ML080380090
| ML080380090 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/07/2008 |
| From: | John Hughey NRC/NRR/ADRO/DORL/LPLI-2 |
| To: | Pardee C Exelon Generation Co |
| Hughey J, NRR/DORL, 301-415-3204 | |
| References | |
| Download: ML080380090 (5) | |
Text
February 7, 2008 Mr. Charles G. Pardee Chief Nuclear Officer and Senior Vice President Exelon Generation Company, LLC 200 Exelon Way Kennett Square, PA 19348
SUBJECT:
PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 LICENSE AMENDMENT REQUEST FOR APPLICATION OF ALTERNATIVE SOURCE TERM
Dear Mr. Pardee:
By letter to the Nuclear Regulatory Commission (NRC) dated July 13, 2007 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML072570151), Exelon Generation Company, LLC (the licensee), submitted a License Amendment Request (LAR) for application of Alternative Source Term at Peach Bottom Atomic Power Station, Units 2 and 3.
The NRC staff has reviewed the request submitted by the licensee and has identified a need for additional information as set forth in the Enclosure.
The draft questions were sent to David Helker, from your staff, to ensure that the questions were understandable, the regulatory basis for the questions was clear, and to determine if the information was previously docketed. On February 6, 2008, Mr. Helker indicated that the licensee will submit a response by February 29, 2008. Please note that if you do not respond to this letter by this date or provide an acceptable alternate date in writing, we may reject your application for amendment under the provisions of Title 10 of the Code of Federal Regulations, Section 2.108. If you have any questions, please contact John Hughey at (301) 415-3204.
Sincerely,
/ra/
John D. Hughey, Project Manager Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278 cc: See next page
February 7, 2008 Mr. Charles G. Pardee Chief Nuclear Officer and Senior Vice President Exelon Generation Company, LLC 200 Exelon Way Kennett Square, PA 19348
SUBJECT:
PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 LICENSE AMENDMENT REQUEST FOR APPLICATION OF ALTERNATIVE SOURCE TERM
Dear Mr. Pardee:
By letter to the Nuclear Regulatory Commission (NRC) dated July 13, 2007 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML072570151), Exelon Generation Company, LLC (the licensee), submitted a License Amendment Request (LAR) for application of Alternative Source Term at Peach Bottom Atomic Power Station, Units 2 and 3.
The NRC staff has reviewed the request submitted by the licensee and has identified a need for additional information as set forth in the Enclosure.
The draft questions were sent to David Helker, from your staff, to ensure that the questions were understandable, the regulatory basis for the questions was clear, and to determine if the information was previously docketed. On February 6, 2008, Mr. Helker indicated that the licensee will submit a response by February 29, 2008. Please note that if you do not respond to this letter by this date or provide an acceptable alternate date in writing, we may reject your application for amendment under the provisions of Title 10 of the Code of Federal Regulations, Section 2.108. If you have any questions, please contact John Hughey at (301) 415-3204.
Sincerely,
/ra/
John D. Hughey, Project Manager Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278 cc: See next page DISTRIBUTION:
PUBLIC LPLI-2 R/F RidsNrrPMJHughey RidsNrrLAABaxter KManoly RidsRgn1MailCenter RidsNrrDorlLpl1-2 ATsirigotis WJessup ADAMS Accession Number: ML080380090
- by memo dated OFFICE LPL1-2/PM LPL1-2/LA EMCB/BC LPL1-2/BC NAME JHughey ABaxter KManloy*
HChernoff (w/
comment)
DATE 02/07/2008 02/07/2008 01/30/2008 02/07/2008 OFFICIAL RECORD COPY
Peach Bottom Atomic Power Station, Unit Nos. 2 and 3 cc:
Site Vice President Peach Bottom Atomic Power Station Exelon Generation Company, LLC 1848 Lay Road Delta, PA 17314 Plant Manager Peach Bottom Atomic Power Station Exelon Generation Company, LLC 1848 Lay Road Delta, PA 17314 Regulatory Assurance Manager Peach Bottom Atomic Power Station Exelon Generation Company, LLC 1848 Lay Road Delta, PA 17314 Chief Operating Officer (COO)
Exelon Nuclear Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Resident Inspector U.S. Nuclear Regulatory Commission Peach Bottom Atomic Power Station P.O. Box 399 Delta, PA 17314 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Mr. Roland Fletcher Department of Environment Radiological Health Program 2400 Broening Highway Baltimore, MD 21224 Correspondence Control Desk Exelon Generation Company, LLC 200 Exelon Way, KSA 1N1 Kennett Square, PA 19348 Director, Bureau of Radiation Protection Pennsylvania Department of Environmental Protection Rachel Carson State Office Building P.O. Box 8469 Harrisburg, PA 17105-8469 Board of Supervisors Peach Bottom Township 545 Broad Street Ext.
Delta, PA 17314-9203 Mr. Richard McLean Power Plant and Environmental Review Division Department of Natural Resources B-3, Tawes State Office Building Annapolis, MD 21401 Dr. Judith Johnsrud National Energy Committee Sierra Club 433 Orlando Avenue State College, PA 16803 Manager-Financial Control & Co-Owner Affairs Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, NJ 08038-0236 Manager Licensing-Peach Bottom Atomic Power Station Exelon Generation Company, LLC P.O. Box 160 Kennett Square, PA 19348 Vice President - Licensing and Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
Peach Bottom Atomic Power Station, Unit Nos. 2 and 3 cc:
Senior Vice President-Mid-Atlantic Operations Exelon Generation Company, LLC 200 Exelon Way, KSA 3-N Kennett Square, PA 19348 Senior Vice President - Operations Support Exelon Generation Company, LLC 200 Exelon Way, KSA 3-N Kennett Square, PA 19348 Director - Licensing and Regulatory Affairs Exelon Generation Company LLC Correspondence Control P.O. Box 160 Kennett Square, PA 19348 Associate General Counsel Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST FOR THE APPLICATION OF ALTERNATIVE SOURCE TERM AT PEACH BOTTOM ATOMIC POWER STATION, UNITS NO. 2 AND 3 DOCKET NOS. 50-277 AND 50-278 By letter dated July 13, 2007 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML072570151), Exelon Generation Company, LLC (the licensee),
submitted a License Amendment Request (LAR) for application of Alternative Source Term at Peach Bottom Atomic Power Station, Units 2 and 3. The Nuclear Regulatory Commission (NRC) staff has reviewed the LAR provided in the July 13, 2007, submittal. In order for the NRC staff to complete its evaluation, response to the following requests for additional information (RAI) questions is requested.
EMCB RAI 1 In reference to the main steam isolation valve (MSIV) leakage path, Table B, item 6.5, in of the LAR states that All piping credited is seismically analyzed to assure the piping wall integrity during and after a seismic (safe shutdown earthquake [SSE]) event.
Provide a description of piping systems that are credited in the proposed alternative source term (AST). For each effected piping system discuss the method for seismic qualification. Also clarify whether the Boiling Water Reactor Owners Group (BWROG) approach described in the GE topical report NEDC-31858P, "BWROG Report for Increasing MSIV Leakage Limits and Elimination of Leakage Control Systems, has been utilized in the proposed AST. If report NEDC-31858P has been utilized in the proposed AST, show how the nine limitations listed in the NRC staffs Safety Evaluation (ADAMS Accession No. ML010640286) of the topical report have been addressed.
EMCB RAI 2 On page 22 of Attachment 1 of the AST application, six items are listed as necessary for justifying the lack of redundancy of active components in the Standby Liquid Control (SLC) system. Item two (2) indicates the need for providing the design-basis conditions for each active component and the environmental and seismic conditions under which the component may be required to operate during a design-basis accident. Please provide the seismic conditions under which active component III-Remote switch RMS-2(3)-11A-S001 (page 27 of of the AST application) may be required to operate during a design-basis accident and describe how its seismic adequacy has been evaluated.
EMCB RAI 3 Verify whether there are any HVAC ducts, air handling units and/or other HVAC components that are credited in the proposed AST. If affirmative, discuss the methodology used for the HVAC seismic qualification.
Enclosure