NG-18-0099, Revision to Generic Schedule Provided in NEI 13-12, Open Phase Condition Industry Guidance Document

Revision to Generic Schedule Provided in NEI 13-12, Open Phase Condition Industry Guidance Document

ML18241A090
Person / Time
Site:	Duane Arnold
Issue date:	08/13/2018
From:	Dean Curtland NextEra Energy Duane Arnold
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NG-18-0099
Download: ML18241A090 (1)

Text

NEXTeraM.

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August 13, 2018 NG-18-0099 U. S. Nuclear Regulatory Commission A TIN: Document Control Desk Washington, DC 20555-0001 Duane Arnold Energy Center Docket No. 50-331 Renewed Op. License No. DPR-49

References:

1) Letter, Rich Anderson (NextEra Energy Duane Arnold, LLC) to U.S.

NRC, NextEra Energy Duane Arnold, LLC Response to Request for Additional Information Regarding NRG Bulletin 2012-01, Design Vulnerability in Electric Power System, NG-14-0032, Date January 30, 2014 (ML14034A107)

Revision to Generic Schedule Provided in NEI 13-12, Open Phase Condition Industry Guidance Document In Reference 1, NextEra Energy Duane Arnold, LLC (NextEra) stated the Open Phase Condition (OPC) Detection would be addressed in accordance with the Nuclear Energy Institute voluntary initiative. Subsequent to that time, NextEra has announced plans to permanently cease power operations no later than December 31, 2020, subject to certain regulatory reviews and approvals.

This letter is to notify NRG that NextEra will not be installing OPC Detection automatic lockout and its associated trip function during the September 2018 Refueling Outage in accordance with the previously stated schedule. Modifications to install automatic detection and control room alarms are currently being completed as originally scheduled. In addition, NextEra will continue to perform the interim corrective actions specified in Reference 1 throughout the remaining period of power operations.

If material conditions change as a result of the pending regulatory reviews and approvals, a new schedule for installing OPC Detection will be provided. If you have any questions or require additional information, please contact Mike Davis, Licensing Manager at (319) 851-7032.

fJ~ddC Dean Curtland Site Director, Duane Arnold Energy Center NextEra Energy Duane Arnold, LLC cc: Administrator, Region Ill, USNRC Project Manager, DAEC, USNRC

• Senior Resident Inspector, DAEC, USNRC NextEra Energy Duane Arnold, LLC, 3277 DAEC Road, Palo, IA 52324