Radioactive cesium of 500 becquerels per kg found in pre-harvested rice sample near Fukushima Daiichi NPP
Contaminated rice sample found in Nihonmatsu city, Fukushima Prefecture, about 60 km west of the Fukushima Daiichi nuclear power plant: Report
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Disaster Calendar 2011 – September 24
[September 24, 2011] Mass die-offs resulting from human impact and the planetary response to the anthropogenic assault could occur by early 2016. SYMBOLIC COUNTDOWN: 1,635 Days Left to the ‘Worst Day’ in Human History
- Japan. The country’s farm ministry has found radioactive cesium of 500 becquerels per kg in pre-harvested rice sample near Fukushima Daiichi NPP. The sample was found in Nihonmatsu city, Fukushima Prefecture, about 60 km west of the Fukushima Daiichi nuclear power plant, a report said.
- Fukushima Daiichi NPP was crippled by the March 11 earthquake and tsunami, which led to the world’s worst nuclear disaster since Chernobyl, 25 years ago.
- Japan’s nuclear industry poses an existential threat to its own population and many people in Asia and elsewhere. See Global Tectonics Alert – April 9
- Contaminated Soil. Soil samples taken at four locations in Fukushima City on June 26 were found to contain radioactive cesium of up to 46,000 becquerels per kilogram, or nearly 5.6 times the legal limit of 10,000 becquerels per kg. In one area of the city contamination levels exceeded 931,000 becquerels per square meters.
Half-life of some radioactive elements
[NOTE: Half-life is the time taken for a radioactive substance to decay by half.]
- Cesium-134 ~ 2 years
- Cesium-137 ~ 30 years
- Iodine-131 ~ 8 days
- Plutonium-239 ~ 24,200 years
- Ruthenium-103 ~ 39 days [Ruthenium is a fission product of uranium-235.]
- Ruthenium-106 ~ 374 days
- Strontium-90 ~ 28.85 years [Strontium-90 is a product of nuclear fission and is found in large amounts in spent nuclear fuel and in radioactive waste from nuclear reactors.]
- Uranium-234 ~ 246,000 years
- Uranium-235 ~ 703.8 million years
- Uranium-238 ~ 4.468 billion years
What is a lethal dose of radiation from a single Exposure?
Studies of the 1945 atomic bombing at Hiroshima and Nagasaki show that 100 percent of victims whose bodies were exposed to 600,000 millirems (6,000 mSv) died from radiation. About 50 percent of victims who received 450,000 millirems (4,500 mSv) of radiation also died.
(Note: Rem is a unit of ionizing radiation equal to the amount that produces the same damage to humans as one roentgen of high-voltage x-rays. Source: MIT)
1 rem = 10 mSv (1 Sv = 100 rem)
Background Radiation in millirems per year (mrem/yr)
- Average background radiation (US): 300
- Higher altitudes (eg. Denver): 400
“Safe Levels” of Radiation (U.S.)
Limits above natural background radiation levels (average 300 millirems per year) and medical radiation:
- Occupation Limit: Maximum of 5,000 (the limit for a worker using radiation)
- Average Natural Background: 300
[Note: Lifetime cumulative exposure should be limited to a person's age multiplied by 1,000 millirems, e.g., a 70-year-old person, 70,000 millirems.]
- Max single dose for an adult: 3,000
- Annual total dose: 5,000
- Max single dose for a person aged under 18 years: 300 millirems (whole body equivalent)
- Annual total exposure: 500
- Maximum limit for fetal exposure during gestation period: 50 millirems per month above background levels
- Single Chest X-ray (the whole body equivalent): 2 millirem
- Coast-to-coast US round trip flight: 12 millirems
The following probability figures are calculated by FIRE-EARTH on April 8, 2011
- Japan (880)³
- United States (865)
- France (855)
- Taiwan (850)
- Belgium, China, Finland, India, South Korea, United Kingdom, Ukraine, Russia, Slovakia, Czech Republic, Armenia, Slovenia, Croatia, Romania, Hungary, Bulgaria, Spain, Pakistan, Argentina, Brazil, Mexico, South Africa, Canada (810)
- Germany, Sweden, Netherlands (800)
- Switzerland (750)
- The list represents a snapshot of events at the time of calculating the probabilities. Any forecast posted here is subject to numerous variable factors.
- Figures in the bracket represent the probability of an incident occurring out of 1,000; the forecast duration is valid for the next 50 months.
- Probability includes a significant worsening of Fukushima nuclear disaster, and future quakes forecast for Japan.
- A nuclear incident is defined as a level 5 (Accident With Wider Consequences), or worse, on the International Nuclear and Radiological Event Scale (INES). See below.
- Safety issues considered in compiling these lists include the age, number of units and capacity of nuclear reactors in each country/state, previous incidents, probability of damage from human-enhanced natural disasters, e.g., earthquakes, tsunamis, volcanic activity, hurricanes, tornadoes, storms, wildfires, flooding… ]
- The Blog’s knowledge concerning the extent to which the factors described in (3) might worsen during the forecast period greatly influences the forecast. (Last UPDATED: June 26, 2011)
- About Half the Kids In Fukushima Have Thyroid Radiation Exposure
- 2011 Disaster Calendar – July
- Disaster Calendar – June 2011
- Japan Earthquakes, Disasters: Recent History and FIRE-EARTH Forecasts
- Mega Heatwaves Could Kill Tens of Thousands in the U.S. (FIRE-EARTH Forecast)
- U.S. Disaster Losses Mounting
- 2011 Much More Disastrous: FIRE-EARTH Forecast
- Global Disasters in 2011 Could Impact 1/3 to 1/2 of the Human Population
- Back to the Primordial Future
- Mass Die-offs (FIRE-EARTH Forecast)