Post: #25081

4000 Becquerel in Tokyo Bay by March 2013

Simulation results in an accident of Tokyo Electric Power Co. Fukushima Daiichi Nuclear Power Station, the concentration of radioactive cesium accumulate on the ocean floor is flowing into the Tokyo Bay is highest in March of next year, to reach 4,000 becquerels per kilogram in mud, Kyoto University research group has been summarized.

Group of Disaster Prevention Research Institute, Kyoto University, the simulation uses the survey data, such as radioactive material that fell to the Fukushima Daiichi nuclear power plant accident in Kanto, to predict 10 years after the accident, the radioactive cesium accumulate on the ocean floor is flowing into the Tokyo Bay was performed.

The result is that it is estimated, the concentration of radioactive cesium is highest in March of next year, in the vicinity of the mouth of the Arakawa, 4000 becquerel per kilogram to reach regional mud. This is similar to the values ​​found in sea floor 16 kilometers south of Fukushima Daiichi nuclear power plant in January this year.

In the northern part of Tokyo Bay and found a relatively higher concentration is that it was calculated to be about 500 from 300 becquerel per kilogram becquerel mud of the seabed on average.

From April of next year, on the other hand radioactive material flowing from surrounding rivers is reduced, we have for the diffusion proceeds, the concentration falls gradually.

Associate Professor Isao Akira threshold mountain was simulated by including the amount of rain "is continuously examine with the accumulated amount to the seabed. There is a possibility of radioactive material into the Tokyo Bay speed is accelerated, the impact on fish and shellfish We talk with "We should be monitored or not.


東京湾 再来年４０００ベクレルに
http://www3.nhk.or.jp/news/html/20120526...91000.html

Post: #25082

Tokyo soil so contaminated with radiation it would be considered nuclear waste in US

Radioactive fallout from the Fukushima Daiichi nuclear disaster continues to show up at dangerously high levels in the city of Tokyo, which is located roughly 200 miles from the actual disaster site. According to an analysis of five random soil samples recently taken by nuclear expert Arnie Gundersen, the soil around Tokyo is so contaminated with Fukushima radiation that it would be considered nuclear waste here in the U.S.

During a recent trip to Tokyo, Gundersen collected soil samples from a sidewalk, a children's playground, a rooftop, a patch of moss by the side of a road, and the lawn of a judicial building. After sending those samples in for testing, it was revealed that each one had high levels of radioactive cesium-134 (CS134) and cesium-137 (CS137), while three of the samples contained high levels of cobalt-60 (CO60). One of the samples also tested positive for uranium-235 (U235).

"When I was in Tokyo, I took some samples [...] and sent them to the lab," said Gundersen in a recent video report. "And the lab determined that all of them would be qualified as radioactive waste here in the United States and would have to be shipped to Texas to be disposed of."


http://www.naturalnews.com/035963_Tokyo_...z1vxwp1idC


Laboratory Test Results: Tokyo Soil Samples
http://www.fairewinds.com/content/labora...il-samples

Post: #25083

Hosono checks reinforced fuel pool at Fukushima's ripped reactor building

Nuclear disaster minister Goshi Hosono inspected Saturday how a spent fuel storage pool cooling a large number of nuclear fuel rods inside the damaged No. 4 reactor building of the crisis-hit Fukushima Daiichi plant has been reinforced to brace for major aftershocks.

Hosono, the first Cabinet minister to enter a troubled reactor building, also observed preparatory work to decommission the Nos. 1 to 4 reactors at the six-reactor complex and told reporters he managed to confirm that the building's floor is not tilted and that reinforcement supports the bottom of the pool.

The No. 4 reactor, which was under maintenance when the March 2011 earthquake and tsunami caused the crisis, has 1,535 fuel assemblies, including those removed during the service work, stored and stably cooled in the pool.

http://english.kyodonews.jp/news/2012/05...um=twitter

Post: #25084

Japan Nuclear Radiation Spreads To Houses, Food, Baby Formula

CNN reports:

http://www.youtube.com/watch?v=yOUZb1lCPq4

Post: #25085

Fukushima I Nuke Plant Press Tour 5/26/2012

In Japanese but contains lots of new footage.

http://www.youtube.com/watch?v=JA39Dpg9C...r_embedded

Post: #25086

•REC  Wrote:

Japan Nuclear Radiation Spreads To Houses, Food, Baby Formula

CNN reports:

http://www.youtube.com/watch?v=yOUZb1lCPq4

i still want to know why there is no international effort to entomb these f*cking reactors
everytime i see pictures of that place it looks just as f*cked up as it did over a year ago
it's like they want it to escape

Post: #25087

May 24 - Helicopter Fukushima Flyover (3km)

http://www.youtube.com/watch?v=HcveCEwQq...r_embedded

Post: #25088

•REC  Wrote:

Hosono checks reinforced fuel pool at Fukushima's ripped reactor building

Nuclear disaster minister Goshi Hosono inspected Saturday how a spent fuel storage pool cooling a large number of nuclear fuel rods inside the damaged No. 4 reactor building of the crisis-hit Fukushima Daiichi plant has been reinforced to brace for major aftershocks.

Hosono, the first Cabinet minister to enter a troubled reactor building, also observed preparatory work to decommission the Nos. 1 to 4 reactors at the six-reactor complex and told reporters he managed to confirm that the building's floor is not tilted and that reinforcement supports the bottom of the pool.

The No. 4 reactor, which was under maintenance when the March 2011 earthquake and tsunami caused the crisis, has 1,535 fuel assemblies, including those removed during the service work, stored and stably cooled in the pool.

http://english.kyodonews.jp/news/2012/05...um=twitter

Is THIS what a stable building should look like??

Post: #25089

NYT: Concerns Grow About Spent Fuel Rods at Damaged Nuclear Plant in Japan

Fourteen months after the accident, a pool brimming with used fuel rods and filled with vast quantities of radioactive cesium still sits on the top floor of a heavily damaged building, covered only with plastic.

The operator, Tokyo Electric Power Co., or Tepco, has tried to assuage the fears, recently issuing a seven-page report, complete with diagrams and photographs, that details reinforcement work carried out last summer at the building that houses the pool at Reactor No. 4, and emphasizes its safety. And some outside experts say that the fuel in the pool is now so old that it cannot generate enough heat to start the kind of accident that would let radioactive material escape.

To try to quell worries, the government on Saturday sent the environment and nuclear minister to the plant, where he climbed a makeshift staircase, in full protective garb, to take a look at the pool. He later told reporters that it appeared sufficiently reinforced.

But many Japanese have scoffed at such assurances and point out that even if the building is sound, which they question, the jury-rigged cooling system for the pool has already malfunctioned twice, once for a period of 24 hours. Had the outages continued, they would have left the rods at risk of dangerous overheating.

“The No. 4 reactor is visibly damaged and in a fragile state, down to the floor that holds the spent fuel pool,” said Hiroaki Koide, an assistant professor at Kyoto University’s Research Reactor Institute and one of the experts raising concerns. “Any radioactive release could be huge and go directly into the environment.”

The worst-case situations for Reactor No. 4 would be for the pool to run dry if there is another problem with the cooling system and the rods catch fire, releasing enormous amounts of radioactive material, or that fission restart if the metal panels that separate the rods are knocked over in a quake. That would be especially bad because the pools, unlike reactors, lacks containment vessels to hold in radioactive material. (Even the roof that used to exist would be no match if the rods caught fire, for instance.)

There is considerable disagreement among scientists over whether such catastrophes are possible. But some argue that whether the chances are small or large, changes should be made quickly because of the magnitude of the potential calamity.

Senator Ron Wyden, a Democrat whose state, Oregon, could lie in the path of any new radioactive plumes and who has studied nuclear waste issues, is among those pushing for faster action. After his recent visit to the ravaged plant, Senator Wyden said the pool at No. 4 poses “an extraordinary and continuing risk” and the retrieval of spent fuel “should be a priority given the possibility of further earthquakes.”

According to Tepco, the pool at the No. 4 reactor, which was not operating at the time of the accident, holds 1,331 spent fuel assemblies, which each contain dozens of rods. Several hundred of the rods were removed from the core just three months before so the vessel could be inspected. Those rods, which were not fully used up, could more easily support chain reactions than the fully-spent fuel.

Mr. Koide and others warn that Tepco must move more quickly to transfer the fuel rods to a safer location. But such transfers have been greatly complicated by the nuclear accident. Ordinarily the rods are lifted by giant cranes, but at Fukushima those cranes collapsed during the series of disasters that started with the earthquake and included explosions that destroyed portions of several reactor buildings.

Tepco has said it will build a separate structure next to Reactor No. 4 to support a new crane. But under the plan, released last month, the fuel removal will begin in late 2013.


http://www.nytimes.com/2012/05/27/world/...&seid=auto

Post: #25090

http://www.nytimes.com/2012/05/27/world/...gewanted=2

Concerns Grow! Ha

Not for me, my concern reached maximum level 1 year ago. What is happening now is what we predicted in this forum and the physics forum a year ago as unavoidable facts.

Until next time,
Engineer

Post: #25091

You can not entomb them, please read this thread, we already explained it in detail, if you want more detail, we also had a quite specific discussion in the physics forum, entombing would make things worse since you must control physical distribution of the material and keep it cold.

freebyrd  Wrote:

•REC  Wrote:

Japan Nuclear Radiation Spreads To Houses, Food, Baby Formula

CNN reports:

http://www.youtube.com/watch?v=yOUZb1lCPq4

i still want to know why there is no international effort to entomb these f*cking reactors
everytime i see pictures of that place it looks just as f*cked up as it did over a year ago
it's like they want it to escape

Post: #25092

TEPCO eyes trial removal of unused fuel from Fukushima No. 4 fuel pool

TOKYO, May 27, Kyodo

Tokyo Electric Power Co. is considering removing two unused nuclear fuel assemblies stored in the spent fuel pool of the crisis-hit Fukushima Daiichi power plant's No. 4 reactor unit around July, officials said Sunday.

The operation would serve as a trial for the removal of a huge amount of fuel left in the pool, a key priority in dealing with the plant because the upper part of the building housing the reactor and the pool was blown off by a hydrogen explosion in the early days of last year's nuclear crisis.

As unused fuel is not generating heat from nuclear fission, it is less dangerous to handle than spent fuel. The utility known as TEPCO is hoping to determine the extent of damage to the unused fuel assemblies and ways to store them.


http://english.kyodonews.jp/news/2012/05...um=twitter

Post: #25093

May 26 Press Tour: 4 Reporters Did Go Up to the Top Floor of Reactor 4 at Fukushima I Nuke Plant, in 330 Microsievert/Hr Radiation

Four reporters including those from Yomiuri Shinbun and NHK went up to the operation floor of the Reactor 4 building with Minister Goshi Hosono as part of the third press tour of Fukushima I Nuclear Power Plant on May 26, 2012.

It looks the heavy equipment, probably for removing the debris, is sitting on top of the platform over the Reactor Well.

http://ex-skf.blogspot.co.uk/2012/05/may...go-up.html

http://www.youtube.com/watch?v=8N_cnt37P...r_embedded

Post: #25094

Inside of the Fukushima Daiichi Nuclear Power Plant Reactor 4

http://www.dailymotion.com/video/xr4y2y_...tor-4_news

Post: #25095

“In case of the major aftershock, all the reactors will be in crisis”

Actual Fukushima worker Happy11311 admits if another major aftershock hits Fukushima, they can’t even get close to the reactors and the risk is not only SFP4, it would be all the reactors.

https://twitter.com/#!/Happy11311

I tweeted this before but in case of another major aftershock or Tsunami, it won’t be only reactor4. I think all the reactors will be in crisis. Tepco says they have prepared multiple coolant means, but if the radiation level goes too high, we can not even get close. Also even if the reactor buildings remain safe, roads won’t be safe to approach the reactors.

Actually 311 caused a lot of cracks on the ground, there were a lot of places where you can not drive by car. Even pumper trucks or fire trucks can not drive maybe. Above all, now we don’t have enough human resource nor engineers to settle down reactor4 in addition to other reactors.

If you drive from Iwaki, it would take 6 hours if the situation is as bad as 311. Also, there as a heliport on the ground in 311, but it will be removed soon though we are supposed to build a heliport somewhere in the plant area..

They all plan to build tanks for contaminated water, but there is no plan to build a heliport. There used to be one, but not anymore.

In case of another major aftershock or Tsunami, it’s not self defense force, fire brigades or riot police, it’s us, normal plant workers to try to settle it down.


http://fukushima-diary.com/2012/05/actua...in-crisis/