L-PI-12-051, Day Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Re the Seismic Aspects of Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident

Day Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Re the Seismic Aspects of Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident

ML12163A570
Person / Time
Site:	Prairie Island
Issue date:	06/11/2012
From:	Molden J Northern States Power Co, Xcel Energy
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
L-PI-12-051
Download: ML12163A570 (2)

Text

/e Xcel EnergyB Prairie Island Nuclear Generating Plant 1717 Wakonade Drive East Welch, MN 55089-9642 June 11,2012 L-PI-12-051 10 CFR 50.54(f)

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Prairie Island Nuclear Generating Plant Units 1 and 2 Docket Nos. 50-282 and 50-306 Renewed License Nos. DPR-42 and DPR-60 PINGP 90-Dav Response to NRC Request for lnformation Pursuant to 10 CFR 50.54(f)

Regarding the Seismic Aspects of Recommendation 2.1 of the Near-Term Task Force Review of lnsinhts from the Fukushima Dai-ichi Accident

References:

I.NRC Letter, "Request for lnformation Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi AccidentJJdated March 12,2012, ADAMs Accession No. ML12056A046.

On March 12, 2012, the NRC Staff issued Reference Ito all NRC power reactor licensees and holders of construction permits in active or deferred status. Enclosure 1 and of the March 12, 2012 letter contains specific Requested Actions, Requested Information, and Required Responses associated with Recommendation 2.1, Seismic Evaluations.

Addressees were requested to provide a response within 90 days of the date of Reference 1 if an addressee cannot meet the requested response date, in accordance with 10 CFR 50.54(f).

Northern States Power Company, a Minnesota corporation, d/b/a Xcel Energy (NSPM), has determined that the Prairie Island Nuclear Generating Plant (PINGP) can meet the requested response dates for submitting the Seismic Hazard Evaluation, provided that the NRC and industry reach a mutual understanding of critical implementation details associated with calculating the seismic hazard by the end of July 2012. For example, the critical details that need to be mutually understood prior to commencement of the new seismic hazard evaluations include the elevation(s) at which the hazard or ground motion response spectrum (GMRS) will be calculated, and the development of site amplification factors for sites with limited soil and rock profile data.

Document Control Desk Page 2 Within 60 days of the date of the NRC's issuance of the Screening, Prioritization and Implementation Document (SPID), Enclosure Iof Reference 1 requests addressees to submit (1) its intention to follow the NRC-developed guidance, or (2) an alternative approach. In accordance with this request, NSPM plans to submit within 60 days of the issuance of the SPID: (1) its intention to follow the endorsed guidance, or (2) an alternative approach. At that time, NSPM will assess whether it can meet the submittal deadlines for the Seismic Risk Evaluation and take the appropriate regulatory action.

If there are any questions or if additional information is needed, please contact Ms. Jennie Eckholt, Licensing Engineer, at 612-330-5788.

Summary of Commitments This letter makes no new commitments and no revisions to existing commitments.

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

Executed on June 11,2012 James E. Molden

(/Site Vice President, Prairie Island Nuclear Generating Plant Northern States Power Company - Minnesota cc: Administrator, Region Ill, USNRC Director of Nuclear Reactor Regulation (NRR), USNRC NRR Project Manager, PINGP, USNRC Senior Resident Inspector, PINGP, USNRC