Posted: Thu May 12, 2011 11:53 am Post subject: Fukushima Nuclear Reactor In Danger of total Collapse
Official sources in Japan have confirmed that the one of the reactor buildings on the Fukushima site is leaning. This confirmation was reported on May 10, 2011.
“Managing public opinion is as serious an operation as managing the crisis itself.”
Nuclear experts on Russia Today reported Tuesday that their is a real danger of a complete collapse of Fukushima nuclear reactor 4.
Japan has announced that the building is leaning and that they are taking measures to reinforce the structure in order to prevent a collapse that would scatter nuclear rods from the spent fuel pool on the ground around the plant.
The flyover video analysis and images captured from the TBS live HD cam show little remains of the building except a burnt out skeleton.
It seems like officialdom is now admitting what people who have been reading along here already have known for a month, and what Japanese officials must have known since shortly after the reactors started exploding.
Fukushima: Twice As Bad As Thought
Posted by EBEN HARRELL Monday, June 6, 2011 at 11:46 am
View Comments • Related Topics: energy , chernobyl, fukushima, nisa, tepco
One recurring theme that has emerged after Fukushima is the tendency of nuclear experts to underestimate (publicly at least) the severity of the disaster. Today we received further proof of this when the Japanese government more than doubled the estimate for the amount of radiation released from the plant in the immediate aftermath of the crisis in March.
Government watchdog The Nuclear and Industrial Safety Agency also said that the meltdowns of the plant's reactor cores--at least one of which we now know suffered a total meltdown—happened much more quickly than Tepco has previously suggested, making it clear that the plant operators' desperate attempts to cool the reactors by dumping sea water on them were largely unsuccessful.
According to news reports, NISA now estimates the total amount of radiation released into the atmosphere in the first week of the crisis at 770,000 terabecquerels. This compares with NISA's previous estimate, released on April 12, of 370,000 terabecquerels for the first month of the crisis. NISA has pointed out that most of the radiation was released in the first week.
The new estimate brings falls in line with another government watchdog, the Nuclear Safety Commission, which has projected the total radiation release at 630,000 terabecquerels, Dow Jones reported.
The latest figure is still only about 10% of the radiation released from the 1986 Chernobyl disaster, which is estimated at 5.2 million terabecquerels.. But the amended estimate further undermines the credibility of Tepco, NISA and the IAEA in the aftermath of the crisis. It's easy to understand why in the frenzied few weeks after the earthquake those three bodies would have wanted to remain cautious when estimating the scale of the emergency—they wanted to prevent panic. But there's a problem with that approach. The nuclear industry has long suffered from a "credibility gap" and low-level of trust from the public. The global community needs to know as quickly and as accurately as possible what's going on in a nuclear emergency. If there is a level of uncertainty about the situation--as there was at Fukushima--officials should emphasize that.
It is often said that one of the scary things about radiation is that you can't see or sense it. In the case of an invisible radiation leak, we should demand that national and international nuclear safety experts be highly visible, and as emphatic as possible.
Almost six months after the event, Japanese officials are admitting some of the obvious facts -- that the radiation coming from the Fukushima reactors has reached lethal levels. They act as if it's a new discovery!
Don't think our officials would be any different.
Pockets of lethal levels of radiation have been detected at Japan's crippled Fukushima Daiichi nuclear plant in a fresh reminder of the risks faced by workers battling to contain the worst nuclear accident since Chernobyl.
Plant operator Tokyo Electric Power (Tepco) reported on Monday that radiation exceeding 10 sieverts (10,000 millisieverts) per hour was found at the bottom of a ventilation stack standing between two reactors.
On Tuesday Tepco said it found another spot on the ventilation stack itself where radiation exceeded 10 sieverts per hour, a level that could lead to incapacitation or death after just a short period of exposure.
The company used equipment to measure radiation from a distance and was unable to ascertain the exact level because the device's maximum reading is 10 sieverts per hour.
What does a 'small spot of radiation leaking' mean? The point is that radiation is gushing out of this wreckage. One seivert is enough radiation to kill a human being. These so-called 'hot spots' are reported to be leaking better than 10 sieverts an hour!
It's OK, though ... nothing to worry about.
While Tepco said the readings would not hinder its goal of stabilising the Fukushima reactors by January, experts warned that worker safety could be at risk if the operator prioritised hitting the deadline over radiation risks.
"Radiation leakage at the plant may have been contained or slowed but it has not been sealed off completely. The utility is likely to continue finding these spots of high radiation," said Kenji Sumita, a professor at Osaka University who specialises in nuclear engineering.
"Considering this, recovery work at the plant should not be rushed to meet schedules and goals as that could put workers in harm's way. We are past the immediate crisis phase and some delays should be permissible."
Workers at Daiichi are only allowed to be exposed to 250 millisieverts of radiation a year.
So ... there's nothing to worry about. They must think we are stupid.
Tepco ... said it had not detected a sharp rise in overall radiation levels at the compound.
"The high dose was discovered in an area that doesn't hamper recovery efforts at the plant," Tepco spokesman Junichi Matsumoto told reporters on Tuesday.
Although it is still investigating the matter, Tepco said the spots of high radiation could stem from debris left behind by emergency venting conducted days after the 11 March earthquake and tsunami that crippled the plant.
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Fukushima Nuclear Reactor In Danger of total Collapse