[ RadSafe ] lava goes up? Fwd: [New post] Man made corium lava – from Fukushima, toxic for centuries

Sun Apr 21 18:35:24 CDT 2013

zip.....They found that corium lava can melt upwards of 30 cm
(12″) of concrete in 1 hour!....zip.

Is it 8 feet by the end of working day and 168 feet in a week!
What is the containment height?
Don't we need to worry about lava breached containment in Fukushima through the roof and measure not gaseous effluents in the perimeter but lava flow rate in the air?

Yes, it does melt concrete, it is why in Chernobyl underground cooling water channel was dig by miners from Donetsk. They probably did not live long after...

But all those huge numbers like 300 millimeters (300,000 micrometers) in only (one) 1 hour! very scary. 
1. Meaningless number.
2. Suspicious number, at minimum.

May be guys in Argonne were boiling their lava? Well, that would make more sense. When you boil something, vapor goes up. 
Next, time they may need to better control their experiment and not to confuse gravitation with evaporation.

Emil.

--- On Sat, 4/20/13, Roger Helbig <rwhelbig at gmail.com> wrote:

From: Roger Helbig <rwhelbig at gmail.com>
Subject: [ RadSafe ] Fwd: [New post] Man made corium lava – from Fukushima, toxic for centuries
To: "RADSAFE" <radsafe at health.phys.iit.edu>
Date: Saturday, April 20, 2013, 5:40 PM

Now they are making claims about Corium Lava - and this is probably
spreading quickly through the anti-nuke propaganda world as the latest in
their doom and gloom scenarios.

Roger Helbig

---------- Forwarded message ----------
From: nuclear-news <comment-reply at wordpress.com>
Date: Fri, Apr 19, 2013 at 11:01 PM
Subject: [New post] Man made corium lava – from Fukushima, toxic for
centuries

**
  Christina MacPherson posted: "Wired: ‘Healthy debate’ about location of
Fukushima corium — Lava can melt a foot of concrete per hour — Cooling with
water may not stop corium flow Title: The Most Dangerous (Man-Made) Lava
Flow http://enenews.com/wired-healthy-debate-about-where-fukushi"    Respond
to this post by replying above this line
      New post on *nuclear-news*
<http://nuclear-news.net/author/christinamacpherson/>  Man made corium lava
– from Fukushima, toxic for
centuries<http://nuclear-news.net/2013/04/20/man-made-corium-lava-from-fukushima-toxic-for-centuries/>
by
Christina MacPherson <http://nuclear-news.net/author/christinamacpherson/>

*[image: highly-recommended]<http://antinuclearinfo.files.wordpress.com/2010/09/highly-recommended.gif>Wired:
‘Healthy debate’ about location of Fukushima corium — Lava can melt a foot
of concrete per hour — Cooling with water may not stop corium flow Title:
The Most Dangerous (Man-Made) Lava Flow
http://enenews.com/wired-healthy-debate-about-where-fukushima-coriums-are-lava-can-melt-a-foot-of-concrete-per-hour-cooling-with-water-may-not-stop-corium-flow
*
*Source: Wired*
*Author: Erik Klemetti*
*Date: April 18, 2013 at 11:45a ET*
*h/t Room101*
Title: The Most Dangerous (Man-Made) Lava
Flow<http://www.wired.com/wiredscience/2013/04/the-most-dangerous-manmade-lava-flow/>

[...] researchers at the Argonne National Lab have created corium in the
laboratory [...] They found that corium lava can melt upwards of 30 cm
(12″) of concrete in 1 hour! This is why it is so important to know if a
nuclear reactor accident has gone into true “meltdown” as the corium lava
will rapidly melt its way through the inner containment vessels (or more)
in a matter of hours unless it can be cooled again.

However, results from these CCI (core-concrete interaction) experiments,
suggest that cooling with water may not be sufficient to stop corium from
melting the concrete. One thing to remember — much of the melting of
concrete during a meltdown occurs within minutes to hours, so keeping the
core cool is vital for stopping the corium for breaching that containment
vessel.

[...] TEPCO, the Japanese energy company who ran Fukushima Dai’ichi, claims
that the corium didn’t breach the outer wall of the containment vessel
(although there is a healthy debate about this).  [...]

So, why is corium so dangerous? Well, even long after the flow has stopped,
that lava will be highly radioactive for decades to centuries (along with
the surrounding countryside if radioactive material made it out of the
containment vessel) as the various radioactive materials in the lava decay.
In fact, we don’t even have pictures of the corium lava from Fukushima
Dai’ichi due to the high levels of radioactivity near the reactor. [...]
**

*See also: Analysis: Melted fuel completely penetrated concrete in under 15
hours at GE Mark I -- Shows little decline in speed
(CHART)<http://enenews.com/analysis-melted-fuel-completely-penetrated-concrete-15-hours-ge-mark-shows-little-decline-speed-chart>
*
  *Christina MacPherson<http://nuclear-news.net/author/christinamacpherson/>
* | April 20, 2013 at 6:01 am | Categories: Fukushima
2013<http://nuclear-news.net/?cat=134743862>,
Reference <http://nuclear-news.net/?cat=10919> | URL: http://wp.me/phgse-c53

Comment<http://nuclear-news.net/2013/04/20/man-made-corium-lava-from-fukushima-toxic-for-centuries/#respond>
   See all comments<http://nuclear-news.net/2013/04/20/man-made-corium-lava-from-fukushima-toxic-for-centuries/#comments>

     Unsubscribe or change your email settings at Manage
Subscriptions<https://subscribe.wordpress.com/?key=08885aed3993e49a821da296e09588a3&email=rwhelbig%40gmail.com>.

*Trouble clicking?* Copy and paste this URL into your browser:
http://nuclear-news.net/2013/04/20/man-made-corium-lava-from-fukushima-toxic-for-centuries/
         Thanks for flying with WordPress.com <http://wordpress.com>
_______________________________________________
You are currently subscribed to the RadSafe mailing list

Before posting a message to RadSafe be sure to have read and understood the RadSafe rules. These can be found at: http://health.phys.iit.edu/radsaferules.html

For information on how to subscribe or unsubscribe and other settings visit: http://health.phys.iit.edu