FEPC has released another statement. Other regular sources of information are the IAEA and the Japan Atomic Industrial Form.

This time there is no entry for Unit 4, which is the main source of debate between TEPCO and NRC Chairman Jazcko. I am told that is because there is no new information.

Update | 12:08 pm FEPC has provided an update on Unit 4 that argues the helicopter team observed water in the cooling pool.

I continue to be very worried about the possibility of the fire in the SNF cooling pools.

Another colleague has argued that the current plan is to connect an interim power line to the reactor site; the current efforts that seem so feeble are just an attempt to buy enough time to restore power.  That is more or less the view articulated in this AP article by Eric Talmadge and Mari Yamagchi quoting a senior official at TEPCO.

Update to Information Sheet Regarding the Tohoku Earthquake

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

As of 10:15AM (EST), March 17, 2011

  • Radiation Levels

o      At 9:20AM (JST) on March 17, radiation level at elevation of 1,000ft above Fukushima Daiichi Nuclear Power Station: 4,130 micro sievert.

o      At 9:20AM on March 17, radiation level at elevation of 300ft above Fukushima Daiichi Nuclear Power Station: 87,700 micro sievert.

o      At 11:10AM on March 17, radiation level at main gate (approximately 3,281 feet from Unit 2 reactor building) of Fukushima Daiichi Nuclear Power Station: 646.2 micro sievert.

o      At 7:50PM on March 17, radiation level outside main office building (approximately 1,640 feet from Unit 2 reactor building) of Fukushima Daiichi Nuclear Power Station: 3,599 micro sievert.

o      For comparison, a human receives 2,400 micro sievert per year from natural radiation in the form of sunlight, radon, and other sources. One chest CT scan generates 6,900 micro sievert per scan.

  • Fukushima Daiichi Unit 1 reactor

o      Since 10:30AM on March 14, the pressure within the primary containment vessel cannot be measured.

o      At 12:50PM on March 17, pressure inside the reactor core: 0.185MPa.

o      At 12:50PM on March 17, water level inside the reactor core: 1.7 meters below the top of the fuel rods.

  • Fukushima Daiichi Unit 2 reactor

o      At 12:25PM on March 16, pressure inside the primary containment vessel: 0.40MPaabs.

o      At 12:50PM on March 17, pressure inside the reactor core: -0.027MPa.

o      At 12:50PM on March 17, water level inside the reactor core: 1.8 meters below the top of the fuel rods.

  • Fukushima Daiichi Unit 3 reactor

o      At 12:40PM on March 16, pressure inside the primary containment vessel: 0.23MPaabs.

o      At 6:15AM on March 17, pressure inside the suppression chamber was observed to fluctuate.

o      At 7:00AM on March 17, pressure inside the suppression chamber: 0.22MPa.

o      At 7:05AM on March 17, pressure inside the suppression chamber: 0.44MPa.

o      At 7:10AM on March 17, pressure inside the suppression chamber: 0.26MPa.

o      At 7:15AM on March 17, pressure inside the suppression chamber: 0.52MPa.

o      At 7:20AM on March 17, pressure inside the suppression chamber: 0.13MPa.

o      At 7:25AM on March 17, pressure inside the suppression chamber: 0.57MPa.

o      At 9:48AM on March 17, a Self Defense Forces helicopter made four water drops aimed for the spent fuel pool.

o      At 4:35PM on March 17, pressure inside the reactor core: 0.005MPa.

o      At 4:35PM on March 17, water level inside the reactor core: 1.95 meters below the top of the fuel rods.

o      At 7:05PM on March 17, a police water cannon began to shoot water aimed at the spent fuel pool until 7:22PM.

o      At 7:35PM on March 17, five Self Defense Forces emergency fire vehicles shot water aimed at the spent fuel pool, until 8:09PM.

  • Fukushima Daiichi Unit 5 reactor

o      At 2:00PM on March 16, the temperature of the spent fuel pool was measured at 145 degrees Fahrenheit.

  • Fukushima Daiichi Unit 6 reactor

o      At 2:00PM on March 16, the temperature of the spent fuel pool was measured at 140 degrees Fahrenheit.

Update: FEPC has released more information, including a status on cooling pool at Unit 4.

Update to Information Sheet Regarding the Tohoku Earthquake

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

As of 11:30AM (EST), March 17, 2011

  • Fukushima Daiichi Unit 4 reactor

o      No official updates to the information in our March 16 update have been provided.

o      Through visual surveys from the helicopter flying above the Unit 4 reactor secondary containment building on March 16, it was observed that water remained in the spent fuel pool. The helicopter was measuring radiation levels above Unit 4 reactor secondary containment building in preparation for water drops. This report has not been officially confirmed.

  • Fukushima Daiichi Unit 5 reactor

o      At 12:00PM on March 17, the temperature of the spent fuel pool was measured at 147.56 degrees Fahrenheit.

o      At 5:00PM on March 17, the temperature of the spent fuel pool was measured at 148.1 degrees Fahrenheit.

  • Fukushima Daiichi Unit 6 reactor

o      At 12:00PM on March 17, the temperature of the spent fuel pool was measured at 144.5 degrees Fahrenheit.

o      At 5:00PM on March 17, the temperature of the spent fuel pool was measured at 147.2 degrees Fahrenheit.

Our official sources are:

  • Office of The Prime Minister of Japan
  • Nuclear and Industrial Safety Agency (NISA)
  • Tokyo Electric Power Company (TEPCO) Press Releases