ML12348A265

Day Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Seismic Aspects of Recommendation 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident

ML12348A265
Person / Time
Site:	Dresden
Issue date:	11/27/2012
From:	Kaegi G T Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RS-12-167
Download: ML12348A265 (4)

Text

4 Exelon Generation 10 CFR 50.54(f)RS-12-167 November 27, 2012 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, MD 20852 Dresden Nuclear Power Station, Units 2 and 3 Renewed Facility Operating License Nos. DPR-19 and DPR-25 NRC Docket Nos. 50-237 and 50-249

Subject:

Exelon Generation Company, LLC's 180-day Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Seismic Aspects of Recommendation 2.3 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 2. NRC Letter, Endorsement of Electric Power Research Institute (EPRI) Draft Report 1025286, "Seismic Walkdown Guidance," dated May 31, 2012 3. Exelon Generation Company, LLC's 120-day response to NRC Request for Information Pursuant to 10 CFR 50.53(f) Regarding Seismic Aspects of Recommendation 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident, dated July 10, 2012 On March 12, 2012, the Nuclear Regulatory Commission (NRC) issued Reference 1 to all power reactor licensees.

Enclosure 3 of Reference 1 contains specific Requested Actions, Requested Information, and Required Responses associated with Recommendation 2.3 for Seismic. On July 10, 2012, Exelon Generation Company, LLC (EGC) submitted the 120-day response requested in Enclosure 3 of Reference 1, confirming that EGC would use the NRC-endorsed seismic walkdown procedure (Reference 3).

U.S. Nuclear Regulatory Commission 180-Day Response to 50.54(f) Letter NTTF Recommendation 2.3: Seismic November 27, 2012 Page 2 For seismic Recommendation 2.3 (walkdowns), Enclosure 3 of Reference 1 states that within 180 days of the NRC's endorsement of the walkdown process (Reference 2), each addressee will submit a final response, including a list of any areas that are unable to be inspected due to inaccessibility and a schedule for when the walkdown will be completed.

This letter provides the Dresden Nuclear Power Station 180-day response to Reference 1 for Seismic Recommendation 2.3.Conditions identified during the walkdowns were documented and entered into the corrective action program. Evaluations of the identified conditions are complete.Enclosures 1 and 2 to this letter provide the requested information for Dresden Nuclear Power Station Units 2 and 3, respectively.

This letter contains new regulatory commitments, which are identified in Enclosure 3.Should you have any questions concerning the content of this letter, please contact Ron Gaston at (630) 657-3359.I declare under penalty of perjury that the foregoing is true and correct. Executed on the 27th day of November 2012.Respectfully, Glen T. Kaegi Director, Midwest Licensing and Regulatory Affairs Exelon Generation Company, LLC

Enclosures:

1. Seismic Walkdown Report In Response To The 50.54(f) Information Request Regarding Fukushima Near-Term Task Force Recommendation 2.3: Seismic for the Dresden Nuclear Power Station, Unit 2, Report Number: 12Q0108.30-R-001, Revision 1 2. Seismic Walkdown Report In Response To The 50.54(f) Information Request Regarding Fukushima Near-Term Task Force Recommendation 2.3: Seismic for the Dresden Nuclear Power Station, Unit 3, Report Number: 12Q0108.30-R-002, Revision 2 3. Summary of Regulatory Commitments U.S. Nuclear Regulatory Commission 180-Day Response to 50.54(f) Letter NTTF Recommendation 2.3: Seismic November 27, 2012 Page 3 cc: Director, Office of Nuclear Reactor Regulation (with Enclosures land 2 via CD)Regional Administrator

-NRC Region III (with Enclosures 1 and 2 via CD)NRC Senior Resident Inspector

-Dresden Nuclear Power Station (with Enclosures 1 and 2 via CD)NRC Project Manager, NRR Dresden Nuclear Power Station (with Enclosures 1 and 2 via CD)Illinois Emergency Management Agency -Division of Nuclear Safety (with Enclosures 1 and 2 via CD)

U.S. Nuclear Regulatory Commission 180-Day Response to 50.54(f) Letter NTTF Recommendation 2.3: Seismic November 27, 2012 Page 6 Enclosure 3

SUMMARY

OF REGULATORY COMMITMENTS The following table identifies commitments made in this document. (Any other actions discussed in the submittal represent intended or planned actions. They are described to the NRC for the NRC's information and are not regulatory commitments.)

COMMITTED COMMITMENT TYPE COMMITMENT DATE OR ONE-TIME ACTION PROGRAMMATIC (Yes/No) (Yes/No)1. Exelon Generation Company, LLC D2R23 Yes No (EGC) will complete the walkdown of the Fall 2013 13 Dresden Unit 2 items identified in Table E-1 of Enclosure 1, deferred due to inaccessibility.

2. EGC will complete the walkdown of the D3R22 Yes No 15 Dresden Unit 3 items identified in Fall 2012 Table E-1 of Enclosure 2, deferred due to inaccessibility.

73. EGC will complete the supplemental 12/31/24 Yes No inspections of 26 Dresden Unit 2 eiectricai cabinets identified in Table E-2 of Enclosure 1.4. EGC will complete the supplemental D3R27 Yes No inspections of 27 Dresden Unit 3 Winter 2022 electrical cabinets identified in Table E-2 of Enclosure 2.