IR 05000454/2018006

Annual Assessment Letter for Byron Station, Units 1 and 2 (Report 05000454/2018006 and 05000455/2018006)

ML19063B581
Person / Time
Site:	Byron
Issue date:	03/04/2019
From:	Hironori Peterson Region 3 Branch 3
To:	Bryan Hanson Exelon Generation Co, Exelon Nuclear
References
IR 2018006
Download: ML19063B581 (6)

Text

March 4, 2019

Mr. Bryan C. Hanson Senior VP, Exelon Generation Company, LLC President and CNO, Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555

SUBJECT: ANNUAL ASSESSMENT LETTER FOR BYRON STATION, UNITS 1 AND 2 (REPORT 05000 454/20 18 00 6 AND 0 5000455/20 18 00 6) Dear Mr. Hanson

The NRC has completed its end

-of-cycle performance assessment of Byron Station, Units 1 and 2 , reviewing performance indicators (PIs)

, inspection results , and enforcement actions from January 1, 20 18 through December 31, 20 1 This letter informs you of the NRC's assessment of your facility during this period and its plans for future inspections at your facilit The NRC concluded that overall performance at your facility preserved public health and safet The NRC determined the p erformance at Byron Station, Units 1 and 2 , during the most recent quarter was within the Licensee Response Column, the highest performance category of the NRC's Reactor Oversight Process (ROP) Action Matrix

, because all inspection findings had very low safety significance (i.e., Green), and all PIs were within the expected range (i.e., Green). Therefore, the NRC plans to conduct ROP baseline inspections at your facility

. The enclosed inspection plan lists the inspections scheduled through December 31

, 20 2 This updated inspection plan now includes planned security inspections which were formerly transmitted under separate correspondenc The NRC provides the inspection plan to allow for the resolution of any scheduling conflicts and personnel availability issue Routine inspections performed by resident inspectors are not included in the inspection pla You should be aware that the agency is pursuing potential changes to the ROP, including changes to engineering inspections (SECY

-18-0113, "Recommendations for Modifying the Reactor Oversight Process Engineering Inspections"). Should these changes to the ROP be implemented, the engineering and other region

-based inspections are subject to change in scope, as well as schedule, beginning in January 202 The inspections listed during the last twelve months of the inspection plan are tentative and may be revise The NRC will contact you as soon as possible to discuss changes to the inspection plan should circumstances warrant any change B. Hanson - 2 - This letter, its enclosure, and your response (if any) will be made available for public inspection and copying at http://www.nrc.gov/reading

-rm/adams.html and at the NRC Public Document Room in accordance with 10 CFR 2.390, "Public Inspections, Exemptions, Requests for Withholding."

Please contact me at 630-829-9707 with any questions you have regarding this lette

Sincerely,/RA/ Hironori Peterson, Chief Branch 3 Division of Reactor Projects Docket No ; 50-455 License No NPF-37; NPF-66

Enclosure:

Inspection Plan cc: Distribution via LISTSERV