FUKUSHIMA NUCLEAR UPDATES
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1234
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Electric / Thermal Power output (MW)460 / 1380784 / 2381784 / 2381784 / 2381
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Type of ReactorBWR-3BWR-4BWR-4BWR-4
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Operation Status at the earthquake occurred In Service -> ShutdownIn Service -> ShutdownIn Service -> ShutdownOutage
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Core and Fuel IntegrityDamaged (400) Core MeltDamaged (548) Core MeltDamaged (548) Core MeltNo fuel rods
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PCV structural integrity Limited damage and leakageUnknownUnknownNot Damaged
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RPV structural integrityDamage and leakage SuspectedDamage and leakage SuspectedDamage and leakage SuspectedNot Damaged
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Core cooling Not FunctionalNot FunctionalNot FunctionalNot neccessary
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Building IntegritySeverely Damaged Partly OpenedSeverely Damaged Severely Damaged
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Water injection to core (Accident Management)Continuing (Switch from seawater to Freshwater)Continuing (Switch from seawater to Freshwater)Continuing (Switch from seawater to Freshwater)Not neccessary
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Circulation cooling with HXPlanned In OperationPlannedPlanned
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Fuel Integrity in the spent fuel pool UnknownUnknownUnknownUnknown
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SFP CoolingNot FunctionalNot FunctionalNot FunctionalNot Functional
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INES LEVEL (est by NISA)Level 7* ※Cumulative amount of radioactivity from Fukushima Diichi NPS has reached the level to be classified as level 7.
Total amount of radioactive material released to the environment in this accident is one tenth as much as one in the Chernobyl accident so far.
773
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Environmental effect in the vicinity of the station-Air dose rate: 5~121μSv/h at the NPS border (Monitoring Post), 366μSv/h at the south side of the office building, 14μSv/h at
the wet gate [6/7 09:00]
-Some radioactive materials (I, Cs, Pu, Am Cm and Sr) has been detected in the soil sampled at the site.
Radioactive materials have been detected in samples corrected from underground water and also seawater at or near the site.
Environmental monitoring has been enhanced [4/16-]。
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Evacuation<1> Shall be evacuated for within 3km from NPS, Shall stay indoors for within 10km from NPS (issued at 21:23, Mar. 11th) <2> Shall be evacuated for within 10km from NPS (issued at 05:44, Mar. 12th)
<3> Shall be evacuated for within 20km from NPS (issued at 18:25, Mar. 12th) <4> Shall stay indoors (issued at 11:00, Mar. 15th), Should consider leaving (issued at 11:30, Mar. 25th) for from 20km to 30km from NPS <5>The 20km evacuation zone
around the Fukushima Daiichi NPS is to be expanded so as to include the area, where annual radiation exposure is expected to be above 20mSv. People in the expanded zone are ordered to evacuate within a month or so. People living in the 20 to
30km and other than the expanded evacuation area mentioned above, are asked to get prepared for staying indoors or evacuation in an emergency (announced on Apr. 11th and issued on Apr. 22nd).
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Radiation exposure of the workers30 workers has been exposed to radiation more than 100 mSv as of 5/30. It was found that two plant operators had taken in high level
of radioactive iodine into the body. Evaluation made by a research institute shows that their exposure dose is somewhere between
200mSv and 580mSv. [announced by TEPCO on 6/3] *Emergency exposure dose limit has been set to 250mSv
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FUKUSHIMA DAIICHI, 7 JUNE
FUKUSHIMA DAIICHI, 6 JUNE
FUKUSHIMA DAIICHI, 5 JUNE
FUKUSHIMA DAIICHI, 4 JUNE
FUKUSHIMA DAIICHI, 3 JUNE
FUKUSHIMA DAIICHI, 2 JUNE
FUKUSHIMA DAIICHI, 1 JUNE
FUKUSHIMA DAIICHI, 31 MAY
FUKUSHIMA DAIICHI, 30 MAY
FUKUSHIMA DAIICHI, 29 MAY
FUKUSHIMA DAIICHI, 28 MAY
FUKUSHIMA DAIICHI, 27 MAY
FUKUSHIMA DAIICHI, 26 MAY
FUKUSHIMA DAIICHI, 25 MAY
FUKUSHIMA DAIICHI, 24 MAY
FUKUSHIMA DAIICHI, 23 MAY
FUKUSHIMA DAIICHI, 22 MAY
FUKUSHIMA DAIICHI, 21 MAY
FUKUSHIMA DAIICHI, 20 MAY
FUKUSHIMA DAIICHI, 19 MAY
FUKUSHIMA DAIICHI, 18 MAY
FUKUSHIMA DAIICHI, 17 MAY
FUKUSHIMA DAIICHI, 16 MAY
FUKUSHIMA DAIICHI, 15 MAY
FUKUSHIMA DAIICHI, 14 MAY
FUKUSHIMA DAIICHI, 13 MAY
FUKUSHIMA DAIICHI, 12 MAY
FUKUSHIMA DAIICHI, 11 MAY
FUKUSHIMA DAIICHI, 10 MAY
FUKUSHIMA DAIICHI, 9 MAY
FUKUSHIMA DAIICHI, 8 MAY
FUKUSHIMA DAIICHI, 7 MAY
FUKUSHIMA DAIICHI, 6 MAY
FUKUSHIMA DAIICHI, 5 MAY
FUKUSHIMA DAIICHI, 4 MAY
FUKUSHIMA DAIICHI, 3 MAY
FUKUSHIMA DAIICHI, 2 MAY
FUKUSHIMA DAIICHI, 1 MAY
FUKUSHIMA DAIICHI, 29 APRIL
FUKUSHIMA DAIICHI, 28 APRIL
FUKUSHIMA DAIICHI, 27 APRIL
FUKUSHIMA DAIICHI, 26 APRIL
FUKUSHIMA DAIICHI, 25 APRIL
FUKUSHIMA DAIICHI, 24 APRIL
FUKUSHIMA DAIICHI, 23 APRIL
FUKUSHIMA DAIICHI, 22 APRIL
FUKUSHIMA DAIICHI, 21 APRIL
FUKUSHIMA DAIICHI, 20 APRIL
FUKUSHIMA DAIICHI, 19 APRIL
FUKUSHIMA DAIICHI, 18 APRIL
FUKUSHIMA DAIICHI, 17 APRIL
FUKUSHIMA DAIICHI, 16 APRIL
FUKUSHIMA DAIICHI, 15 APRIL
DATA SUMMARY UP TO 15/04
FUKUSHIMA DAIICHI, 14 APRIL
FUKUSHIMA DAIICHI, 13 APRIL
FUKUSHIMA DAIICHI, 12 APRIL
FUKUSHIMA DAIICHI, 11 APRIL
FUKUSHIMA DAIICHI, 10 APRIL
FUKUSHIMA DAIICHI, 9 APRIL
FUKUSHIMA DAIICHI, 8 APRIL
FUKUSHIMA DAIICHI, 7 APRIL
FUKUSHIMA DAIICHI, 6 APRIL
FUKUSHIMA DAIICHI, 5 APRIL
FUKUSHIMA DAIICHI, 4 APRIL
FUKUSHIMA DAIICHI, 3 APRIL
FUKUSHIMA DAIICHI, 2 APRIL
FUKUSHIMA DAIICHI, 1 APRIL
FUKUSHIMA DAIICHI, 31 MARCH
FUKUSHIMA DAIICHI, 30 MARCH
FUKUSHIMA DAIICHI, 29 MARCH
FUKUSHIMA DAIICHI, 28 MARCH
FUKUSHIMA DAIICHI, 27 MARCH
FUKUSHIMA DAIICHI, 26 MARCH
FUKUSHIMA DAIICHI, 25 MARCH
FUKUSHIMA DAIICHI, 24 MARCH
FUKUSHIMA DAIICHI, 23 MARCH
FUKUSHIMA DAIICHI, 22 MARCH PM
FUKUSHIMA DAIICHI, 21 MARCH PM
FUKUSHIMA DAIICHI, 21 MARCH AM
FUKUSHIMA DAIICHI, 20 MARCH
FUKUSHIMA DAIICHI, 19 MARCH
FUKUSHIMA DAIICHI, 18 MARCH
DAIICHI MAJOR INCIDENTS
FUKUSHIMA DAINI
ONAGAWA
TOKAI DAINI
SOURCE