ML11119A138

Withdrawal of Commitments Regarding Generic Letter 2004-02

ML11119A138
Person / Time
Site:	Calvert Cliffs
Issue date:	04/28/2011
From:	Gellrich G H Calvert Cliffs
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
GL-04-002
Download: ML11119A138 (2)

Text

George H. Gellrich Calvert Cliffs Nuclear Power Plant, LLC Vice President 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410.495.5200 410.495.3500 Fax CENG.a joint venture of Constellation heD O '"eDF CALVERT CLIFFS NUCLEAR POWER PLANT April 28, 2011 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:

Document Control Desk

SUBJECT:

Calvert Cliffs Nuclear Power Plant Unit Nos. 1 & 2; Docket Nos. 50-317 & 50-318 Withdrawal of Commitments Regarding Generic Letter 2004-02

REFERENCES:

(a) Letter from G. H. Gellrich (CCNPP) to Document Control Desk (NRC), dated December 30 2010, Supplemental Information Regarding Generic Letter 2004-02 (b) Memo from A. L. Vietti-Cook (NRC) to R. W. Borchardt (NRC), dated December 23, 2010, Staff Requirements

-SECY 10-0113 -Closure Options for Generic Safety Issue -191, Assessment of Debris Accumulation on Pressurized Water Reactor Sump Performance In Reference (a), we provided final plant modification commitments to bring both Calvert Cliffs Units into conformance with the latest successful strainer testing results. These commitments require substantial modifications to equipment and structures in the Containments, including insulation replacement.

Reference (b) noted that additional testing and analyses need to be completed regarding in-vessel effects to allow successful resolution of Generic Safety Issue-191.

According to Reference (b), the testing is expected to be complete by the end of 2011 and a path forward based on the test results is expected to be formulated by mid-year 2012. Given the timing of the completion of the tests and analyses, it would be prudent to defer further plant modification actions until the tests and analyses are complete.Therefore, we withdraw the commitments to perform the required field modifications described in Attachment (1) of Reference (a). Once an acceptable path forward is identified, weighing the safety U~L Document Control Desk April 28, 2011 Page 2 significance, occupational dose, and other relevant risk-informed considerations, we will determine appropriate Generic Safety Issue-191 resolution commitments.

Should you have questions regarding this matter, please contact Mr. Douglas E. Lauver at (410) 495-5219.Very truly yours, STATE OF MARYLAND COUNTY OF CALVERT: TO WIT: I, George H. Gelirich, being duly sworn, state that I am Vice President

-Calvert Cliffs Nuclear Power Plant, LLC (CCNPP), and that I am duly authorized to execute and file this response on behalf of CCNPP. 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 CCNPP employees and/or consultants.

Such information has been reviewed in accordance with company practice and I believe it to be reliable.Subscribed and sworn before me, a Notary Public in and for the State of Maryland and County of q ,t ,2011.tW /C 201 WITNEt'S*

my Hand and Notarial Seal: My Commission Expires: Da'te GHG/PSF/bjd cc: D. V. Pickett, NRC W. M. Dean, NRC Resident Inspector, NRC S. Gray, DNR