Another statement from FEPC.
My comment: TEPCO is fighting the good fight, continuing to inject seawater into Units 1 and 2. TEPCO has suspended seawater injection on Unit 3 after the explosion. That looks very bad. Remember, the goal now is to prevent breaching of the primary containment vessels. There also remains an outstanding question about the status of spent fuel rods in cooling ponds.
I think we should avoid throwing stones at right now. There will be plenty of time to assign blame later. Right now, we should all be rooting for TEPCO to gain the upper hand.
Update to Information Sheet Regarding the Tohoku Earthquake
The Federation of Electric Power Companies of Japan (FEPC) Washington DC Office
As of 1:00PM (EST), March 14, 2011
- Radiation Levels
- At 9:37AM (JST) on March 14, a radiation level of 3130 micro sievert was recorded at the Fukushima Daiichi Nuclear Power Station.
- At 10:35AM on March 14, a radiation level of 326 micro sievert was recorded at the Fukushima Daiichi Nuclear Power Station.
- Most recently, at 2:30PM on March 14, a radiation level of 231 micro sievert was recorded at Fukushima Daiichi Nuclear Power Station.
- Fukushima Daiichi Unit 1 reactor
- As of 12:00AM on March 15, the injection of seawater continues into the primary containment vessel.
- Fukushima Daiichi Unit 2 reactor
- At 12:00PM on March 14, in response to lower water levels, TEPCO began preparations for injecting seawater into the reactor core.
- At 5:16PM on March 14, the water level in the reactor core covered the top of the fuel rods.
- At 6:20PM on March 14, TEPCO began to inject seawater into the reactor core.
- For a short time around 6:22PM on March 14, the water level inside the reactor core fell below the lower measuring range of the gauge. As a result, TEPCO believes that the fuel rods in the reactor core might have been fully exposed.
- At 7:54PM on March 14, engineers confirmed that the gauge recorded the injection of seawater into the reactor core.
- At 8:37PM on March 14, in order to alleviate the buildup of pressure, slightly radioactive vapor, that posed no health threat, was passed through a filtration system and emitted outside via a ventilation stack from Fukushima Daiichi Unit 2 reactor vessel.
- Fukushima Daiichi Unit 3 reactor
- At 11:01AM on March 14, an explosion occurred at Fukushima Daiichi Unit 3 reactor damaging the roof of the secondary containment building. Caused by the interaction of hydrogen and oxygen vapor, in a fashion to Unit 1 reactor, the explosion did not damage the primary containment vessel or the reactor core.
- As of 12:38AM (JST) on March 15, the injection of seawater has been suspended.
- Fukushima Daini Unit 1 reactor
- As of 1:24AM on March 14, TEPCO commenced the cooling process after the pumping system was restored.
- At 10:15AM on March 14, TEPCO confirmed that the average water temperature held constant below 212 degrees Fahrenheit.
- Fukushima Daini Unit 2 reactor
- At 7:13AM on March 14, TEPCO commenced the cooling process.
- As of 3:52PM on March 14, the cooling function was restored and the core temperature was stabilized below 212 degrees Fahrenheit.
- Fukushima Daini Unit 3 reactor
- As of 12:15PM on March 13, reactor has been cooled down and stabilized.
- Fukushima Daini Unit 4 reactor
- At 3:42PM on March 14, cooling of the reactor commenced, with TEPCO engineers working to achieve cold shutdown.