For Surry: If we drop more than one at power, we trip as well. If we drop only one, our TS allow us to look at hot channel factors further and (if we meet some conditions) continue operating with a dropped rod (happened in 2006 for 19 days). If a rod is dropped during a startup or physics testing, the reactor will be tripped. Following recovery of a dropped rod, the recovery is considered complete when the follow up test to verify that the rod is working properly is complete. So it wold depend on the failure.

Adina LaFrance

It's a healthy thing now and then to hang a question mark on the things you have long taken for granted. -Betrand Russell

Nuclear Analysis & Fuel
Reactor Engineer
Surry Power Station
Email: Adina.K.LaFrance@Dom.com
Phone: 757-365-2658
Pager #: 4290

"WILLETT, JOSEPH E" <jwillett@oppd.com>
Sent by: pwrrm@retaqs.com

11/04/2008 09:02 AM

Please respond to
PWR Reactivity Management <pwrrm@retaqs.com>

To	<pwrrm@retaqs.com>
cc
Subject	[Pwrrm] Definition of When Startup is Complete

FCS has two requirements regarding a dropped rod. First, if we drop more than one rod at power, we trip the reactor. Second, if we drop a single rod during startup, we trip the reactor. What we don't have is a definition of when startup is considered complete, with regards to a dropped rod.

Do other plants have similar requirements and do you have a definition of when startup is complete with regards to a dropped rod?

J. E. Willett

----------------------------------------------------

Joseph E. Willett, P.E.

Principal Reactor Engineer-Fuel

Nuclear Operations Division

E-mail: jwillett@oppd.com

Omaha Public Power District Phone: (402) 533-7213

Fort Calhoun Station Pager: (402) 561-3899

9610 Power Lane FAX: (402) 533-6747

Blair, NE 68008

Mail Station: FC-1-1 Plant

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