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@lillymunster eh I didnt see that

That was very weird I had to restart it too,

@Edano looking at the vent pipe entrance. Active corium that is splattering and bubbling could easily go in that. It also says that the spot right below the vent is a collection spot for corium and the sand pocket. So many things right there making it prone to failure. IIRC they didn't get AC back until after all the explosions?

@lillymunster in #2 they established seawater injection by hoses before the explosion. the explosion could have happened when corium dripped into the water in the pedestal and blew the hole in the torus (theory). (?) see diagram further down)

@Edano I don't know if they could get water into the drywell without power? Firehose connection would have run inside the RPV? So unless the water followed the melted fuel water couldn't get out of the RPV or pedestal?

@lillymunster i think the control rod seals were broken in the rpv bottom head, so water could have flown to the pedestal.

@Edano I don't think water could get past the pedestal. I think we have a water injection schematic somewhere that TePCO put out explaining how they hooked into the water system. If water was on top of the corium and it collected around that edge the water may not have mattered if it wasn't in there first or wasn't enough to not boil off. that document mentions that the transition at the edge of the drywell can rupture

Thus, the shell is subject
to temperature-induced creep rupture at the
locations where it would be heated by
adjoining debris

well, the doc says it is an important emergency measure to flood the drywell in a meltdown scenario. maybe they found a way to do that at least in #2.

TV journalists discuss coverage of Japan disaster

TV journalists from Japan, South Korea, and China have discussed how television covered the earthquake and tsunami that hit Japan on March 11th.

Six TV journalists from the 3 countries had a 3-hour discussion at a symposium in the Japanese city of Sapporo on Friday. About 150 people were in the audience.

An NHK news presenter said he still wonders whether TV broadcasters could have saved more lives during the disaster. He said broadcasters need to keep making programs about the survivors and should consider how best to use the Internet when reporting disasters.

A news presenter from Japanese commercial broadcaster TBS said some reporters on the ground weren't sure whether they should carry on reporting or start helping to rescue people.

A TV producer from South Korea said South Korean coverage of the disaster was dramatic and emotional whereas Japanese coverage was very calm.

Saturday, September 24, 2011 09:09 +0900 (JST)
www3.nhk.or.jp

if you look at the 7th slide on here it shows the torus room www.tepco.co.jp

@Edano I don't believe the grouting has been done but not certain

@Edano no idea I'm afraid I must sleep will search more in nmorning

but it's not likely.

The other thing was the refueling connection and the underside of the containment cap can concentrate hydrogen under the cap.

@Ian There are lots of details in that document that back up your idea. Direct containment heating, fuel can be made aerosol in the containment in various circumstances and can super heat or flash heat containment.