Response Mode As of 0946 on 3/11/11
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6 4L4 5 PC?31e-SD Group -El (Records Withheld In Part) NG'~F~R- uJJ'iC _LOSUR 0 a Use Only Methodology for Developing the Fukushima Daiichi Daily Assessment Report PURPOSE: The report is prepared to provide a qualitative high level assessment of daily conditions at Fukushima Daiichi that the U.S. Ambassador can use to assess the safety of American citizens in Japan. DISCLAIMER: The development of the daily assessment report includes a number of Inputs. Some of these are objective, such as plant data provided by TEPCO, while others are subjective, such as engineering insights from the NRC's reactor and protective measures specialists In Japan. It should be recognized that there are many unknowns and uncertainties associated with having a complete understanding of conditions in each of the Dalichi reactors and spent fuel pools. As such, this tool represents the collective judgment of the NRC staff in Japan based on all available data. For each of the major plant parameters listed below, the NRC staff assesses its status daily and bins it into one of the three categories listed. The staff uses the listed plant information and conditions in making its assessment. The arrows on the report indicate the relative trend in plant conditions from the previous day. 1. Reactor Pressure Vessel 3. Spent Fuel Pools a. Coolmng-Adequate, Challenged, or a. Cooling/Level -Adequate, Inadequate. Challenged, or Inadequate. i. Flow or Injection Rate i. Flow or Injection Rate ii. Reliability of Injection ii. Reliability of Injection iii, Source of Water iii. Source of Water b. Integrity- Intact, Challenged, or b. Integrity- Intact, Challenged, or Failed. Failed. Due to limited available Temperature indications data, this assessment relies strongly ii. Pressure readings on the NRC team's engineering 2. Primary Containment judgment. a. Flooding Status - Complete/Not 4. Protective Measures - Exposure Risk to needed, Challenged, or American citizens in Japan outside the US. Incomplete/Needed. government's recommended 50-mile i. Water Level evacuation zone. ii. Sources a. Low - 50-mile recommendation lii. Injection capacity/rate remains sufficient b. Integrity - Intact, Challenged, or b. Medium - New information has Failed. raised questions regarding the I, Pressure readings sufficiency of the 50-mile ii. Bypass evaluations recommendation. lii. Temperature indications c. High - 50-mile recommendation is no longer sufficient due to changing plant condition O C e NC~iH' 'J L[-UR 3 Eli of 445 From: HOO Hoc Sent: Friday, March 11, 2011 10:09 AM To: HOO Hoc Subject: HOO HIGHLIGHT - NRC IN MONITORING MODE AT 0946 Attachments: imageOOl.jpg The NRC is in the Monitoring Response Mode as of 0946 on 3/11/11. Region IV will take the lead for U.S. sites and HQ for international sites to provide assistance in response to the earthquake in Japan and any adverse affects from a tsunami. This response mode change is NOT associated with event number 46668. Joe O'Hara Headquarters Operations Officer U.S. Nuclear Regulatory Commission Phone: 301-816-5100 Fax: 301-816-5151 email: hoo.hocPnrc.gov secure e-mail: hoolnrc.sgov.gov rt U.S.NRC Pntusrlfr A# ~asti ,La-amm~ E12 of445 Sharkey, JeI7r From: Breskovic, Clarence Sent: Friday, March 11, 2011 2:37 AM To: Breskovic, Clarence Subject: Powerful quake rocks northern Japan - Onagawa reactor automatically shuts down Friday, March 11, 2011 Powerful quake rocks northern Japan Kyodo News A powerful earthquake with a magnitude of 7.9 rocked northeastern Japan on Friday, measuring the highest level intensity of 7 on the Japanese seismic scale, in Miyagl Prefecture, the Japan Meteorological Agency said. Local police said many people were injured in the 2:46 p.m. quake, with reports of fires coming not only from the prefectural capital of Sendal but also from Tokyo, some 300 kilometers from Sendai, where a prolonged and powerful temblor was also felt. The Metropolitan Police Department said many people were injured when part of the Kudan Kaikan hall in Chiyoda Ward in central Tokyo collapsed. The agency issued a rare warning of huge tsunami for the Pacific coastal region including Iwate Prefecture. Public broadcaster NHK said a large number of cars were washed away into the sea when a tsunami hit the Kamaishl port In Iwate Prefecture. In Kyodo News' Sendai office, part of the ceiling collapsed and bookshelves and office equipment toppled over. ires occurred across a wide area, indcluding at an ironworks in Chiba Prefecture. )nagawa nuclear power plant In Mlyagi Prefecture automatically halted operations following the quake. Its operator, Tohoku .lectric Power Co., was checking whether any damage was caused. \ major blackout occurred across a wide area of northeastern Japan. -he quake affected the nation's key transportation systems, including Narita airport, which shut its runways for safety checks. JSGS earthquake map: ttD://earthouake.usgscgov/-earthauakes/recenteasww/-Mams/10/140 35.rphp lp://earthouake.usas.noy/earthquakes/-recenlesw-w/Quakes/uscO0O1xk8.ho# details E13 of445 Sharkey, JeffrY From: Breskovic, Clarence Sent: Friday, March 11,2011 2:50 AM To: Breskovic, Clarence Subject: Japan: Onagawa map and details ittp:l/world-nuclear.orQ/NuclearDatabase/reactordetails.aspx?id =27570&rid=CA833697-1FFF-4CBB-B729-74C88B99Z._5 E14 of 445 SharkeY, JeffrY From: Breskovic, Clarence Sent: Friday, March 11, 2011 3:29 AM To: Breskovic, Clarence Subject: Japan earthquake: Government Says No radioactive leaks at Tohoku nuke plants Govt; No radioactive leaks at Tohoku nuke plants four nuclear The government's Nuclear and Industrial Safety Agency says no abnormal levels of radiation have been reported at power plants in the quake-hit Tohoku region. Power companies have suspended the operation of the plants and are checking their safety. NHK News, FrIday, March 11, 2011 15:34 +0900 (JST) E15 of445 Sharkey, Jeffry From: Breskovic, Clarence Sent: Friday, March 11, 2011 5:31 AM To: Breskovic, Clarence Subject: Japan: media reports government has decided to declare a nuclear power emergency situation Fire at Tohoku Elec Onagawa nuclear plant rOKYO, March 11 (Reuters) - Afire broke out at Tohoku Electric Power Co's Onagawa nuclear plant in northeastern Japan 'ollowing Friday's major earthquake, Kyodo news agency said. nrior to the Kyodo report, the company had said it had not received information on whether there had been any problems at the iuclear power plant after the disaster. ;eparately, Fukushima Prefecture, the site of a Tokyo Electric Power nuclear power plant, said on Friday the plant's reactor :ooling system was functioning, denying an earlier report that it was malfunctioning. apanese media reported that the government had decided to declare a nuclear power emergency situation, which occurs if here is confirmation of radioactivity leaks from a nucleair power plant or a reactor cooling system breaks down. / El 6 of 445 Sharkey, Jeff,. From: Breskovic, Clarence Sent: Friday, March 11, 2011 6:11 AM To: Breskovic, Clarence Subject: Japan: Fukushima 1 & 2 cooling system problems According to NHK TV news (Japan Broadcasting Corporation) the Fukishima 1 & 2 reactors are experiencing reactor cooling problems after diesel generator failures but also saying there Is no cause for alarm even though the government has declared a "nuclear emergency situation". E17 of 445 Sharkey, Jeffr From: Breskovic, Clarence Sent: Friday, March 11, 2011 6; 13 AM To: Breskovic, Clarence Subject: Japan Update: Emergency Cooling System Working at Quake-hit Fukushima Plant Emergency Cooling System Working at Quake-hit Fukushima Plant rokyo Kjldo Word Service 1047 GMT 11 Mar 11 Tokyo, March 11 Kyodo -- An emergency cooling system was activated at the No. 1 reactor of the Fukushima No. 2 nuclear plant after a powerful earthquake hit northern Japan on Friday, the industry ministry said. rhe operator, Tokyo Electric Power Co., notified the ministry of the move, the ministry said, adding monitors outside the facility iave detected no abnormalities. E18 of 445 Sharkey, Jeffry From: Breskovic, Clarence Sent: Friday, March 11, 2011 6:34 AM To: Breskovic, Clarence Subject: Japan's Tepco shuts seven nuclear units after earthquake This is an older message but gives a more complete picture of the reactor situation when the earthquake hit. Japan's Tepco shuts seven nuclear units after earthquake Singapore (Platts)--11Mar2011/555 am EST/1055 GMT Japan's Tokyo Electric Power Company has shut a total of seven nuclear units at two of Its nuclear power plants in Fukushima prefecture after a 8.9-magnitude earthquake struck northeastern Japan off the main Honshu island Friday, a company Spokesman said. At its 4.4 GW Fukushima Daini plant, units 1, 2 and 3 (460 MW, 784 MW and 784 MW respectively) were operating during the earthquake and have all been shut, the spokesman said. Units 4, 5 and 6 (784 MW, 784 MW and 1.1 GW respectively) were all offilne for maintenance. At the Fukushima Dalichi plant, all four 1.1 GW units were running during the earthquake and were subsequently stopped, he added. At Tepco's Kashiwazakl-Kariwa nuclear plant in the northwest, units 2, 3 and 4 were already offline for inspections, while units 1, 5, 6 and 7 were operating during the earthquake and are still operating, the spokesman said. Fepco released a statement at 1630 Tokyo time (0730 GMT) confirming the outages, and adding: "At all the nuclear power .tatlons, monitoring posts, which monitor radiation through exhaust stacks have shown normal values. In other words, at the )resent, no radiation leaks have been confirmed." 'he company said that 4.05 million households had lost power as a result of the earthquake. he earthquake struck at a depth of 10 km, off Sanriku InMiyagi prefecture at around 2:46 pm (0546 GMT), the Japan leteorologlcal Agency said. he agency also issued a tsunami warning for Honshu's Pacific coast, warning of waves up to 3 meters high.