ML081280339
| ML081280339 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 05/06/2008 |
| From: | Pederson C Division Reactor Projects III |
| To: | Pardee C Exelon Generation Co |
| References | |
| Download: ML081280339 (4) | |
Text
May 6, 2008 Mr. Charles G. Pardee Chief Nuclear Officer and Senior Vice President Exelon Generation Company, LLC 4300 Winfield Road Warrenville IL 60555
SUBJECT:
ASSESSMENT FOLLOWUP LETTER - BYRON STATION, UNITS 1 AND 2
Dear Mr. Pardee:
On May 1, 2008, the NRC staff completed, as part of our continuous review, an update of our assessment of the Byron Nuclear Power Plant, Units 1 and 2. The assessment evaluated performance indicators (PIs) and inspection results. The purpose of this letter is to inform you of your safety performance during this period and our plans for a future inspection at your facility. This letter supplements, but does not supersede, our end-of-cycle assessment letter issued on March 3, 2008.
On April 1, 2008, the NRC staff forwarded a letter concerning the final significance determination of a White inspection finding in the initiating events cornerstone. This White finding involved a violation of 10 CFR 50, Appendix B, Criterion XVI, Corrective Action, associated with a failure to take timely corrective actions after identification of corroded essential service water system riser pipes. Specifically, you failed to take timely actions to address the external corrosion layer present on the riser pipes. Consequently, the plant was operated for an extended period with a substantial loss of pipe wall thickness. Subsequently, the corrosion proceeded to the point that a through-wall leak developed.
As a result of this white finding, we have assessed Byron Nuclear Power Plant Units 1 and 2 performance to be within the regulatory response column of the NRCs Action Matrix.
Therefore, in addition to the baseline inspections, we plan to conduct Supplemental Inspection 95001, "Inspection for One or Two White Inputs in a Strategic Performance Area," following completion of your root cause analysis and implementation of corrective actions. This inspection procedure is conducted to provide assurance that the root causes and contributing causes of risk significant performance issues are understood, the extent of cause and condition are identified, and the corrective actions are sufficient to prevent recurrence. Please notify Richard Skokowski at 630-829-9620 once you have completed your root cause analysis and when you are ready for our supplemental inspection to occur.
C. Pardee In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter will be made available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRC's document system (ADAMS).
ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Please contact Richard Skokowski with any questions you may have regarding this letter.
Sincerely,
/RA/
Cynthia D. Pederson, Director Division of Reactor Projects Docket Nos. 50-454; 50-455 License Nos. NPF-37; NPF-66 cc:
Site Vice President - Byron Station Plant Manager - Byron Station Regulatory Assurance Manager - Byron Station Chief Operating Officer and Senior Vice President Senior Vice President - Midwest Operations Senior Vice President - Operations Support Vice President - Licensing and Regulatory Affairs Director - Licensing and Regulatory Affairs Manager Licensing - Braidwood, Byron, and LaSalle Associate General Counsel Document Control Desk - Licensing Assistant Attorney General Illinois Emergency Management Agency J. Klinger, State Liaison Officer, State of Illinois P. Schmidt, State Liaison Officer, State of Wisconsin Chairman, Illinois Commerce Commission B. Quigley, Byron Station President, Village of Leaf River President, Village of Davis Junction President, Village of Stillman Valley Ogle County Board Chairman Ogle County Sheriff/EMA Coordinator EMA Coordinator, Winnebago County Winnebago County Board Chair Winnebago County Sheriff/ESDA Mayor of Oregon Mayor of Byron President, Village of Mt. Morris Mayor of Rochelle G. Mortensen, INPO
C. Pardee In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter will be made available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRC's document system (ADAMS).
ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Please contact Richard Skokowski with any questions you may have regarding this letter.
Sincerely, Cynthia D. Pederson, Director Division of Reactor Projects Docket Nos. 50-454; 50-455 License Nos. NPF-37; NPF-66 cc w/encl:
Site Vice President - Byron Station Plant Manager - Byron Station Regulatory Assurance Manager - Byron Station Chief Operating Officer and Senior Vice President Senior Vice President - Midwest Operations Senior Vice President - Operations Support Vice President - Licensing and Regulatory Affairs Director - Licensing and Regulatory Affairs Manager Licensing - Braidwood, Byron, and LaSalle Associate General Counsel Document Control Desk - Licensing Assistant Attorney General Illinois Emergency Management Agency J. Klinger, State Liaison Officer, State of Illinois P. Schmidt, State Liaison Officer, State of Wisconsin Chairman, Illinois Commerce Commission B. Quigley, Byron Station President, Village of Leaf River President, Village of Davis Junction President, Village of Stillman Valley Ogle County Board Chairman Ogle County Sheriff/EMA Coordinator EMA Coordinator, Winnebago County Winnebago County Board Chair Winnebago County Sheriff/ESDA Mayor of Oregon Mayor of Byron President, Village of Mt. Morris Mayor of Rochelle G. Mortensen, INPO DOCUMENT NAME: G:\\Byron\\Byron Assessment Followup Letter.doc Publicly Available Non-Publicly Available Sensitive Non-Sensitive To receive a copy of this document, indicate in the concurrence box "C" = Copy without attach/encl "E" = Copy with attach/encl "N" = No copy OFFICE RIII RIII RIII NAME JDalzell:dtp
- RAS for RSkokowski CPederson DATE 05/05/08 05/05/08 05/06/08 OFFICIAL RECORD COPY
Letter to C. Pardee from C. Pederson dated May 6, 2008
SUBJECT:
ASSESSMENT FOLLOWUP LETTER - BYRON STATION, UNITS 1 AND 2 DISTRIBUTION:
RAG1 TEB MMT RidsNrrDirslpab JLC1 MAS KGO RML2 SRI Byron DRPIII DRSIII PLB1 TXN