http://www.independent.co.uk/news/world/asia/partial-meltdown-hits-fukushima-nuclear-plant-2283234.html‘Situation’ at No. 1 reactor “could escalate rapidly if the lava melts through the reactor vessel” Fears that Reactor No. 3 “which contains MOX plutonium fuel, may have also suffered a meltdown”snip
Tepco general manager Junichi Matsumoto told reporters in Tokyo that the discovery means its timetable to entomb the containment reactor vessel in water may have to be scrapped. "We can't deny the possibility that a hole in the pressure vessel caused water to leak," Mr Matsumoto said. Observers fear that Reactor 3, which contains MOX plutonium fuel, may have also suffered a meltdown, and the situation inside Reactor 2 is still shrouded in mystery.
"The situation is clearly far more serious than previously reported, and could escalate rapidly if the lava melts through the reactor vessel," warned Jan Beránek of Greenpeace.
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http://www.lucaswhitefieldhixson.com/tokyo-japan-being-hit-massive-radiation-may-13th-2011Tokyo Japan Being Hit With MASSIVE Radiation May 13th 2011 (video plus charts)-------------------------------------------------------------------------------------------------------------------------------------------
http://mainichi.jp/select/today/news/20110511k0000e040059000c.htmlOff the Scale: Radiation in No. 1 reactor building exceeds 1,000 millisieverts per hour — Levels too high for Geiger counter to measuretranslated:
経済産業省原子力安全・保安院は11日、東京電力福島第1原発1号機の原子炉建屋2階で、1時間当たり1000ミリシーベルトを超える高濃度の放射 性物質を測定したと発表した。1号機は冷却装置の設置に向けた準備を進めている。この数値は短時間での作業すら難しくする高い線量で、保安院の西山英彦審 議官は「冷却のための配管のつなぎこみ作業に影響するかもしれない」との見方を示した。
Ministry of Economy, Trade and Industry's Nuclear and Industrial Safety Agency (NISA) announced on May 11 that the radiation level exceeded 1,000 millisieverts/hour on the 2nd floor of the Reactor 1's reactor building at Fukushima I Nuclear Power Plant. TEPCO has been preparing for the work to install the external cooling system inside the reactor building. This radiation level may be too high for workers to enter and work even for a short period of time. NISA's spokesman Nishiyama said the high radiation "may affect the work to connect the pipes for the cooling system."
高かったのは、炉心を緊急に冷却するための装置の弁付近。10日午後0時45分から5分間計測したところ、床から1.6メートルの高さ付近では、計測器が振り切れたという。
The location that registered the high radiation level was near the valve of the emergency core cooling system. Measurement was done for 5 minutes starting 12:45PM on May 10 (JST), and at 1.6 meters from the floor the Geiger counter went overscale . 1号機では9日にも同建屋1階で1時間当たり600~700ミリシーベルトが検出されている。
The radiation level of 600 to 700 millisieverts/hour was detected on the 1st floor of the same reactor building on May 9.
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Top DOE official: US “had difficulty grasping what was actually happening” at Fukushima (VIDEO)http://www3.nhk.or.jp/daily/english/13_20.html-------------------------------------------------------------------------------------------------------------------------------------------------
http://ex-skf.blogspot.com/2011/05/from-tepco-presser-on-may-12-part-3.htmlTEPCO: Reactor No. 2 and 3 water level gauges “not very trustworthy” — Likely malfunctioning as No. 1 didThe water gauges for the Reactors 2 and 3 are not to be trusted, said TEPCO's Matsumoto in the press conference on May 12 (I watched the live-recorded video) when the company officially acknowledged the meltdown of the Reactor 1. If the water gauges for the Reactors 2 and 3 have been overstating the water levels, just like in the Reactor 1, it is very likely that all three reactors have hardly any water inside the Reactor Pressure Vessels (RPV), and the reactor cores are likely to have been melted. Just like Michio Ishikawa of Japan Nuclear Technology Institute said on April 29.
About the water gauges for the Reactors 2 and 3: "They are probably in the same condition as that of the Reactor 1. The numbers the gauges are currently showing are not very trustworthy. We need to monitor carefully with other parameters like pressure."
Weak points in the RPV and Containment Vessel: "The RPV has more than 100 small pipes running through the bottom. Any one of them could have been damaged. We cannot completely deny that the fuel itself damaged the RPV. The Containment Vessel also has pipes, and it is possible that they got damaged when the pressure rose or when there was a hydrogen explosion."To confirm, TEPCO does not deny that the fuels have all melted and went down? "We don't deny that. How much of the fuels have melted we cannot say for certain, but our understanding is that they melted, and didn't retain the original shapes, and moved downward."
"We don't deny that part of the melted fuels may have damaged the RPV and escaped the RPV."
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http://www.yomiuri.co.jp/dy/national/T110513005828.htm“Highly dangerous” levels of radiation detected in No. 3 MOX reactor building — Double amount from AprilA robot has detected highly dangerous levels of radiation in the Fukushima No. 1 nuclear power plant's No. 3 reactor building, it has been learned, indicating further safety measures will be needed before workers can enter the structure.
According to plant operator Tokyo Electric Power Co., the remote-controlled PackBot robot on Tuesday found radiation levels in the northwestern section of the building of 49 to 120 millisieverts per hour, which would pose a threat to human workers. Time must be spent, therefore, removing or sealing up the radiation-contaminated debris in the building, before TEPCO starts work to stabilize the damaged reactors. When similar measurements were conducted around doors in the southern section of the building on April 17, the radiation levels were 28 to 57 millisieverts per hour.
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"Until around June, we'll make it our priority to remove debris with robots. We'll then check how radiation levels change," a TEPCO employee said. The company currently has no plans to send workers into the No. 3 reactor building, the employee said. When the PackBot examined the power plant's No. 1 reactor building in April, it found radiation levels had reached 1,000 millisieverts per hour at some pumps. Levels at the other pumps were 10 to 49 millisieverts per hour.
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Water leaks from No. 1 reactor Meanwhile, TEPCO has announced that water has been leaking through small openings in the bottom of the No. 1 reactor's pressure vessel.
Combined, the openings would be equivalent to a hole several centimeters in diameter, and according to TEPCO, were made when melted nuclear fuel damaged the bottom.
The melted fuel likely has accumulated in the bottom of the vessel. TEPCO has admitted the situation is a meltdown, in which melted nuclear fuel cannot maintain its shape and drops down to lower parts of a reactor core. TEPCO had previously said fuel was just partially damaged.
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(May. 14, 2011)
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http://www.youtube.com/watch?v=Xqs-fh79suI&feature=player_embeddedReal severe problem cooling Unit No. 3 reactor — Hydrogen explosion possible (VIDEO)Transcript Summary (Faire Winds Energy)
3:45 Real severe problem cooling Unit No. 3 reactor — Hydrogen explosion possible
6:00 TEPCO acknowledges Unit No. 4 is leaning, tilting at the top — could collapse with aftershock
8:30 All 3 nuclear containments are leaking
9:45 Site has sunk by at least a foot, means concrete has cracked
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http://www.radioaustralia.net.au/connectasia/stories/201105/s3216189.htmJapanese nuclear expert says meltdown has now made cooling “very difficult” (AUDIO)------------------------------------------------------------------------------------------------------------------------
http://hawaiinewsdaily.com/2011/05/will-fukushimas-next-earthquake-start-a-global-extinction-event/Will Fukushima’s Next Earthquake Start A Global Extinction Event? (Hawaii News Daily)snip
The reactors can NEVER be placed in ‘cold shutdown‘ because the cores are partially melted together. We are talking about hundreds of tons of fissile material inside reinforced concrete containment vessels. The containment vessels are cracked. They are releasing radiation. Fission excursions are still occurring and no one can go inside those containments for hundreds of years – even if they could get to the fuel.
They continue to pour water on them and drain it off into the ocean because there is nothing else they can do. If they stop pumping water, the genie comes out. If they keep pumping water, it has to go somewhere and that somewhere is the ocean. It is still a stop gap. Those reactor cores cannot be put into ‘cold shutdown’ or dismantled or entombed. Ever.
They cannot treat as much radioactive water as they have to keep pumping in. No one can. So the radiation is going to come across the Pacific and impact the US and, certainly, Hawaii. Yes, I read that they are going to start treating it or storing it, but the task is impossible. Reactor cores have to be maintained in a ‘clean room’ environment or the water picks up particles – which then become radioactive – which then irradiate the reactor plumbing – and, eventually, become fuel. That’s why they have to keep pumping fresh water in and dumping it out. They cannot recirculate it, even if they manage to get new plumbing installed. The next major earthquake there will begin an extinction event.
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