Michele Kearney's Nuclear Wire: FEPC Update to Information Sheet Regarding Tohoku Earthquake

Tuesday, March 29, 2011

Update to Information Sheet Regarding the Tohoku Earthquake

The Federation of Electric Power Companies of Japan (FEPC) Washington DC Office

As of 11:00AM (EST), March 29, 2011

At 11:45PM (JST) on March 28, TEPCO announced that plutonium 238, 239 and 240 were detected in the soil sampled on March 21st and 22nd at five spots in Fukushima Daiichi Nuclear Power Station. Concentration of detected plutonium 238, 239 and 240 are the same level of the fallout observed in Japan at the atmospheric nuclear tests in the past and poses no major impact on human health.
At 6:30PM on March 29, radiation level at main gate (approximately 3,281 feet from Unit 2 reactor building) of Fukushima Daiichi Nuclear Power Station: 177 micro Sv/hour.
At 6:30PM on March 29, radiation level at west gate (approximately 3,609 feet from Unit 2 reactor building) of Fukushima Daiichi Nuclear Power Station: 120.2 micro Sv/hour.
Measurement results of environmental radioactivity level around Fukushima Nuclear Power Station announced at 7:00PM on March 29 are shown in the attached PDF file. English version is available at: http://www.mext.go.jp/english/radioactivity_level/detail/1304082.htm
For comparison, a human receives 2,400 micro Sv per year from natural radiation in the form of sunlight, radon, and other sources. One chest CT scan generates 6,900 micro Sv per scan.

At 1:00PM on March 29, pressure inside the reactor core: 0.371MPa.
At 1:00PM on March 29, water level inside the reactor core: 1.65 meters below the top of the fuel rods.
At 1:00PM on March 29, pressure inside the primary containment vessel: 0.265MPaabs.
At 1:00PM on March 29, the temperature of the reactor vessel measured at the water supply nozzle: 570.9 degrees Fahrenheit
As of 3:00PM on March 29, transferring the water found at the turbine building to the condenser continues.
As of 4:00PM on March 29, the injection of freshwater into the reactor core continues.

At 1:00PM on March 29, the temperature of the spent fuel pool: 114.8 degrees Fahrenheit.
At 1:00PM on March 29, pressure inside the reactor core: -0.025MPa.
At 1:00PM on March 29, water level inside the reactor core: 1.5 meters below the top of the fuel rods.
At 1:00PM on March 29, pressure inside the primary containment vessel: 0.1MPaabs.
As of 4:00PM on March 29, the injection of freshwater into the reactor core continues.
As of 7:00PM on March 29, approximately 96 tons of water in total has been injected into the spent fuel storage pool.

At 12:00PM on March 29, pressure inside the reactor core: 0.029MPa.
At 12:00PM on March 29, water level inside the reactor core: 1.85 meters below the top of the fuel rods.
At 12:00PM on March 29, pressure inside the primary containment vessel: 0.1075MPaabs.
At 2:17PM on March 29, TEPCO began to shoot freshwater aimed at the spent fuel pool, with a specialized vehicle normally used for pumping concrete, until 6:18PM (approximately 100 tons in total).
As of 4:00PM on March 29, the injection of freshwater into the reactor core continues.
As of 7:00PM on March 29, approximately 4,697 tons of water in total has been shot to the spent fuel storage pool.

At 11:50AM on March 29, lighting was restored in the Central Control Room.
As of 7:00PM on March 29, approximately 960 tons of water in total has been shot to the spent fuel storage pool.

At 2:00PM on March 29, the temperature of the spent fuel pool: 101.5 degrees Fahrenheit.

At 2:00PM on March 29, the temperature of the spent fuel pool: 70.7 degrees Fahrenheit.

At 3:10PM on March 28, the temperature of the spent fuel pool: 95 degrees Fahrenheit.
As of 7:00PM on March 29, approximately 130 tons of water in total has been injected to the spent fuel storage pool.

From: Taro Ishida [ishida@denjiren.com]
Sent: 03/29/2011 01:30 PM AST
To: Taro Ishida <ishida@denjiren.com>
Subject:

Information Sheet Regarding the Tohoku Earthquake (from FEPC Washington Office)

Dear Friends,

Please find the updated information sheet below and attached that summarizes the events from Update-14 sent at 12:28PM on 3/28.

For your reference, JAIF (Japan Atomic Industrial Forum) has been posting the translation of news reports on their website.

Please direct any questions regarding this document to me, Ishida@denjiren.com or Samuel Lederer, Researcher of FEPC at lederer@denjiren.com.

Our official sources are:

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