[ RadSafe ] Suppression Pool Anyone?

Jeff Terry terryj at iit.edu
Tue Apr 12 13:03:45 CDT 2011

Hi Ed,

The suppression pool is the torus shaped device at the bottom of the reactor.
You can see an image here: http://www.nucleartourist.com/type/bwr.htm

In case of a pressure (steam) build up in the drywell, the pressure can be vented 
into the wetwell (suppression pool). The wetwell has a large volume of water which 
acts to cool the steam. The steam released from the reactor pressure vessel can
contain various radionuclides depending upon the amount of damage suffered
by the fuel rods. 

This was the source of the radioactivity in the surpression pool. 


Jeff Terry
Asst. Professor of Physics
Life Science Bldg Rm 166
Illinois Institute of Technology
3101 S. Dearborn St. 
Chicago IL 60616
terryj at iit.edu

On Apr 12, 2011, at 12:51 PM, Ed Hiserodt wrote:

> Here is the latest from the N.E.I. on Fukushima:
> Authorities said much of the high-level radiation leaked from reactor 2 on
> March 15 and 16, early in the accident. Abnormalities in the reactor's
> suppression pool caused the radiation release, the Japan Nuclear
> <http://www.nsc.go.jp/NSCenglish/index.htm>  Safety Commission said.
> Radiation continues to leak from the suppression pool, the commission said,
> but the volume has dropped considerably.
> Is the "suppression pool" the same as the spent fuel storage pool?   I
> wouldn't think so.  But I've not heard the term before in reference to BWRs.
> Ed Hiserodt
> Controls & Power, inc.
> Little Rock
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