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Japan hit with 9.0 Earthquake and 45 ft Tsunami

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:lol: My attention was lacking - watching TV and typing at the same time.
 
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http://edition.cnn.com/2011/WORLD/asiapcf/03/21/japan.nuclear.reactors/index.html?on.cnn=1

Tokyo (CNN) -- Officials were training workers Monday to spray the Fukushima Daiichi nuclear power plant's stricken reactors with concrete -- one of several efforts underway to curb the release of more radioactive material.
A 9.0-magnitude earthquake and subsequent tsunami on March 11 has devastated northeast Japan, with more than 8,600 dead and 13,000 missing. But most of the concern, and uncertainty, since then has centered on the Daiichi plant, some 240 kilometers (150 miles) north of Tokyo, as authorities rush to stave off a nuclear crisis over an 11-day span marked by explosions and fears of meltdowns.
Those efforts include a move to possibly encase one or more of the reactors in concrete, a last-ditch effort similar to what was done after the 1986 meltdown at the Chernobyl nuclear plant in the former Soviet Union -- considered the worst nuclear disaster at a plant.
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Tokyo (CNN) -- Officials were training workers Monday to spray the Fukushima Daiichi nuclear power plant's stricken reactors with concrete -- one of several efforts underway to curb the release of more radioactive material.
A 9.0-magnitude earthquake and subsequent tsunami on March 11 has devastated northeast Japan, with more than 8,600 dead and 13,000 missing. But most of the concern, and uncertainty, since then has centered on the Daiichi plant, some 240 kilometers (150 miles) north of Tokyo, as authorities rush to stave off a nuclear crisis over an 11-day span marked by explosions and fears of meltdowns.
Those efforts include a move to possibly encase one or more of the reactors in concrete, a last-ditch effort similar to what was done after the 1986 meltdown at the Chernobyl nuclear plant in the former Soviet Union -- considered the worst nuclear disaster at a plant.
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The situation, though bad, will never get to the point of being "Chernobyl 2". They have a steel and concrete building surrounding the reactor vessel, unlike Chernobyl. And unlike Chernobyl, and because the reactor in in a containment building, any failure to cool crisis won't result in an explosion of steam hurling the reactor head off its base, making it topple over on its side and expose the reactor core. Because that did not, and could not happen with this design, the reactor core will not be blown out of the reactor vessel and exposed to the world, like the Russian's neet-o design. In Japan, the melting of the fuel rods in this event will still all happen inside the big concrete and steel shell, and not lying out on the lawn. So unlike Chernobyl, what's left of the core won't lay out there, melting, until the vessel and its fuel become a flowing, burning mass of radioactive debris. And because none of that happened in Japan, you won't have a situation where the graphite moderator is on fire - all while sitting out exposed to the environment, with radioactive decay products being carried by an out of control fire plume and hurled into the sky...

But other than that, yeah, it's just like Chernobyl. :shake:

(Not you OCB, but [censored] CNN and their panic inducing reporting)

Like I said previously, the moment they pumped sea water into the vessel the plants were likely done as operational units, and the possibility that the use of concrete and/or lead, etc., to create a barrier to isolate the reactor was a possibility. But equating use of concrete in one - to the use of concrete in the other to bring in a Chernobyl reference - is as relevant a point of intersection as noting that Mother Teresa and Lindsey Lohan had both used tampons, and thus had similar life experiences.
 
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From ENS Margaret Morton USS Mustin:

Dear friends and family, I am in complete amazement. The number of recipients of this e-mail has grown exponentially, and I quite literally have received replies from people all over the world. I have shared your thoughts and prayers with my sailors and they appreciate the support as much as I do. I am writing to give a second update on the events off the coast of Sendai.
I stood watch this morning from 2-7 am, carefully maneuvering through the darkness so as not to hit half submerged cargo boxes and overturned boats.

To add to the challenge, our visibility decreased from about 8 miles to less than one in a matter of minutes as we entered into a blizzard. And if that wasn?t enough, we still are remaining cautious of the radiation hazard a couple hundred miles away and feeling various aftershocks. In my Captain?s words, ?You couldn?t write this stuff.? Every day has been an adventure.

Today our helo was vectored off to an isolated hospital with SOS showing on the rooftop. This hospital contained over 200 patients still alive and in desperate need of supplies. We delivered food, water, clothing, and blankets. The pilots are about to make a final run for the day right now and are calling for any last things we can bear to give up. I managed to grab another jacket from my closet and my old UGG boots. I figure I don?t need much more than coveralls and a pair of black boots to live on a ship.

A major concern for us out here on the water is the people we left behind. The Navy has around 25,000 people living in the Yokosuka area. As a preemptive measure, they have just begun voluntary evacuation of families from Japan due to the uncertainty of the nuclear plants and the potential for the winds to shift and spread radiation to the south. They also are feeling the many aftershocks from the initial earthquake, including a six that occurred just across Tokyo Bay from the base. For me, I only have to worry about the state of my household goods, for most of my sailors, they have a lot more on the line.

Please keep all of these people affected in your prayers, from those suffering from injury and loss, to those isolated, yet struggling to survive, and finally for the Sailors and their families who want to help, but must care for their own at the same time.

Many of you have asked how you can help and for now, I don?t have much information as we are only doing what we can from the ship. However, people from our ship are donating money to the American Red Cross who has been working with the Japanese Red Cross to tailor to their specific needs. I will try to find a point of contact in Japan that can provide more information on donations.

Again, thank you for your support, your prayers, your pictures, and the notes you have sent. I am very thankful to have such an awesome group of people to lift me up. Love
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Fukushima faced 14-metre tsunami

Tokyo Electric Power Company has revised its estimated size of the earthquake and tsunami that hit the Fukushima Daiichi nuclear power plant.

This is the third upward revision of tsunami's scale since it disabled emergency power generators and heat removal pumps at Fukushima Daiichi on 11 March. The loss of these systems left units 1, 2 and 3 in severe trouble that has only stabilised after the write-off of the reactors, which are now being cooled by seawater injection. Some used fuel ponds at the site remain a serious concern and spraying to maintain water levels is ongoing.

In early statements, Tepco had said the tsunami was at least seven metres high. Later the company increased its estimate to ten metres at the Daiichi plant and 12 metres at Daini. Today's figures describe a 14-metre tsunami at both plants. By regulation, the Daiichi plant was fully prepared for a tsunami of up to 5.7 metres. At Daini, ten kilometres along the coast, the design basis was 5.2 metres.

More detailed data of the ground acceleration rates caused by the magnitude 9.0 earthquake have also been made available by Tepco. Although not all the data has yet been collected, they record very powerful tremors that exceed the design basis in one dimension.

At the Daini plant, ground accelerations ranged from 186 gal in the vertical plane at unit 1 to 277 gal from north to south at unit 3, as recorded by sensors in the reactor building foundation. The range of design basis figures is a spread from 415 gal to 512 gal.

At Daiichi there is still no data for units 1, 2 and 5, but available figures put the maximum acceleration as 507 gal from east to west at unit 3. The design basis for this was 441 gal. Other readings were below design basis, although east-west readings at unit 6 of 431 gal approached the design basis of 448 gal.
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well I guess facing a wall of water nearly 3x the height of what the design was made for could cause issues....

http://www.world-nuclear-news.org/RS_Fukushima_faced_14-metre_tsunami_2303113.html
 
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