Japan - Onagawa Nuclear Power Plant - 1st Stage Emergency Declared

[sharon sanders]

machine translation -

Onagawa nuclear power plant site boundary radiation, high
14 hours 58 minutes 3 twitter tweet on May 13 (NHK-click and leave the site)

According to METI's Nuclear and Industrial Safety Agency, located in Miyagi Prefecture in the Tohoku Electric Power 女川原子力発電所, measuring device called a monitoring post near the site boundary, Maikuroshi 21 to 50 minutes per hour at 13 noon measured the amount of radiation higher than normal belt. The value of this radiation level, can affect human health is not immediate.

The Nuclear Disaster Special Measures Law and the detection of radiation per hour at 5 microsievert nuclear power plant site boundary "unusual situation" and the Electric Power obliged to inform the report to a beyond the standard 1:00 pm 9:00 minutes "unusual circumstances" made a report to inform the nation. The value of this radiation, although higher than normal levels can affect human health is not immediate. According to Tohoku Electric Power, the amount of radiation monitoring post at the boundary of the site is now 1 pm Onagawa nuclear plant is that it has remained at around 5 microsievert microsievert more than 10 criteria. NISA about this, "possibly related to radioactive materials released during the explosion at the No. 1 Fukushima Daiichi Nuclear Power Station," he said, searching for any relationship. According to Tohoku Electric Power, on the grounds of the 女川原子力発電所 office is that people are still displaced about 200 residents near damaged by earthquakes and tsunamis. According to Tohoku Electric Power, a number of monitoring posts inside the office and facilities that residents have been evacuated so far is that the abnormality has not been confirmed.女 川原子力発電所 near the boundary of the site, about the amount of radiation was measured higher than normal, Tokyo University professor specializing in nuclear Sekimura Naoto is "the distance between the primary and the first nuclear power plant in Fukushima Onagawa In more than 100 km, may well be considered by the wind carried radioactive material came from Fukushima Daiichi nuclear power plant. The amount of radiation is not a level that affect health, I want to calmly support "I said.

http://www3.nhk.or.jp/news/html/20110313/t10014642771000.html

 

[CopitoSP]

Re: Japan - "Meltdown" and release of radioactive material at Fukushima Daiichi Nuclear Power Station Unit 1 (LEVEL 4 EVENT) - now Unit 3 possible "Meltdown"

Re: Japan - "Meltdown" and release of radioactive material at Fukushima Daiichi Nuclear Power Station Unit 1 (LEVEL 4 EVENT) - now Unit 3 possible "Meltdown"

IAEA update on Japan Earthquake

(...)

Japanese authorities have also informed the IAEA that the first (i.e., lowest) state of emergency at the Onagawa nuclear power plant has been reported by Tohoku Electric Power Company. The authorities have informed the IAEA that the three reactor units at the Onagawa nuclear power plant are under control.


As defined in Article 10 of Japan's Act on Special Measures Concerning Nuclear Emergency Preparedness, the alert was declared as a consequence of radioactivity readings exceeding allowed levels in the area surrounding the plant. Japanese authorities are investigating the source of radiation. The IAEA has offered its "Good Offices" to Japan to support the nation's response to the 11 March earthquake and tsunami. One IAEA capability intended to help member states during crises is the Response and Assistance Network (RANET). The network consists of nations that can offer specialized assistance after a radiation incident or emergency. Such assistance is coordinated by the IAEA within the framework of the Assistance Convention.

(...)


http://www.iaea.org/newscenter/news/tsunamiupdate01.html

 

[Ronan Kelly]

Re: Japan - 1st Stage Emergency Declared - Radiation Detected at boundary at Onagawa Nuclear Power Plant

Re: Japan - 1st Stage Emergency Declared - Radiation Detected at boundary at Onagawa Nuclear Power Plant

March 13, 2011
Nuclear and Industrial Safety Agency
Seismic Damage Information(the 20th Release)
(As of 16:30 March 13, 2011)

...

a. Onagawa Nuclear Power Station (Onagawa?cho and Ishinomaki?shi,
Miyagi Prefecture)
(1) The status of operation
Unit 1 (524MWe): automatic shutdown, cold shut down at 0:58, March 12
Unit 2 (825MWe): automatic shutdown
Unit 3 (825MWe): automatic shutdown, cold shut down at 1:17, March 12
(2) Readings of monitoring post
Reading of monitoring post : Changed
-> Around MP2, Approx. 10,000 nGy/h (as of 13:09 March13)
(3) Report concerning other malfunction
It is confirmed Smoke in the first basement of the Turbine Building was
confirmed the extinguished at 22:55 on March 11th.
Article 10* of Act on Special Measures Concerning Nuclear Emergency
Preparedness (Unit No. not identified)
(*A heightened alert condition)
...

http://www.nisa.meti.go.jp/english/files/en20110313-4.pdf

 

[Ronan Kelly]

Re: Japan - 1st Stage Emergency Declared - Radiation Detected at boundary at Onagawa Nuclear Power Plant

Re: Japan - 1st Stage Emergency Declared - Radiation Detected at boundary at Onagawa Nuclear Power Plant

UPDATE 1-Japan says Onagawa radioactive level now normal-IAEA

Sun Mar 13, 2011 5:49pm EDT

VIENNA, March 13 (Reuters) - Japanese authorities have told the U.N. nuclear watchdog that radioactivity levels "at the site boundary" of the Onagawa nuclear power plant have returned to normal, the Vienna-based agency said on Sunday.

The International Atomic Energy Agency (IAEA) earlier on Sunday said that the first, or lowest, state of emergency had been reported by the operator at Onagawa after radioactivity readings exceeding allowed levels in the area.
...

http://www.reuters.com/article/2011/03/13/japan-quake-iaea-idUSLDE72C0OK20110313

The report goes on to suggest that the increase detected was due to a release from Fukushima Dai-ichi.