Model simulations on the long-term dispersal of 137Cs released into the Pacific Ocean off Fukushima - IOPscience
http://youtu.be/3l8TT1dv-PM
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Showing posts with label Cs-137. Show all posts
Showing posts with label Cs-137. Show all posts
Cesium from Fukushima plant fell all over Japan - AJW by The Asahi Shimbun
Cesium from Fukushima plant fell all over Japan - AJW by The Asahi Shimbun: "Radioactive substances from the crippled Fukushima No. 1 nuclear power plant have now been confirmed in all prefectures, including Uruma, Okinawa Prefecture, about 1,700 kilometers from the plant, according to the science ministry."
Seoul to conduct radiation checks on all roads - AJW by The Asahi Shimbun
Seoul to conduct radiation checks on all roads - AJW by The Asahi Shimbun
Although the Seoul authorities are blaming asphalt; the cesium is more likely the result of Fukushima's spewing because South Korea is very close to Japan.
Although the Seoul authorities are blaming asphalt; the cesium is more likely the result of Fukushima's spewing because South Korea is very close to Japan.
NHK WORLD English
NHK WORLD English: "A radioactivity level higher than that of areas near the crippled Fukushima nuclear power plant has been detected at a Tokyo elementary school."
Radiation hotspot in Chiba linked to Fukushima: officials ‹ Japan Today: Japan News and Discussion
Radiation hotspot in Chiba linked to Fukushima: officials ‹ Japan Today: Japan News and Discussion: TOKYO —
"Radiation levels as high as those in the evacuation zone around the Fukushima Daiichi nuclear power plant have been detected in a Tokyo suburb, and are likely linked to the disaster, officials said Monday."
"Radiation levels as high as those in the evacuation zone around the Fukushima Daiichi nuclear power plant have been detected in a Tokyo suburb, and are likely linked to the disaster, officials said Monday."
While reading Wikipedia article on Fukushima
"On 23 March, it was reported that low level neutron radiation (reported as "neutron beam") was observed several times. The measured neutron radiation may have originated from leaked uranium or plutonium. [263]
On 23 March, it was reported that the cooling pump at reactor No 5 stopped working when it was transferred from backup power to the grid supply.[269][270]
This contains 6375 fuel assemblies and was reported 'secured' with a temperature of 55 °C. After further cooling, fuel can be transferred to dry cask storage, which has shown no signs of abnormalities.[271] On 21 March temperatures in the fuel pond had risen a little to 61 °C and water was sprayed over the pool.[2]
Asahi Shimbunreported that by 24 March the accident might have emitted 30,000 to 110,000 TBqof radioiodine.[272] On the INES scale, the accident would rate 6 rather than the official level 5, according to the newspaper.
On March 23, Tokyo drinking water exceeded the safe level for infants, prompting the government to distribute bottled water to families with infants.[277] World wide measurements of wind-born radioactive iodine and caesium vented from reactors suggest that levels have reached around 2/3 those during the Chernobyl disaster, though in that case other radioactive material was also released.[10]
On 23 March, it was reported that the cooling pump at reactor No 5 stopped working when it was transferred from backup power to the grid supply.[269][270]
This contains 6375 fuel assemblies and was reported 'secured' with a temperature of 55 °C. After further cooling, fuel can be transferred to dry cask storage, which has shown no signs of abnormalities.[271] On 21 March temperatures in the fuel pond had risen a little to 61 °C and water was sprayed over the pool.[2]
Asahi Shimbunreported that by 24 March the accident might have emitted 30,000 to 110,000 TBqof radioiodine.[272] On the INES scale, the accident would rate 6 rather than the official level 5, according to the newspaper.
On March 23, Tokyo drinking water exceeded the safe level for infants, prompting the government to distribute bottled water to families with infants.[277] World wide measurements of wind-born radioactive iodine and caesium vented from reactors suggest that levels have reached around 2/3 those during the Chernobyl disaster, though in that case other radioactive material was also released.[10]
The Wall Street Journal reported on 25 March that authorities were considering raising the event to level 6, a "serious accident," one level above the Three Mile Island accident, and second only to Chernobyl.[279] On the same day, Asahi Shimbun supported this upgrading, based on the amount of radioactive contamination.[272][280]
the Finnish nuclear safety authority—estimated the accidents at Fukushima to be at Level 6 on the INES.[283][284] On 24 March, a scientific consultant for Greenpeace, working with data from the Austrian ZAMG[285] and French IRSN, prepared an analysis in which he rated the total Fukushima I accident at INES level 7.[286]"
New Scientist reports that Fukushima releases are "nearing Chernobyl levels" - Wikipedia
On 25 March, Japan's nuclear regulator announced a likely breach and radiation leak in the containment vessel of the unit 3 reactor, the only one at the plant using MOX fuel.[7][8][9] World wide measurements of radioactive fallout released from the reactors were reported by New Scientist to be "nearing Chernobyl levels". It reported that the preparatory commission of theComprehensive Test Ban Treaty Organization had measured levels of iodine-131 at 73% and caesium-137 at 60% the levels released from the Chernobyl disaster.[10] Food grown in the area was banned. Tokyo officials declared its tap water unsafe for infants for a short time.[11][12] Plutonium has been detected in the soil around the plant in five locations [13] The soil samples were taken on 22 March 2011. [14]
Wikipedia has done a good job putting these pages together.
Wikipedia has done a good job putting these pages together.
Radiation has been detected n rain water in the US
"Massachusetts, Pennsylvania, Nevada and other Western states are among the states that have reported minuscule amounts of radiation.
Nuclear-plant operators Progress Energy Inc. and Duke Energy Corp. in North Carolina and South Carolina Electric & Gas Co. also said they have detected trace amounts of radiation.
Nuclear experts and health officials said there is no public-health risk. The U.S. Environmental Protection Agency said people are exposed to much more radiation on an international airline flight."
Except that radiation in a flight last for the time of the flight, Cs-137,Cs-134,Strontium-90 and Plutonium, uranium ...will remain around for a long time and keep releasing radiation.
IRSN latest up-dates on Fukushima
"Les réacteurs n°1, 2 et 3 restent dans un état particulièrement critique en l’absence de source de refroidissement pérenne. L’exploitant TEPCO procède maintenant à des injections d’eau douce dans les réacteurs n°1, 2 et 3 ; néanmoins, compte tenu de la présence massive de sel dans les
réacteurs, les risques d’altération du refroidissement du combustible demeurent. Les rejets atmosphériques et liquides se poursuivent. " I
I translate:
"Units 1,2 and 3 remain in a critical state since they don't have a constant source of water. TEPCO the plants owner is now injecting fresh water in the core vessels of 1,2 and 3; but because of the presence of a huge amount of salt there are problem keeping the reactors cool. Fukushima is still spewing radiation particles into the atmosphere and the Pacific Ocean.
See the whole report it is in French.
Fukushima accident March 26 -IAEA
Several teams are in Japan and some are on their way to further assess the situation; a food safety assessment team is on its way to provide advice and assistance on sampling and analysis.
Four reactors are still spewing radiation and are still in critical condition:
1,2,3 and 4 are still having serious problems:
Unit 1:
Light has been restored and thus have recovered some instrumentation. Fresh water is being pumped into the reactor pressure vessel (RPV) instead of sea water.
Unit 2: Seawater injection into RPV
Unit 3: Fresh water into the RPV, seawater pumped onto the spent fuel pool. Also, workers sprayed the outside of the building.
Unit 4: Concerns remain focused on the spent fuel, seawater being pumped.
RPV pumping of water suggest some damage to the cores and vessels.
Also, there has been sea water samples taken 30 km away and found high level of I-131 and Cs-137 and the radiation particles will travel with the currents and will undoubtably reach other shores.
Four reactors are still spewing radiation and are still in critical condition:
1,2,3 and 4 are still having serious problems:
Unit 1:
Light has been restored and thus have recovered some instrumentation. Fresh water is being pumped into the reactor pressure vessel (RPV) instead of sea water.
Unit 2: Seawater injection into RPV
Unit 3: Fresh water into the RPV, seawater pumped onto the spent fuel pool. Also, workers sprayed the outside of the building.
Unit 4: Concerns remain focused on the spent fuel, seawater being pumped.
RPV pumping of water suggest some damage to the cores and vessels.
Also, there has been sea water samples taken 30 km away and found high level of I-131 and Cs-137 and the radiation particles will travel with the currents and will undoubtably reach other shores.
Cs-137 = Chernobyl fallout map -University of Georgia
We can say that this could be providing us with a base line and what to expect in the South and in the Northern hemisphere as to the new deposits of Cs-137.
The Southern Hemisphere looks a lot more inviting.
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