Quote:
Originally Posted by photon
Not even close to Chernobyl.
|
I agree. This will be worse. Chernobyl 4 only had 192 tonnes of fuel with no spent fuel pools involved
http://www.world-nuclear.org/info/chernobyl/inf07.html
The Daiichi complex had a total of 1760 metric tons of fresh and used nuclear fuel last year.
http://www.nirs.org/reactorwatch/acc...powerpoint.pdf
The bombs dropped over Hiroshima & Nagasaki contained less than 20 kilograms of fissionable material. Neutron sources have been found up to 1 mile from the units, most likely from the exploded fuel pools from reactor's 3 & 4.
http://fukushimafaq.wikispaces.com/f...+26march11.pdf
From Reuter's today:
"The operator of Japan's crippled Fukushima Daiichi nuclear power plant said on Tuesday that they are concerned that the radiation leakage could eventually exceed that of the 1986 Chernobyl nuclear disaster.
"The radiation leak has not stopped completely and our concern is that it could eventually exceed Chernobyl," an official from operator Tokyo Electric and Power told reporters on Tuesday."
http://www.reuters.com/article/2011/...00635920110412
Comparing radioactive cesium or iodine with naturally occurring radioactive substances - even those which can become internal emitters (bannanas for instance) - is incorrect and misleading. For internal emitters, quantum effects dominate and the energies are very high due to the small distances involved. There is no legitimate comparison between a one-time X-ray and ingesting particles that continuously radiate you for the rest of your life.
http://www.jstor.org/pss/3570629
http://www.ncbi.nlm.nih.gov/pubmed?t...%20emitters%22
Quote:
Originally Posted by photon
But let's hear your prediction. You say "Japan is in for a grim summer once the south winds establish." Define grim.
|
Water contaminated, air contaminated, animal life contaminated, food contaminated. No known solution in sight. We are all, globally, in the grip of a disaster that has no easy ending.
What impact?
For starters, they have lost the Kanto Plain where a lot of the Japan's food is grown:
http://hosted2.ap.org/APDEFAULT/cae6...62912a89d44092
http://www.asahi.com/english/TKY201104080169.html
Quote:
Originally Posted by photon
How many deaths?
|
Using only radiation readings that have been publicly released to date, not accounting for any future releases that are ongoing: 200,000. 66% of these within 10 years.
http://fairewinds.com/content/health...ittee-radiatio
What level of radiation?
Depends how close, which way the wind blows and how long it takes them to stop the continuous releases from the plant (still around 1 terrabecquerel an hour, I'll get you the link if you really want...)
"The accumulated amount of radiation in the soil at Iitate, Fukushima Prefecture--which is located outside of the 30-km radius--calculated over a three-month period would exceed the annual accumulated amount of 20 millisieverts that the central government is considering as a guideline for evacuating residents"
http://www.asahi.com/english/TKY201104080169.html
Low cumulative doses are not harmless. They increase the risk of cancer. See this study:
http://www.cheec.uiowa.edu/misc/radon.html.
Quote:
Originally Posted by TheCommodoreAfro
As for Giver99 - who has nothing at stake in this...
|
This is global and we all have a stake in it. Should we lock the thread and keep it locals only?
Quote:
Originally Posted by TheCommodoreAfro
The fact there was a spread of radioactivity 20km outside of the plant meets the definition of a 7, that's why they changed it. Not because of any new developments or risks.
|
Level 7 is defined as a “major release of radioactive material with widespread health and environmental effects requiring implementation of planned and extended countermeasures,” according the International Nuclear Event Scale
http://en.wikipedia.org/wiki/Interna...ar_Event_Scale
Quote:
Originally Posted by TheCommodoreAfro
In fact, airborne readings in Yokohama (much, much, closer than France is to the plant, BTW) and Tokyo show declining background radiation very much normal.
http://www.city.yokohama.lg.jp/kankyo/saigai/
(As a funny aside, Tokyo's readings are still half of Hong Kong's normal daily readings FWIW)
|
See above, it just depends on the wind.
Quote:
Originally Posted by TheCommodoreAfro
The stuff is local, and it's terrible for the people around the area in Fukushima, but it's not being projected with huge velocity into the atmosphere. That's the huge, major difference between Chernobyl and Fukushima.
|
In Chernobyl, the core got expelled as high as what was left of the reactor's roof. In Fukishima, they are bulldozing core material that emits a neutron beam that has landed a mile away.
http://fukushimafaq.wikispaces.com/f...+26march11.pdf
Go back in the thread quite a few pages and watch the explosions on youtube. If I could white board it for you, I would draw the secondary containment vessel with a box above showing the spent nuclear pool. Vessel explodes, pool above vessel gets taken along with it, nuclear rods, & fissile material launching into the sky.
Quote:
Originally Posted by TheCommodoreAfro
The site you quoted defines "eating fresh milk" and "leafy veg" as risky behavior. (Funny in itself) And then throws out numbers that are completely not even out of the ordinary, relying on people's ignorance of radiation to scare them into believing the problem is bigger than it is.
|
You might want to bone up a bit more on radiation. Th EPA’s MCL for iodine-131 is
3 picoCuries per liter of water. (0.11 Bq/L) google it...
Also, this was translated so expect a bit of noise. The levels exceed what the EPA et al have previously outlined as safe and studies of Chernobyl fallout have validated as harmful, especially when concentrated in the thyroid of small children.
http://www.who.int/mediacentre/facts.../en/index.html
I don't know if Tokyo will be abandoned or not when the south flow picks up in the coming weeks. It is pretty far from the nuclear plant which is promising. On the other hand the water shed for Tokyo lies mainly to the north, closer to the plant.