NG-12-0234, NextEra Energy Duane Arnold, LLC - 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

NextEra Energy Duane Arnold, LLC - 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

ML12165A466
Person / Time
Site:	Duane Arnold
Issue date:	06/11/2012
From:	Wells P NextEra Energy Duane Arnold
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NG-12-0234
Download: ML12165A466 (2)

Text

NExTera ENER G7 June 11, 2012 ARNOLD NG-12-0234 10 CFR 50.54(f)

U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Duane Arnold Energy Center Docket No. 50-331 Renewed Op. License No. DPR-49 NextEra Energy Duane Arnold, LLC'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

Reference:

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 On March 12, 2012, the Nuclear Regulatory Commission (NRC) issued the referenced letter to all power reactor licensees and holders of construction permits in active or deferred status. Enclosure 1 of the referenced letter contains specific Requested Actions, Requested Information, and Required Responses associated with Recommendation 2.1, Seismic Evaluations. The referenced letter requires that, if an addressee cannot meet the requested response date, it must provide a response to the NRC within 90 days of the date of the information request describing the licensee's proposed alternative course of action, the basis for the acceptability of the proposed alternative course of action, and the estimated completion dates.

NextEra Energy Duane Arnold, LLC (hereafter, NextEra Energy Duane Arnold) has determined that it can meet the requested response date 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/ground motion response spectra (GMRS) will be calculated and the development of site amplification factors for sites with limited soil/rock profile data.

NextEra Energy Duane Arnold, LLC, 3277 DAEC Road, Palo, IA 52324

Document Control Desk June 11,2012 Page 2 of 2 Within 60 days of the NRC's endorsement of the Screening, Prioritization and Implementation Details guidance, NextEra Energy Duane Arnold will submit: (1) its intention to follow the endorsed guidance, or (2) an alternative approach. At that time, NextEra Energy Duane Arnold will assess whether it can meet the submittal deadline for the Seismic Hazard Evaluation and take the appropriate regulatory action.

This letter makes no new commitments or changes to any existing commitments.

If you have any questions or require additional information, please contact Ken Putnam at 319-851-7238.

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

Exec P2012 Peter Wells Vice President, Duane Arnold Energy Center NextEra Energy Duane Arnold, LLC cc: NRC Regional Administrator NRC Resident Inspector NRC Project Manager