Reactor No. 1 Suffers Nuclear Meltdown at Fukushima Daiichi, Radioactive Water Possibly Leaking
May 13, 2011 5:45 PM
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Tepco engineers use concrete to seal leaks
The top five feet of the core's 13 ft-long fuel rods had melted down after being exposed to the air
Tokyo Electric Power Company (Tepco)
has announced that the No. 1 reactor at the Fukushima Daiichi nuclear power plant has suffered a nuclear meltdown.
The Fukushima Daiichi nuclear power plant was first commissioned in 1971 and is located in the Futaba District of Fukushima Prefecture, Japan. On March 11, 2011, a
9.0-magnitude earthquake struck Japan
, resulting in the disabling of
reactor cooling systems
, radiation leaks and an evacuation zone.
Engineers from Tepco entered the No. 1 reactor for the first time at the end of last week and found that the top five feet of the core's 13 ft-long fuel rods had
after being exposed to the air.
Engineers originally thought only 55 percent of the
core was damaged
since it was submerged in enough water to keep cool and stable, but after discovering a pool of molten fuel at the bottom of the containment vessel, they now worry that this molten fuel burned a hole at the bottom of the vessel prompting water to leak.
Tepco recently sealed a leak at the No. 3 reactor after radioactive water had seeped into the ocean. Also, the No. 2 reactor had radioactive water flowing into the ocean in April. According to Greenpeace, "significant amounts" of radioactive material had slipped into the sea. In fact, illegal amounts of iodine and caesium were found in seaweed as far as 40 miles from the Fukushima Daiichi plant.
In 22 samples of seaweed, ten contained five times the legal limit of iodine 131 and 20 times of caesium 137. This is an issue for several reasons, including the fact that the Japanese household consumes almost 7 lbs of seaweed annually, and fisherman are preparing to harvest this seaweed on May 20.
Engineers have decided to quit flooding the entire reactor core with water because it might make the leak worse. Currently, there is plenty of water at the bottom of the containment vessel to keep the remaining fuel rods and the melted fuel cool.
"We will have to
revise our plans
," said Junichi Matsumoto, Tepco spokesman. "We cannot deny the possibility that a hole in the pressure vessel caused water to leak."
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RE: So, when are you guys leaving for Japan ?
5/15/2011 6:02:24 PM
I have to agree. Everyone talks about how it won't be dangerous very long but that is not the case. As stated earlier Bikini Atoll is a perfect example. Japan has a large part of it's diet based on seafood. Seafood which has been exposed to EXTREMLY high levels of radiation. This does not include the aquatic plant life which is also a large part of their diet.
It's easy to sit somewhere in a land-locked area eating beef and pork while making the statements that Japan will not be exposed to dangerous levels for an extended period of time.
With as dense a population as Japan has every square meter of ocean that has become radiated is now a threat to their health due to the type of diet.
I also agree that they make it seem "safe" with their postings of how fast the radition will go away but they say that while sitting at a PC thousands of miles away from the affected area. Think it's safe? Move your ass to Japan and eat seafood and kelp!
RE: So, when are you guys leaving for Japan ?
5/15/2011 10:32:45 PM
I'm specifically not moving to Japan for reasons that have absolutely nothing to do with radiation. Like not knowing Japanese, for one. There is also the whole 'my entire family is in the US' thing and the 'I don't have that much money' thing.
It is easy to sit at a computer and tell people to move to Japan while you sit there eating your chips.
"Intel is investing heavily (think gazillions of dollars and bazillions of engineering man hours) in resources to create an Intel host controllers spec in order to speed time to market of the USB 3.0 technology." -- Intel blogger Nick Knupffer
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