ML071010134
| ML071010134 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 04/03/2007 |
| From: | Morris J Duke Energy Carolinas, Duke Power Co |
| To: | Document Control Desk, NRC/NRR/ADRO |
| References | |
| Download: ML071010134 (3) | |
Text
PDuke Energy JAMES R. MORRIS Vice President Catawba Nuclear Station 4800 Concord Rd. / CN01 VP York, SC 29745-9635 803 831 4251 803 831 3221 fax April 3, 2007 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555-0001
SUBJECT:
Duke Power Company LLC d/b/a Duke Energy Carolinas, LLC.
Catawba Nuclear Station, Unit 1 and Unit 2 Docket Nos.: 50-413 and 50-414 Commitment Change Evaluation Report for 2006 Attached is a summary of commitment change evaluations completed during the 2006 calendar year for Catawba Nuclear Station. These evaluations and subsequent commitment changes were made based on the guidance defined in NEI 99-04, Guidelines for Managing NRC Commitments, and have no adverse effect on compliance with NRC rules and regulations.
Questions regarding this report should be directed to Kay Nicholson at 803.831.3237.
Sincerely, J. R. Morris Attachments www. duke-energy. corn PC) Il
Nuclear Regulatory Commission April 3, 2007 Page 2 xc:
W. D. Travers, Regional Administrator U. S. Nuclear Regulatory Commission, Region II Sam Nunn Atlanta Federal Center 23T85 61 Forsyth St., SW Atlanta, GA 30303 J. F. Stang, Jr. (Addressee only)
U. S. Nuclear Regulatory Commission Mail Stop 0-8 H4A Washington, DC 20555-0001 A. T. Sabisch NRC Senior Resident Inspector (CNS)
CN01NC
Catawba Nuclear Station Annual Commitment Change Summary Report for 2006 Dockets Nos. 50-413 and 50-414 NRC Notification Number Source Document Original Commitment Modified Commitment Required Yes 2006-C-001 11/05/2005 letter from Duke to NRC with license amendment request on 14-day nuclear service water (RN) allowed outage time Diesel generator jacket water heat exchanger - A temporary engineering change will be installed on each train of emergency diesel generators (EDG) on both units to maintain the technically inoperable EDG capable of being manually started with the normal nuclear service water system (NSWS) piping is out of service. This will be accomplished by using the fire protection system.
This commitment is being changed for clarity to indicate that finite time periods are required for connecting and disconnecting the temporary cooling water supply system. The following statement should have been included in the 11/05/2005 letter: The only times that the temporary cooling provision will not be available during the NSWS header outages are when it is being physically connected or disconnected.
Original wording of commitment lacked clarity. Probabilistic Risk Assessment evaluated the impact of not having the temporary cooling provision available during connection and disconnection and the impact of the risk result was negligible.