ML070390135
| ML070390135 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 01/31/2007 |
| From: | Morris J Duke Energy Carolinas |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| GL-04-002 | |
| Download: ML070390135 (5) | |
Text
Duk JAMES R. MORRIS Vice President Catawba Nuclear Station 4800 Concord Rd. / CNO1VP York, SC 29745-9635 803 831 4251 803 831 3221 fax January 31, 2007 U.
S.
Nuclear Regulatory Commission Washington, DC 20555-0001 ATTENTION: Document Control Desk
Subject:
Duke Power Company LLC d/b/a Duke Energy Carolinas, LLC Catawba Nuclear Station, Units 1 and 2 Docket Nos.
50-413, 50-414 NRC Generic Letter (GL) 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors, Commitment Change Request November 1, 2006 Letter concerning NRC Generic Letter (GL) 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors, Request for Relief from December 31, 2007 Implementation
References:
On November 1, 2006 Duke Energy Carolinas (Duke) requested relief from the December 31, 2007 date for resolution of GSI-191 for Catawba Unit 1 and the commitment noted in the September 1, 2005 GL 2004-02 response letter to install a modified sump strainer and support structure in Unit 1 during the Fall 2006 outage.
The letter requested a new License Condition be added to the Facility Operating License to require Unit 1 to enter Mode 5 for the outage to install the sump strainer modification no later than May 19, 2008.
Duke also requested the addition of a License Condition to the Facility Operating License which states that the Unit 1 sump strainer modification would be complete prior to entry into Mode 4 after May 19, 2008.
The commitment to install the modified sump strainer and support structure in Unit 2 during the Fall 2007 outage remained unchanged.
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www. duke-energy. com
U. S. Nuclear Regulatory Commission January 31, 2007 Page 2 One of the commitments made in the November 1, 2006 letter was the following:
Duke will evaluate the need for a trash rack on the ECCS sump strainer and submit a license amendment, if required, by 2/1/2007.
Upon completion of the evaluation and discussions with the Office of Nuclear Reactor Regulation Project Manager and the reviewers, it was determined that a Technical Specification and Bases revision would be required.
In addition, a clarification of the site's commitments to Regulatory Guide 1.82, Rev. 0, "Sumps for Emergency Core Cooling and Containment Spray Systems" would be necessary to support the installation of the new sump strainer assembly.
As a result, Duke is requesting a new date of March 31, 2007 for submittal of the license amendment request. contains a list of commitments made as a result of this letter.
If any questions arise or additional information is needed, please contact Tony Jackson at (803) 831:-3742.
Very truly yours, James RMorris Attachment
U.
S.
Nuclear Regulatory Commission January 31, 2007 Page 3 James R.
Morris affirms that he is the person who subscribed his name to the foregoing statement, and that all the matters and facts set forth herein are true and correct to the best of his knowledge.
James R Morris Vice President Subscribed and sworn to me:
/5_/__
Date No'6ary bc My commission expires:
Date SEAL
U.
S. Nuclear Regulatory Commission January 31, 2007 Page 4 xc: w/attachments W. D. Travers, Region II Administrator U.S. Nuclear Regulatory Commission Sam Nunn Atlanta Federal Center, 23 T85 61 Forsyth St.,
- Atlanta, GA 30303-8931 J.
F. Stang, Jr., Senior Project Manager (CNS & MNS)
U.
S. Nuclear Regulatory Commission 11555 Rockville Pike Mail Stop 0-8 H 4A Rockville, MD 20852-2738 A.
T.
Sabisch NRC Senior Resident Inspector Catawba Nuclear Station H. J.
Porter, Assistant Director Division of Radioactive Waste Management Bureau of Land and Waste Management Department of Health and Environmental Control 2600 Bull Street
- Columbia, SC 29201 Commitment List Duke will submit an amendment to eliminate trash racks and clarify other Regulatory Guide 1.82, Rev.0 specified criterion for the new ECCS sump strainer assemblies for Catawba no later than March 31, 2007.
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