Hi Ken,
Long
time no talk to. I believe the calculation results have been benchmarked
with real data, but since we haven’t had any misloadings or unwanted
dilutions, I am hesitant to say that . We have taken a look at source
range response as the first 6 assemblies have been loaded into the core. The
solution of putting something in the core while loaded might be a solution, but
that instrument would need to be tied into the flux monitoring system(we would
need to know if we got the high flux at shutdown alarm from it). Then
again, what the OE is saying is that the source range detector will work, it
just might tell us when we are really close to having a problem. Do you
know of any other plants that can relate to this?
__________________________________________________________
Charlene Chotalal
Lead Reactor Engineer
Surry Power Station
Dominion Generation
Work: (757)-365-2819
__________________________________________________________
From: pwrrm@retaqs.com
[mailto:pwrrm@retaqs.com] On Behalf Of Kenneth R Pike
Sent: Monday, September 28, 2009 1:34 PM
To: PWR Reactivity Management
Subject: Re: [Pwrrm] OE29438 Questions
Charlene,
have the calculation results been benchmarked to actual data? If so how well do
they agree? A alternate solution would be to bring back a "dunker source
range" that can be placed in the core while being loaded to monitor 1/m.
They were used during initial core loading (cycle 1) at most plants. It can be
tied into existing SR indication to allow remote monitoring.