（福島第一原発）４号機は、２回の火災と１回の爆発を起こしていた！
３月１５日６時１４分ごろ、大きな衝撃音と振動が発生し、その後、
原子炉建屋５階屋根付近に損傷を確認した。
さらに、１５日９時３８分には原子炉建屋３階北西コーナー付近で
火災が発生していることが確認されたが、同日１１時頃、自然に火が消えて
いることを確認した。また、１６日５時４５分頃にも、原子炉建屋４階北西部
付近で炎が上がっているとの連絡があったが、同日６時１５分頃、
現場で火は確認できなかった。
http://fukushima-diary.com/2012/06/reactor4-had-one-explosion-and-2-fires-in-march-2011/ より
Reactor4 had one explosion and 2 fires in March 2011
Tepco published the in-house Fukushima accident investigation report on 6/20/2012.
In this report, which is assumed to downplay the accident, Tepco reported that there were 2 fires in reactor4 after the explosion, and those fires were naturally extinguished fortunately.
Also, it is stated that they could not approach SFP4 because the radiation level was too high.
Tepco is emphasizing the safety of SFP4 to say they can inject cooling water even when another aftershock hits Fukushima, but it suggests they won’t be able to reach SFP4 in case of another accident. (cf, Tepco has no clue for the worst senario of SFP4)
<Translate>
3/14/2011
10:30AM Tepco tried to go to SFP4 to investigate the state but the radiation level inside of the reactor building was too high, they couldn’t enter. (The temperature of SFP4 was 84℃ at 4:08)
<End>
<Translate>
3/15/2011
6:14 AM Major impulsive sound and vibration were observed, and they confirmed the roof of the reactor building was damaged.
9:38 AM Fire was observed at North West corder of the 3rd floor of the building, but they confirmed the fire was naturally extinguished at 11:00AM.
3/16/2011
5:45AM Another fire was reported at the North West corner of the 4th floor of the building, but it was missing at 6:15AM.
<End>
↓ Reactor4 damaged by vibration [LINK]
↓ The 3rd/5th floor of reactor 4 building [LINK]
↓ The 4th floor of reactor4 building
Related article..Melted reactor 4
。
