L-PI-08-092, Completion of Full Structural Weld Overlay in Response to Confirmatory Action Letter (CAL) NRR-07-024

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Completion of Full Structural Weld Overlay in Response to Confirmatory Action Letter (CAL) NRR-07-024
ML083080007
Person / Time
Site: Prairie Island Xcel Energy icon.png
Issue date: 10/21/2008
From: Wadley M
Northern States Power Co, Xcel Energy
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
L-PI-08-092, TAC MD4175, NRR-07-024
Download: ML083080007 (2)


Text

Xcel Energya OC-7 2 1 zoos U S Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Prairie Island Nuclear Generating Plant Unit 2 Docket 50-306 License No. DPR-60 Completion of Full Structural Weld Overlay in Response to Confirmatory Action Letter

[CAL) NRR-07-024 (TAC NO. MD4175)

Reference:

1) Nuclear Management Company, LLC (NMC) Letter No. L-PI-07-024, Dated March 14,2007 (ADAMS Accession No. ML070740366)
2) NRC CAL NRR-07-024, Dated March 27,2007 (ADAMS Accession No. ML070800476)

In Reference 2, the NRC issued the referenced CAL for Prairie Island Nuclear Generating Plant (PINGP) Unit 2. The CAL confirmed commitments made by NMC in Reference 1 regarding Alloy 821182 butt welds on the PINGP Unit 2 pressurizer surge line nozzle. In Reference 1, NMC made three commitments:

1. Until all Alloy 600182/182 Pressurizer butt welds are either mitigated or replaced, all Alloy 600/82/182 Pressurizer butt welds will be examined every other refueling cycle.
2. Until all Alloy 600/82/182 Pressurizer butt welds are either mitigated or replaced, reports of future inspection results and any mitigative or corrective actions will be submitted to the NRC within 60 days of the end of the station refueling outage during which the inspectionlmitigation was performed.
3. NMC will notify NRC in writing prior to making any changes to the revised Commitments 1 or 2.

With this letter Northern States Power Company, a Minnesota corporation (NSPM),

notifies the NRC (as requested in Reference 2) that the commitments made in Reference 1 are closed, since the Alloy 821182 pressurizer butt welds have been mitigated by the application of a full structural weld overlay.

1717 Wakonade Drive East Welch, Minnesota 55089-9642 Telephone: 651.388.1 121

Document Control Desk Page 2 Summary of Commitments This letter contains no new commitments and closes the three commitments made in Reference 1.

Michael D. Wadley Site Vice President d-Prairie Island Nuclear Generating Plant Northern States Power Company - Minnesota cc:

Administrator, Region Ill, USNRC Project Manager, Prairie Island, USNRC Resident Inspector, Prairie Island, USNRC