the end of 2005, generation at suspended plants had been restarted, with government approval.
In 2007, however, the company announced to the public that an internal investigation had revealed a large number of unreported incidents. These included an unexpected unit criticality in 1978 and additional systematic false reporting, which had not been uncovered during the 2002 inquiry. Along with scandals at other Japanese electric companies, this failure to ensure corporate compliance resulted in strong public criticism of Japan's electric power industry and the nation's nuclear energy policy. Again, the company made no effort to identify those responsible." en.wikipedia.org

Taken from a guy's post at Ars Technica forums : "Watching TV here in Singapore, they had an interview with a greenpeace activist in Japan, he was 35 km from the plant, so outside the evacuation area. Not sure how objective greenpeace will be but they said they were measuring radiation at levels which would give someone their yearly maximum exposure in four days. What sort of numbers would that equate to? The guy said this is completely unnacceptable and people should be evacuated." Asahi reported yesterday of hot spots measurements in the soil 40km from Fukushima reading 3.26 MBq/m2. That's 6 times as high as the forced evacuation limit in Chernobyl in 1986 (0.55MBq/m2). Not very promising, although these can be individual hot spot instances and not a measure of overall soil radiation.

@George Gibb That is a MAJOR ruling! Wow.

I'm no expert but measuring water levels isn't easy but depends on what you're testing for. They 'should' have equipment far superior to mine and not be making mistakes. I know that when mine picks up alpha. it has done well as alpha is difficult to pick up. I also know that I have probably missed some as my eqipment is not as sensitive as that used by the governments.

Nothing at www.nisa.meti.go.jp since 26-Mar. Strikes me as an odd time to take Sunday off...

Buy a geieger and test yourself. it's about the only way you'll know for sure.

Hi guys, anybody knows the esact INES for all the reactor? the estimated one on the JAIF it seems L3 for R1,R2,R4 and R3 not estimated, is this correct? thanks!

The cooling pool can go into meltdown.

@Bobby1 Why give a partial (biased?) bio on Joe Cirincione when you can read the whole thing? en.wikipedia.org

@Charlie Bingo on Reactor #4.

@James Ward No prob, I should have included link

@James Ward : there can only be 3 core meltdowns. 1 core is empty. so far the credibility of this guy !