ML15079A066

EN-15-009, Issuance of Final Significance Determination and Notice of Violation for Exelon Generation Company, LLC, Dresden Nuclear Power Station, Unit 3, (EA-15-001)

ML15079A066
Person / Time
Site:	Dresden
Issue date:	03/20/2015
From:	Hanley K, Wray J NRC/OE
To:
Hanley K
References
EA-15-001 EN-15-009
Download: ML15079A066 (2)

Text

March 20, 2015 EN 15-009 OFFICE OF ENFORCEMENT NOTIFICATION OF SIGNIFICANT ENFORCEMENT ACTION Licensee: Exelon Generation Company, LLC EA-15-001 Dresden Nuclear Power Station, Unit 3 Docket No.: 50-249

Subject:

ISSUANCE OF FINAL SIGNIFICANCE DETERMINATION AND NOTICE OF VIOLATION This is to inform the Commission that a Notice of Violation (NOV) associated with a White Significance Determination Process finding will be issued on or about March 26, 2015, to Exelon Generation Company, LLC (licensee) as a result of an inspection at Dresden Nuclear Power Station, Unit 3 (Dresden 3). The White finding, an issue of low to moderate safety significance, will result in additional NRC inspection and potentially other NRC action.

The White finding involved the licensees failure to establish measures for the selection, and review for suitability of application of materials, parts, equipment, and processes that are essential to the safety-related functions of the structures, systems, and components involving the Dresden 3 Automatic Depressurization System (ADS). Specifically, from November 29, 2010, to November 6, 2014, the licensee failed to establish measures to ensure that the application of the ADS electromatic relief valve (ERV) actuators remained suitable for operation.

This resulted in multiple failures of the ERV 3E during testing prior to operating cycle D3C23, and an indeterminate period of inoperability and unavailability greater than allowed by Technical Specifications during operating cycle D3C23. The ERV 3E inoperability during the operating cycle was identified after the failure of the valve during its first operational test following unit shutdown for refueling.

A NOV is included based on the licensees failure to establish measures for the selection, and review for suitability of application of materials, parts, equipment, and processes that are essential to the safety-related functions of the structures, systems, and components in accordance with 10 CFR 50, Appendix B, Criterion III, Design Control.

On March 2, 2015, the licensee declined the opportunity to discuss this issue in a Regulatory Conference or to provide a position on the finding and violation in writing.

The licensee has not yet been informed of the specific nature of the enforcement action. The schedule of issuance and notification is:

Mailing of Final Significance Determination March 26, 2015 Telephone Notification of Licensee March 26, 2015 The State of Illinois will be notified.

CONTACTS: Kyle Hanley, OE, (301) 415-1975 John Wray, OE, (301) 415-1288

Distribution: EN-15-009, March 20, 2015 OWFN OWFN TWFN 3WFN Regional Offices Chairman Burns EDO OCFO NMSS RI RII Comm. Svinicki DEDR OIS NSIR RIII RIV Comm. Ostendorff DEDMRT RES OP Center Comm. Baran OE ACRS MAIL SECY OGC NRO ADAMS OCA NRR OE staff OPA OI OIP OIG Electronic DISTRIBUTION:

P. Holahan, OE N. Hilton, OE J. Wray, OE K. Hanley, OE OE r/f EN binder X PUBLIC X NON-SENSITIVE ADAMS ML15079A066 OFFICE OE:ES OE: BC NAME KHanley JWray DATE 3/17/2015 3/18/2015 OFFICIAL RECORD COPY