L-PI-25-043, Supplement to 10 CFR 50.55a, Request Nos. 1-RR-5-16 and 2-RR-5-16, Proposed Alternative to Conditions for Applying Code Case N-513-5
| ML25259A243 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 09/16/2025 |
| From: | Currier B Nuclear Management Co |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| L-PI-25-043 | |
| Download: ML25259A243 (1) | |
Text
1717 Wakonade Drive Welch, MN 55089 September 16, 2025 L-PI-25-043 10 CFR 50.55a ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Prairie Island Nuclear Generating Plant Units 1 and 2 Docket Nos. 50-282 and 50-306 Renewed Facility Operating License DPR-42 and DPR-60 Supplement to 10 CFR 50.55a Request Nos. 1-RR-5-16 and 2-RR-5-16, Proposed Alternative to Conditions for Applying Code Case N-513-5, "Evaluation Criteria for Temporary Acceptance of Flaws in Moderate Energy Class 2 or 3 Piping and Gate ValvesSection XI, Division 1"
Reference:
- 1) NSPM Letter L-PI-25-041, 10 CFR 50.55a Request Nos. 1-RR-5-16 and 2-RR-5-16, Proposed Alternative to Conditions for Applying Code Case N-513-5, "Evaluation Criteria for Temporary Acceptance of Flaws in Moderate Energy Class 2 or 3 Piping and Gate ValvesSection XI, Division 1," dated September 11, 2025. (NRC Agencywide Documents Access and Management System Accession Number ML25254A252)
In Reference 1, Northern States Power Company, a Minnesota corporation, doing business as Xcel Energy (hereafter "NSPM"), requested U.S. Nuclear Regulatory Commission (NRC) authorization of an alternative to the requirements of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section XI, 2007 Edition through 2008 Addenda for the Prairie Island Nuclear Generating Plant (PINGP) Unit 1 and Unit 2. Specifically, NSPM proposed an alternative to the conditions for applying Code Case N-513-5 to a flaw in the moderate energy Class 3 cooling water system line.
The Enclosure to Reference 1 included Figure 1 (a photograph of the as-found flaw), which was labeled, "Figure 1: Image of initially reported flaw from 12/18/25." Figure 1 should have been labeled, "Figure 1: Image of initially reported flaw from 12/18/24." Enclosed herein is a supplement to Reference 1 with a corrected Figure 1.
Summary of Commitments This letter makes no new commitments and no revisions to existing commitments.
Document Control Desk L-Pl-25-043 Page 2 If there are any questions or if more information is needed, please contact Mr. Jeff Kivi at 612-330-5788 or Jeffrey.L.Kivi@xcelenergy.com.
Bryan Plant Manager, Prairie Island Nuclear Generating Plant Northern States Power Company - Minnesota Enclosure cc:
Administrator, Region Ill, USNRC Project Manager, Prairie Island, USNRC Resident Inspector, Prairie Island, USNRC
L-PI-25-043 NSPM Enclosure Page 1 of 1 Supplement to Figure 1 10 CFR 50.55a Request 1-RR-5-16 (PINGP Unit 1) 10 CFR 50.55a Request 2-RR-5-16 (PINGP Unit 2)
Proposed Alternative to Reactor Vessel Inservice Inspection (ISI) Intervals Proposed Alternative in Accordance with 10 CFR 50.55a(z)(2)
Hardship or Unusual Difficulty without Compensating Increase in Level of Quality or Safety Figure 1: Image of initially reported flaw from 12/18/24.