U-604541, Change to Commitment Schedule to Implement Nuclear Energy Institute (NEI) Initiative on Open Phase Condition

Change to Commitment Schedule to Implement Nuclear Energy Institute (NEI) Initiative on Open Phase Condition

ML20115E288
Person / Time
Site:	Clinton
Issue date:	04/09/2020
From:	Chalmers T Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
U-604541
Download: ML20115E288 (3)

Text

Clinton Power Station

~ Exelon Generation 8401 Power Road Clinton, IL 61727 U-604541 April 9, 2020 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, MD 20852 Clinton Power Station, Unit 1 Facility Operating License No. NPF-62 NRC Docket No. 50-461

Subject:

Change to Commitment Schedule to Implement Nuclear Energy Institute (NEI)

Initiative on Open Phase Condition

References:

1. U.S. Nuclear Regulatory Commission Letter, "Design Vulnerability in Electric Power System," NRC Bulletin 2012-01, dated July 12, 2012 (ML12074A115)

2. Letter from K. R. Jury (EGC) to NRC, "Exelon Generation Company, LLC 90-Day Response to NRC Bulletin 2012-01, "Design Vulnerability in Electric Power System," dated October 25, 2012 (ML12300A106)

3. Letter from David M. Gullatt (EGC) to NRC, "Exelon Generation Company, LLC Additional Information Regarding Response to NRC Bulletin 2012-01, Design Vulnerability in Electric Power System," dated February 3, 2014 (ML14034A179)

4. Nuclear Energy Institute to U.S. Nuclear Regulatory Commission Industry Initiative on Open Phase Condition, Revision 3, dated June 6, 2019 (ML19163A176)

5. Letter from Thomas D. Chalmers to NRC, "Change to Commitment Schedule to Implement Nuclear Energy Institute (NEI) Initiative on Open Phase Condition,"

dated December 30, 2019 (U-604525)

In response to NRC Bulletin 2012-01, Reference 1, th~ Nuclear Energy Institute (NEI) organized an industry initiative to address the identified design vulnerability. The industry Open Phase Condition (OPC) initiative, Reference 4, identified several actions that licensees should complete by December 31, 0219. Clinton notified the NRC, Reference 5, that an extension to May 15, 2020 was needed to allow for completion of necessary implementation activities.

The purpose of this letter is to notify the NRC of changes to the implementation schedule for the OPC Initiative actions for Clinton Power Station (CPS), Unit 1. Specifically, CPS is extending the implementation for completing actions associated with the NEI Initiative on Open Phase Condition to C1 R20 currently scheduled to begin in September 2021. The extension to C 1R20, will allow for implementation of activities involving abandonment of the Static VAR Compensators that will affect initiative actions as described in Reference 4.

U-604541 U.S. Nuclear Regulatory Commission Page 2 This commitment change was processed in accordance with the Nuclear Energy Institute guidance for deviations to the Open Phase Condition initiative and NEI 99-04, "Guidelines for Managing NRC Commitment Changes." The attachment describes the revised commitment.

No new regulatory commitments are made in this letter. Changes to existing regulatory commitments are provided in the attachment.

• Should you have any questions concerning this change in commitment schedule, please contact Mr. Dale Shelton, Regulatory Assurance Manager, at (217) 937-2800.

Respectfully,

~

Thomas D. Chalmers Site Vice President Clinton Power Station

Attachment:

Summary of Regulatory Commitments cc:

NRC Regional Administrator - Region Ill NRC Senior Resident Inspector - Clinton Power Station Office of Nuclear Facility Safety - Illinois Emergency Management Agency

ATTACHMENT Summary of Regulatory Commitments The following list identifies those actions committed to by Exelon Generation Company, LLC, (EGG) for Clinton Power Station. Any other actions discussed in the submittal represent intended or planned actions by EGG, are described only for information, and are not regulatory commitments.

Current Commitment Type Revised Commitment One-Time Action Programmatic Commitment (Yes/No) (Yes/No)

Full implementation Full implementation No Yes of the NEI Open of the NEI Open Phase Initiative by Phase Initiative by May 15, 2020. Completion of C1R20