Hydrogen was generated from spent nuclear fuel at Fukushima Daiichi nuclear power plant 4, a fire occurred, 400 mSv was observed at the nearest point

At 11 o'clock, Prime Minister Kan and Minister Chief Cabinet Secretariat Edano had a press conference at the prime minister 's official residence.

Among them, Prime Minister Kan told me that "people who live in the 20 km to 30 km of Fukushima Daiichi nuclear power also want to indoors evacuate." In addition, Chief Cabinet Secretariat Edano declared a fire at Fukushima Daiichi nuclear power plant 4 Has occurred, radioactive substances are emitted to the atmosphere due to the damage of the building, and it was revealed that 400 millisieverts were observed most recently.

Details are as below.
2011/03/15 11: 01
A message from the Prime Minister Kan to the citizens was announced at 11 o'clock. The summary is as follows.

In the Fukushima Daiichi nuclear power plant emergency diesel was stopped by the earthquake and tsunami, hydrogen explosion of Units 1 and 3 and hydrogen occurred in Unit 4, fire occurred, radioactive concentrations (interview moms) leaking to the surroundings became high There. The risk of further radioactive substances is increasing.

Again, from the 20 km range from Fukushima Daiichi Nuclear Power Plant, most of the people have been evacuated, but it is necessary for all of us to evacuate. Also, everyone in the range of 20 km or more and 30 km in the future considering the situation of the reactor, we would like you to escape indoors without going out. Regarding the Fukushima Daiichi Nuclear Power Plant, evacuation within 10 km has already been completed, but we would like everyone to evacuate.

Currently we are doing our utmost to prevent further explosion and radioactive material leakage. TEPCO and others concerned are still working on water injection into the reactor without paying attention to danger. We will do our utmost to prevent further leakage expansion, so we sincerely ask all the people to act calmly.

20 ~ 30 km area Indoor refueling instruction NHK News

2011/03/15 11:17
The summary of the interview with Chief Cabinet Secretariat Edano is as follows.

There is a fire in Unit 4. Unit 4 is a nuclear reactor that was out of service at the time of the earthquake disaster, but there is no fuel in the furnace itself, but spent nuclear fuel is in No. 4 furnace and hydrogen is generated with heat. Nuclear fuels themselves will not be a fire. In Units 1 and 3, the building exploded, but in Unit 4 it collapsed inward and burning. Perhaps I thought that the radioactive material was discharged from that point (point of fire occurrence), but now it is out of the situation that the building (Unit 4) is covered with the building and is on standby.

The numerical value is 30 mSv to 400 mSv, which is different from the conventional unit. There is no doubt that it is a numerical value that affects the body. However, this is a measured value in the vicinity of the opening, and its value decreases as the distance increases.

(30 mSv belt between Units 2 to 3, 400 mSv in the vicinity of Unit 3 and 100 mSv in the vicinity of Unit 4)

Asahi.com (Asahi Shimbun): Even in Fukushima Daiichi nuclear power plant Unit 4 near the roof of a fire building - Society

A large noise occurred around 6:00 on Friday at the Fukushima Daiichi nuclear power plant Unit 4, which was stopped due to regular inspections, and TEPCO confirmed the damage near the 5th floor of the reactor building. After that, we confirmed the situation of the site of Unit 4, and it was confirmed at around 9:38 that the fire was near the northwestern part of the reactor building 4th floor.

2011/03/15 11: 20
Press Release 2011 | TEPCO News | TEPCO

Confirmation of Damage to Reactor Building of Unit 4 of Fukushima Dai-ichi NPS

A big noise occurred in the power plant around 6 am today. After that, we confirmed the damage near the roof of Unit 4 reactor building 5th floor.
All the fuel is stored in the spent fuel pool.
The status of the plant, the influence of radioactivity to the outside, etc. are currently under investigation.
We will do our utmost to secure safety in cooperation with related organizations in the future, and will continue to monitor peripheral environmental monitoring continuously.

2011/03/15 11: 26
Municipalities within 20 km - 30 km area announced by Chief Cabinet Secretariat Edano are as follows. Some municipalities do not have the whole area, some of which are included.

Tamura City, Minamisoma City, Hirono Town, Narahaba Town, Tomioka Town, Kawauchi Village, Okuma Town, Futaba Town, Namie Town, Katsurao Village, Iidate Village, Iwaki City

2011/03/15 11: 45
The full text of Kan 's Prime Minister' s press conference is as follows.

【Radioactivity Leakage】 Prime Minister's Interview "Risk of Leakage of Radioactive Substances" (around 11 o'clock on 15th) + (1 / 2page) - MSN Sankei News

2011/03/15 12: 12
High radiation dose is also observed in Tochigi prefecture and Kanagawa prefecture.

【Radioactivity Leakage】 Observing "30 times or more" radiation dose in Tochigi Prefecture - MSN Sankei News

Tochigi prefecture announced on the 15th that the radiation dose measured by the radiation measurement device (monitoring post) at the prefectural health care center in Shimokamoto-machi, Utsunomiya shima rises from the morning and reaches 30 times or more than usual . It seems that the accident at TEPCO's Fukushima Daiichi Nuclear Power Plant is affected.

【Radioactivity Leakage】 Detect up to 9 times radiation dose in Kanagawa - MSN Sankei News

Kanagawa Prefecture announced on January 15 that the radiation dose of both the Yokosuka and Kawasaki cities reached about 6 times that of the usual about 9 times, respectively. It is unclear whether the impact of the Fukushima Daiichi nuclear accident is unknown, but as of 9:00 am, the figure has decreased.

2011/03/15 12: 15
Asahi.com (Asahi Shimbun): Unit 4 of Fukushima Daiichi nuclear power plant Unit 4 Fire, fire or extinguishing work US military - Society

Announced that the US military is engaged in the fire fighting work of Unit 4 of Fukushima Daiichi Nuclear Power Plant in which a fire has occurred. It is expected to have extinguished it.

2011/03/15 12: 42
【Radioactivity Leakage】 Worst case "We do not know" We are strained by the Ministry of Defense and the SDF - MSN Sankei News

Executives of the Ground Self Defense Force said, "We do not have any know-how, there is nothing we can do any more to cope with nuclear accidents," in response to the worst case situation such as meltdown (core melting) where the majority of the fuel melts It was.

2011/03/15 12: 52
【Radioactivity Leakage】 Kita Ibaraki city which is usually 100 times "It does not affect health, worried about harmful rumors" - MSN Sankei News

Nuclear reactor expert nine additional person dispatched NHK News

In addition to two nuclear reactor experts already dispatched, we decided a policy to dispatch nine new experts.

2011/03/15 13: 26
【Radioactivity Leakage】 20 times observation in Tokyo Saitama is 40 times - MSN Sankei news

Governor Shintaro Ishihara said, "I received a report that there is a significant change in the data this morning, but I do not have immediate health problems."

2011/03/15 15:13
【Radioactivity Leakage】 Detected numerical value "Very high, but government direction is reasonable, avoiding panic" Expert - MSN Sankei News

Professor Hoshi said, "If radiation is absorbed in a minute, radiation dose will be 1 / 60th, so if there is a moment there will not be such health hazards, and radiation will decrease if distance goes away." Regarding the instructions of the government, "The experts measure the distance and give directions and if the current figures are correct, the danger is low, please be careful about the information and want to follow the instructions without panic" .