Watts Bar operates at 220 steps on the contolling bank. The function still exists but due to C11, it stops auto withdrawal at 220 steps.

-----Original Message----- From: respvr-bounces@retaqs.com [mailto:respvr-bounces@retaqs.com] On Behalf Of Mcinvale, James B. Sent: Monday, February 06, 2006 2:28 PM To: RE Supervisors Subject: RE: [Respvr] Westinghouse NSSS Auto Rod Withdrawal Question

Callaway has defeated it, for reasons related to accident analysis. Jim McInvale 573-676-8247

-----Original Message----- From: respvr-bounces@retaqs.com [mailto:respvr-bounces@retaqs.com] On Behalf Of Hugh_E_McKenney@dom.com Sent: Monday, February 06, 2006 12:29 PM To: RE Supervisors Subject: [Respvr] Westinghouse NSSS Auto Rod Withdrawal Question

How many of us with Westinghouse NSSS systems have defeated the Auto Rod withdrawal function (NOT Auto Insertion)???

For those that have defeated this function was it driven by reactivity management concerns or Power Uprate issues???

Thanks in advance for your responses

Regards

Hugh McKenney Dominion Resources Services, Inc. Reactor Engineering Supervisor Phone: 8-759-2359 or 860 447-1791 x2359 Email: Hugh_E_McKenney@Dom.com

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