IR 05000461/2018091

Final Significance Determination of a White Finding with Assessment Follow Up and Notice of Violation; NRC Inspection Report No. 05000461/2018091

ML18053A851
Person / Time
Site:	Clinton
Issue date:	02/22/2018
From:	Khadijah West NRC/RGN-III
To:	Bryan Hanson Exelon Generation Co, Exelon Nuclear
Lambert K
References
EA-17-203 IR 2018091
Download: ML18053A851 (5)

Text

February 22, 2018

SUBJECT:

CLINTON POWER STATION - FINAL SIGNIFICANCE DETERMINATION OF A WHITE FINDING WITH ASSESSMENT FOLLOW UP AND NOTICE OF VIOLATION; NRC INSPECTION REPORT NO. 05000461/2018091

Dear Mr. Hanson:

This letter provides you the final significance determination of the preliminary White finding discussed in U.S. Nuclear Regulatory Commission (NRC) Inspection Report No. 05000461/2017011, dated January 26, 2018. A copy of the inspection report can be found in the NRC's Public Document Room or from the NRC's Agencywide Documents Access and Management System (ADAMS), accessible from the NRC's website at http://www.nrc.gov/reading-rm/adams.html under accession number ML18026A965. This finding involved the failure to correct a degraded condition identified as a result of the Division 3 Service Water (SX) pump failure in 2014 as required by Title 10 of the Code of Federal Regulations (CFR) Part 50, Appendix B, Criterion XVI, "Corrective action." The Division 3 SX pump is a component subject to the requirements of 10 CFR 50, Appendix B. The failure to correct the identified degraded condition involving corrosion of the SX pump sleeve resulted in the failure of the Division 3 SX pump to start on June 15, 2017. The sleeve corrosion resulted in the SX pump being unable to perform its intended safety function and becoming inoperable for a time longer than its technical specification allowed outage time.

In a letter dated February 2, 2018, your staff indicated that the Clinton Power Station did not contest the characterization of the risk significance of this finding. Additionally, the letter indicated that the Clinton Power Station declined the opportunity to discuss this issue in a Regulatory Conference or to provide a written response. According to NRC Inspection Manual Chapter (IMC) 0609, appeal rights only apply to those licensees that have either attended a Regulatory Conference or submitted a written response to the preliminary determination letter.

After considering the information developed during the inspection, the NRC has concluded that the finding is appropriately characterized as White, a finding of low to moderate safety significance.

The NRC has also determined that the failure to co rrect the degraded con dition associated with the Division 3 SX pump is a violation of 10 CFR Part 50, Appendix B, Criterion XVI and technical specifications as cited in the enclosed Notice of Violation (Notice). The circumstances surrounding the violation were described in detail in Inspection Report No. 05000461/2017011.

In accordance with the NRC Enforcement Policy, the Notice is considered escalated enforcement action because it is associated with a White finding. The NRC has concluded that the information regarding the reason for the violation, the corrective actions taken and planned to correct the violation and prevent recurrence, and the date when full compliance was achieved is al ready adequately addressed on the docket in NRC Inspection Report No. 05000461/2017011. Therefore, you are not required to respond to this letter unless the description therein does not accura tely reflect your corrective actions or your position.

As a result of our review of Clinton Power Station's performance, including this White finding, we have assessed the Clinton Power Station to be in the Regulatory Response column of the NRC's Action Matrix, effective the fourth quarter of 2017. Therefore, we plan to conduct a supplemental inspection using Inspection Procedure 95001, "Supplemental Inspection Response To Action Matrix Column 2 Inputs," when your staff has notified us of your readiness for this inspection. This inspection procedure is conducted to provide assurance that the root cause and contributing cause of risk significant performance issues are understood, the extent of condition and the extent of cause are identified, and the corrective actions are sufficient to

prevent recurrence.

In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter, its enclosure, and your response, if you choose to provide one, will be made available electronically for public inspection in the NRC Public Document Room or from the NRC's document system (ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html. To the extent possible, your response should not include any personal privacy, proprietary, or safeguards information so that it can be made available to the Public without redaction.

Sincerely,

/RA/ K. Steven West

Regional Administrator

Docket No. 050-00461 License No. NPF-62

Enclosure:

Notice of Violation

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