RE: TVA BFN Fuel Pool Cooling Pump AG-110M

[Jack Priest <jmpriest@tol-ed.com>]

eltrolytic reaction? No way. Talk to your nuke Engineers. Im sure they will lean towards mechanical degradation (wear) of control components which are composed of Cd, In, and Ag. with the silver being about 80%.

----------
From: 	Scarboro, Michael G.[SMTP:mgscarboro@tva.gov]
Sent: 	Tuesday, July 22, 1997 9:50 AM
To: 	Multiple recipients of list
Subject: 	TVA BFN Fuel Pool Cooling Pump AG-110M

Many thanks to all of you who responded to our post regarding high
radiation levels on one of our fuel pool cooling pumps.  The cause seems
to be the high Ag-110M content.  Based upon your responses the most
likely method fo the Ag-110M accumulation on the pump, is some sort of
eltrolytic reaction.  We will be investigating further.  I will post any
results that prove worthy.

Again thanks for your information.

Mike Scarboro
ALARA Specialist

Tennessee Valley Authority      
Browns Ferry Nuclear Plant
POB 2H-BFN
(205)729-2669
mailto:mgscarboro@tva.gov