ML061880205
| ML061880205 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 06/29/2006 |
| From: | Korsnick M Constellation Energy Group |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| GL-04-002, TAC MC4687 | |
| Download: ML061880205 (3) | |
Text
Maria Korsnlck R.E. Ginna Nuclear Power Plant, LLC Site Vice President 1503 Lake Road Ontario, New York 14519-9364 585.771.3494 585.771.3943 Fax maria.korsnick@ constellation.com 0Constellation Energy, Generation Group June 29, 2006 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
Document Control Desk
SUBJECT:
R.E. Ginna Nuclear Power Plant Docket No. 50-244 Update of Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors (TAC No. MC4687)
In Reference (a) the Nuclear Regulatory Commission requested that pressurized water reactors evaluate the Emergency Core Cooling System and Containment Spray System recirculation functions and, if appropriate, take additional actions to ensure system function. In References (b) through (d), R.E. Ginna provided information concerning our plans for resolving the vulnerabilities identified in the Generic Letter. We noted in References (b) through (d) that we planned to install a dual-train self-cleaning active strainer device. As part of the ongoing project review process toward our implementation of the active strainers during the 2006 refueling outage, Constellation Energy performed a comprehensive assessment to determine the most favorable project success path, considering recent test results with the active strainer. The results of that assessment indicate that implementing a passive strainer is more likely to result in timely resolution of the vulnerabilities associated with this generic issue. Therefore, we have suspended project activities related to the active strainer including the necessary license amendment request, and are in the process of evaluating the procurement of a replacement passive strainer technology. We will provide additional updated information by August 1, 2006 with regards to planned compensatory measures and a potential scheduler exemption.
Should you have questions regarding this matter, please contact Mr. Robert Randall at (585) 771-3734, or robert.randall@constellation.com.
Very truly yours, Mary G. Korsnick ho0b/6 901",
Document Control Desk June 29, 2006 Page 2 STATE OF NEW YORK COUNTY OF WAYNE
- TO WIT:
I, Mary G. Korsnick, being duly sworn, state that I am Vice President - R.E. Ginna Nuclear Power Plant, LLC (Ginna LLC), and that I am duly authorized to execute and file this request on behalf of Ginna LLC.
To the best of my knowledge and belief, the statements contained in this document are true and correct.
To the extent that these statements are not based on my personal knowledge, they are based upon information provided by other Ginna LLC employees and/or consultants. Such information has been reviewed in accordance with company practice and I believe it to be reliable.
L2ULkb Subscribed and sworn before me a Notary Public in and for the State of New York and County of
_"____)*&_7_5__
this,,..dayof 2006.
7 WITNESS my Hand and Notarial Seal:
- My Commission Expires:
Notary Public SHARON L MILLER Wafy Pubk, State of New York RP*asbwai No. 0IM16017755 Mom"e Co%
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REFERENCES:
(a)
NRC Generic Letter 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors," dated September 13, 2004 (b)
Letter from Mary G. Korsnick (Ginna LLC) to Donna M. Skay (NRC), dated March 7, 2005, 90 Day Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation during Design Basis Accidents at Pressurized-Water Reactors (c)
Letter from Mary G. Korsnick (Ginna LLC) to Document Control Desk (NRC), dated July 15, 2005, Response to NRC Request for Additional Information Re: NRC Generic Letter 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation during Design Basis Accidents at Pressurized-Water Reactors" (d)
Letter from Mary G. Korsnick (Ginna LLC) to Document Control Desk (NRC), dated August 3 1, 2005, Response to NRC Generic Letter 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors"
Document Control Desk June 29, 2006 Page 3 cc:
S. J. Collins, NRC P. D. Milano, NRC Resident Inspector, NRC J. P. Spath, NYSERDA P. Eddy, NYS Dept. of Public Services