L-MT-24-028, Response to RCI for RR-017 ISI Impracticality
| ML24242A065 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 08/28/2024 |
| From: | Brown G Northern States Power Company, Minnesota, Xcel Energy |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-MT-24-028 | |
| Download: ML24242A065 (1) | |
Text
2807 West County Road 75 Monticello, MN 55362 August 28, 2024 L-MT-24-028 10 CFR 50.55a(g)(5)(iii)
ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Monticello Nuclear Generating Plant Docket No. 50-263 Renewed Facility Operating License No. DPR-22 Response to RCI for RR-017 ISI Impracticality (EPID L-2024-LLR-0014)
References:
- 1) NSPM letter to NRC, "10 CFR 50.55a Request RR-017: Inservice Inspection (ISI) Impracticality in Accordance with 10 CFR 50.55a(g)(5)(iii) during the Fifth Ten-Year Interval," dated January 30, 2024 (ADAMS Accession No. ML24033A295)
- 2) NRC email to NSPM, "Monticello - Final RCI for RR-017 ISI Impracticality (EPID L-2024-LLR-0014)," dated August 5, 2024 (ADAMS Accession No. ML24218A228)
Northern States Power Company, a Minnesota corporation, doing business as Xcel Energy (hereafter "NSPM") submitted a 10 CFR 50.55a(g)(5)(iii) request associated with the Monticello Nuclear Generating Plant Fifth Ten-Year Inservice Inspection Interval on January 30, 2024 (Reference 1). On August 5, 2024, the NRC requested a confirmation of information (RCI) (Reference 2). The enclosure to this letter provides NSPMs response to Reference 2.
Please contact Mr. Ron Jacobson at 612-330-6542 or ronald.g.jacobson@xcelenergy.com if there are any questions or if further information is needed.
fl Xcel Energy
Document Control Desk L-MT-24-028 Page 2 Summary of Commitments This letter makes no new commitments and no revisions to existing commitments.
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Gregory D. Brown Plant Manager, Monticello Nuclear Generating Plant Northern States Power Company - Minnesota Enclosure cc:
Administrator, Region Ill, USNRC Project Manager, Monticello, USNRC Resident Inspector, Monticello, USNRC
L-MT-24-028 NSPM Enclosure Page 1 of 2 RESPONSE TO REQUEST FOR CONFIRMATION OF INFORMATION FOR RR-017 ISI IMPRACTICALITY
1.0 BACKGROUND
Northern States Power Company, a Minnesota corporation, doing business as Xcel Energy (hereafter "NSPM") submitted a 10 CFR 50.55a(g)(5)(iii) request associated with the Monticello Nuclear Generating Plant Fifth Ten-Year Inservice Inspection Interval on January 30, 2024 (Reference 1). On August 5, 2024, the NRC identified the need for clarification (Reference 2). This enclosure provides NSPMs response to Reference 2.
2.0 RESPONSE TO REQUEST FOR CONFIRMATION OF INFORMATION (RCI)
The NRC RCI from Reference 2 is repeated in italics below.
RCI #RR-017-1 The staff requests that the licensee confirm the footnote for Table A of the Enclosure, in [Reference 1] is applicable to the N-3C NV weld. Further, the staff requests NSPM confirm one RI was detected during the 2019 exam for the N-3C NV weld, evaluated, and determined to be acceptable per IWB-3512-1, and that the statement in Section 6.2.1 on page 5 of the submittal enclosure, "For the examinations conducted, satisfactory results were achieved, and no flaw indications were detected," is in error. If necessary, please provide additional information to reconcile the apparent contradictory information between Table A and the quoted text in Section 6.2.1 on page 5 of the submittal enclosure.
Response to RCI #RR-017-1 The footnote for Table A of the Enclosure, Attachment 1 of Reference 1 is applicable to the N-3C NV weld (the N-3C NV line item, Indications Reported column of Table A).
One relevant indication (RI) was detected during the 2019 exam for the N-3C NV weld, evaluated, and determined to be acceptable per IWB-3512-1. The statement in Section 6.2.1 on page 5 of the Reference 1 enclosure is in error; specifically, it should reflect the same characterization that was provided in the initial paragraph of Section 6.2.4 which states that "no unacceptable flaws were identified."
L-MT-24-028 NSPM Enclosure Page 2 of 2
3.0 REFERENCES
- 1. NSPM letter to NRC, "10 CFR 50.55a Request RR-017: Inservice Inspection (ISI)
Impracticality in Accordance with 10 CFR 50.55a(g)(5)(iii) during the Fifth Ten-Year Interval," dated January 30, 2024 (ADAMS Accession No. ML24033A295)
- 2. NRC email to NSPM, "Monticello - Final RCI for RR-017 ISI Impracticality (EPID L-2024-LLR-0014)," dated August 5, 2024 (ADAMS Accession No. ML24218A228)