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Day 2 Fukushima 1 Nuclear Accidents
Day 2 Fukushima 1 Nuclear Accidents
6:05 AM
Posted by Energetic
Fukushima 1 Nuclear Accident Day 2: Saturday, 12 March
- 02:44
- Emergency battery power for the High Pressure Core Flooder System for #3 ran out.
- 04:15
- Fuel rods in #3 are exposed.
- 04:30
- Officials declare a heightened state of alert for Fukushima II (Dai-ni). Officials declare a state of nuclear emergency for Fukushima I (Dai-ichi).
- 05:30
- Despite the high risk of the hydrogen ignited after combining with oxygen in water or the atmosphere, in order to release some of the pressure inside the reactor at Fukushima I unit 1, the decision is taken to vent some of the steam (which contained a small amount of radioactive material) into the air in the concrete container building surrounding the unit.
- 10:09
- TEPCO confirms that a small amount of vapor has been released into the air to release pressure in reactor unit 1 (Fukushima I).
- 10:58
- Pressure still remains too high inside reactor unit 2 at Fukushima I. In order to alleviate some of this pressure, a consensus is reached to, once more, vent radioactive vapor into the air.
- 15:30
- Evacuation of residents within 3 km of Fukushima II underway. Evacuation of residents within 10 km of Fukushima I underway.
- Unit 1 at Fukushima I: cameras document a massive hydrogen explosion on the outer structure of one of four buildings at the plant. It also documents the outer structure collapsing. TEPCO 3 hrs later announces that four persons who are employed at the power plant have been injured.
- 18:36 (approximately)
- TEPCO announces that four persons who are employed at the power plant have been injured in the unit one explosion.
- 20:00
- Uncertainty surrounds the actual cause of the blast at Fukushima I (later identified as a hydrogen explosion) and the damage caused.
- Yukio Edano announces that the concrete building surrounding the steel reactor container at unit 1 in Fukushima I has collapsed as a result of the explosion; however no damage has been inflicted on the reactor itself.
- 21:40
- Evacuation zone around Fukushima I extended to 20 km. Evacuation zone around Fukushima II extended to 10 km.
- To release pressure within the reactor unit 1 at Fukushima I, steam is released out of the unit into the air. This steam contains water vapor, Hydrogen, Oxygen and some radioactive material, mostly tritium and 16N.
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This entry was posted on October 4, 2009 at 12:14 pm, and is filed under
Fukushima 1 Nuclear Accidents Timeline
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