ML070160123

St. Lucie, Unit 2 - Evaluation of Response to Generic Letter 2006-03, Potentially Nonconforming Hemyc and MT Fire Barrier Configurations

ML070160123
Person / Time
Site:	Saint Lucie
Issue date:	01/23/2007
From:	Mozafari B L NRC/NRR/ADRO/DORL/LPLII-2
To:	Stall J A Florida Power & Light Co
Moroney B T, NRR/DORL, 415-3974
References
TAC MD1626
Download: ML070160123 (4)

Text

January 23, 2007Mr. J. A. StallSenior Vice President, Nuclear and Chief Nuclear Officer Florida Power and Light Company P.O. Box 14000 Juno Beach, Florida 33408-0420

SUBJECT:

ST. LUCIE UNIT 2 - EVALUATION OF RESPONSE TO GENERIC LETTER2006-03, "POTENTIALLY NONCONFORMING HEMYC AND MT FIRE BARRIER CONFIGURATIONS" (TAC NO. MD1626)

Dear Mr. Stall:

The U.S. Nuclear Regulatory Commission (NRC) acknowledges the receipt of your response,dated June 9, 2006, to Generic Letter (GL) 2006-03, "Potentially Nonconforming Hemyc and MT Fire Barrier Configurations," as supplemented by letters dated September 20, and December 19, 2006. Your response states that Hemyc is used for raceway protection inside the St. Lucie Unit 2containment, where it is employed as a flame impingement shield and installed below the lowest tray in each stack of cable trays that contain redundant safe shutdown cables when 20-foot separation is not met on the 23-foot elevation. Following discussions with the NRC staff, your December 19, 2006, letter revised the initial response to state that the installation is outside the original licensing basis to provide a one-half hour fire rated barrier. You have stated that corrective actions are required to resolve the nonconforming condition and that you plan to examine corrective actions associated with the Hemyc installation as part of the St. Lucie transition to NFPA 805. You have previously indicated your intent to transition the St. Lucie site to NFPA 805 in a letter dated December 22, 2005.You have stated that further compensatory measures have not been implemented based on acomparison with the similar configuration that exists at St. Lucie Unit 1, where there are no flame impingement shields or radiant energy shields installed beneath certain cable trays inside containment and where the NRC has granted an exemption from providing any additional protection.Your response also states that other fire barriers that separate redundant safe shutdown trainslocated within the same fire area have been designed and installed in accordance with current NRC guidance. The basis for stating that other fire barriers have been designed and installed in accordance with current NRC guidance should be maintained on site, and will be subject to inspection during the normal NRC inspection process.

J. Stall-2-Based on the above discussion, the NRC staff has concluded that your overall response toGL 2006-03 for St. Lucie Unit 2 is acceptable. If you have any questions regarding this matter, please contact me at (301) 415-2020.Sincerely,/RA/Brenda L. Mozafari, Senior Project ManagerPlant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket No. 50-389 cc: See next page

ML070160123 OFFICELPL2-2/PMLPL2-2/PMLPL2-2/LAAFPB/BCLPL2-2/BC(A)NAMEBMoroneyBMozafariBClaytonSWeerakkodyMChernoff DATE01/16/0701/16/0701/16/0701/22/0701/23/07 Mr. J. A. StallST. LUCIE PLANTFlorida Power and Light Company cc:Mr. William E. Webster Vice President, Nuclear Operations Florida Power & Light Company P.O. Box 14000 Juno Beach, FL 33408-0420 Senior Resident Inspector St. Lucie Plant U.S. Nuclear Regulatory Commission P.O. Box 6090 Jensen Beach, Florida 34957 Craig Fugate, Director Division of Emergency Preparedness Department of Community Affairs 2740 Centerview Drive Tallahassee, Florida 32399-2100 M. S. Ross, Managing Attorney Florida Power & Light Company P.O. Box 14000 Juno Beach, FL 33408-0420

Marjan Mashhadi, Senior Attorney Florida Power & Light Company 801 Pennsylvania Avenue, NW.

Suite 220 Washington, DC 20004Mr. Douglas Anderson County Administrator St. Lucie County 2300 Virginia Avenue Fort Pierce, Florida 34982

Mr. William A. Passetti, Chief Department of Health Bureau of Radiation Control 2020 Capital Circle, SE, Bin #C21 Tallahassee, Florida 32399-1741Mr. Gordon L. Johnston Site Vice President St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957-2000Mr. Christopher R. CostanzoPlant General Manager St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957Mr. Terry PattersonLicensing Manager St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957Mark Warner, Vice PresidentNuclear Operations Support Florida Power & Light Company P.O. Box 14000 Juno Beach, FL 33408-0420Mr. Rajiv S. KundalkarVice President - Nuclear Engineering Florida Power & Light Company P.O. Box 14000 Juno Beach, FL 33408-0420Mr. J. KammelRadiological Emergency Planning Administrator Department of Public Safety 6000 Southeast Tower Drive Stuart, Florida 34997Mr. Bill ParksOperations Manager St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957-2000Mr. Seth B. DustonTraining Manager St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957-2000