ML111390152
| ML111390152 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 05/23/2011 |
| From: | John Hughey Plant Licensing Branch 1 |
| To: | Pacilio M Exelon Generation Co |
| Hughey J, NRR/DORL, 301-415-3204 | |
| References | |
| TAC ME5394, TAC ME5395 | |
| Download: ML111390152 (4) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555*0001 May 23. 2011 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 - REQUEST FOR ADDITIONAL INFORMATION REGARDING RELIEF REQUEST 14R-52 CONCERNING ALTERNATIVES TO REACTOR VESSEL WELD EXAMINATIONS (TAC NOS. ME5394 AND ME5395)
Dear Mr. Pacilio:
By letter to the Nuclear Regulatory Commission (NRC) dated January 24,2011 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML110250147), Exelon Generation Company. LLC. (Exelon) submitted Relief Request 14R-52 for Peach Bottom Atomic Power Station (PBAPS). Units 2 and 3. The relief request would provide relief from the American Society of Mechanical Engineers Boiler and Pressure Vessel Code,Section XI.
"Rules for Inservice Inspection of Nuclear Power Plant Components." The relief request proposes an alternative to the requirements contained in Table lWB-2500-1 concerning nozzle to-vessel weld and nozzle inner radii examinations. The NRC staff has reviewed the relief request submitted by the licensee and determined that additional information is needed as set forth in the Enclosure.
The draft questions were sent to Mr. Tom Loomis. of 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 May 16, 2011, Mr. Loomis indicated that the licensee will submit a response by June 3, 2011. Please note that if you do not respond to this letter by the agreed-upon 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.
M. Pacilio
- 2 If you have any questions, please contact me at (301) 415-3204.
SincereIY,
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John D. Hughey, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278
Enclosure:
As stated cc w/encl: Distribution via ListServ
REQUEST FOR ADDITIONAL INFORMATION REGARDNG RELIEF REQUEST 14R-S2 CONCERNING NOZZLE-TO-VESSEL WELD AND INNER RADII EXAMINATIONS PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 DOCKET NOS. SO-277 AND 50-278 By letter to the Nuclear Regulatory Commission (NRC) dated January 24, 2011 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 1102S0147), Exelon Generation Company, LLC, (Exelon) submitted Relief Request 14R-S2 for Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3. The relief request would provide relief from the American SOciety of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),
Section XI, "Rules for Inservice Inspection of Nuclear Power Plant Components." The relief request proposes an alternative to the requirements contained in Table IWB-2500-1 concerning nozzle-to-vessel weld and nozzle inner radii examinations. The NRC staff has reviewed Exelon's submittal and determined that additional information, as described below, is needed to complete the review. to Relief Request 14R-52 lists inspection results for the nozzles for which an alternative is being requested. The NRC staff notes that all the inspection results listed are from the third or fourth inspection interval.
RAI-01
Clarify whether all the inspection results for the life of each unit are included or only those conducted in accordance with Appendix VIII to the ASME Code,Section XI, "Performance Demonstration for Ultrasonic Examination Systems."
RAI-02
Indicate which examinations listed in Enclosure 3 were conducted in accordance with Appendix VIII to the ASME Code,Section XI, "Performance Demonstration for Ultrasonic Examination Systems."
Enclosure
M. Padlio
-2 If you have any questions, please contact me at (301) 415-3204.
Sincerely, IRAI John D. Hughey, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278
Enclosure:
As stated cc w/encl: Distribution via ListServ DISTRIBUTION:
PUBLIC LPLI-2 RlF RidsNrrDorlDpr Resource RidsNrrLAABaxterResource RidsOgcRpResource RidsNrrDciCvib RidsRgn 1 MailCenterResource RidsNrrDorlLpl1-2Resource RidsNrrPMPeachBottomResource RidsAcrsAcnw_MailCTRResource ADAMS Accession No.: ML111390152 OFFICE LPL 1*2/PM LPL 1*2/LA NAME JHughey ABaxter **
DATE 5/23/2011