SPECIAL FUKUSHIMA NUCLEAR UPDATE

If you love this planet,

PLEASE LISTEN TO THIS INTERVIEW:

The interview goes back to the beginning of the disaster but Keep Listening. You’ll hear recent info that is startling and credible. Arnold Gundersen, a former nuclear engineer, explains that Reactor 2’s fuel has probably partially eaten its way out of the reactor and molten fuel is likely eating its way through the concrete floor of the reactor building.

Dr. Helen Caldicott and  Arnold Gundersen

SPECIAL FUKUSHIMA UPDATE INTERVIEW

Related videos:

Fukushima Updates, (Arnold Gundersen) Includes some excellent video tours of the Fukushima site.

The Tokyo Electric Power Company (TEPCO) has reported that seawater containing radioactive iodine-131 at 5 million times the legal limit has been detected near the plant. According to the Japanese news service, NHK, a recent sample also contained 1.1 million times the legal level of radioactive cesium-137. (e360.yale.edu)

Nuclear Power Plant Updates (guardian.co.uk)

Fukushima Nuclear Power Plant Data  for Thursday, April 7, 2011

Download this data

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Reactor 1 2 3 4 5 6

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Electric / Thermal Power output (MW) 460 / 1380 784 / 2381 784 / 2381 784 / 2381 784 / 2381 1100 / 3293

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Type of Reactor BWR-3 BWR-4 BWR-4 BWR-4 BWR-4 BWR-5

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Operation Status at the earthquake occurred In Service -> Shutdown In Service -> Shutdown In Service -> Shutdown Outage Outage Outage

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Core and Fuel Integrity Damaged (400) 70% Damaged (548) 30% Damaged (548) 25% No fuel rods Not Damaged (548) Not Damaged (764)

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Reactor Pressure Vessel Integrity Unknown Unknown Unknown Not Damaged Not Damaged Not Damaged

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Containment Vessel Integrity Not Damaged (estimation) Damage and leakage Suspected Not Damaged (estimation) Not Damaged Not Damaged Not Damaged

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Core cooling requiring AC power 1 (Large volume injection of plain water) Not Functional Not Functional Not Functional Not neccessary Functional Functional

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Core cooling not requiring AC power 2 (Cooling through Heat Exchangers) Not Functional Not Functional Not Functional Not neccessary Functioning (in cold shutdown) Functioning (in cold shutdown)

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Building Integrity Severely Damaged (Hydrogen Explosion) Slightly Damaged Severely Damaged (Hydrogen Explosion) Severely Damaged (Hydrogen Explosion) Open a vent hole on the rooftop for avoiding hydrogen explosion Open a vent hole on the rooftop for avoiding hydrogen explosion

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Water Level of the Rector Pressure Vessel Fuel exposed Fuel exposed Fuel exposed Safe Safe Safe

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Pressure of the Reactor Pressure Vessel Gradually increasing/ Decreased a little after increasing over 400C on 24th Unknown / Stable Unknown Safe Safe Safe

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Containment Vessel Pressure Decreased a little after increasing up to 0.4Mpa on 24th Stable Stable Safe Safe Safe

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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 Not neccessary Not neccessary

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Water injection to Containment Vessel (AM) TBC TBD (Seawater) TBC Not neccessary Not neccessary Not neccessary

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Containment venting (AM) Temporally stopped Temporally stopped Temporally stopped Not neccessary Not neccessary Not neccessary

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Fuel Integrity in the spent fuel pool (Stored spent fuel assemblies) Unknown (292) Unknown (587) Damage suspected (514) Possibly Damaged (1331) Not Damaged (946) Not Damaged (876)

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Cooling of the spent fuel pool Water spray started (freshwater) Continued water injection (Switch
from seawater to Freshwater)
Continued water spray and injection
(Switch from seawater to Freshwater)
Continued water spray and injection
(Switch from seawater to Freshwater) Hydrogen from the pool exploded on Mar. 15th
Pool cooling capability was recovered. Pool cooling capability was recovered.

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Main Control Room Habitability & Operability Poor due to loss of AC power (Lighting working in the control room at unit-1 and 2) Poor due to loss of AC power (Lighting working in the control room at unit-1 and 2) Poor due to loss of AC power (Lighting working in the control room at unit-3 and 4) Poor due to loss of AC power (Lighting working in the control room at unit-3 and 4) Not damaged (estimate) Not damaged (estimate)

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INES LEVEL (est by NISA) 5 5 5 3

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Radiation level Status in Fukushima Dai-ichi NPS site
Radiation level: 0.70mSv/h at the south side of the office building, 46μSv/h at the West gate, as of 09:00, Apr. 7th, 108μSv/h at the Main gate, as of 10:00, Apr. 6th.
Radiation dose higher than 1000 mSv was measured at the surface of water accumulated on the basement of Unit 2 turbine building and in the tunnel for laying piping outside the building on Mar. 27th.
Plutonium was detected from the soil sampled at Fukushima Dai-ichi NPS site on Mar. 21st, 22nd, 25th and 28th. The amount is so small that the Pu is not harmful to human body.
Radioactive materials exceeding the regulatory limit have been detected from seawater sample collected in the sea surrounding the Fukushima Dai-ichi NPS since Mar. 21st. On Apr. 5th, 7.5 million times the legal limit of
radioactive iodine, I-131, was detected from the seawater, which had been sampled near the water intake of Unit 2 on Apr. 2nd. It was found on Apr. 2nd that there was highly radioactive (more than 1000mSv/hr) water in the
concrete pit housing electrical cables and this water was leaking into the sea through cracks on the concrete wall. It was confirmed on Apr. 6th that the leakage of water stopped after injecting a hardening agent into holes
drilled around the pit. Release of some 10,000 tons of low level radioactive wastewater into the sea began on Apr. 4th, in order to make room for the highly radioactive water mentioned above. Regarding the influence of the
low level radioactive waste release, TEPCO evaluated that eating fish and seaweed caught near the plant every day for a year would add some 25% of the dose that the general pubic receive from the environment for a year.
Monitoring for the surrounding sea area has been enhanced since Apr. 4th.
Radioactive materials were detected from underground water sampled near the turbine buildings on Mar. 30th.
●Influence to the people’s life
Radioactive material was detected from milk and agricultural products from Fukushima and neighboring prefectures. The government issued order to limit shipment (21st-) and intake (23rd-) for some products.
Radioactive iodine, exceeding the provisional legal limit, was detected from tap water sampled in some prefectures from Mar. 21st to 27th.
Small fish caught in waters off the coast of Ibaraki on Apr. 4 have been found to contain radioactive cesium above the legal limit on Apr. 5th. It was decided on Apr. 5th that as a legal limit of radioactive iodine, the same
amount for vegetbles should be applied to fishery products for the time being.

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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

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Remarks ●Progress of the work to recover injection function
Water injection to the reactor pressure vessel by temporally installed pumps were switched from seawater to freshwater at Unit 1, 2 and 3.
High radiation circumstance hampering the work to restore originally installed pumps for injection. Discharging radioactive water in the basement of the buildings of Unit 1through 3 continue to improve this situation. Water
transfer work is being made to secure a place the water to go. Lighting in the turbine buildings became partly available at Unit 1through 4.
●Function of containing radioactive material
It is presumed that radioactive material inside the reactor vessel may leaked outside at Unit 1, 2 and Unit 3, based on radioactive material found outside. NISA announced that the reactor pressure vessel of Unit 2 and 3 may
have lost air tightness because of low pressure inside the pressure vessel. NISA told that it is unlikely that these are cracks or holes in the reactor pressure vessels at the same occasion.
TEPCO started to inject nitrogen gas into the Unit 1containment vessel to reduce the possibility of hydrogen explosion on Apr. 6th. The same measure will be taken for Unit 2 and 3.
●Cooling the spent fuel pool
Steam like substance rose intermittently from the reactor building at Unit 1, 2, 3 and 4 has been observed. Injecting and/or spraying water to the spent fuel pool has been conducted.
●Prevention of the proliferation of contaminated dust: Testing the spraying synthetic resin to contain contaminated dust began on Apr. 1st.
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