Wednesday, June 8, 2011

("Now They Tell Us" Series) #Fukushima I Nuke Accident: 1 Ton of Hydrogen In Few Hours After Fuel Rods Got Exposed

NISA couldn't stop physics from working its way at Fukushima I Nuke Plant, so they did their best to hide it. And the reporters, usually not very much trained in physics not to mention any science at all, didn't know what to ask at the press conferences in the early days of the accidents and/or didn't understand the answer given by TEPCO or NISA.

Those few who did ask and did understand, and wrote about their speculation about the condition of the plant were branded as "fear-mongering liars" both by the government, the MSM who received tons of advertising money from the electric power companies who run nuke plants all over Japan, and also by a surprising number of ordinary Japanese, usually well-educated and therefore very trusting of the "official" explanations.

Anyway, the Nuclear and Industrial Safety Agency now says a huge amount of hydrogen was generated only a few hours after the fuel rods started to get exposed in the Reactors 1, 2 and 3.

Maybe they've finally read the entries in English Wikipedia about "corium".

And always remember this PM assistant who said "We knew it was meltdown from the beginning, we didn't feel like announcing it", and the MSM who let him get away with it.

(That assistant, Goshi Hosono, is visiting the US (the link is in Japanese) to "exchange" information with high-ranking US officials. He will then go to the UK and France, steadfast supporters and promoters of nuclear energy along with the US and Japan.)

From Yomiuri Shinbun (9:43PM JST 6/8/2011):


The Nuclear and Industrial Safety Agency (NISA) of the Ministry of Economy, Trade and Industry (METI) analyzed the data that suggests the maximum 1 ton of hydrogen gas was rapidly generated within few hours that the fuel rods in the Reactors 1, 2 and 3 started to get damaged at Fukushima I Nuclear Power Plant.


The majority of the hydrogen gas was generated within the first few hours, which probably led to the hydrogen explosions in the reactor buildings.


According to the NISA's analysis, the water level in the Reactor Pressure Vessel at Reactor 1 started to decline at about 5:00PM on March 11, 2 hours after the earthquake. The fuel rods started to get exposed, and one hour later zirconium in the cladding started to interact with water, generating hydrogen gas. Within few hours, most of 1 ton of hydrogen gas was generated.


Hydrogen gas started to get generated at about 8:00PM on March 14 in Reactor 2, and at about 10:00AM on March 13 in Reactor 3. In both cases, it took place within 2 hours after the fuel rods started to get exposed. The amount of hydrogen gas in Reactor 2 was 0.8 ton, and 1 ton in Reactor 3.


Anonymous said...

Robbie001 sez:

Speaking of things that are hidden here's something that may as well be hidden. How many people in the US or abroad know about the 2002 near miss at the Davis-Besse PWR in Ohio? Davis-Besse was known as the Reactor with a hole in it's head.

A list of problems found at Davis-Besse since it started operation. (with footnotes)

netudiant said...

This is actually pretty poor.
The hydrogen generation in the event of a loss of coolant was a well recognized phenomenon, so much so that TEPCO did an expensive retrofit after the Three Mile Island accident studies were published, specifically to manage the hydrogen problem. Everybody recognized that hydrogen is very energetic as well as explosive over a very wide range of concentrations.
These retrofits failed entirely and may in fact have contributed to the destruction of reactor 4, if TEPCOs analysis is correct. So there are major implications for the entire nuclear community, not simply those reactors operating in Japan.

Anonymous said...

Robbie001 sez:

Hey check it out our representatives are grilling NRC Chairman Jaczko over Yucca Mt. and his Fukushima 50 (mile) evacuation decision. They really want to ram it to him but they have to be careful or they'll "ruin" the NRC's reputation. I hope Jaczko looses it and publicly releases all the radiation reading from early on in the Fukushima disaster. That should give his detractors in the nuclear industry nightmares.

"Last week, a House Appropriations Committee cardinal called on the NRC chairman to quit. “I think Chairman Jaczko needs to go,” said Rep. Mike Simpson (R-Idaho), head of the panel that oversees Environmental Protection Agency and Interior Department spending.

Congress has tried to disarm executive agencies such as the EPA on several fronts. (increasing radiation levels comes to mind) But its dance with the NRC, an independent regulator, is a bit more complicated.

More than with most other industries, the success — if not the continued presence — of the nuclear power industry depends on whether the independent regulator is thorough, effective and apolitical.(actually it mostly depends on the public forgetting it is there) As general supporters of nuclear power, Republicans have had to tread carefully on the NRC’s reputation, so lawmakers are seeking to portray Jaczko as a political operative who holds extreme views within the commission".

"But as a result, House Oversight and Government Reform Committee Chairman Darrell Issa (R-Calif.), who is also investigating Yucca Mountain, asked the NRC to turn over documents detailing how it came up with the 50-mile recommendation".

arevamirpal::laprimavera said...

@robbie, what do these pols don't like about 50-mile evacuation zone? That was the right decision, too bad Japanese didn't listen to that warning meant for Americans.

If they are saying this because they want to maintain the safety myth by sticking to 10-mile evacuation zone in the US, they are worse than the Japanese counterpart.

Anonymous said...

" ...a surprising number of ordinary Japanese, usually well-educated and therefore very trusting of the "official" explanations..."
Weird. Finding the same with the japanese here abroad. Just question the safety outside Fukushima pref. and you're done. Everything starts to fall apart. You become an ugly person, you're cheating on money, on work... and sentimentally you have become a crap. Long forgoten little problems come again to ruin your life...
Poor mixed couples, I bet they are in hard times.

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