L-PI-13-038, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Seismic Aspects of Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident

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

ML13120A058
Person / Time
Site:	Prairie Island
Issue date:	04/29/2013
From:	Jeffery Lynch Northern States Power Co, Xcel Energy
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
L-PI-13-038
Download: ML13120A058 (3)

Text

Xcel Energy@ Prairie Island Nuclear Generating Plant 1717 Wakonade Drive East Welch, MN 55089 L-PI-13-038 APR 29 2013 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's Response to NRC Request for Information Pursuant to 10 CFR 50.54(f)

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

References:

1. NRC Letter, "Request for Information 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 Accident," dated March 12,2012, ADAMS Accession No. ML12056A046.

2. Federal Register, Vol. 78, No. 38, Tuesday, February 26,2013, pp. 13097-13099.

3. Nuclear Energy Institute (NEI) letter to NRC, "Proposed Path Forward for NTTF Recommendation 2.1: Seismic Reevaluations," dated April 9, 2013, ADAMS Accession No. ML13101A379.

4. Electric Power Research Institute (EPRI) Report Number 1025287, "Seismic Evaluation Guidance: Screening, Prioritization and Implementation Details (SPID) for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic," dated November 2012, ADAMS Accession No. ML12333A170.

5. NSPM Letter to NRC, "PINGP 90-Day Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Seismic Aspects of Recommendation 2.1 of Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident," dated June 11,2012.

On March 12,2012, the NRC Staff issued Reference 1 to all NRC power reactor licensees and holders of construction permits in active or deferred status. Enclosure 1 of Reference 1 contains specific Requested Actions, Requested Information, and

Document Control Desk Page 2 Required Responses associated with Near-Term Task Force (NTTF) Recommendation 2.1, Seismic Evaluations. Enclosure 1 of Reference 1 states that within 60 days of the date of the NRC's issuance of guidance on screening and prioritization criteria, and the implementation details of the risk assessment, each licensee is requested to submit: (1) its intention to follow the NRC-developed guidance, or (2) an alternative approach, including acceptance criteria. On February 26, 2013 an NRC Staff letter was published in the Federal Register (Reference 2) endorsing EPRI-1025287, "Seismic Evaluation Guidance: Screening, Prioritization and Implementation Details (SPID) for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic," dated November 2012 (Reference 4), with clarifications described in the Reference 2 Notice.

In accordance with Reference 2, this letter provides the required 60-day response to NTTF Recommendation 2.1, Seismic Evaluations, for the Northern States Power Company, a Minnesota corporation, d/b/a Xcel Energy (NSPM), on behalf of the Prairie Island Nuclear Generating Plant (PINGP). NSPM intends to follow the NRC endorsed Reference 4 guidance as the approach for developing the NTTF Recommendation 2.1 seismic risk evaluation and the augmented approach guidance described in Reference 3, if the reevaluated seismic hazard is not bounded by the current design basis.

Additionally, in Reference 5, NSPM indicated that once the developed guidance was issued, it would assess whether it can meet the submittal deadlines for the seismic risk evaluation and take appropriate regulatory action. As provided in Reference 5, NSPM is submitting this letter to address the submittal deadlines for the seismic risk evaluation.

NSPM will complete the following actions per the schedule provided in Attachment 2 of Reference 3.

1) Submit the information identified in Items 3.a and 3.b for base case velocity profile and the description of subsurface materials and properties in Section 4 of Reference 4.

2) Submit the remaining information described in Section 4 of Reference 4.

If there are any questions or if additional information is needed, please contact Ms.

Jennie Eckholt, Licensing Engineer, at 612-330-5788.

Document Control Desk Page 3 Summary of Commitments This letter proposes the following new commitments and no revisions to existing commitments.

Regulatory Commitments Due Date 1 NSPM will submit the information identified in Items 3.a and September 12,2013 3.b for base case velocity profile and the description of subsurface materials and properties in Section 4 of EPRI Report 1025287.

2 NSPM will submit the remaining information described in March 31,2014 Section 4 of EPRI Report 1025287.

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

Executed on yP 03 James . Lynch Site Vice President, Prairie Island Nuclear Generating Plant Northern States Power Company - Minnesota cc: Administrator, Region "I, USNRC Director of Nuclear Reactor Regulation (NRR), USNRC NRR Project Manager, PINGP, USNRC Senior Resident Inspector, PINGP, USNRC