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Latest Fukushima Daiichi Nuclear Status Report:

  

Latest Fukushima Daiichi Nuclear Status Report

Here is the latest Fukushima Daiichi Nuclear Status Report:

Fukushima Daiichi Nuclear Status Report

  1. Radiation Levels
    • At 7:00PM (JST) on March 25, radiation level at main gate (approximately 3,281 feet from Unit 2 reactor building) of Fukushima Daiichi Nuclear Power Station: 199.5 micro Sv/hour.
    • Measurement results of environmental radioactivity level around Fukushima Nuclear Power Station announced at 7:00PM on March 25 are shown in the attached PDF file. English version is available at: http://www.mext.go.jp/english/radioactivity_level/detail/1303962.htm.
    • For comparison, a human receives 2,400 micro Sv per year from natural radiation in the form of sunlight, radon, and other sources. One chest CT scan generates 6,900 micro Sv per scan.
  2. Fukushima Daiichi Unit 1 reactor
    • At 11:00AM on March 25, activities for the injection of freshwater in place of seawater into the reactor core started and at 3:37PM, the injection of freshwater into the reactor core started.
    • At 2:00PM on March 25, pressure inside the reactor core: 0.342MPa.
    • At 2:00PM on March 25, water level inside the reactor core: 1.65 meters below the top of the fuel rods.
    • At 2:00PM on March 25, pressure inside the primary containment vessel: 0.280MPaabs.
  3. Fukushima Daiichi Unit 2 reactor
    • At 10:00AM on March 25, the temperature of the spent fuel pool: 82.4 degrees Fahrenheit.
    • At 10:30AM on March25, TEPCO began to inject seawater into the spent fuel pool via cooling and purification line, until at 12:19PM (approximately 38 tons in total).
    • At 11:00AM on March 25, activities for the injection of freshwater in place of seawater into the reactor core started.
    • At 2:00PM on March 25, pressure inside the reactor core: -0.016MPa.
    • At 2:00PM on March 25, water level inside the reactor core: 1.4 meters below the top of the fuel rods.
    • At 2:00PM on March 25, pressure inside the primary containment vessel: 0.12MPaabs.
    • As of 7:00PM on March 25, approximately 96 tons of water in total has been injected into the spent fuel storage pool.
    • As of 7:00PM on March 25, external power generation is connected and the functionality of the electric devices is being checked.
    • As of 7:30PM on March 25, the injection of seawater into the reactor core continues.
  4. Fukushima Daiichi Unit 3 reactor
    • At 11:00AM on March 25, activities for the injection of freshwater in place of seawater into the reactor core started and at 6:02PM, the injection of freshwater into the reactor core started.
    • At 1:28PM on March 25, Kawasaki City Fire Department began to shoot water aimed at the spent fuel pool until 4:00PM (approximately 450 tons in total).
    • At 2:00PM on March 25, pressure inside the reactor core: 0.038MPa.
    • At 2:00PM on March 25, pressure inside the primary containment vessel: 0.1089MPaabs.
    • At 2:10PM on March 25, water level inside the reactor core: 1.9 meters below the top of the fuel rods.
    • As of 7:00PM on March 25, approximately 4,497 tons of water in total has been shot to the spent fuel storage pool.
  5. Fukushima Daiichi Unit 4 reactor
    • At 6:05AM on March25, TEPCO began to inject seawater into the spent fuel pool via cooling and purification line, until at 10:20APM.
    • At 7:05PM on March 25, TEPCO began to shoot water aimed at the spent fuel pool, with a specialized vehicle normally used for pumping concrete.
    • As of 7:00PM on March 25, approximately 685 tons of water in total has been shot to the spent fuel storage pool.
    • As of 7:00PM on March 25, external power generation is connected and the functionality of the electric devices is being checked.
  6. Fukushima Daiichi Unit 5 reactor
    • At 3:00PM on March 25, the temperature of the spent fuel pool: 98.4 degrees Fahrenheit.
    • At 3:00PM on March 25, the temperature of the water in the reactor core: 129.0 degrees Fahrenheit.
  7. Fukushima Daiichi Unit 6 reactor
    • At 3:00PM on March 25, the temperature of the spent fuel pool: 69.8 degrees Fahrenheit.
  8. Fukushima Daiichi Common Spent Fuel Pool
    • As of 7:00PM on March 25, approximately 130 tons of water in total has been injected to the spent fuel storage pool.


Download as PDF! | Full Read At Google Docs!

source: NHK.co.jp



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