ML13351A314: Difference between revisions

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{{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 December 20, 2013 To Those on the Enclosed List  
{{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 December 20, 2013 To Those on the Enclosed List


==SUBJECT:==
==SUBJECT:==
REQUEST FOR ADDITIONAL INFORMATION REGARDING RESPONSE TO BULLETIN 2012-01, "DESIGN VULNERABILITY IN ELECTRIC POWER SYSTEM" On July 27, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued Bulletin 2012-01, "Design Vulnerability in Electric Power System" (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12074A115), to all holders of operating licenses and combined licenses for nuclear power reactors.
REQUEST FOR ADDITIONAL INFORMATION REGARDING RESPONSE TO BULLETIN 2012-01, "DESIGN VULNERABILITY IN ELECTRIC POWER SYSTEM" On July 27, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued Bulletin 2012-01, "Design Vulnerability in Electric Power System" (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12074A115), to all holders of operating licenses and combined licenses for nuclear power reactors. In addition, Watts Bar Nuclear Plant, Unit 2, is addressing the issues identified in the bulletin as part of the licensing process.
In addition, Watts Bar Nuclear Plant, Unit 2, is addressing the issues identified in the bulletin as part of the licensing process. Bulletin 2012-01 requested information about each facility's electric power system designs, in light of recent operating experience involving the loss of one of the three phases of the offsite power circuit (single-phase open circuit condition) at Byron Station, Unit 2. On February 15, 2013, the NRC staff completed the review of licensee responses to the bulletin and issued a summary report (ADAMS Accession No. ML13052A711).
Bulletin 2012-01 requested information about each facility's electric power system designs, in light of recent operating experience involving the loss of one of the three phases of the offsite power circuit (single-phase open circuit condition) at Byron Station, Unit 2.
Since then, the NRC staff has held several public meetings with the industry to discuss the open phase issue and options for resolving it. On October 9, 2013, the Nuclear Energy Institute (NEI} submitted an industry initiative document (i.e., Strategy Paper) to support the resolution of the open phase issue described in Bulletin 2012-01 (ADAMS Accession No. ML13333A147).
On February 15, 2013, the NRC staff completed the review of licensee responses to the bulletin and issued a summary report (ADAMS Accession No. ML13052A711). Since then, the NRC staff has held several public meetings with the industry to discuss the open phase issue and options for resolving it.
The NEt document also addresses recent operating events involving loss of a single phase of electric power at the Bruce nuclear power plant in Canada and loss of two phases of electric power at the Forsmark, Unit 3, in Sweden. The initiative was approved by the NEI Nuclear Strategic Issues Advisory Committee and addresses all operating plants. The NRC staff is requesting additional information (enclosed) from licensees to verify that they have completed interim corrective actions and compensatory measures and to determine the status of each licensee's long-term corrective actions. Please provide a written response, signed under oath or affirmation, to the enclosed request for additional information by February 3, 2014.
On October 9, 2013, the Nuclear Energy Institute (NEI} submitted an industry initiative document (i.e., Strategy Paper) to support the resolution of the open phase issue described in Bulletin 2012-01 (ADAMS Accession No. ML13333A147). The NEt document also addresses recent operating events involving loss of a single phase of electric power at the Bruce nuclear power plant in Canada and loss of two phases of electric power at the Forsmark, Unit 3, in Sweden. The initiative was approved by the NEI Nuclear Strategic Issues Advisory Committee and addresses all operating plants.
et al. If you have any questions regarding this letter, please contact Tanya M. Mensah, Senior Project Manager, at 301-415-3610, or via email at Tanya.Mensah@nrc.gov.  
The NRC staff is requesting additional information (enclosed) from licensees to verify that they have completed interim corrective actions and compensatory measures and to determine the status of each licensee's long-term corrective actions. Please provide a written response, signed under oath or affirmation, to the enclosed request for additional information by February 3, 2014.
 
et al.                                         If you have any questions regarding this letter, please contact Tanya M. Mensah, Senior Project Manager, at 301-415-3610, or via email at Tanya.Mensah@nrc.gov.
Sincerely, Michele G. Evans, Director Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation


==Enclosures:==
==Enclosures:==
: 1. List of Addressees
: 1. List of Addressees
: 2. Request for Additional Information cc: Listserv Sincerely, Michele G. Evans, Director Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Arkansas Nuclear One Entergy Operations, Inc. Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6 Vice President, Operations Entergy Operations, Inc. Arkansas Nuclear One 1448 S.R. 333 Russellville, AR 72802 Beaver Valley Power Station FirstEnergy Nuclear Operating Co. Docket Nos. 50-334 and 50-412 License Nos. DPR-66 and NPF-73 Mr. Eric A. Larson Site Vice President LIST OF ADDRESSEES FirstEnergy Nuclear Operating Company P.O. Box 4, Route 168 Shippingport, PA 15077 Braidwood Station Exelon Generation Co., LLC Docket Nos. STN 50-456 and STN 50-457 License Nos. NPF-72 and NPF-77 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Browns Ferry Nuclear Plant Tennessee Valley Authority Docket Nos. 50-259, 50-260 and 50-296 License Nos. DPR-33, DPR-52 and DPR-68 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street, LP 3D-C Chattanooga, TN 37402-2801 Brunswick Steam Electric Plant Carolina Power & Light Co. Docket Nos. 50-325 and 50-324 Enclosure 1
: 2. Request for Additional Information cc: Listserv
License Nos. DPR-71 and DPR-62 Mr. Michael J. Annacone Vice President Carolina Power & Light Company Brunswick Steam Electric Plant P. 0. Box 10429 Southport, NC 28461 Byron Station Exelon Generation Co., LLC Docket Nos. STN 50-454 and STN 50-455 License Nos. NPF-37 and NPF-66 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Callaway Plant Union Electric Company Docket No. 50-483 License No. NPF-30 Mr. Adam C. Heflin Senior Vice President and Chief Nuclear Officer Union Electric Company Ameren Missouri P.O. Box 620 Fulton, MO 65251 Calvert Cliffs Nuclear Power Plant Calvert Cliffs Nuclear Power Plant, LLC Docket Nos. 50-317 and 50-318 License Nos. DPR-53 and DPR-69 Mr. George H. Gellrich Vice President Calvert Cliffs Nuclear Power Plant, LLC Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702 Catawba Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-413 and 50-414 License Nos. NPF-35 and NPF-52 Mr. Kelvin Henderson Site Vice President Duke Energy Carolinas, LLC Catawba Nuclear Station 4800 Concord Road York, SC 29745 Clinton Power Station Exelon Generation Co., LLC Docket No. 50-461 License No. NPF-62 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Columbia Generating Station Energy Northwest Docket No. 50-397 License No. NPF-21 Mr. Mark E. Reddemann Chief Executive Officer Energy Northwest MD 1023 North Power Plant Loop P.O. Box 968 Richland, WA 99352 Comanche Peak Nuclear Power Plant Luminant Generation Co., LLC Docket Nos. 50-445 and 50-446 License Nos. NPF-87 and NPF-89 Mr. Rafael Flores Senior Vice President and Chief Nuclear Officer Luminant Generation Company, LLC Attn: Regulatory Affairs P.O. Box 1002 Glen Rose, TX 76043 Cooper Nuclear Station Nebraska Public Power District Docket No. 50-298 License No. DPR-46 Mr. Oscar A Limpias Vice President Nuclear and Chief Nuclear Officer Nebraska Public Power District Cooper Nuclear Station 72676 648A Avenue P.O. Box 98 Brownville, NE 68321 Davis-Besse Nuclear Power Station FirstEnergy Nuclear Operating Co. Docket No. 50-346 License No. NPF-3 Mr. Ray Lieb Site Vice President FirstEnergy Nuclear Operating Company c/o Davis-Besse NPS 5501 N. State Route 2 Oak Harbor, OH 43449-9760 Diablo Canyon Power Plant Pacific Gas & Electric Co. Docket Nos. 50-275 and 50-323 License Nos. DPR-80 and DPR-82 Mr. Edward D. Halpin Senior Vice President and Chief Nuclear Officer Pacific Gas and Electric Company P.O. Box 56 Mail Code 104/6 Avila Beach, CA 93424 Donald C. Cook Nuclear Plant Indiana Michigan Power Company Docket Nos. 50-315 and 50-316 License Nos. DPR-58 and DPR-7 4 Mr. Lawrence J. Weber Senior Vice President and Chief Nuclear Officer Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, Ml 49106 Dresden Nuclear Power Station Exelon Generation Co., LLC Docket Nos. 50-237 and 50-249 License Nos. DPR-19 and DPR-25 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Duane Arnold Energy Center NextEra Energy Duane Arnold, LLC Docket No. 50-331 License No. DPR-49 Mr. Rich Anderson Site Vice President NextEra Energy Duane Arnold Energy Center 3277 DAEC Road Palo, lA 52324-9785 Edwin I. Hatch Nuclear Plant Southern Nuclear Operating Co. Docket Nos. 50-321 and 50-366 License Nos. DPR-57 and NPF-5 Mr. C.R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc. P.O. Box 1295/BIN B038 Birmingham, AL 35201-1295 Fermi Detroit Edison Co. Docket No. 50-341 License No. NPF-43 Mr. Joseph H. Plona Senior Vice President and Chief Nuclear Officer Detroit Edison Company Fermi 2-210 NOC 6400 North Dixie Highway Newport, Ml 48166 Fort Calhoun Station Omaha Public Power District Docket No. 50-285 License No. DPR-40 Mr. Louis Cortopassi Vice President and Chief Nuclear Officer Omaha Public Power District Fort Calhoun Station Mail Stop FC-2-4 961 0 Power Lane Blair, NE 68008 Grand Gulf Nuclear Station Entergy Operations, Inc. Docket No. 50-416 License No. NPF-29 Vice President, Operations Entergy Operations, Inc. Grand Gulf Nuclear Station P.O. Box 756 Port Gibson, MS 39150 H. B. Robinson Steam Electric Plant Carolina Power & Light Co. Docket No. 50-261 License No. DPR-23 Mr. William R. Gideon Vice President H.B. Robinson Steam Electric Plant Carolina Power & Light Company 3581 West Entrance Road Hartsville, SC 29550 Hope Creek Generating Station PSEG Nuclear, LLC Docket No. 50-354 License No. NPF-57 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC -N09 P. 0. Box 236 Hancocks Bridge, NJ 08038 Indian Point Energy Center Entergy Nuclear Operations, Inc. Docket Nos. 50-247 and 50-286 License Nos. DPR-26 and DPR-64 Vice President, Operations Entergy Nuclear Operations, Inc. Indian Point Energy Center 450 Broadway, GSB P.O. Box 249 Buchanan, NY 10511-0249 James A. FitzPatrick Nuclear Power Plant Entergy Nuclear Operations, Inc. Docket No. 50-333 License No. DPR-59 Chris Adner, Licensing Manager Entergy Nuclear Operations, Inc. James A. FitzPatrick Nuclear Power Plant P.O. Box 110 Lycoming, NY 13093 Joseph M. Farley Nuclear Plant Southern Nuclear Operating Co. Docket Nos. 50-348 and 50-364 License Nos. NPF-2 and NPF-8 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc. P.O. Box 1295/Bin 038 Birmingham, AL 35201-1295 LaSalle County Station Exelon Generation Co., LLC Docket Nos. 50-373 and 50-37 4 License Nos. NPF-11 and NPF-18 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Limerick Generating Station Exelon Generation Co., LLC Docket Nos. 50-352 and 50-353 License Nos. NPF-39 and NPF-85 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Millstone Nuclear Power Station Dominion Nuclear Connecticut, Inc. Docket Nos. 50-336 and 50-423 License Nos. DPR-65 and NPF-49 Mr. David A. Heacock President and Chief Nuclear Officer Virginia Electric & Power Company lnnsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Monticello Nuclear Generating Plant Northern States Power Company Docket No. 50-263 License No. DPR-22 Mr. Mark A. Schimmel Site Vice President Northern States Power Company -Minnesota Monticello Nuclear Generating Plant 2807 West County Road 75 Monticello, MN 55362-9637 Nine Mile Point Nuclear Station Nine Mile Point Nuclear Station, LLC Docket Nos. 50-220 and 50-410 License Nos. DPR-63 and NPF-69 Mr. Christopher Costanzo Vice President Nine Mile Point Nine Mile Point Nuclear Station, LLC P. 0. Box 63 Lycoming, NY 13093 North Anna Power Station Virginia Electric & Power Co. Docket Nos. 50-338 and 50-339 License Nos. NPF-4 and NPF-7 Mr. David A. Heacock President and Chief Nuclear Officer Virginia Electric & Power Compay lnnsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Oconee Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-269, 50-270 and 50-287 License Nos. DPR-38, DPR-47 and DPR-55 Mr. Scott Batson Vice President, Oconee Nuclear Station Duke Energy Carolinas, LLC 7800 Rochester Highway Seneca, SC 29672 Oyster Creek Nuclear Generating Station Exelon Generation Co., LLC Docket No. 50-219 License No. DPR-16 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Palisades Nuclear Plant Entergy Nuclear Operations, Inc. Docket No. 50-255 License No. DPR-20 Vice President, Operations Entergy Nuclear Operations, Inc. Palisades Nuclear Plant 27780 Blue Star Memorial Highway Covert, Ml 49043-9530 Palo Verde Nuclear Generating Station Arizona Public Service Company Docket Nos. STN 50-528, STN 50-529 and STN 50-530 License Nos. NPF-41, NPF-51 and NPF-7 4 Mr. Randall K. Edington Executive Vice President Nuclear and Chief Nuclear Officer Arizona Public Service Co. P.O. Box 52034, MS 7602 Phoenix, AZ 85072-2034 Peach Bottom Atomic Power Station Exelon Generation Co., LLC Docket Nos. 50-277 and 50-278 License Nos. DPR-44 and DPR-56 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Perry Nuclear Power Plant FirstEnergy Nuclear Operating Co. Docket No. 50-440 License No. NPF-58 Mr. Vito A. Kaminskas Site Vice President
 
-Nuclear -Perry FirstEnergy Nuclear Operating Company Perry Nuclear Power Plant 1 0 Center Road, A290 Perry, OH 44081 Pilgrim Nuclear Power Station Unit No. 1 Entergy Nuclear Operations, Inc. Docket No. 50-293 License No. DPR-35 Mr. John Dent, Jr. Vice President and Site Vice President Entergy Nuclear Operations, Inc. Pilgrim Nuclear Power Station 600 Rocky Hill Road Plymouth, MA 02360-5508 Point Beach Nuclear Plant NextEra Energy Point Beach, LLC Docket Nos. 50-266 and 50-301 License Nos. DPR-24 and DPR-27 Mr. Larry Meyer Site Vice President NextEra Energy Point Beach, LLC Point Beach Nuclear Plant, Units 1 & 2 6610 Nuclear Road Two Rivers, WI 54241-9516 Prairie Island Nuclear Generating Plant Northern States Power Co. Minnesota Docket Nos. 50-282 and 50-306 License Nos. DPR-42 and DPR-60 Mr. James E. Lynch Site Vice President Northern States Power Company -Minnesota Prairie Island Nuclear Generating Plant 1717 Wakonade Drive East Welch, MN 55089-9642 Quad Cities Nuclear Power Station Exelon Generation Co., LLC Docket Nos. 50-254 and 50-265 License Nos. DPR-29 and DPR-30 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 R. E. Ginna Nuclear Power Plant R.E. Ginna Nuclear Power Plant, LLC Docket No. 50-244 License No. DPR-18 Mr. Joseph E. Pacher Vice President R.E. Ginna Nuclear Power Plant, LLC R. E. Ginna Nuclear Power Plant 1503 Lake Road Ontario, NY 14519 River Bend Station Entergy Operations, Inc. Docket No. 50-458 License No. NPF-47 Vice President, Operations Entergy Operations, Inc. River Bend Station 5485 U.S. Highway 61N St. Francisville, LA 70775 Salem Nuclear Generating Station PSEG Nuclear, LLC. Docket Nos. 50-272 & 50-311 License Nos. DPR-70 and DPR-75 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC -N09 P. 0. Box 236 Hancocks Bridge, NJ 08038 Seabrook Nuclear Plant NextEra Energy Seabrook, LLC Docket No 50-443 License No. NFP-86 Mr. Kevin Walsh Vice President, Seabrook Nuclear Plant c/o Mr. Michael Ossing NextEra Energy Seabrook, LLC P.O. Box 300 Seabrook, NH 0387 4 Sequoyah Nuclear Plant Tennessee Valley Authority Docket Nos. 50-327 and 50-328 License Nos. DPR-77 and DPR-79 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street LP 3D-C Chattanooga, TN 37 402-2801 Shearon Harris Nuclear Power Plant Carolina Power & Light Co. Docket No. 50-400 License No. NPF-63 Mr. George T. Hamrick Vice President Carolina Power and Light Company Shearon Harris Nuclear Power Plant P. 0. Box 165, Mail Zone 1 New Hill, NC 27562-0165 South Texas Project STP Nuclear Operating Co. Docket Nos. 50-498 and 50-499 License Nos. NPF-76 and NPF-80 Mr. Dennis L. Koehl President and CEO/CNO STP Nuclear Operating Company South Texas Project Electric Generating Station P.O. Box 289 Wadsworth, TX 77483 St. Lucie Plant Florida Power & Light Co. Docket Nos. 50-335 and 50-389 License Nos. DPR-67 and NPF-16 Mr. Mano Nazar Executive Vice President and Chief Nuclear Officer NextEra Energy 700 Universe Boulevard P. 0. Box 14000 Juno Beach, FL 33408-0420 Surry Power Station Virginia Electric & Power Co. Docket Nos. 50-280 and 50-281 License Nos. DPR-32 and DPR-37 Mr. David A. Heacock President and Chief Nuclear Officer Dominion Nuclear lnnsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Susquehanna Steam Electric Station PPL Susquehanna, LLC Docket Nos. 50-387 and 50-388 License Nos. NPF-14 and NPF-22 Mr. Timothy S. Rausch Senior Vice President and Chief Nuclear Officer PPL Susquehanna, LLC 769 Salem Boulevard NUCSB3 Berwick, PA 18603-0467 Three Mile Island, Unit 1 Exelon Nuclear Docket No. 50-289 License No. DPR-50 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Turkey Point Florida Power and Light Co. Docket Nos. 50-250 and 50-251 License Nos. DPR-31 and DPR-41 Mr. Mano Nazar Executive Vice President and Chief Nuclear Officer NextEra Energy 700 Universe Boulevard P.O. Box 14000 Juno Beach, FL 33408-0420 Vermont Yankee Nuclear Power Station Entergy Nuclear Operations, Inc. Docket No. 50-271 License No. DPR-28 Site Vice President Entergy Nuclear Operations, Inc. Vermont Yankee Nuclear Power Station P.O. Box 250, Governor Hunt Road Vernon, VT 05354 Virgil C. Summer Nuclear Station South Carolina Electric & Gas Co. Docket No. 50-395 License No. NPF-12 Mr. Thomas D. Gatlin Vice President Nuclear Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station P.O. Box 88, Mail Code 800 Jenkinsville, SC 29065 Vogtle Electric Generating Plant Southern Nuclear Operating Co. Docket Nos. 50-424 and 50-425 License Nos. NPF-68 and NPF-81 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc. P.O. Box 1295/Bin 038 Birmingham, AL 35201-1295 Waterford Steam Electric Station Entergy Operations, Inc. Docket No. 50-382 License No. NPF-38 Vice President, Operations Entergy Operations, Inc. Waterford Steam Electric Station, Unit 3 17265 River Road Killona, LA 70057-0751 Watts Bar Nuclear Plant. Unit 1 Tennessee Valley Authority Docket No. 50-390 License No. NPF-9 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street, LP 3D-C Chattanooga, TN 37402-2801 Watts Bar Nuclear Plant. Unit 2 Tennessee Valley Authority Docket No. 50-391 Construction Permit No. CPPR No. 092 Mr. Michael D. Skaggs Senior Vice President, Nuclear Construction Tennessee Valley Authority Lookout Place 6A 1101 Market Street Chattanooga, TN 37402-2801 William B. McGuire Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-369 and 50-370 License Nos. NPF-9 and NPF-17 Mr. Steven D. Capps Vice President Duke Energy Carolinas, LLC McGuire Nuclear Station 12700 Hagers Ferry Road Huntersville, NC 28078-8985 Wolf Creek Generating Station Wolf Creek Nuclear Operating Corp. Docket No. 50-482 License No. NPF-42 Mr. Matthew W. Sunseri President and Chief Executive Officer Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839 REQUEST FOR ADDITIONAL INFORMATION FOR BULLETIN 2012-01, "DESIGN VULNERABILITY IN ELECTRIC POWER SYSTEM" On July 27, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued Bulletin 2012-01, "Design Vulnerability in Electric Power System" (Agencywide Documents Access and Management System Accession No. ML12074A115), to all holders of operating licenses and combined licenses for nuclear power reactors.
LIST OF ADDRESSEES Arkansas Nuclear One Entergy Operations, Inc.
In addition, Watts Bar Nuclear Plant, Unit 2, is addressing the issues identified in the bulletin as part of the licensing process. Bulletin 2012-01 requested information about each facility's electric power system designs, in light of recent operating experience involving the loss of one of the three phases of the offsite power circuit (single-phase open circuit condition) at Byron Station, Unit 2. In order for the NRC staff to complete its review of responses to the bulletin, the following additional information is requested:
Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6 Vice President, Operations Entergy Operations, Inc.
: 1. Provide a summary of all interim corrective actions that have been taken since the January 30, 2012, event at Byron Station, Unit 2, to ensure that plant operators can promptly diagnose and respond to open phase conditions on the offsite power circuits for Class-1 E vital buses until permanent corrective actions are completed.
Arkansas Nuclear One 1448 S.R. 333 Russellville, AR 72802 Beaver Valley Power Station FirstEnergy Nuclear Operating Co.
: 2. Provide a status and schedule for completion of plant design changes and modifications to resolve issues with an open phase of electric power. Enclosure 2
Docket Nos. 50-334 and 50-412 License Nos. DPR-66 and NPF-73 Mr. Eric A. Larson Site Vice President FirstEnergy Nuclear Operating Company P.O. Box 4, Route 168 Shippingport, PA 15077 Braidwood Station Exelon Generation Co., LLC Docket Nos. STN 50-456 and STN 50-457 License Nos. NPF-72 and NPF-77 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Browns Ferry Nuclear Plant Tennessee Valley Authority Docket Nos. 50-259, 50-260 and 50-296 License Nos. DPR-33, DPR-52 and DPR-68 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street, LP 3D-C Chattanooga, TN 37402-2801 Brunswick Steam Electric Plant Carolina Power & Light Co.
et al. If you have any questions regarding this letter, please contact Tanya M. Mensah, Senior Project Manager, at 301-415-3610, or via email at Tanya.Mensah@nrc.gov.
Docket Nos. 50-325 and 50-324 Enclosure 1
 
License Nos. DPR-71 and DPR-62 Mr. Michael J. Annacone Vice President Carolina Power & Light Company Brunswick Steam Electric Plant P. 0. Box 10429 Southport, NC 28461 Byron Station Exelon Generation Co., LLC Docket Nos. STN 50-454 and STN 50-455 License Nos. NPF-37 and NPF-66 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Callaway Plant Union Electric Company Docket No. 50-483 License No. NPF-30 Mr. Adam C. Heflin Senior Vice President and Chief Nuclear Officer Union Electric Company Ameren Missouri P.O. Box 620 Fulton, MO 65251 Calvert Cliffs Nuclear Power Plant Calvert Cliffs Nuclear Power Plant, LLC Docket Nos. 50-317 and 50-318 License Nos. DPR-53 and DPR-69 Mr. George H. Gellrich Vice President Calvert Cliffs Nuclear Power Plant, LLC Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702


==Enclosures:==
Catawba Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-413 and 50-414 License Nos. NPF-35 and NPF-52 Mr. Kelvin Henderson Site Vice President Duke Energy Carolinas, LLC Catawba Nuclear Station 4800 Concord Road York, SC 29745 Clinton Power Station Exelon Generation Co., LLC Docket No. 50-461 License No. NPF-62 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Columbia Generating Station Energy Northwest Docket No. 50-397 License No. NPF-21 Mr. Mark E. Reddemann Chief Executive Officer Energy Northwest MD 1023 North Power Plant Loop P.O. Box 968 Richland, WA 99352 Comanche Peak Nuclear Power Plant Luminant Generation Co., LLC Docket Nos. 50-445 and 50-446 License Nos. NPF-87 and NPF-89 Mr. Rafael Flores Senior Vice President and Chief Nuclear Officer Luminant Generation Company, LLC Attn: Regulatory Affairs P.O. Box 1002 Glen Rose, TX 76043


1 . List of Addressees Sincerely, Ira/ Michele G. Evans, Director Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
Cooper Nuclear Station Nebraska Public Power District Docket No. 50-298 License No. DPR-46 Mr. Oscar A Limpias Vice President Nuclear and Chief Nuclear Officer Nebraska Public Power District Cooper Nuclear Station 72676 648A Avenue P.O. Box 98 Brownville, NE 68321 Davis-Besse Nuclear Power Station FirstEnergy Nuclear Operating Co.
: 2. Request for Additional Information cc: Listserv Distribution:
Docket No. 50-346 License No. NPF-3 Mr. Ray Lieb Site Vice President FirstEnergy Nuclear Operating Company c/o Davis-Besse NPS 5501 N. State Route 2 Oak Harbor, OH 43449-9760 Diablo Canyon Power Plant Pacific Gas & Electric Co.
see next page ADAMS Accession No* ML13351A314 OFFICE TL:NRRIDEI BC:NRRJDEI BC(A): LA:NRRIDORU EEEB EEEB NRRJDPRI LPL3-2 PGCB NAME RMathew* JZimmerman*
Docket Nos. 50-275 and 50-323 License Nos. DPR-80 and DPR-82 Mr. Edward D. Halpin Senior Vice President and Chief Nuclear Officer Pacific Gas and Electric Company P.O. Box 56 Mail Code 104/6 Avila Beach, CA 93424 Donald C. Cook Nuclear Plant Indiana Michigan Power Company Docket Nos. 50-315 and 50-316 License Nos. DPR-58 and DPR-7 4 Mr. Lawrence J. Weber Senior Vice President and Chief Nuclear Officer Indiana Michigan Power Company
SStuchell*
SRohrer (SF /f/} DATE 12/18/13 12/18/13 12/19/13 12/17/13 OFFICIAL RECORD COPY *via email PM: NRRIDORU BC:NRRIDORL LPL3-2 I LPL3-2 BPurnell nate 12/18/13 12/19/13 D: NRRJDORL ME vans 12/20/13 Letter to Selected Power Reactor Licensees and Holders of Construction Permits from Michele Evans dated December 20, 2013.  


==SUBJECT:==
Nuclear Generation Group One Cook Place Bridgman, Ml 49106 Dresden Nuclear Power Station Exelon Generation Co., LLC Docket Nos. 50-237 and 50-249 License Nos. DPR-19 and DPR-25 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Duane Arnold Energy Center NextEra Energy Duane Arnold, LLC Docket No. 50-331 License No. DPR-49 Mr. Rich Anderson Site Vice President NextEra Energy Duane Arnold Energy Center 3277 DAEC Road Palo, lA 52324-9785 Edwin I. Hatch Nuclear Plant Southern Nuclear Operating Co.
REQUEST FOR ADDITIONAL INFORMATION REGARDING RESPONSE TO BULLETIN 2012-01, "DESIGN VULNERABILITY IN ELECTRIC POWER SYSTEM" DISTRIBUTION:
Docket Nos. 50-321 and 50-366 License Nos. DPR-57 and NPF-5 Mr. C.R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc.
PUBLIC LPL 1-1 R/F LPL 1-2 R/F LPL2-1 R/F LPL2-2 R/F LPL3-1 R/F LPL3-2 RIF LPL4 R/F TMensah SSanders AMendiola HCruz TMartinez-Navedo RDaley CF aria-Ocasio NColeman LBurkhart JGaslevic DHabib PHil and RMathew JZimmerman SStuchell RidsNrrDorl RidsNrrDorllpl1-1 RidsNrrDorllpl1-2 RidsNrrDorllpl2-1
P.O. Box 1295/BIN B038 Birmingham, AL 35201-1295


RidsNrrDorllpl2-2 RidsNrrDorllpl3-1
Fermi Detroit Edison Co.
Docket No. 50-341 License No. NPF-43 Mr. Joseph H. Plona Senior Vice President and Chief Nuclear Officer Detroit Edison Company Fermi 2-210 NOC 6400 North Dixie Highway Newport, Ml 48166 Fort Calhoun Station Omaha Public Power District Docket No. 50-285 License No. DPR-40 Mr. Louis Cortopassi Vice President and Chief Nuclear Officer Omaha Public Power District Fort Calhoun Station Mail Stop FC-2-4 961 0 Power Lane Blair, NE 68008 Grand Gulf Nuclear Station Entergy Operations, Inc.
Docket No. 50-416 License No. NPF-29 Vice President, Operations Entergy Operations, Inc.
Grand Gulf Nuclear Station P.O. Box 756 Port Gibson, MS 39150 H. B. Robinson Steam Electric Plant Carolina Power & Light Co.
Docket No. 50-261 License No. DPR-23 Mr. William R. Gideon Vice President H.B. Robinson Steam Electric Plant Carolina Power & Light Company 3581 West Entrance Road Hartsville, SC 29550


RidsNrrDorllpl3-2 RidsNrrDorllpl4 RidsOgcMaiiCenter RidsNrrLAABaxter RidsNrrLAJBurkhardt RidsNrrLABCiayton RidsNrrLASFigueroa RidsNrrLAKGoldstein RidsNrrLASRohrer RidsNrrLAMHenderson RidsNrrPMANO RidsNrrPMBeaverValley RidsNrrPMBraidwood RidsNrrPMBrownsFerry RidsNrrPMBrunswick RidsNrrPMByron
Hope Creek Generating Station PSEG Nuclear, LLC Docket No. 50-354 License No. NPF-57 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC - N09 P. 0. Box 236 Hancocks Bridge, NJ 08038 Indian Point Energy Center Entergy Nuclear Operations, Inc.
Docket Nos. 50-247 and 50-286 License Nos. DPR-26 and DPR-64 Vice President, Operations Entergy Nuclear Operations, Inc.
Indian Point Energy Center 450 Broadway, GSB P.O. Box 249 Buchanan, NY 10511-0249 James A. FitzPatrick Nuclear Power Plant Entergy Nuclear Operations, Inc.
Docket No. 50-333 License No. DPR-59 Chris Adner, Licensing Manager Entergy Nuclear Operations, Inc.
James A. FitzPatrick Nuclear Power Plant P.O. Box 110 Lycoming, NY 13093 Joseph M. Farley Nuclear Plant Southern Nuclear Operating Co.
Docket Nos. 50-348 and 50-364 License Nos. NPF-2 and NPF-8 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc.
P.O. Box 1295/Bin 038 Birmingham, AL 35201-1295


RidsNrrPMCallaway RidsNrrPMCalvertCiiffs RidsNrrPMCatawba RidsNrrPMCiinton RidsNrrPMColumbia
LaSalle County Station Exelon Generation Co., LLC Docket Nos. 50-373 and 50-37 4 License Nos. NPF-11 and NPF-18 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Limerick Generating Station Exelon Generation Co., LLC Docket Nos. 50-352 and 50-353 License Nos. NPF-39 and NPF-85 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Millstone Nuclear Power Station Dominion Nuclear Connecticut, Inc.
Docket Nos. 50-336 and 50-423 License Nos. DPR-65 and NPF-49 Mr. David A. Heacock President and Chief Nuclear Officer Virginia Electric & Power Company lnnsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Monticello Nuclear Generating Plant Northern States Power Company Docket No. 50-263 License No. DPR-22 Mr. Mark A. Schimmel Site Vice President Northern States Power Company -
Minnesota Monticello Nuclear Generating Plant 2807 West County Road 75 Monticello, MN 55362-9637


RidsNrrPMComanchePeak RidsNrrPMCooper RidsNrrPMDCCook RidsNrrPMDavisBesse RidsNrrPMDiabloCanyon RidsNrrPMDresden RidsNrrPMDuaneArnold RidsNrrPMFarley RidsNrrPMFermi2
Nine Mile Point Nuclear Station Nine Mile Point Nuclear Station, LLC Docket Nos. 50-220 and 50-410 License Nos. DPR-63 and NPF-69 Mr. Christopher Costanzo Vice President Nine Mile Point Nine Mile Point Nuclear Station, LLC P. 0. Box 63 Lycoming, NY 13093 North Anna Power Station Virginia Electric & Power Co.
Docket Nos. 50-338 and 50-339 License Nos. NPF-4 and NPF-7 Mr. David A. Heacock President and Chief Nuclear Officer Virginia Electric & Power Compay lnnsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Oconee Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-269, 50-270 and 50-287 License Nos. DPR-38, DPR-47 and DPR-55 Mr. Scott Batson Vice President, Oconee Nuclear Station Duke Energy Carolinas, LLC 7800 Rochester Highway Seneca, SC 29672 Oyster Creek Nuclear Generating Station Exelon Generation Co., LLC Docket No. 50-219 License No. DPR-16 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555


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Palisades Nuclear Plant Entergy Nuclear Operations, Inc.
Docket No. 50-255 License No. DPR-20 Vice President, Operations Entergy Nuclear Operations, Inc.
Palisades Nuclear Plant 27780 Blue Star Memorial Highway Covert, Ml 49043-9530 Palo Verde Nuclear Generating Station Arizona Public Service Company Docket Nos. STN 50-528, STN 50-529 and STN 50-530 License Nos. NPF-41, NPF-51 and NPF-7 4 Mr. Randall K. Edington Executive Vice President Nuclear and Chief Nuclear Officer Arizona Public Service Co.
P.O. Box 52034, MS 7602 Phoenix, AZ 85072-2034 Peach Bottom Atomic Power Station Exelon Generation Co., LLC Docket Nos. 50-277 and 50-278 License Nos. DPR-44 and DPR-56 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Perry Nuclear Power Plant FirstEnergy Nuclear Operating Co.
Docket No. 50-440 License No. NPF-58 Mr. Vito A. Kaminskas Site Vice President - Nuclear - Perry FirstEnergy Nuclear Operating Company Perry Nuclear Power Plant 10 Center Road, A290 Perry, OH 44081


RidsNrrPMFortCalhoun RidsNrrPMGrandGulf RidsNrrPMHatch RidsNrrPMHopeCreek
Pilgrim Nuclear Power Station Unit No. 1 Entergy Nuclear Operations, Inc.
Docket No. 50-293 License No. DPR-35 Mr. John Dent, Jr.
Vice President and Site Vice President Entergy Nuclear Operations, Inc.
Pilgrim Nuclear Power Station 600 Rocky Hill Road Plymouth, MA 02360-5508 Point Beach Nuclear Plant NextEra Energy Point Beach, LLC Docket Nos. 50-266 and 50-301 License Nos. DPR-24 and DPR-27 Mr. Larry Meyer Site Vice President NextEra Energy Point Beach, LLC Point Beach Nuclear Plant, Units 1 & 2 6610 Nuclear Road Two Rivers, WI 54241-9516 Prairie Island Nuclear Generating Plant Northern States Power Co. Minnesota Docket Nos. 50-282 and 50-306 License Nos. DPR-42 and DPR-60 Mr. James E. Lynch Site Vice President Northern States Power Company -
Minnesota Prairie Island Nuclear Generating Plant 1717 Wakonade Drive East Welch, MN 55089-9642 Quad Cities Nuclear Power Station Exelon Generation Co., LLC Docket Nos. 50-254 and 50-265 License Nos. DPR-29 and DPR-30 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555


RidsN rrPM I ndianPoint RidsNrrPMLaSalle RidsNrrPMLimerick
R. E. Ginna Nuclear Power Plant R.E. Ginna Nuclear Power Plant, LLC Docket No. 50-244 License No. DPR-18 Mr. Joseph E. Pacher Vice President R.E. Ginna Nuclear Power Plant, LLC R. E. Ginna Nuclear Power Plant 1503 Lake Road Ontario, NY 14519 River Bend Station Entergy Operations, Inc.
Docket No. 50-458 License No. NPF-47 Vice President, Operations Entergy Operations, Inc.
River Bend Station 5485 U.S. Highway 61N St. Francisville, LA 70775 Salem Nuclear Generating Station PSEG Nuclear, LLC.
Docket Nos. 50-272 & 50-311 License Nos. DPR-70 and DPR-75 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC - N09 P. 0. Box 236 Hancocks Bridge, NJ 08038 Seabrook Nuclear Plant NextEra Energy Seabrook, LLC Docket No 50-443 License No. NFP-86 Mr. Kevin Walsh Vice President, Seabrook Nuclear Plant c/o Mr. Michael Ossing NextEra Energy Seabrook, LLC P.O. Box 300 Seabrook, NH 0387 4


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Sequoyah Nuclear Plant Tennessee Valley Authority Docket Nos. 50-327 and 50-328 License Nos. DPR-77 and DPR-79 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street LP 3D-C Chattanooga, TN 37 402-2801 Shearon Harris Nuclear Power Plant Carolina Power & Light Co.
Docket No. 50-400 License No. NPF-63 Mr. George T. Hamrick Vice President Carolina Power and Light Company Shearon Harris Nuclear Power Plant P. 0. Box 165, Mail Zone 1 New Hill, NC 27562-0165 South Texas Project STP Nuclear Operating Co.
Docket Nos. 50-498 and 50-499 License Nos. NPF-76 and NPF-80 Mr. Dennis L. Koehl President and CEO/CNO STP Nuclear Operating Company South Texas Project Electric Generating Station P.O. Box 289 Wadsworth, TX 77483 St. Lucie Plant Florida Power & Light Co.
Docket Nos. 50-335 and 50-389 License Nos. DPR-67 and NPF-16 Mr. Mano Nazar Executive Vice President and Chief Nuclear Officer NextEra Energy 700 Universe Boulevard P. 0. Box 14000 Juno Beach, FL 33408-0420


RidsNrrPMRobinson
Surry Power Station Virginia Electric & Power Co.
Docket Nos. 50-280 and 50-281 License Nos. DPR-32 and DPR-37 Mr. David A. Heacock President and Chief Nuclear Officer Dominion Nuclear lnnsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Susquehanna Steam Electric Station PPL Susquehanna, LLC Docket Nos. 50-387 and 50-388 License Nos. NPF-14 and NPF-22 Mr. Timothy S. Rausch Senior Vice President and Chief Nuclear Officer PPL Susquehanna, LLC 769 Salem Boulevard NUCSB3 Berwick, PA 18603-0467 Three Mile Island, Unit 1 Exelon Nuclear Docket No. 50-289 License No. DPR-50 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Turkey Point Florida Power and Light Co.
Docket Nos. 50-250 and 50-251 License Nos. DPR-31 and DPR-41 Mr. Mano Nazar Executive Vice President and Chief Nuclear Officer NextEra Energy 700 Universe Boulevard P.O. Box 14000 Juno Beach, FL 33408-0420


RidsNrrPMSalem RidsNrrPMSeabrook RidsNrrPMSequoyah RidsNrrPMShearonHarris RidsNrrPMSouthTexas RidsNrrPMStlucie RidsNrrPMSummer RidsNrrPMSurry RidsNrrPMSusquehanna
Vermont Yankee Nuclear Power Station Entergy Nuclear Operations, Inc.
Docket No. 50-271 License No. DPR-28 Site Vice President Entergy Nuclear Operations, Inc.
Vermont Yankee Nuclear Power Station P.O. Box 250, Governor Hunt Road Vernon, VT 05354 Virgil C. Summer Nuclear Station South Carolina Electric & Gas Co.
Docket No. 50-395 License No. NPF-12 Mr. Thomas D. Gatlin Vice President Nuclear Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station P.O. Box 88, Mail Code 800 Jenkinsville, SC 29065 Vogtle Electric Generating Plant Southern Nuclear Operating Co.
Docket Nos. 50-424 and 50-425 License Nos. NPF-68 and NPF-81 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc.
P.O. Box 1295/Bin 038 Birmingham, AL 35201-1295 Waterford Steam Electric Station Entergy Operations, Inc.
Docket No. 50-382 License No. NPF-38 Vice President, Operations Entergy Operations, Inc.
Waterford Steam Electric Station, Unit 3 17265 River Road Killona, LA 70057-0751


RidsNrrPMThreeMilelsland
Watts Bar Nuclear Plant. Unit 1 Tennessee Valley Authority Docket No. 50-390 License No. NPF-9 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street, LP 3D-C Chattanooga, TN 37402-2801 Watts Bar Nuclear Plant. Unit 2 Tennessee Valley Authority Docket No. 50-391 Construction Permit No. CPPR No. 092 Mr. Michael D. Skaggs Senior Vice President, Nuclear Construction Tennessee Valley Authority Lookout Place 6A 1101 Market Street Chattanooga, TN 37402-2801 William B. McGuire Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-369 and 50-370 License Nos. NPF-9 and NPF-17 Mr. Steven D. Capps Vice President Duke Energy Carolinas, LLC McGuire Nuclear Station 12700 Hagers Ferry Road Huntersville, NC 28078-8985 Wolf Creek Generating Station Wolf Creek Nuclear Operating Corp.
Docket No. 50-482 License No. NPF-42 Mr. Matthew W. Sunseri President and Chief Executive Officer Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839


RidsNrrPMTurkeyPoint
REQUEST FOR ADDITIONAL INFORMATION FOR BULLETIN 2012-01, "DESIGN VULNERABILITY IN ELECTRIC POWER SYSTEM" On July 27, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued Bulletin 2012-01, "Design Vulnerability in Electric Power System" (Agencywide Documents Access and Management System Accession No. ML12074A115), to all holders of operating licenses and combined licenses for nuclear power reactors. In addition, Watts Bar Nuclear Plant, Unit 2, is addressing the issues identified in the bulletin as part of the licensing process. Bulletin 2012-01 requested information about each facility's electric power system designs, in light of recent operating experience involving the loss of one of the three phases of the offsite power circuit (single-phase open circuit condition) at Byron Station, Unit 2.
In order for the NRC staff to complete its review of responses to the bulletin, the following additional information is requested:
: 1. Provide a summary of all interim corrective actions that have been taken since the January 30, 2012, event at Byron Station, Unit 2, to ensure that plant operators can promptly diagnose and respond to open phase conditions on the offsite power circuits for Class-1 E vital buses until permanent corrective actions are completed.
: 2. Provide a status and schedule for completion of plant design changes and modifications to resolve issues with an open phase of electric power.
Enclosure 2
* ML13351A314                                              *via email OFFICE      TL:NRRIDEI BC:NRRJDEI  BC(A):          LA:NRRIDORU      PM: NRRIDORU  BC:NRRIDORL D: NRRJDORL EEEB      EEEB        NRRJDPRI        LPL3-2          LPL3-2        I LPL3-2 PGCB NAME      RMathew*  JZimmerman*  SStuchell*      SRohrer (SF /f/} BPurnell      nate        MEvans DATE      12/18/13  12/18/13    12/19/13        12/17/13        12/18/13      12/19/13    12/20/13


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Letter to Selected Power Reactor Licensees and Holders of Construction Permits from Michele Evans dated December 20, 2013.


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==SUBJECT:==
REQUEST FOR ADDITIONAL INFORMATION REGARDING RESPONSE TO BULLETIN 2012-01, "DESIGN VULNERABILITY IN ELECTRIC POWER SYSTEM" DISTRIBUTION:
PUBLIC                        RidsNrrLAKGoldstein            RidsNrrPMOconee LPL 1-1 R/F                    RidsNrrLASRohrer              RidsNrrPMOysterCreek LPL 1-2 R/F                    RidsNrrLAMHenderson            RidsNrrPMPalisades LPL2-1 R/F                    RidsNrrPMANO                  RidsNrrPMPaloVerde LPL2-2 R/F                    RidsNrrPMBeaverValley          RidsNrrPMPeachBottom LPL3-1 R/F                    RidsNrrPMBraidwood            RidsNrrPMPerry LPL3-2 RIF                    RidsNrrPMBrownsFerry          RidsNrrPMPilgrim LPL4 R/F                      RidsNrrPMBrunswick            RidsNrrPMPointBeach TMensah                        RidsNrrPMByron                RidsNrrPMPrairielsland SSanders                      RidsNrrPMCallaway              RidsNrrPMQuadCities AMendiola                      RidsNrrPMCalvertCiiffs        RidsNrrPMREGinna HCruz                          RidsNrrPMCatawba              RidsNrrPMRiverBend TMartinez-Navedo              RidsNrrPMCiinton              RidsNrrPMRobinson RDaley                        RidsNrrPMColumbia              RidsNrrPMSalem CF aria-Ocasio                RidsNrrPMComanchePeak          RidsNrrPMSeabrook NColeman                      RidsNrrPMCooper                RidsNrrPMSequoyah LBurkhart                      RidsNrrPMDCCook                RidsNrrPMShearonHarris JGaslevic                      RidsNrrPMDavisBesse            RidsNrrPMSouthTexas DHabib                        RidsNrrPMDiabloCanyon          RidsNrrPMStlucie PHil and                      RidsNrrPMDresden              RidsNrrPMSummer RMathew                        RidsNrrPMDuaneArnold          RidsNrrPMSurry JZimmerman                    RidsNrrPMFarley                RidsNrrPMSusquehanna SStuchell                      RidsNrrPMFermi2                RidsNrrPMThreeMilelsland RidsNrrDorl                    RidsNrrPMFitzPatrick          RidsNrrPMTurkeyPoint RidsNrrDorllpl1-1              RidsNrrPMFortCalhoun          RidsNrrPMVermontYankee RidsNrrDorllpl1-2              RidsNrrPMGrandGulf            RidsNrrPMVogtle RidsNrrDorllpl2-1              RidsNrrPMHatch                RidsNrrPMWaterford RidsNrrDorllpl2-2              RidsNrrPMHopeCreek            RidsNrrPMWattsBar1 RidsNrrDorllpl3-1              RidsN rrPM IndianPoint        RidsNrrPMWattsBar2 RidsNrrDorllpl3-2              RidsNrrPMLaSalle              RidsNrrPMWolfCreek RidsNrrDorllpl4                RidsNrrPMLimerick              RidsRgn1 MaiiCenter Resource RidsOgcMaiiCenter              RidsNrrPMMcGuire              RidsRgn2MaiiCenter Resource RidsNrrLAABaxter              RidsNrrPMMillstone            RidsRgn3MaiiCenter Resource RidsNrrLAJBurkhardt            RidsNrrPMMonticello            RidsRgn4Mai1Center Resource RidsNrrLABCiayton              RidsNrrPMNineMilePoint RidsNrrLASFigueroa            RidsNrrPMNorthAnna}}

Revision as of 10:09, 4 November 2019

Request for Additional Information Regarding Response to Bulletin 2012-01, Design Vulnerability in Electric Power System.
ML13351A314
Person / Time
Site: Oyster Creek
Issue date: 12/20/2013
From: Marilyn Evans
Plant Licensing Branch III
To:
Blake Purnell, NRR/DORL 415-1380
References
BL-12-001
Download: ML13351A314 (21)
v • d • e


Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 December 20, 2013 To Those on the Enclosed List

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION REGARDING RESPONSE TO BULLETIN 2012-01, "DESIGN VULNERABILITY IN ELECTRIC POWER SYSTEM" On July 27, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued Bulletin 2012-01, "Design Vulnerability in Electric Power System" (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12074A115), to all holders of operating licenses and combined licenses for nuclear power reactors. In addition, Watts Bar Nuclear Plant, Unit 2, is addressing the issues identified in the bulletin as part of the licensing process.

Bulletin 2012-01 requested information about each facility's electric power system designs, in light of recent operating experience involving the loss of one of the three phases of the offsite power circuit (single-phase open circuit condition) at Byron Station, Unit 2.

On February 15, 2013, the NRC staff completed the review of licensee responses to the bulletin and issued a summary report (ADAMS Accession No. ML13052A711). Since then, the NRC staff has held several public meetings with the industry to discuss the open phase issue and options for resolving it.

On October 9, 2013, the Nuclear Energy Institute (NEI} submitted an industry initiative document (i.e., Strategy Paper) to support the resolution of the open phase issue described in Bulletin 2012-01 (ADAMS Accession No. ML13333A147). The NEt document also addresses recent operating events involving loss of a single phase of electric power at the Bruce nuclear power plant in Canada and loss of two phases of electric power at the Forsmark, Unit 3, in Sweden. The initiative was approved by the NEI Nuclear Strategic Issues Advisory Committee and addresses all operating plants.

The NRC staff is requesting additional information (enclosed) from licensees to verify that they have completed interim corrective actions and compensatory measures and to determine the status of each licensee's long-term corrective actions. Please provide a written response, signed under oath or affirmation, to the enclosed request for additional information by February 3, 2014.

et al. If you have any questions regarding this letter, please contact Tanya M. Mensah, Senior Project Manager, at 301-415-3610, or via email at Tanya.Mensah@nrc.gov.

Sincerely, Michele G. Evans, Director Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

Enclosures:

1. List of Addressees
2. Request for Additional Information cc: Listserv

LIST OF ADDRESSEES Arkansas Nuclear One Entergy Operations, Inc.

Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6 Vice President, Operations Entergy Operations, Inc.

Arkansas Nuclear One 1448 S.R. 333 Russellville, AR 72802 Beaver Valley Power Station FirstEnergy Nuclear Operating Co.

Docket Nos. 50-334 and 50-412 License Nos. DPR-66 and NPF-73 Mr. Eric A. Larson Site Vice President FirstEnergy Nuclear Operating Company P.O. Box 4, Route 168 Shippingport, PA 15077 Braidwood Station Exelon Generation Co., LLC Docket Nos. STN 50-456 and STN 50-457 License Nos. NPF-72 and NPF-77 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Browns Ferry Nuclear Plant Tennessee Valley Authority Docket Nos. 50-259, 50-260 and 50-296 License Nos. DPR-33, DPR-52 and DPR-68 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street, LP 3D-C Chattanooga, TN 37402-2801 Brunswick Steam Electric Plant Carolina Power & Light Co.

Docket Nos. 50-325 and 50-324 Enclosure 1

License Nos. DPR-71 and DPR-62 Mr. Michael J. Annacone Vice President Carolina Power & Light Company Brunswick Steam Electric Plant P. 0. Box 10429 Southport, NC 28461 Byron Station Exelon Generation Co., LLC Docket Nos. STN 50-454 and STN 50-455 License Nos. NPF-37 and NPF-66 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Callaway Plant Union Electric Company Docket No. 50-483 License No. NPF-30 Mr. Adam C. Heflin Senior Vice President and Chief Nuclear Officer Union Electric Company Ameren Missouri P.O. Box 620 Fulton, MO 65251 Calvert Cliffs Nuclear Power Plant Calvert Cliffs Nuclear Power Plant, LLC Docket Nos. 50-317 and 50-318 License Nos. DPR-53 and DPR-69 Mr. George H. Gellrich Vice President Calvert Cliffs Nuclear Power Plant, LLC Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, MD 20657-4702

Catawba Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-413 and 50-414 License Nos. NPF-35 and NPF-52 Mr. Kelvin Henderson Site Vice President Duke Energy Carolinas, LLC Catawba Nuclear Station 4800 Concord Road York, SC 29745 Clinton Power Station Exelon Generation Co., LLC Docket No. 50-461 License No. NPF-62 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Columbia Generating Station Energy Northwest Docket No. 50-397 License No. NPF-21 Mr. Mark E. Reddemann Chief Executive Officer Energy Northwest MD 1023 North Power Plant Loop P.O. Box 968 Richland, WA 99352 Comanche Peak Nuclear Power Plant Luminant Generation Co., LLC Docket Nos. 50-445 and 50-446 License Nos. NPF-87 and NPF-89 Mr. Rafael Flores Senior Vice President and Chief Nuclear Officer Luminant Generation Company, LLC Attn: Regulatory Affairs P.O. Box 1002 Glen Rose, TX 76043

Cooper Nuclear Station Nebraska Public Power District Docket No. 50-298 License No. DPR-46 Mr. Oscar A Limpias Vice President Nuclear and Chief Nuclear Officer Nebraska Public Power District Cooper Nuclear Station 72676 648A Avenue P.O. Box 98 Brownville, NE 68321 Davis-Besse Nuclear Power Station FirstEnergy Nuclear Operating Co.

Docket No. 50-346 License No. NPF-3 Mr. Ray Lieb Site Vice President FirstEnergy Nuclear Operating Company c/o Davis-Besse NPS 5501 N. State Route 2 Oak Harbor, OH 43449-9760 Diablo Canyon Power Plant Pacific Gas & Electric Co.

Docket Nos. 50-275 and 50-323 License Nos. DPR-80 and DPR-82 Mr. Edward D. Halpin Senior Vice President and Chief Nuclear Officer Pacific Gas and Electric Company P.O. Box 56 Mail Code 104/6 Avila Beach, CA 93424 Donald C. Cook Nuclear Plant Indiana Michigan Power Company Docket Nos. 50-315 and 50-316 License Nos. DPR-58 and DPR-7 4 Mr. Lawrence J. Weber Senior Vice President and Chief Nuclear Officer Indiana Michigan Power Company

Nuclear Generation Group One Cook Place Bridgman, Ml 49106 Dresden Nuclear Power Station Exelon Generation Co., LLC Docket Nos. 50-237 and 50-249 License Nos. DPR-19 and DPR-25 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Duane Arnold Energy Center NextEra Energy Duane Arnold, LLC Docket No. 50-331 License No. DPR-49 Mr. Rich Anderson Site Vice President NextEra Energy Duane Arnold Energy Center 3277 DAEC Road Palo, lA 52324-9785 Edwin I. Hatch Nuclear Plant Southern Nuclear Operating Co.

Docket Nos. 50-321 and 50-366 License Nos. DPR-57 and NPF-5 Mr. C.R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc.

P.O. Box 1295/BIN B038 Birmingham, AL 35201-1295

Fermi Detroit Edison Co.

Docket No. 50-341 License No. NPF-43 Mr. Joseph H. Plona Senior Vice President and Chief Nuclear Officer Detroit Edison Company Fermi 2-210 NOC 6400 North Dixie Highway Newport, Ml 48166 Fort Calhoun Station Omaha Public Power District Docket No. 50-285 License No. DPR-40 Mr. Louis Cortopassi Vice President and Chief Nuclear Officer Omaha Public Power District Fort Calhoun Station Mail Stop FC-2-4 961 0 Power Lane Blair, NE 68008 Grand Gulf Nuclear Station Entergy Operations, Inc.

Docket No. 50-416 License No. NPF-29 Vice President, Operations Entergy Operations, Inc.

Grand Gulf Nuclear Station P.O. Box 756 Port Gibson, MS 39150 H. B. Robinson Steam Electric Plant Carolina Power & Light Co.

Docket No. 50-261 License No. DPR-23 Mr. William R. Gideon Vice President H.B. Robinson Steam Electric Plant Carolina Power & Light Company 3581 West Entrance Road Hartsville, SC 29550

Hope Creek Generating Station PSEG Nuclear, LLC Docket No. 50-354 License No. NPF-57 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC - N09 P. 0. Box 236 Hancocks Bridge, NJ 08038 Indian Point Energy Center Entergy Nuclear Operations, Inc.

Docket Nos. 50-247 and 50-286 License Nos. DPR-26 and DPR-64 Vice President, Operations Entergy Nuclear Operations, Inc.

Indian Point Energy Center 450 Broadway, GSB P.O. Box 249 Buchanan, NY 10511-0249 James A. FitzPatrick Nuclear Power Plant Entergy Nuclear Operations, Inc.

Docket No. 50-333 License No. DPR-59 Chris Adner, Licensing Manager Entergy Nuclear Operations, Inc.

James A. FitzPatrick Nuclear Power Plant P.O. Box 110 Lycoming, NY 13093 Joseph M. Farley Nuclear Plant Southern Nuclear Operating Co.

Docket Nos. 50-348 and 50-364 License Nos. NPF-2 and NPF-8 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc.

P.O. Box 1295/Bin 038 Birmingham, AL 35201-1295

LaSalle County Station Exelon Generation Co., LLC Docket Nos. 50-373 and 50-37 4 License Nos. NPF-11 and NPF-18 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Limerick Generating Station Exelon Generation Co., LLC Docket Nos. 50-352 and 50-353 License Nos. NPF-39 and NPF-85 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Millstone Nuclear Power Station Dominion Nuclear Connecticut, Inc.

Docket Nos. 50-336 and 50-423 License Nos. DPR-65 and NPF-49 Mr. David A. Heacock President and Chief Nuclear Officer Virginia Electric & Power Company lnnsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Monticello Nuclear Generating Plant Northern States Power Company Docket No. 50-263 License No. DPR-22 Mr. Mark A. Schimmel Site Vice President Northern States Power Company -

Minnesota Monticello Nuclear Generating Plant 2807 West County Road 75 Monticello, MN 55362-9637

Nine Mile Point Nuclear Station Nine Mile Point Nuclear Station, LLC Docket Nos. 50-220 and 50-410 License Nos. DPR-63 and NPF-69 Mr. Christopher Costanzo Vice President Nine Mile Point Nine Mile Point Nuclear Station, LLC P. 0. Box 63 Lycoming, NY 13093 North Anna Power Station Virginia Electric & Power Co.

Docket Nos. 50-338 and 50-339 License Nos. NPF-4 and NPF-7 Mr. David A. Heacock President and Chief Nuclear Officer Virginia Electric & Power Compay lnnsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Oconee Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-269, 50-270 and 50-287 License Nos. DPR-38, DPR-47 and DPR-55 Mr. Scott Batson Vice President, Oconee Nuclear Station Duke Energy Carolinas, LLC 7800 Rochester Highway Seneca, SC 29672 Oyster Creek Nuclear Generating Station Exelon Generation Co., LLC Docket No. 50-219 License No. DPR-16 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555

Palisades Nuclear Plant Entergy Nuclear Operations, Inc.

Docket No. 50-255 License No. DPR-20 Vice President, Operations Entergy Nuclear Operations, Inc.

Palisades Nuclear Plant 27780 Blue Star Memorial Highway Covert, Ml 49043-9530 Palo Verde Nuclear Generating Station Arizona Public Service Company Docket Nos. STN 50-528, STN 50-529 and STN 50-530 License Nos. NPF-41, NPF-51 and NPF-7 4 Mr. Randall K. Edington Executive Vice President Nuclear and Chief Nuclear Officer Arizona Public Service Co.

P.O. Box 52034, MS 7602 Phoenix, AZ 85072-2034 Peach Bottom Atomic Power Station Exelon Generation Co., LLC Docket Nos. 50-277 and 50-278 License Nos. DPR-44 and DPR-56 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Perry Nuclear Power Plant FirstEnergy Nuclear Operating Co.

Docket No. 50-440 License No. NPF-58 Mr. Vito A. Kaminskas Site Vice President - Nuclear - Perry FirstEnergy Nuclear Operating Company Perry Nuclear Power Plant 10 Center Road, A290 Perry, OH 44081

Pilgrim Nuclear Power Station Unit No. 1 Entergy Nuclear Operations, Inc.

Docket No. 50-293 License No. DPR-35 Mr. John Dent, Jr.

Vice President and Site Vice President Entergy Nuclear Operations, Inc.

Pilgrim Nuclear Power Station 600 Rocky Hill Road Plymouth, MA 02360-5508 Point Beach Nuclear Plant NextEra Energy Point Beach, LLC Docket Nos. 50-266 and 50-301 License Nos. DPR-24 and DPR-27 Mr. Larry Meyer Site Vice President NextEra Energy Point Beach, LLC Point Beach Nuclear Plant, Units 1 & 2 6610 Nuclear Road Two Rivers, WI 54241-9516 Prairie Island Nuclear Generating Plant Northern States Power Co. Minnesota Docket Nos. 50-282 and 50-306 License Nos. DPR-42 and DPR-60 Mr. James E. Lynch Site Vice President Northern States Power Company -

Minnesota Prairie Island Nuclear Generating Plant 1717 Wakonade Drive East Welch, MN 55089-9642 Quad Cities Nuclear Power Station Exelon Generation Co., LLC Docket Nos. 50-254 and 50-265 License Nos. DPR-29 and DPR-30 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555

R. E. Ginna Nuclear Power Plant R.E. Ginna Nuclear Power Plant, LLC Docket No. 50-244 License No. DPR-18 Mr. Joseph E. Pacher Vice President R.E. Ginna Nuclear Power Plant, LLC R. E. Ginna Nuclear Power Plant 1503 Lake Road Ontario, NY 14519 River Bend Station Entergy Operations, Inc.

Docket No. 50-458 License No. NPF-47 Vice President, Operations Entergy Operations, Inc.

River Bend Station 5485 U.S. Highway 61N St. Francisville, LA 70775 Salem Nuclear Generating Station PSEG Nuclear, LLC.

Docket Nos. 50-272 & 50-311 License Nos. DPR-70 and DPR-75 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC - N09 P. 0. Box 236 Hancocks Bridge, NJ 08038 Seabrook Nuclear Plant NextEra Energy Seabrook, LLC Docket No 50-443 License No. NFP-86 Mr. Kevin Walsh Vice President, Seabrook Nuclear Plant c/o Mr. Michael Ossing NextEra Energy Seabrook, LLC P.O. Box 300 Seabrook, NH 0387 4

Sequoyah Nuclear Plant Tennessee Valley Authority Docket Nos. 50-327 and 50-328 License Nos. DPR-77 and DPR-79 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street LP 3D-C Chattanooga, TN 37 402-2801 Shearon Harris Nuclear Power Plant Carolina Power & Light Co.

Docket No. 50-400 License No. NPF-63 Mr. George T. Hamrick Vice President Carolina Power and Light Company Shearon Harris Nuclear Power Plant P. 0. Box 165, Mail Zone 1 New Hill, NC 27562-0165 South Texas Project STP Nuclear Operating Co.

Docket Nos. 50-498 and 50-499 License Nos. NPF-76 and NPF-80 Mr. Dennis L. Koehl President and CEO/CNO STP Nuclear Operating Company South Texas Project Electric Generating Station P.O. Box 289 Wadsworth, TX 77483 St. Lucie Plant Florida Power & Light Co.

Docket Nos. 50-335 and 50-389 License Nos. DPR-67 and NPF-16 Mr. Mano Nazar Executive Vice President and Chief Nuclear Officer NextEra Energy 700 Universe Boulevard P. 0. Box 14000 Juno Beach, FL 33408-0420

Surry Power Station Virginia Electric & Power Co.

Docket Nos. 50-280 and 50-281 License Nos. DPR-32 and DPR-37 Mr. David A. Heacock President and Chief Nuclear Officer Dominion Nuclear lnnsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Susquehanna Steam Electric Station PPL Susquehanna, LLC Docket Nos. 50-387 and 50-388 License Nos. NPF-14 and NPF-22 Mr. Timothy S. Rausch Senior Vice President and Chief Nuclear Officer PPL Susquehanna, LLC 769 Salem Boulevard NUCSB3 Berwick, PA 18603-0467 Three Mile Island, Unit 1 Exelon Nuclear Docket No. 50-289 License No. DPR-50 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Turkey Point Florida Power and Light Co.

Docket Nos. 50-250 and 50-251 License Nos. DPR-31 and DPR-41 Mr. Mano Nazar Executive Vice President and Chief Nuclear Officer NextEra Energy 700 Universe Boulevard P.O. Box 14000 Juno Beach, FL 33408-0420

Vermont Yankee Nuclear Power Station Entergy Nuclear Operations, Inc.

Docket No. 50-271 License No. DPR-28 Site Vice President Entergy Nuclear Operations, Inc.

Vermont Yankee Nuclear Power Station P.O. Box 250, Governor Hunt Road Vernon, VT 05354 Virgil C. Summer Nuclear Station South Carolina Electric & Gas Co.

Docket No. 50-395 License No. NPF-12 Mr. Thomas D. Gatlin Vice President Nuclear Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station P.O. Box 88, Mail Code 800 Jenkinsville, SC 29065 Vogtle Electric Generating Plant Southern Nuclear Operating Co.

Docket Nos. 50-424 and 50-425 License Nos. NPF-68 and NPF-81 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Co., Inc.

P.O. Box 1295/Bin 038 Birmingham, AL 35201-1295 Waterford Steam Electric Station Entergy Operations, Inc.

Docket No. 50-382 License No. NPF-38 Vice President, Operations Entergy Operations, Inc.

Waterford Steam Electric Station, Unit 3 17265 River Road Killona, LA 70057-0751

Watts Bar Nuclear Plant. Unit 1 Tennessee Valley Authority Docket No. 50-390 License No. NPF-9 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street, LP 3D-C Chattanooga, TN 37402-2801 Watts Bar Nuclear Plant. Unit 2 Tennessee Valley Authority Docket No. 50-391 Construction Permit No. CPPR No. 092 Mr. Michael D. Skaggs Senior Vice President, Nuclear Construction Tennessee Valley Authority Lookout Place 6A 1101 Market Street Chattanooga, TN 37402-2801 William B. McGuire Nuclear Station Duke Energy Carolinas, LLC Docket Nos. 50-369 and 50-370 License Nos. NPF-9 and NPF-17 Mr. Steven D. Capps Vice President Duke Energy Carolinas, LLC McGuire Nuclear Station 12700 Hagers Ferry Road Huntersville, NC 28078-8985 Wolf Creek Generating Station Wolf Creek Nuclear Operating Corp.

Docket No. 50-482 License No. NPF-42 Mr. Matthew W. Sunseri President and Chief Executive Officer Wolf Creek Nuclear Operating Corporation P.O. Box 411 Burlington, KS 66839

REQUEST FOR ADDITIONAL INFORMATION FOR BULLETIN 2012-01, "DESIGN VULNERABILITY IN ELECTRIC POWER SYSTEM" On July 27, 2012, the U.S. Nuclear Regulatory Commission (NRC) issued Bulletin 2012-01, "Design Vulnerability in Electric Power System" (Agencywide Documents Access and Management System Accession No. ML12074A115), to all holders of operating licenses and combined licenses for nuclear power reactors. In addition, Watts Bar Nuclear Plant, Unit 2, is addressing the issues identified in the bulletin as part of the licensing process.Bulletin 2012-01 requested information about each facility's electric power system designs, in light of recent operating experience involving the loss of one of the three phases of the offsite power circuit (single-phase open circuit condition) at Byron Station, Unit 2.

In order for the NRC staff to complete its review of responses to the bulletin, the following additional information is requested:

1. Provide a summary of all interim corrective actions that have been taken since the January 30, 2012, event at Byron Station, Unit 2, to ensure that plant operators can promptly diagnose and respond to open phase conditions on the offsite power circuits for Class-1 E vital buses until permanent corrective actions are completed.
2. Provide a status and schedule for completion of plant design changes and modifications to resolve issues with an open phase of electric power.

Enclosure 2

  • ML13351A314 *via email OFFICE TL:NRRIDEI BC:NRRJDEI BC(A): LA:NRRIDORU PM: NRRIDORU BC:NRRIDORL D: NRRJDORL EEEB EEEB NRRJDPRI LPL3-2 LPL3-2 I LPL3-2 PGCB NAME RMathew* JZimmerman* SStuchell* SRohrer (SF /f/} BPurnell nate MEvans DATE 12/18/13 12/18/13 12/19/13 12/17/13 12/18/13 12/19/13 12/20/13

Letter to Selected Power Reactor Licensees and Holders of Construction Permits from Michele Evans dated December 20, 2013.

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION REGARDING RESPONSE TO BULLETIN 2012-01, "DESIGN VULNERABILITY IN ELECTRIC POWER SYSTEM" DISTRIBUTION:

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