ML101230051

Generic Ltr. 2004-02 Supplemental Response (TAC MC4684 and MC4685)

ML101230051
Person / Time
Site:	Farley
Issue date:	05/05/2010
From:	Martin R Plant Licensing Branch II
To:	Ajluni M Southern Nuclear Operating Co
martin r E, NRR/DORL/LPL2-1, 415-1493
References
TAC MC4684, TAC MC4685
Download: ML101230051 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 May 5,2010 Mr. Mark J. Ajluni Manager, Nuclear Licensing Southern Nuclear Operating Company, Inc 40 Inverness Center Parkway Post Office Box 1295 Birmingham, AL 35201

SUBJECT:

JOSEPH M. FARLEY NUCLEAR PLANT UNITS 1AND 2 - GENERIC LEDER 2004-02 SUPPLEMENTAL RESPONSE (TAC NOS. MC4684 AND MC4685)

Dear Mr. Ajluni:

By letters dated February 28, April 29, and December 17, 2008; July 27,2009; and March 30, 2010; Southern Nuclear Operating Company (SNC) submitted supplemental responses to Generic Letter (GL) 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation during Design Basis Accidents at Pressurized-Water Reactors," for Joseph M. Farley Nuclear Plant (FNP), Units 1 and 2. We have reviewed your submittals with a process that involved a detailed review by a team of 10 subject matter experts, with focus on the review areas described in the U.S. Nuclear Regulatory Commission's (NRC's) "Content Guide for Generic Letter 2004-02 Supplemental Responses" (Agencywide Documents Access and Management System (ADAMS) Accession No. ML073110389). The review process also included a separate review of your submittal informed by inputs from the subject matter experts that focused on whether you have demonstrated overall that your corrective actions for GL 2004-02 are adequate.

The NRC staff has no further questions for FNP at this time regarding completion of corrective actions for GL 2004-02. This conclusion is based on the NRC staffs evaluation of your submittals, with emphasis on your responses to an NRC staff request for additional information dated March 9, 2009.

As you may be aware, we have not yet issued a final safety evaluation (SE) on WCAP-16793-NP, "Evaluation of Long-Term Cooling Considering Particulate, Fibrous, and Chemical Debris in the Recirculating Fluid." The NRC staff has reviewed the GL 2004-02 submittals for FNP and determined that SNC currently intends to rely on the conclusions reached in WCAP-16793-NP. Assuming disposition ofWCAP-16793-NP results in NRC staff issuance of an SE, the NRC intends to send a letter requesting that SNC confirm whether it still intends to rely on the conclusions reached in WCAP-16793-NP for FNP. In addition, the letter will likely request a response within 60 days describing, (1) the means SNC used to determine the amount of debris that bypasses the emergency core cooling system strainer, (2) the fiber loading expected per fuel assembly for the cold-leg and hot-leg break scenarios based on information available as of the date of the letter, (3) the available head loss margins with bases for the cold-leg and hot-leg break scenarios using the WCAP-16793 acceptance criteria, and (4)

SNC's planned actions for FI\lP should it exceed an acceptance criterion. The I\IRC staff will

M. Ajluni -2 notify you of the expected timeline for any needed actions at the time the SE is issued, or will notify you of expectations for additional licensee actions should an SE not be issued. We are not requesting any information from SNC on this subject at this time.

If you have any further questions on this matter, please contact me at 301-415-1493.

Sincerely, i

/Uf)J(~~v Robert Martin, Senior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-348 and 50-364 cc: Distribution via ListServ

M. Ajluni -2 notify you of the expected timeline for any needed actions at the time the SE is issued, or will notify you of expectations for additional licensee actions should an SE not be issued. We are not requesting any information from SNC on this subject at this time.

If you have any further questions on this matter, please contact me at 301-415-1493.

Sincerely, IRA!

Robert Martin, Senior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-348 and 50-364 cc: Distribution via ListServ DISTRIBUTION PUBLIC LPLlI-1 RtF RidsAcrsAcnw_MailCTR Resource RidsNrrLASRohrer Resource RidsRgn2MailCenter Resource RidsNrrPMFarleyResource RidsNrrDorlDpr Resource RidsNrrDorlLpl2-1 Resource RidsOgcRp Resource RidsNrrDssSsib Resource ADAMS Accession No ML101230051 OFFICE NRR/LPL2-1/PM NRR/LPL2-1/LA NRR/SSIB/BC NRR/LPL2-1/BC NAME RMartin SRohrer MScott GKulesa (JStang for)

DATE 05/04/10 05/03/10 05/04/10 05/05/10 OFFICIAL RECORD COpy