At ~1:15 in
Plant Manager Yoshida at 1F: HQ! HQ! It’s bad! It’s bad!
HQ: Yes!? Yes?
Yoshida: Reactor 3, probably steam explosion, it just happened!
HQ: (in a weak, almost disappearing voice) Alright… (someone else) O..OK.. Emergency communication…
HQ: That, that is the same as Reactor 1 [explosion], isn’t it?
Yoshida: Yes, in the building, inside the Anti-Seismic Building here, we can’t tell, but a side-way shake, clearly different from an earthquake, came, and there was no after-shake like in an earthquake. So I think this is an explosion, just like what happened in Reactor 1.
At 3:20 in
HQ (Probably Mr. Komori?, executive director, making a phone call to NISA): At 11:02AM, (was that 11:02?), at 11:02, in Reactor 3, there was a possibility of hydrogen explosion, we’ve been just informed by the plant. It’s the first report…
CHAIRMAN JACZKO: [...] Just go back one more time and, and look and see if you can’t come up with a, with what I would call a true worst-case scenario; namely, the worst-case that is physically possible.
TRISH HOLAHAN: Okay.
CHAIRMAN JACZKO: See if you can do that because I, I have to believe that there is no possibility in a light-water reactor design to reject an entire core. I mean, that’s basically steam explosion; isn’t it?
TRISH HOLAHAN: Yes.
Ian Goddard reviewed the steam explosion scenario here: http://iangoddard.com/fukushima01.html
Published: August 9th, 2012 at 7:24 am ET
- NRC’s possible worst case scenario: Examined MOX at No. 3 — Also speculated steam explosion would “reject an entire core” from reactor March 6, 2012
- Goddard’s Journal analysis indicates steam explosion at Reactor No. 3 — NRC discussed steam explosion ejecting entire core (VIDEOS) April 10, 2012
- Fukushima Boss after 3/11: “It’s awful, awful… No. 3 reactor just blew, probably a steam explosion” — Steam explosion, not hydrogen? Reactor blew up, not reactor building? (VIDEO) October 13, 2012
- Nuclear Engineer: New footage shows Reactor 1 has “ruptured” containment structure, most likely from the explosion — Water to cool “what’s left of core” flowing into environment (VIDEO) November 15, 2013
- Gov’t Experts: Fukushima fuel rods were melting 75 minutes after tsunami; Reactor core not covered with water 10 minutes after power blackout — Worker: Before explosion, Unit 1 “filled with what looked like steam or dust… a series of large bangs… noise never heard before” (VIDEO) August 16, 2014