ML15364A544

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Staff Review of High Frequency Confirmation Associated with Reevaluated Seismic Hazard Implementating Near-Term Task Force Recommendation 2.1 Seismic for Specific Licensees
ML15364A544
Person / Time
Site: Calvert Cliffs, Salem, Nine Mile Point, Harris, Oyster Creek, Hope Creek, Susquehanna, River Bend, Ginna, Waterford, Duane Arnold, Clinton
Issue date: 02/18/2016
From: Steve Wyman
Japan Lessons-Learned Division
To:
Calvert Cliffs, Duke Energy Progress, Entergy Operations, Exelon Generation Co, Nextera Energy, NextEra Energy Duane Arnold, Nine Mile Point, Public Service Enterprise Group, Ginna, Susquehanna
DiFrancesco, Nicholas NRR/JLD 415-1115
References
Download: ML15364A544 (9)


Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 To the Power Reactor Licensees on the Enclosed List February 18, 2016

SUBJECT:

STAFF REVIEW OF HIGH FREQUENCY CONFIRMATION ASSOCIATED WITH REEVALUATED SEISMIC HAZARD IN RESPONSE TO MARCH 12, 2012 50.54(f) REQUEST FOR INFORMATION The U.S. Nuclear Regulatory Commission (NRC) is issuing this letter to inform the power reactor licensees included in Enclosure 2, of the NRC staff's review of the high frequency confirmation letters and concludes that the licensees' assessment was performed consistent with the guidance. This letter also identifies specific licensees that have provided sufficient information to complete the response to the 50. 54(f) request for information and that the staff has also found that no additional regulatory actions associated with Phase 2 of R2. 1 "Seismic" are required.

BACKGROUND By letter dated March 12, 2012 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12053A340), the U.S. Nuclear Regulatory Commission (NRC) issued a request for information pursuant to Title 10 of the Code of Federal Regulations Part 50, Section 50.54(f) (hereafter referred to as the 50.54(f) letter). The request was issued as part of implementing lessons-learned from the accident at the Fukushima Dai-ichi nuclear power plant. to the 50.54(f) letter requested that licensees reevaluate seismic hazards at their sites using present-day methodologies and guidance. Enclosure 1, Item 4, of the 50.54(f) letter requested that licensees perform a comparison of the ground motion response spectrum (GMRS) and safe shutdown earthquake (SSE); and if the GMRS exceeds the SSE only at higher frequencies information related to the functionality of high frequency sensitive structures, systems and components (SSCs) is requested. Attachment 1, Step 3 of the March 12, 2012, letter further clarified that licensees with high frequency exceedance should provide a confirmation that SSCs, which may be affected by high-frequency ground motion, will maintain their functions important to safety.

By letter dated July 30, 2015 (ADAMS Accession No. ML15223A100), the Nuclear Energy Institute submitted an Electric Power Research Institute (EPRI) report entitled, High Frequency Program: Application Guidance for Functional Confirmation and Fragility Evaluation (EPRI 3002004396) for NRC review and endorsement. The NRC endorsed the guidance by letter dated September 17, 2015 (ADAMS Accession No. ML15218A569), as an acceptable method for licensees to use, in addition to the SPID guidance, when responding to NRC Requested Information Item (4) in Enclosure 1 of the 50.54(f) letter. Furthermore, the letter dated October 27, 2015 (ADAMS Accession No. ML15194A015), to licensees established that for facilities with limited exceedance in the high frequency range above plant design bases, submittals are expected by December 31, 2015.

REVIEW OF LICENSEE HIGH FREQUENCY CAPACITY CONFIRMATION By letters dated November and December 20151, to the NRC, licensees submitted for NRC review the limited exceedance high frequency confirmations. The NRC staff review confirmed that licensee-reevaluated seismic hazards meet one of two screening criteria:

1. Peak spectral accelerations s 0.2g or
2. The GMRS exceedance above the current design-basis is on the order of 10 percent or less of the area under the SSE or Individual Plant Examination of External Events High Confidence of Low Probability of Failure Spectrum (IHS) over the frequency range of exceedance.

The NRC staff confirmed that the following plants met the 3.1.1. "Low Spectral Acceleration Screening" criterion described in EPRI Report 3002004396:

Calvert Cliffs Nuclear Power Plant, Units 1 and 2 Duane Arnold Energy Center River Bend Station, Unit 1 Waterford Steam Electric Station, Unit 3 The basis for this criterion is the lack of damage observed in actual earthquakes with observed spectral accelerations less than 0.29. Additionally, the EPRI High Frequency Program has shown that shake table testing in the high frequency range of 20 to 40 Hertz (Hz), in general, yields a higher test capacity than testing in the 4 to 16 Hz range for tests of the same control component. Therefore, the NRC staff concludes that sites with a horizontal GMRS high frequency peak spectral acceleration less than 0.2g do not warrant additional evaluations to confirm the functionality of control devices in the high frequency range.

The NRC staff confirmed that the following plants met the 3.1.2 "Limited High Frequency Exceedance Screening" criterion described in EPRI Report 3002004396:

Clinton Power Station, Unit No. 1 Hope Creek Generating Station Nine Mile Point Nuclear Station, Unit 2 Oyster Creek Nuclear Generating Station R. E. Ginna Nuclear Power Plant Salem Nuclear Generating Station, Units 1 and 2 Shearon Harris Nuclear Generating Station, Unit 1 Susquehanna Steam Electric Station, Units 1 and 2 For the high frequency confirmation, this range of exceedance over limited frequency ranges, evaluated using the exceedance area criteria, does not represent a concern and thus does not warrant additional evaluations to confirm the functionality of control devices in the high frequency range.

Based on the NRC staff review of licensee letters, the staff concludes that licensee screening meets the criteria outlined in EPRI Report 3002004396, and thus is acceptable to the staff.

1 Licensee November and December 2015 submittal letters can be found in Enclosure 1.

CLOSURE OF PHASE TWO EVALUATION FOR SPECIFIC LICENSEES Based on the justification provided above, the NRC staff concludes that no further response or regulatory actions associated with the 50.54(f) letter review of Phase 2 of the Near-term Task Force (NTTF) Recommendation 2.1 "Seismic" are required for the following plants:

Clinton Power Station, Unit No. 1 Duane Arnold Energy Center Nine Mile Point Nuclear Station, Unit 2 R.E. Ginna Nuclear Power Plant River Bend Station, Unit 1 Shearon Harris Nuclear Generating Station, Unit 1 Waterford Steam Electric Station, Unit 3 For the above plants, this letter closes out the NRC efforts associated with Phase 1 and Phase 2 of NTTF Recommendation 2.1 "Seismic". If you have any questions, please contact Steve Wyman at (301) 415-3041 or via e-mail at Stephen.Wyman@nrc.gov.

Enclosures:

1. Correspondence Associated with Seismic Hazard Reviews and High Frequency Confirmation 2. List of Addressees cc w/encls: Distribution via Listserv Sincerely, Stephen Wyman, Project Manager Hazards Management Branch Japan Lessons-Learned Division Office of Nuclear Reactor Regulation

Plant Name Calvert Cliffs Nuclear Power Plant, Units 1 and 2 Clinton Power Station, Unit No. 1 Duane Arnold Energy Center Hope Creek Generating Station Nine Mile Point Nuclear Station, Unit 2

Oyster Creek Nuclear Generating Station R.E. Ginna Nuclear Power Plant River Bend Station, Unit 1 Correspondence Associated with Seismic Hazard Reviews and High Frequency Confirmation Seismic Hazard and Seismic Hazard Staff Screening Report and NRC Screening and Assessment Letter Supplements Determination Letters (ADAMS Accession (ADAMS Accession Nos.)

(ADAMS Accession Nos.)

Nos.)

March 31, 2014 May 9, 2014 July 8, 2015 (ML14099A196)

(ML14111A147)

(ML15153A073)

March 31, 2014 May 9, 2014 October 19, 2015 (ML14091A011), and (ML14111A147), and (ML15281A226)

August 21, 2014 October 3, 2014 (ML14234A124)

(ML14258A043)

March 28, 2014 May 9, 2014 December 15, 2015 (ML14092A331) and (ML14111A147) and (ML15324A176)

August 21, 2014 (ML14198A070)

March 28, 2014 May 9, 2014 Remains under (ML14087A436)

(ML14111A147) review March 31, 2014 May 9, 2014 June 16, 2015 (ML14099A196)

(ML14111A147)

(ML15153A660)

March 31, 2014 May 9, 2014 February 17, 2016 (ML14090A241) and (ML14111A147) and (ML15350A353)

August 21, 2014 November 28, 2014

{ML14234A124)

(ML14307A638)

March 31, 2014 May 9, 2014 June 11, 2015 (ML14099A196)

(ML14111A147)

(ML15153A026)

March 26, 2014 May 9, 2014 November 3, 2015 (ML14091A426)

(ML14111A147)

(ML15295A186)

High Frequency Confirmation Letter (ADAMS Accession Nos.)

December 4, 2015 (ML15338A002)

November 30, 2015 (ML15335A389)

December 15, 2015 (ML15352A114)

December 23, 2015 (ML15358A138)

December 4, 2015 (ML15338A004)

December 4, 2015 (ML15338A005)

December 4, 2015 (ML15338A003)

December 8, 2015 (ML16005A088)

Seismic Hazard and Seismic Hazard Staff Screening Report and NRC Screening and Assessment Letter High Frequency Supplements Determination Letters (ADAMS Accession Confirmation Letter Plant Name (ADAMS Accession Nos.)

(ADAMS Accession Nos.)

Nos.)

(ADAMS Accession Nos.)

Salem Nuclear March 28, 2014 May 9, 2014 Remains under December 23, 2015 Generating Station, (ML14090A043)

(Ml 14111A147) review (Ml 15358A 139)

Units 1 and 2 October 3, 2014 (Ml 14258A043)

October 27, 2015 (ML15194A015)

Shearon Harris March 27, 2014 May 9, 2014 December 18, 2015 December 17, 2015 Nuclear Power Plant, (ML14090A441)

(ML14111A147)

(ML15349A149)

(Ml 15351A170)

Unit 1 Susquehanna Steam March 26, 2014 May 9, 2014 January 20, 2016 December 23, 2015 Electric Station, Units (Ml 14085A398)

(Ml 14111A 147)

(Ml 15356A247)

(Ml 15362A529) 1and2 Waterford Steam March 27, 2014 May 9, 2014 December 15, 2015 December 16, 2015 Electric Station, Unit 3 (ML14086A427)

(Ml 14111A147)

(ML15335A050)

(Ml 15350A389)

List of Addressees Calvert Cliffs Nuclear Power Plant Calvert Cliffs Nuclear Power Plant, LLC Docket Nos. 50-317 and 50-318 License Nos. DPR-53 and DPR-69 Mr. Bryan C. Hanson President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Clinton Power Station Exelon Generation Company Docket No. 50-461 License No. NPF-62 Mr. Bryan C. Hanson Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Duane Arnold Energy Center NextEra Duane Arnold, LLC Docket No. 50-331 License No. DPR-49 Mr. Thomas A. Vehec Site Vice President Next Era Energy Duane Arnold Energy Center 3277 DAEC Road Palo, IA 52324-9785 Hope Creek Generating Station PSEG Nuclear LLC Docket No. 50-354 License No. NPF-57 Mr. Robert Braun President and Chief Nuclear Officer PSEG Nuclear LLC - N09 P. 0. Box 236, Hancocks Bridge, NJ 08038 Nine Mile Point Nuclear Station Nine Mile Point Nuclear Station, LLC Docket No. 50-410 License No. NPF-69 Mr. Bryan C. Hanson President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Oyster Creek Nuclear Generating Station Exelon Generation Company LLC Docket No. 50-219 License No. DPR-16 Mr. Bryan C. Hanson President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 R. E. Ginna Nuclear Power Plant R. E. Ginna Nuclear Power Plant, LLC Docket No. 50-244 License No. DPR-18 Mr. Bryan C. Hanson President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555

River Bend Station Entergy Operations, Inc.

Docket No. 50-458 License No. NFP-47 Vice President, Operations Entergy Operations, Inc.

River Bend Station 5485 U.S. Highway 61 N St. Francisville, LA 70775 Salem Nuclear Generating Station PSEG Nuclear LLC Docket Nos. 50-272 and 50-311 License No. DPR-70 and DPR-75 Mr. Robert Braun President and CNO PSEG Nuclear LLC-N09 P. 0. Box 236 Hancocks Bridge, NJ 08038 Shearon Harris Nuclear Power Plant Duke Energy Progress, Inc.

Docket No. 50-400 License No. NPF-63 Mr. Benjamin C. Waldrep Site Vice President Shearon Harris Nuclear Power Plant 5413 Shearon Harris Rd.

M/C HNP01 New Hill, NC 27562-0165 Susquehanna Steam Electric Station Susquehanna Nuclear, LLC Docket Nos. 50-387 and 50-388 License No. NPF-14 and NPF-22 Mr. Jon A. Franke Site Vice President Susquehanna Nuclear, LLC 769 Salem Boulevard NUCSB3 Berwick, PA 18603-0467 Waterford Steam Electric Station Entergy Operations, Inc.

Docket No. 50-382 License No. NPF-38 Site Vice President Entergy Operations, Inc.

Waterford Steam Electric Station, Unit 3 17265 River Road Killona, LA 70057-075 CLOSURE OF PHASE TWO EVALUATION FOR SPECIFIC LICENSEES Based on the justification provided above, the NRC staff concludes that no further response or regulatory actions associated with the 50.54(f) letter review of Phase 2 of the Near-term Task Force (NTTF) Recommendation 2.1 "Seismic" are required for the following plants:

Clinton Power Station, Unit No. 1 Duane Arnold Energy Center Nine Mile Point Nuclear Station, Unit 2 R.E. Ginna Nuclear Power Plant River Bend Station, Unit 1 Shearon Harris Nuclear Generating Station, Unit 1 Waterford Steam Electric Station, Unit 3 For the above plants, this letter closes out the NRC efforts associated with Phase 1 and Phase 2 of NTTF Recommendation 2.1 "Seismic". If you have any questions, please contact Steve Wyman at (301) 415-3041 or via e-mail at Stephen.Wyman@nrc.gov.

Enclosures:

1. Correspondence Associated with Seismic Hazard Reviews and High Frequency Confirmation 2. List of Addressees cc w/encls: Distribution via Listserv DISTRIBUTION:

See next page ADAMS Accession Number: ML15364A544 OFFICE NRR/JLD/JHMB/PM NAME SWyman DATE 1/2/2016 OFFICE OGC (NLO)

NAME BHarris DATE 1/28/16 Sincerely, IRA Nicholas DiFrancesco Acting for/

Stephen Wyman, Project Manager Hazards Management Branch Japan Lessons-Learned Division Office of Nuclear Reactor Regulation "via e-mail NRR/JLD/LA NRO/DSEA/RGS2/BC Slent MMcCoppin 1/15/16 2/3/16 NRR/JLD/JHMB/BC NRR/JLD/JHMB/PM MShams SWyman (NDiFrancesco for) 2/18/16 2/18/16 OFFICIAL RECORD COPY

Letter to the Power Reactor Licensees on the Enclosed List from S.Wyman dated February 18, 2016

SUBJECT:

STAFF REVIEW OF HIGH FREQUENCY CONFIRMATION ASSOCIATED WITH REEVALUATED SEISMIC HAZARD IMPLEMENTING NEAR-TERM TASK FORCE RECOMMENDATION 2.1 AND PHASE 2 CLOSURE OF RECOMMENDATION 2.1, "SEISMIC" FOR SPECIFIC LICENSEES DISTRIBUTION:

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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 To the Power Reactor Licensees on the Enclosed List February 18, 2016

SUBJECT:

STAFF REVIEW OF HIGH FREQUENCY CONFIRMATION ASSOCIATED WITH REEVALUATED SEISMIC HAZARD IN RESPONSE TO MARCH 12, 2012 50.54(f) REQUEST FOR INFORMATION The U.S. Nuclear Regulatory Commission (NRC) is issuing this letter to inform the power reactor licensees included in Enclosure 2, of the NRC staff's review of the high frequency confirmation letters and concludes that the licensees' assessment was performed consistent with the guidance. This letter also identifies specific licensees that have provided sufficient information to complete the response to the 50. 54(f) request for information and that the staff has also found that no additional regulatory actions associated with Phase 2 of R2. 1 "Seismic" are required.

BACKGROUND By letter dated March 12, 2012 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12053A340), the U.S. Nuclear Regulatory Commission (NRC) issued a request for information pursuant to Title 10 of the Code of Federal Regulations Part 50, Section 50.54(f) (hereafter referred to as the 50.54(f) letter). The request was issued as part of implementing lessons-learned from the accident at the Fukushima Dai-ichi nuclear power plant. to the 50.54(f) letter requested that licensees reevaluate seismic hazards at their sites using present-day methodologies and guidance. Enclosure 1, Item 4, of the 50.54(f) letter requested that licensees perform a comparison of the ground motion response spectrum (GMRS) and safe shutdown earthquake (SSE); and if the GMRS exceeds the SSE only at higher frequencies information related to the functionality of high frequency sensitive structures, systems and components (SSCs) is requested. Attachment 1, Step 3 of the March 12, 2012, letter further clarified that licensees with high frequency exceedance should provide a confirmation that SSCs, which may be affected by high-frequency ground motion, will maintain their functions important to safety.

By letter dated July 30, 2015 (ADAMS Accession No. ML15223A100), the Nuclear Energy Institute submitted an Electric Power Research Institute (EPRI) report entitled, High Frequency Program: Application Guidance for Functional Confirmation and Fragility Evaluation (EPRI 3002004396) for NRC review and endorsement. The NRC endorsed the guidance by letter dated September 17, 2015 (ADAMS Accession No. ML15218A569), as an acceptable method for licensees to use, in addition to the SPID guidance, when responding to NRC Requested Information Item (4) in Enclosure 1 of the 50.54(f) letter. Furthermore, the letter dated October 27, 2015 (ADAMS Accession No. ML15194A015), to licensees established that for facilities with limited exceedance in the high frequency range above plant design bases, submittals are expected by December 31, 2015.

REVIEW OF LICENSEE HIGH FREQUENCY CAPACITY CONFIRMATION By letters dated November and December 20151, to the NRC, licensees submitted for NRC review the limited exceedance high frequency confirmations. The NRC staff review confirmed that licensee-reevaluated seismic hazards meet one of two screening criteria:

1. Peak spectral accelerations s 0.2g or
2. The GMRS exceedance above the current design-basis is on the order of 10 percent or less of the area under the SSE or Individual Plant Examination of External Events High Confidence of Low Probability of Failure Spectrum (IHS) over the frequency range of exceedance.

The NRC staff confirmed that the following plants met the 3.1.1. "Low Spectral Acceleration Screening" criterion described in EPRI Report 3002004396:

Calvert Cliffs Nuclear Power Plant, Units 1 and 2 Duane Arnold Energy Center River Bend Station, Unit 1 Waterford Steam Electric Station, Unit 3 The basis for this criterion is the lack of damage observed in actual earthquakes with observed spectral accelerations less than 0.29. Additionally, the EPRI High Frequency Program has shown that shake table testing in the high frequency range of 20 to 40 Hertz (Hz), in general, yields a higher test capacity than testing in the 4 to 16 Hz range for tests of the same control component. Therefore, the NRC staff concludes that sites with a horizontal GMRS high frequency peak spectral acceleration less than 0.2g do not warrant additional evaluations to confirm the functionality of control devices in the high frequency range.

The NRC staff confirmed that the following plants met the 3.1.2 "Limited High Frequency Exceedance Screening" criterion described in EPRI Report 3002004396:

Clinton Power Station, Unit No. 1 Hope Creek Generating Station Nine Mile Point Nuclear Station, Unit 2 Oyster Creek Nuclear Generating Station R. E. Ginna Nuclear Power Plant Salem Nuclear Generating Station, Units 1 and 2 Shearon Harris Nuclear Generating Station, Unit 1 Susquehanna Steam Electric Station, Units 1 and 2 For the high frequency confirmation, this range of exceedance over limited frequency ranges, evaluated using the exceedance area criteria, does not represent a concern and thus does not warrant additional evaluations to confirm the functionality of control devices in the high frequency range.

Based on the NRC staff review of licensee letters, the staff concludes that licensee screening meets the criteria outlined in EPRI Report 3002004396, and thus is acceptable to the staff.

1 Licensee November and December 2015 submittal letters can be found in Enclosure 1.

CLOSURE OF PHASE TWO EVALUATION FOR SPECIFIC LICENSEES Based on the justification provided above, the NRC staff concludes that no further response or regulatory actions associated with the 50.54(f) letter review of Phase 2 of the Near-term Task Force (NTTF) Recommendation 2.1 "Seismic" are required for the following plants:

Clinton Power Station, Unit No. 1 Duane Arnold Energy Center Nine Mile Point Nuclear Station, Unit 2 R.E. Ginna Nuclear Power Plant River Bend Station, Unit 1 Shearon Harris Nuclear Generating Station, Unit 1 Waterford Steam Electric Station, Unit 3 For the above plants, this letter closes out the NRC efforts associated with Phase 1 and Phase 2 of NTTF Recommendation 2.1 "Seismic". If you have any questions, please contact Steve Wyman at (301) 415-3041 or via e-mail at Stephen.Wyman@nrc.gov.

Enclosures:

1. Correspondence Associated with Seismic Hazard Reviews and High Frequency Confirmation 2. List of Addressees cc w/encls: Distribution via Listserv Sincerely, Stephen Wyman, Project Manager Hazards Management Branch Japan Lessons-Learned Division Office of Nuclear Reactor Regulation

Plant Name Calvert Cliffs Nuclear Power Plant, Units 1 and 2 Clinton Power Station, Unit No. 1 Duane Arnold Energy Center Hope Creek Generating Station Nine Mile Point Nuclear Station, Unit 2

Oyster Creek Nuclear Generating Station R.E. Ginna Nuclear Power Plant River Bend Station, Unit 1 Correspondence Associated with Seismic Hazard Reviews and High Frequency Confirmation Seismic Hazard and Seismic Hazard Staff Screening Report and NRC Screening and Assessment Letter Supplements Determination Letters (ADAMS Accession (ADAMS Accession Nos.)

(ADAMS Accession Nos.)

Nos.)

March 31, 2014 May 9, 2014 July 8, 2015 (ML14099A196)

(ML14111A147)

(ML15153A073)

March 31, 2014 May 9, 2014 October 19, 2015 (ML14091A011), and (ML14111A147), and (ML15281A226)

August 21, 2014 October 3, 2014 (ML14234A124)

(ML14258A043)

March 28, 2014 May 9, 2014 December 15, 2015 (ML14092A331) and (ML14111A147) and (ML15324A176)

August 21, 2014 (ML14198A070)

March 28, 2014 May 9, 2014 Remains under (ML14087A436)

(ML14111A147) review March 31, 2014 May 9, 2014 June 16, 2015 (ML14099A196)

(ML14111A147)

(ML15153A660)

March 31, 2014 May 9, 2014 February 17, 2016 (ML14090A241) and (ML14111A147) and (ML15350A353)

August 21, 2014 November 28, 2014

{ML14234A124)

(ML14307A638)

March 31, 2014 May 9, 2014 June 11, 2015 (ML14099A196)

(ML14111A147)

(ML15153A026)

March 26, 2014 May 9, 2014 November 3, 2015 (ML14091A426)

(ML14111A147)

(ML15295A186)

High Frequency Confirmation Letter (ADAMS Accession Nos.)

December 4, 2015 (ML15338A002)

November 30, 2015 (ML15335A389)

December 15, 2015 (ML15352A114)

December 23, 2015 (ML15358A138)

December 4, 2015 (ML15338A004)

December 4, 2015 (ML15338A005)

December 4, 2015 (ML15338A003)

December 8, 2015 (ML16005A088)

Seismic Hazard and Seismic Hazard Staff Screening Report and NRC Screening and Assessment Letter High Frequency Supplements Determination Letters (ADAMS Accession Confirmation Letter Plant Name (ADAMS Accession Nos.)

(ADAMS Accession Nos.)

Nos.)

(ADAMS Accession Nos.)

Salem Nuclear March 28, 2014 May 9, 2014 Remains under December 23, 2015 Generating Station, (ML14090A043)

(Ml 14111A147) review (Ml 15358A 139)

Units 1 and 2 October 3, 2014 (Ml 14258A043)

October 27, 2015 (ML15194A015)

Shearon Harris March 27, 2014 May 9, 2014 December 18, 2015 December 17, 2015 Nuclear Power Plant, (ML14090A441)

(ML14111A147)

(ML15349A149)

(Ml 15351A170)

Unit 1 Susquehanna Steam March 26, 2014 May 9, 2014 January 20, 2016 December 23, 2015 Electric Station, Units (Ml 14085A398)

(Ml 14111A 147)

(Ml 15356A247)

(Ml 15362A529) 1and2 Waterford Steam March 27, 2014 May 9, 2014 December 15, 2015 December 16, 2015 Electric Station, Unit 3 (ML14086A427)

(Ml 14111A147)

(ML15335A050)

(Ml 15350A389)

List of Addressees Calvert Cliffs Nuclear Power Plant Calvert Cliffs Nuclear Power Plant, LLC Docket Nos. 50-317 and 50-318 License Nos. DPR-53 and DPR-69 Mr. Bryan C. Hanson President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Clinton Power Station Exelon Generation Company Docket No. 50-461 License No. NPF-62 Mr. Bryan C. Hanson Senior Vice President Exelon Generation Company, LLC President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555 Duane Arnold Energy Center NextEra Duane Arnold, LLC Docket No. 50-331 License No. DPR-49 Mr. Thomas A. Vehec Site Vice President Next Era Energy Duane Arnold Energy Center 3277 DAEC Road Palo, IA 52324-9785 Hope Creek Generating Station PSEG Nuclear LLC Docket No. 50-354 License No. NPF-57 Mr. Robert Braun President and Chief Nuclear Officer PSEG Nuclear LLC - N09 P. 0. Box 236, Hancocks Bridge, NJ 08038 Nine Mile Point Nuclear Station Nine Mile Point Nuclear Station, LLC Docket No. 50-410 License No. NPF-69 Mr. Bryan C. Hanson President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Oyster Creek Nuclear Generating Station Exelon Generation Company LLC Docket No. 50-219 License No. DPR-16 Mr. Bryan C. Hanson President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 R. E. Ginna Nuclear Power Plant R. E. Ginna Nuclear Power Plant, LLC Docket No. 50-244 License No. DPR-18 Mr. Bryan C. Hanson President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555

River Bend Station Entergy Operations, Inc.

Docket No. 50-458 License No. NFP-47 Vice President, Operations Entergy Operations, Inc.

River Bend Station 5485 U.S. Highway 61 N St. Francisville, LA 70775 Salem Nuclear Generating Station PSEG Nuclear LLC Docket Nos. 50-272 and 50-311 License No. DPR-70 and DPR-75 Mr. Robert Braun President and CNO PSEG Nuclear LLC-N09 P. 0. Box 236 Hancocks Bridge, NJ 08038 Shearon Harris Nuclear Power Plant Duke Energy Progress, Inc.

Docket No. 50-400 License No. NPF-63 Mr. Benjamin C. Waldrep Site Vice President Shearon Harris Nuclear Power Plant 5413 Shearon Harris Rd.

M/C HNP01 New Hill, NC 27562-0165 Susquehanna Steam Electric Station Susquehanna Nuclear, LLC Docket Nos. 50-387 and 50-388 License No. NPF-14 and NPF-22 Mr. Jon A. Franke Site Vice President Susquehanna Nuclear, LLC 769 Salem Boulevard NUCSB3 Berwick, PA 18603-0467 Waterford Steam Electric Station Entergy Operations, Inc.

Docket No. 50-382 License No. NPF-38 Site Vice President Entergy Operations, Inc.

Waterford Steam Electric Station, Unit 3 17265 River Road Killona, LA 70057-075 CLOSURE OF PHASE TWO EVALUATION FOR SPECIFIC LICENSEES Based on the justification provided above, the NRC staff concludes that no further response or regulatory actions associated with the 50.54(f) letter review of Phase 2 of the Near-term Task Force (NTTF) Recommendation 2.1 "Seismic" are required for the following plants:

Clinton Power Station, Unit No. 1 Duane Arnold Energy Center Nine Mile Point Nuclear Station, Unit 2 R.E. Ginna Nuclear Power Plant River Bend Station, Unit 1 Shearon Harris Nuclear Generating Station, Unit 1 Waterford Steam Electric Station, Unit 3 For the above plants, this letter closes out the NRC efforts associated with Phase 1 and Phase 2 of NTTF Recommendation 2.1 "Seismic". If you have any questions, please contact Steve Wyman at (301) 415-3041 or via e-mail at Stephen.Wyman@nrc.gov.

Enclosures:

1. Correspondence Associated with Seismic Hazard Reviews and High Frequency Confirmation 2. List of Addressees cc w/encls: Distribution via Listserv DISTRIBUTION:

See next page ADAMS Accession Number: ML15364A544 OFFICE NRR/JLD/JHMB/PM NAME SWyman DATE 1/2/2016 OFFICE OGC (NLO)

NAME BHarris DATE 1/28/16 Sincerely, IRA Nicholas DiFrancesco Acting for/

Stephen Wyman, Project Manager Hazards Management Branch Japan Lessons-Learned Division Office of Nuclear Reactor Regulation "via e-mail NRR/JLD/LA NRO/DSEA/RGS2/BC Slent MMcCoppin 1/15/16 2/3/16 NRR/JLD/JHMB/BC NRR/JLD/JHMB/PM MShams SWyman (NDiFrancesco for) 2/18/16 2/18/16 OFFICIAL RECORD COPY

Letter to the Power Reactor Licensees on the Enclosed List from S.Wyman dated February 18, 2016

SUBJECT:

STAFF REVIEW OF HIGH FREQUENCY CONFIRMATION ASSOCIATED WITH REEVALUATED SEISMIC HAZARD IMPLEMENTING NEAR-TERM TASK FORCE RECOMMENDATION 2.1 AND PHASE 2 CLOSURE OF RECOMMENDATION 2.1, "SEISMIC" FOR SPECIFIC LICENSEES DISTRIBUTION:

PUBLIC RidsNroOd RidsOeMailCenter RidsOGCMailCenter RidsNrrDorl RidsNrrDorlLPL 1-1 RidsNrrDorlLPL 1-2 RidsNrrDorlLPL3-1 RidsNrrDorlLPL4-2 RidsNrrPMCalvertCliffs RidsNrrPMClinton RidsNrrPMDuaneArnold RidsNrrPMHopeCreek RidsNrrPMNineMile RidsNrrPMOysterCreek RidsNrrPMREGinna RidsNrrPMRiverBend RidsNrrPMSalem RidsNrrPMShearonHarris RidsNrrPMSusquehanna RidsNrrPMWaterford Tiate, NRR DBroaddus, NRR DWrona, NRR MKhanna, NRR RidsRgn1 Mai!Center RidsRgn3MailCenter RidsRgn4MailCenter MMcCoppin, NRO NDiFrancesco, NRR MShams, NRR