L-2021-105, Response to Request for Additional Information for St. Lucie License Amendment Request to Allow Risk Informed Completion Times (RICT) for the 120-Volt AC Instrument Bus Requirements

Response to Request for Additional Information for St. Lucie License Amendment Request to Allow Risk Informed Completion Times (RICT) for the 120-Volt AC Instrument Bus Requirements

ML21133A002
Person / Time
Site:	Saint Lucie
Issue date:	05/12/2021
From:	Deboer D Florida Power & Light Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
L-2021-105
Download: ML21133A002 (8)

Text

May 12, 2021 L-2021-105 10 CFR 50.90 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 RE: St. Lucie Nuclear Plant, Units 1 and 2 Docket Nos. 50-335 and 50-389 Renewed Facility Operating Licenses DPR-67 and NPF-16 Response to Request for Additional Information for St. Lucie License Amendment Request to Allow Risk Informed Completion Times (RICT) for the 120-Volt AC Instrument Bus Requirements

References:

1. Florida Power & Light Company letter L-2020-164, License Amendment to Allow Risk Informed Completion Times (RICT) for the 120-Volt AC Instrument Bus Requirements, December 21, 2020 (ADAMS Accession No. ML20356A162)

2. NRR Email Capture, NRR/DORL N. Jordan to FPL W. Godes, Requests For Additional Information Regarding License Amendment Requests to Apply Risk Informed Completion Times (RICT) for the 120-Volt AC (L-2020-LLA-0283), April 28, 2021 In Reference 1, Florida Power & Light Company (FPL) requested amendments to Renewed Facility Operating License Nos. DPR-67 and NPF-16 for St. Lucie Nuclear Plant Units 1 and 2 (St. Lucie), respectively. The proposed license amendments revise the St. Lucie Operating Licenses (OL) and Technical Specifications (TS) to permit the application of risk-informed completion times (RICT) for the 120-Volt AC Instrument Bus requirements, consistent with TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times RITSTF Initiative 4b".

In Reference 2, the NRC requested a selection of plant drawings determined necessary to complete its review. The enclosure to this letter provides the requested plant drawings. The information provided in this letter clarifies the application, does not expand the scope of the application as originally noticed, and should not change the NRC staff's original proposed no significant hazards consideration determination as published in the Federal Register.

This letter contains no new regulatory commitments.

Florida Power & Light Company 6501 S. Ocean Drive, Jensen Beach, FL 34957

St. Lucie Nuclear Plant, Units 1 and 2 L-2021-105 Docket Nos. 50-335 and 50-389 Page 2 of 2 Should you have any questions regarding this submittal, please contact Mr. Wyatt Gades, St. Lucie Licensing Manager, at (772) 467-7435.

I declare under penalty of perjury that the foregoing is true and correct.

Executed on M"'-)11'., '60l.J Sincerely, Daniel DeBoer Site Vice President St. Lucie Nuclear Plant DD/jam/res Enclosure cc: USNRC Regional Administrator, Region II USNRC Project Manager, St. Lucie Nuclear Plant, Units 1 and 2 USNRC Senior Resident Inspector, St. Lucie Nuclear Plant, Units 1 and 2 Ms. Cindy Becker, Florida Department of Health

St. Lucie Nuclear Plant, Units 1 and 2 L-2021-105 Docket Nos. 50-335 and 50-389 Enclosure Page 1 of 6 License Amendment to Allow Risk Informed Completion Times (RICT) for the 120-Volt AC Instrument Bus Requirements Response to Requests for Additional Information In Reference 1, FPL requested amendments to Renewed Facility Operating License Nos. DPR-67 and NPF-16 for St. Lucie. The proposed license amendments revise the St. Lucie Operating Licenses and Technical Specifications to permit the application of risk-informed completion times (RICT) for the 120-Volt AC Instrument Bus requirements, consistent with TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times RITSTF Initiative 4b".

In Reference 2, the NRC requested a selection of plant drawings determined necessary to complete their review. Specifically, the requests were for the one-line drawings showing normal and alternate source power feeds to St. Lucie 120 V A.C. Instrument buses 1/2 MA/B/C/D. As requested, the plant drawings listed below are provided in this supplement to the license amendment request (LAR) provided in Reference 1:

St. Lucie Unit 1

• 8770-G-332 Sheet 1, 480 V Miscellaneous, 125V D-C and Vital A-C One Line, Revision 29

• 8770-G-332 Sheet 2, 480V Miscellaneous, 125V DC and Vital AC One Line, Revision 6 St. Lucie Unit 2

• 2998-G-332 Sheet 1, 480V Miscellaneous, 125V D-C and Vital A-C One Line, Revision 19

• 2998-G-332 Sheet 2, 480 V Miscellaneous, 125V D-C and Vital A-C One Line, Revision 8

References:

1. Florida Power & Light Company letter L-2020-164, License Amendment to Allow Risk Informed Completion Times (RICT) for the 120-Volt AC Instrument Bus Requirements, December 21, 2020 (ADAMS Accession No. ML20356A162)

2. NRR Email Capture, NRR/DORL N. Jordan to FPL W. Godes, Requests For Additional Information Regarding License Amendment Requests to Apply Risk Informed Completion Times (RICT) for the 120-Volt AC (L-2020-LLA-0283), April 28, 2021

St. Lucie Nuclear Plant, Units 1 and 2 L-2021-105 Docket Nos. 50-335 and 50-389 Enclosure Page 2 of 6 License Amendment to Allow Risk Informed Completion Times (RICT) for the 120-Volt AC Instrument Bus Requirements Response to Requests for Additional Information (4 pages follow)