ML070160123

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 NRC/NRR/ADRO/DORL/LPLII-2
To:	Stall J Florida Power & Light Co
Moroney B, NRR/DORL, 415-3974
References
TAC MD1626
Download: ML070160123 (4)

Text

January 23, 2007 Mr. J. A. Stall Senior 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 LETTER 2006-03, 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 2 containment, 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 a comparison 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 trains located 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 Based on the above discussion, the NRC staff has concluded that your overall response to GL 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 Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-389 cc: See next page

ML070160123 OFFICE LPL2-2/PM LPL2-2/PM LPL2-2/LA AFPB/BC LPL2-2/BC(A)

NAME BMoroney BMozafari BClayton SWeerakkody MChernoff DATE 01/16/07 01/16/07 01/16/07 01/22/07 01/23/07 Mr. J. A. Stall ST. LUCIE PLANT Florida Power and Light Company cc:

Mr. William E. Webster Mr. Christopher R. Costanzo Vice President, Nuclear Operations Plant General Manager Florida Power & Light Company St. Lucie Nuclear Plant P.O. Box 14000 6351 South Ocean Drive Juno Beach, FL 33408-0420 Jensen Beach, Florida 34957 Senior Resident Inspector Mr. Terry Patterson St. Lucie Plant Licensing Manager U.S. Nuclear Regulatory Commission St. Lucie Nuclear Plant P.O. Box 6090 6351 South Ocean Drive Jensen Beach, Florida 34957 Jensen Beach, Florida 34957 Craig Fugate, Director Mark Warner, Vice President Division of Emergency Preparedness Nuclear Operations Support Department of Community Affairs Florida Power & Light Company 2740 Centerview Drive P.O. Box 14000 Tallahassee, Florida 32399-2100 Juno Beach, FL 33408-0420 M. S. Ross, Managing Attorney Mr. Rajiv S. Kundalkar Florida Power & Light Company Vice President - Nuclear Engineering P.O. Box 14000 Florida Power & Light Company Juno Beach, FL 33408-0420 P.O. Box 14000 Juno Beach, FL 33408-0420 Marjan Mashhadi, Senior Attorney Florida Power & Light Company Mr. J. Kammel 801 Pennsylvania Avenue, NW. Radiological Emergency Suite 220 Planning Administrator Washington, DC 20004 Department of Public Safety 6000 Southeast Tower Drive Mr. Douglas Anderson Stuart, Florida 34997 County Administrator St. Lucie County Mr. Bill Parks 2300 Virginia Avenue Operations Manager Fort Pierce, Florida 34982 St. Lucie Nuclear Plant 6351 South Ocean Drive Mr. William A. Passetti, Chief Jensen Beach, Florida 34957-2000 Department of Health Bureau of Radiation Control Mr. Seth B. Duston 2020 Capital Circle, SE, Bin #C21 Training Manager Tallahassee, Florida 32399-1741 St. Lucie Nuclear Plant 6351 South Ocean Drive Mr. Gordon L. Johnston Jensen Beach, Florida 34957-2000 Site Vice President St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957-2000