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Accumulated 24-hour radiation 30 km northwest of Fukushima plant exceeds annual limit on natural dose - Kyodo
Press Release (Mar 24,2011)
Detection of trace amounts of radioactive iodine around an exhaust stack and others of Kashiwazaki-Kariwa Nuclear Power Station
"It is presumed that iodine 131 released into the atmosphere from
Fukushima Daiichi Nuclear Power Station was collected and detected
in Kahiwazaki-Kariwa Nuclear Power Station, since iodine 131 was detected
in radioactivity measurement of the exhaust air of some units and no
abnormality of iodine 131 in nuclear water was detected"
There is no firm basis for setting a "safe" level of exposure above background for stochastic effects. Many sources emit radiation that is well below natural background levels. This makes it extremely difficult to isolate its stochastic effects. In setting limits, EPA makes the conservative (cautious) assumption that any increase in radiation exposure is accompanied by an increased risk of stochastic effects...However, there do appear to be threshold exposures for the various non-stochastic effects.
called the 'linear no-threshold model.' It assumes there is no 'threshold,' that is to say there is no exposure level below which the risk is zero. It also assumes that the risk increases in proportion to the exposure. If the exposure doubles, the risk also doubles. Some scientists strongly dispute the no-threshold assumption.
Yuri Korneev, Boris Stolyarchuk and Alexander Yuvchenko are the last surviving members of the Reactor No.
Some comparative numbers from Chernobyl:
....based ground deposition of caesium-137) to be between 3 and 150 mSv [between a 1 in 6666.67 and a 1 in 133.33 chance of a fatal cancer, assuming the ICRP risk factor of a 5% of a fatal cancer per Sv of exposure] for adults (depending on the distance from the reactor and the day of evacuation) and for one year old children a dose estimate of between 10 and 700 mSv [between a 1 in 2000 and a 1 in 28.57 chance of fatal cancer] has been made. Thyroid doses for adults were between 20 and 1000 mSv, while for the one year old infants these were higher at 20 to 6000 mSv.
Originally posted by Silverlok
reply to post by TheRedneck
if there is already slag (corium) then make that definitely 10% and probably 7-10% of the plutonium (from the molten mass whatever it may be), it's probably why we are not seeing 'official' people with alpha counters or neutron detection equipment taking readings out around fukushima
TEPCO has measured exhaust air from an exhaust stack and vent of each
building of Kashiwazaki-Kariwa nuclear power station with a filter for
a week, and detected iodine 131 up to 2.4 X 10^-8 (becquerel/cm3) at
the exhaust stacks of all buildings, the exhaust vents of service
buildings and auxiliary buildings (Arahama-side) of Unit 3, 5 and 6.
Originally posted by ethancoop
If the radioactive water leak is in the turbine building then it could very well be from pipe damage due to the quakes from earlier. Were those yesterday or today? It's all starting to run together.
Originally posted by -W1LL
aquaponics is huge in china and Aus. a much safer way to grow food especially in todays contaminated earth.
Originally posted by TheRedneck
Sea water is salty (duh!), mostly due to sodium chloride (NaCl, also known as table salt) dissolved in the water. So the question becomes,
Originally posted by TheRedneck
The only way fuel-contaminated water could make it to the main steam lines in the turbine room is through a breach in the heat exchanger... which means the reactor vessel is toast.
a few milligrams of plutonium per kilogram of tissue is a lethal dose
...neutron radiation is considered a fourth radiation hazard alongside the other types of radiation. Another, sometimes more severe hazard of neutron radiation, is neutron activation, the ability of neutron radiation to induce radioactivity in most substances it encounters, including the body tissues of the workers themselves. This occurs through the capture of neutrons by atomic nuclei, which are transformed to another nuclide, frequently a radionuclide. This process accounts for much of the radioactive material released by the detonation of a nuclear weapon. It is also a problem in nuclear fission and nuclear fusion installations, as it gradually renders the equipment radioactive; eventually the hardware must be replaced and disposed of as low-level radioactive waste.