[ RadSafe ] Fwd: [New post] Fukushima nuclear decommissioners have no ide...

Mon Apr 6 10:30:06 CDT 2015

Hmmmmm,

      Why move the cores at all???  Let them  cool and then pour concrete 
over them and let it harden???

      Or let them cool and then move them.

      Joe Preisig

In a message dated 4/6/2015 7:57:30 A.M. Eastern Daylight Time,  
rwhelbig at gmail.com writes:

Is the  core of these reactors really molten or is this  hype?

Thanks.

Roger Helbig

Fukushima nuclear  decommissioners have no idea how to deal with molten
nuclear  cores

by Christina MacPherson

Times: "The worst possible result"  revealed at Fukushima -- Plant
Chief: Centuries may pass before humans find  a way to deal with molten
cores -- Top Official: "We have no idea" what to  do, "the technology
simply doesn't exist... I can't say it's possible"  (VIDEOS)
http://enenews.com/times-worst-possible-result-revealed-fukushima-plant-chie
f-centuries-pass-before-humans-invent-deal-molten-fuel-videos

NHK  'Nuclear Watch' transcript, Mar 31, 2015 (emphasis added):

NHK: The  people trying to decommission the Fukushima Daiichi nuclear
plant have been  hit by setback after setback... and faced accusations of
misconduct. It's  lost them a lot of public trust... [Naohiro Masuda,
president of Tepco's  decommissioning company] revealed he's not sure
if he can comply with the  government set plan [for] removing the fuel...
Naohiro Masuda, president of  Tepco's Fukushima Daiichi Decommissioning
Company: We have no idea about  the debris. We don't know its shape or
strength. We have to remove it  remotely from 30 meters above, but we
don't have that kind of technology,  it simply doesn't exist... We
still don't know whether it's possible to  fill the reactor containers
with water. We've found some cracks and holes  in the three damaged
container vessels, but we don't know if we found them  all. If it turns
out there are other holes, we might have to look for some  other way to
remove the debris.
NHK: Asked [about the gov't target to  begin by 2020], his answer was
surprisingly candid.
Masuda: It's a very  big challenge. Honestly speaking, I cannot say
it's possible.

Dale  Klein, Tepco Nuclear Reform Monitoring Committee chair, Mar 31,
2015 (at  24:00 in):

Richard Lloyd Parry, The Times: I was at the plant last week  on the
tour and we talked Mr. Ono, the boss. He made no bones about the  fact
that the technology... to remove the molten or semi-molten fuel  doesn't
exist yet... I asked him how can you be sure that it will be, and  he
said, "Well, 200 years ago people would never have dreamed of  bullet
trains or mobile phones, but they exist." That seems to be the  scale
of the leap... that's going to be required. So there must be  immense
uncertainties around that... There must surely be a chance that it  won't
work out, and that the eventual solution will be something like  the
Chernobyl solution... a sarcophagus of some kind sealing in the  3
plants...
Klein: This is something that has never been done... Units  1, 2, and 3...
molten fuel penetrated the bottom of the vessel... We don't  know... how
much and where it moved.

The Times (complete article),  Mar 28, 2015: The chief of the Fukushima
nuclear power station has admitted  that the technology needed to
decommission three melted-down reactors does  not exist, and he has no
idea how it will be developed [and] conceded that  the stated goal of
decommissioning the plant by 2051 may be impossible  without a giant
technological leap... [Tepco] continues to be embarrassed  by leaks of
radiation into the sea... Recent scans of one revealed the  worst
possible result: all the nuclear fuel that was in the  reactor's
furnace has melted and dripped down into the concrete  outer
containment vessel... The alternative would be to seal the  entire
complex in a giant sarcophagus like the one covering Chernobyl --  butit
would have to extend underground to stop contaminated  groundwater
reaching the sea. [See the initial report based on an excerpt  from
this article here]

Akira Ono, chief of Fukushima Daiichi, Mar  28, 2015: "There are so
many uncertainties... For removal of the debris, we  don't have accurate
information... or any viable methodology... I believe  human beings have
the capability to develop technologies... It may take 200  years."

Watch: NHK 'Nuclear Watch' | Klein Press  Conference

Christina MacPherson | April 6, 2015 at 7:46 am |  Categories:
Fukushima 2015 | URL:  http://wp.me/phgse-jd8

http://nuclear-news.net/2015/04/06/fukushima-nuclear-decommissioners-have-no
-idea-how-to-deal-with-molten-nuclear-cores/
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