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.Fukushima Daiichi Unit 1 reactor
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.
o Since 10:30AM on March 14, the pressure within the primary containment vessel cannot be measured.Fukushima Daiichi Unit 2 reactor
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.
o At 12:25PM on March 16, pressure inside the primary containment vessel: 0.40MPaabs.Fukushima Daiichi Unit 3 reactor
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.
o At 12:40PM on March 16, pressure inside the primary containment vessel: 0.23MPaabs.Fukushima Daiichi Unit 5 reactor
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.
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.
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