[ RadSafe ] Rolling blackouts

Thompson, Dewey L DThompson3 at ameren.com
Mon Feb 7 08:33:41 CST 2011

Frazil ice issues are actually quite common, Frazil ice is a state of water that is slush, when it gets cold enough, the cooling water strainers or input pathway clogs.  Lack of secondary cooling will take a unit down.  

There is usually at least one plant per year that has to downpower or trip due to ice buildup.  

Of course, I don't know what percentage of fossil plants are affected.

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Staff HP
Radiation Protection Department
T 314.225.1061
F 573.676.4484
E DThompson3 at ameren.com
Ameren Missouri
Junction CC & Highway O
Fulton, MO 65251
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-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Steven Dapra
Sent: Friday, February 04, 2011 9:49 PM
To: radsafe at agni.phys.iit.edu
Subject: [ RadSafe ] Rolling blackouts

Feb. 4, 2011

	Certain areas in Texas and New Mexico were subjected to rolling 
blackouts as a result of the recent extreme cold.

	Does anyone know of a case when a reactor had to shut down or whose 
operation was adversely affected by cold weather?

Steven Dapra

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