ONS-2014-147, Response to the Nrc'S Request for Additional Information Dated October 23, 2014, Related to Southeastern Catalog Changes and Seismic Re-Evaluations

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Response to the Nrc'S Request for Additional Information Dated October 23, 2014, Related to Southeastern Catalog Changes and Seismic Re-Evaluations
ML14325A584
Person / Time
Site: Oconee  Duke energy icon.png
Issue date: 11/14/2014
From: Batson S
Duke Energy Carolinas
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
ONS-2014-147
Download: ML14325A584 (20)
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Text

Scott L. Batson DUKE Vice President E ERGY. Oconee Nuclear Station ENERGYDuke Ene ONO1VP I 7800 RochesterHwy ONS-2014-147 Seneca, SC 29672 o: 864.873.3274

f. 864.873. 4208 Scott.Batson@duke-energy.com November 14, 2014 ATTN: Document Control Desk 10 CFR 50.54(f)

U.S. Nuclear Regulatory Commission Washington, DC 20555 Duke Energy Carolinas, LLC (Duke Energy)

Oconee Nuclear Station, Units 1, 2 and 3 Docket Numbers 50-269, 50-270, 50-287 Renewed License Numbers DPR-38, DPR-47, and DPR-55

Subject:

Response to the NRC's Request for Additional Information dated October 23, 2014, Related to Southeastern Catalog Changes and Seismic Re-Evaluations

References:

1. NRC Letter, Request for Information Pursuantto Title 10 of the Code of FederalRegulations 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-ichiAccident, dated March 12, 2012, (ADAMS Accession No. ML12053A340)
2. EPRI Report 1025287, Seismic Evaluation Guidance: Screening, Prioritizationand Implementation Details (SPID) for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic, dated February 2013 (ADAMS Accession Number ML12333A170)
3. NRC Letter, Endorsement of EPRI Final Draft Report 1025287, "Seismic Evaluation Guidance," dated February 15, 2013, ADAMS Accession No. ML12319A074
4. NEI letter, ProposedPath Forwardfor NTTF Recommendation 2.1: Seismic Reevaluations, dated April 9, 2013 (ADAMS Accession Number ML13101A379)
5. NRC letter, Electric Power Research Institute FinalDraft Report XXXXXX, "Seismic Evaluation Guidance:Augmented Approach for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic," as an Acceptable Alternative to the March 12, 2012, Information Request for Seismic Reevaluations, dated May 7, 2013 (ADAMS Accession Number ML13106A331)
6. Duke Energy letter to NRC, Seismic Hazard and Screening Report (CEUS Sites), Response to NRC 10 CFR 50.54(f) Request for Information Pursuantto Title 10 of the Code of Federal Regulations 50.54(f) regardingRecommendations 2.1, 2.3 and 9.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident,"(for Oconee) dated March 31, 2014 (ADAMS Accession Number ML14092A024)
7. EPRI Letter: Review of EPRI 1021097 Earthquake Catalog for RIS Earthquakesin the Southeastern U. S. and Earthquakesin South CarolinaNear the Time of the 1886 Charleston EarthquakeSequence, Dated August 28, 2014, (ADAMS Accession Number ML14260A200)
8. NRC letter, Request for Additional Information Regarding the use of the Revised CEUS Seismic Catalogue,dated October 23, 2014 (ADAMS Accession No. ML14268A516) 4ArD

ONS-2014-147 November 14, 2014 Page 2 Ladies and Gentlemen, Duke Energy submitted the Seismic Hazard and Screening Report for Oconee Nuclear Station (ONS) on March 31, 2014 (Reference 6) pursuant to the NRC's 10 CFR 50.54(0 request (Reference 1). The report was based on industry guidance and an industry approach (References 2 and 4) which had been reviewed and accepted by the NRC (References 3 and 5). The report required necessary changes to be made to the Central and Eastern United States Seismic Source Characterization for Nuclear Facilities (CEUS-SSC) catalog, and the NRC was provided a detailed description of the changes by EPRI (Reference 7).

By letter dated October 23, 2014 (Reference 8), the NRC submitted a Request for Additional Information (RAI) related to the CEUS-SSC changes, which they characterized as a regional update. Enclosure 1 to this letter provides Duke Energy's response to the NRC's RAI for Oconee Nuclear Station Units 1, 2, and 3. The response provides the information which is currently available and establishes a proposed date of April 30, 2015 for submitting the results of a formal study of the CEUS-SSC Catalog regional update.

This letter does not create or revise a Regulatory Commitment.

Should you have any questions concerning this letter, or require additional information, please contact David Haile at (864) 873-4742.

I declare under penalty of perjury that the foregoing is true and correct. Executed on November 14, 2014.

Sincerely, Scott L. Batson Vice President Oconee Nuclear Station Enclosure Oconee Nuclear Station Units 1, 2, and 3, Duke Energy Response to RAI Regarding Southeastern Catalog Changes for Seismic Re-Evaluations

ONS-2014-147 November 14, 2014 cc:

Mr. Victor McCree, Regional Administrator U.S. Nuclear Regulatory Commission - Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, Georgia 30303-1257 Mr. William Dean, Director, Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 Mr. Nicholas DiFrancesco, Project Manager (Seismic Walkdowns and Reevaluations)

(by electronic mail only)

U.S. Nuclear Regulatory Commission 11555 Rockville Pike Mail Stop O-13C5 Rockville, MD 20852 Mr. James R. Hall, Project Manager (ONS)

(by electronic mail only)

U.S. Nuclear Regulatory Commission 11555 Rockville Pike Mail Stop O-8B1 Rockville, MD 20852 Mr. Eddy Crowe NRC Senior Resident Inspector Oconee Nuclear Station

Enclosure Oconee Nuclear Station Units 1, 2, and 3 Duke Energy Response to RAI Regarding Southeastern Catalog Changes for Seismic Re-Evaluations

Enclosure - ONS Seismic Catalog RAI Response ONS-2014-147 November 14, 2014 Request for Additional Information Consistent with the request for information issued pursuant to Title 10 of the Code of Federal regulations, Part50, Section 50.54(f and the SPID guidance, please provide a revised March 2014 seismic hazard reevaluation submittal reflecting the staff endorsed CEUS-SSC (Centraland Eastern United States Seismic Source Characterizationfor NuclearFacilities)Catalog Version 7.0.

Alternatively, to ensure that the regional catalog update made for the Recommendation 2.1 seismic hazard reevaluations of H. B. Robinson, Oconee, and VC Summer plant sites represents the center, body, and range of the technically defensible interpretations, please provide a SSHAC Level 2 study. In addition to providing a detailed description of the catalog update, please describe the scope of the update and whether you also considered the impact of earthquakes in the region since the time period covered by the CEUS-SSC Catalog.

Please include in the response, in table form, control point seismic hazard curves developed using both the currently-endorsed CEUS-SSC catalog as well as the proposed updated regional catalog used for the Recommendation 2.1 seismic hazard reevaluations of H.B. Robinson, Oconee, and VC Summer plant sites.

Oconee Nuclear Station Response Duke Energy will exercise the proposed alternate response provided in the RAI for Oconee. Duke Energy will credit a SSHAC Level 2' study of the updated Regional CEUS-SSC Catalog and expects to submit the results to the NRC by April 30, 2015.

The SSHAC study will be performed by EPRI and will assess if the CEUS-SSC Catalog regional update, used for the Recommendation 2.1, Seismic Hazard Reevaluation, represents the center, body, and range of technically defensible interpretations.

The RAI above includes the following petition:

In addition to providing a detailed descriptionof the catalog update, please describe the scope of the update and whether you also considered the impact of earthquakes in the region since the time period covered by the CEUS-SSC Catalog.

The decision to perform a catalog update was based on the NRC statement contained in the February 15, 2013 letter (ADAMS Accession No. ML12319A074), that endorsed the SPID guidance. In that letter the NRC stated, in part, the following:

If... new information were to emerge during the reevaluationperiod that could require an update of the CEUS-SSC model, the staff expects licensees to evaluate the significance of the new information to determine if the CEUS-SSC model needs to be updated in order to appropriatelyrespond to the 50.54(o request.

SSHAC Level 2 relates to "Recommendations for Probabilistic Seismic Hazard Analysis: Guidance on Uncertainty and Use of Experts" through the U.S. Nuclear Regulatory Commission as NUREG/CR-6372 Encl. Page 1 of 16

Enclosure - ONS Seismic Catalog RAI Response ONS-2014-147 November 14, 2014 A detailed description of the CEUS-SSC Catalog regional update was submitted to the NRC by EPRI in a letter dated August 28, 2014 (ADAMS Accession No. ML14260A200). The scope can be described as follows:

The review of the CEUS SSC catalog published in NUREG-2115 focused on to two issues:

1) Identification of additional reservoir induced seismicity (RIS) earthquakes in the southeastern US, and 2) Locations of earthquakes in South Carolina near the time of the 1886 Charleston, SC earthquake sequence. Several additional RIS events were identified in the catalog and a number of South Carolina earthquakes were re-characterized as Charleston earthquake aftershocks.

Further processing of the updated earthquake catalog was performed using the same procedures as performed in EPRI 1021097 including Magnitude evaluations, de-clustering, and completeness calculations.

The update did not consider the impact of earthquakes after the time period covered by Version 7.0 of the CEUS-SSC Catalog; however, those earthquakes will be considered as part of our Recommendation 2.1 PRA efforts. provides, in table form, the control point seismic hazard curves for Oconee Nuclear Station, Units 1, 2 and 3 in relation to Version 7.0 of the CEUS-SSC Catalog. provides, in table form, the control point seismic hazard curves for Oconee Nuclear Station, Units 1, 2 and 3 in relation to the CEUS-SSC Catalog regional update used for the Recommendation 2.1 Seismic Hazard Reevaluation.

Encl. Page 2 of 16

ATTACHMENT I Control Point Seismic Hazard Curves In Table Format (VERSION 7 OF CEUS-SSC CATALOG)

Table A-la. Mean and Fractile Seismic Hazard Curves for PGA at Oconee AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 7.13E-02 3.84E-02 5.75E-02 7.13E-02 8.72E-02 9.65E-02 0.001 5.21E-02 2.92E-02 4.13E-02 5.12E-02 6.45E-02 7.45E-02 0.005 2.05E-02 1.02E-02 1.44E-02 2.01E-02 2.53E-02 3.52E-02 0.01 1.15E-02 5.05E-03 6.93E-03 1.08E-02 1.46E-02 2.35E-02 0.015 7.46E-03 2.96E-03 4.01E-03 6.64E-03 9.93E-03 1.79E-02 0.03 3.15E-03 9.93E-04 1.38E-03 2.35E-03 4.37E-03 9.93E-03 0.05 1.57E-03 4.13E-04 6.OOE-04 1.05E-03 2.22E-03 5.66E-03 0.075 8.87E-04 2.1OE-04 3.14E-04 5.83E-04 1.27E-03 3.33E-03 0.1 5.87E-04 1.34E-04 2.04E-04 3.84E-04 8.35E-04 2.16E-03 0.15 3.22E-04 7.23E-05 1.13E-04 2.19E-04 4.63E-04 1.13E-03 0.3 1.07E-04 2.25E-05 3.73E-05 7.77E-05 1.62E-04 3.28E-04 0.5 4.32E-05 8.OOE-06 1.40E-05 3.14E-05 6.73E-05 1.25E-04 0.75 1.92E-05 2.92E-06 5.50E-06 1.36E-05 3.09E-05 5.66E-05

1. 1.02E-05 1.29E-06 2.60E-06 6.93E-06 1.64E-05 3.09E-05 1.5 3.76E-06 3.33E-07 7.45E-07 2.35E-06 6.17E-06 1.21E-05
3. 4.96E-07 1.84E-08 5.20E-08 2.46E-07 7.89E-07 1.95E-06
5. 8.1OE-08 1.38E-09 4.37E-09 2.96E-08 1.16E-07 3.73E-07 7.5 1.53E-08 2.29E-10 5.35E-10 4.19E-09 1.98E-08 8.OOE-08
10. 4.14E-09 1.49E-10 1.92E-10 9.51E-10 4.98E-09 2.32E-08 Encl. Page 3 of 16

ATTACHMENT I Control Point Seismic Hazard Curves In Table Format (VERSION 7 OF CEUS-SSC CATALOG)

Table A-lb. Mean and Fractile Seismic Hazard Curves for 25 Hz at Oconee AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 8.18E-02 4.83E-02 7.03E-02 8.23E-02 9.51E-02 9.93E-02 0.001 6.34E-02 3.79E-02 5.27E-02 6.26E-02 7.55E-02 8.85E-02 0.005 2.94E-02 1.72E-02 2.22E-02 2.88E-02 3.52E-02 4.63E-02 0.01 1.96E-02 1.02E-02 1.38E-02 1.90E-02 2.42E-02 3.33E-02 0.015 1.47E-02 7.13E-03 9.79E-03 1.40E-02 1.87E-02 2.64E-02 0.03 7.86E-03 3.37E-03 4.63E-03 7.13E-03 1.02E-02 1.67E-02 0.05 4.43E-03 1.72E-03 2.35E-03 3.79E-03 5.91E-03 1.08E-02 0.075 2.65E-03 9.37E-04 1.29E-03 2.16E-03 3.63E-03 7.13E-03 0.1 1.79E-03 5.83E-04 8.35E-04 1.42E-03 2.49E-03 5.05E-03 0.15 1.01E-03 3.01E-04 4.43E-04 7.89E-04 1.44E-03 2.88E-03 0.3 3.67E-04 1.02E-04 1.57E-04 2.92E-04 5.35E-04 9.65E-04 0.5 1.67E-04 4.56E-05 7.23E-05 1.36E-04 2.53E-04 4.07E-04 0.75 8.61E-05 2.25E-05 3.68E-05 7.13E-05 1.32E-04 2.04E-04

1. 5.21E-05 1.29E-05 2.16E-05 4.31E-05 8.23E-05 1.23E-04 1.5 2.41E-05 5.27E-06 9.24E-06 1.92E-05 3.90E-05 5.91E-05
3. 5.16E-06 7.77E-07 1.57E-06 3.84E-06 8.60E-06 1.40E-05
5. 1.32E-06 1.31E-07 3.01E-07 8.85E-07 2.22E-06 4.01E-06 7.5 3.77E-07 2.49E-08 6.45E-08 2.25E-07 6.45E-07 1.31E-06
10. 1.41E-07 6.73E-09 1.87E-08 7.55E-08 2.39E-07 5.27E-07 Encl. Page 4 of 16

ATTACHMENT I Control Point Seismic Hazard Curves In Table Format (VERSION 7 OF CEUS-SSC CATALOG)

Table A-ic. Mean and Fractile Seismic Hazard Curves for 10 Hz at Oconee AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 9.16E-02 6.73E-02 8.OOE-02 9.24E-02 9.93E-02 9.93E-02 0.001 7.42E-02 5.05E-02 6.36E-02 7.34E-02 8.60E-02 9.51E-02 0.005 3.38E-02 2.13E-02 2.64E-02 3.33E-02 4.07E-02 4.83E-02 0.01 2.19E-02 1.27E-02 1.60E-02 2.16E-02 2.72E-02 3.33E-02 0.015 1.60E-02 8.60E-03 1.11E-02 1.57E-02 2.04E-02 2.57E-02 0.03 8.10E-03 3.79E-03 5.05E-03 7.66E-03 1.07E-02 1.49E-02 0.05 4.27E-03 1.79E-03 2.42E-03 3.84E-03 5.83E-03 8.98E-03 0.075 2.39E-03 8.98E-04 1.25E-03 2.04E-03 3.33E-03 5.58E-03 0.1 1.54E-03 5.35E-04 7.66E-04 1.29E-03 2.19E-03 3.79E-03 0.15 8.08E-04 2.49E-04 3.73E-04 6.64E-04 1.16E-03 2.01E-03 0.3 2.58E-04 7.03E-05 1.11E-04 2.13E-04 3.90E-04 6.26E-04 0.5 1.08E-04 2.72E-05 4.43E-05 8.85E-05 1.67E-04 2.57E-04 0.75 5.13E-05 1.20E-05 2.04E-05 4.19E-05 8.12E-05 1.23E-04

1. 2.91E-05 6.26E-06 1.1OE-05 2.32E-05 4.70E-05 7.23E-05 1.5 1.22E-05 2.19E-06 4.13E-06 9.37E-06 2.01E-05 3.19E-05
3. 2.16E-06 2.49E-07 5.35E-07 1.49E-06 3.63E-06 6.45E-06
5. 4.68E-07 3.37E-08 8.23E-08 2.84E-07 8.OOE-07 1.60E-06 7.5 1.17E-07 5.42E-09 1.49E-08 6.OOE-08 1.98E-07 4.43E-07
10. 3.95E-08 I 1.36E-09 3.79E-09 1.79E-08 6.54E-08 1.60E-07 Encl. Page 5 of 16

ATTACHMENT I Control Point Seismic Hazard Curves In Table Format (VERSION 7 OF CEUS-SSC CATALOG)

Table A-id. Mean and Fractile Seismic Hazard Curves for 5 Hz at Oconee AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 9.28E-02 6.93E-02 8.OOE-02 9.24E-02 9.93E-02 9.93E-02 0.001 7.59E-02 5.05E-02 6.17E-02 7.55E-02 9.11E-02 9.93E-02 0.005 3.21E-02 1.90E-02 2.42E-02 3.19E-02 4.01E-02 4.50E-02 0.01 1.89E-02 1.04E-02 1.36E-02 1.87E-02 2.42E-02 2.80E-02 0.015 1.29E-02 6.54E-03 8.85E-03 1.27E-02 1.69E-02 2.01E-02 0.03 5.60E-03 2.53E-03 3.42E-03 5.27E-03 7.55E-03 1.02E-02 0.05 2.61E-03 1.05E-03 1.44E-03 2.35E-03 3.63E-03 5.35E-03 0.075 1.33E-03 4.77E-04 6.83E-04 1.16E-03 1.87E-03 2.92E-03 0.1 7.98E-04 2.68E-04 3.95E-04 6.83E-04 1.15E-03 1.82E-03 0.15 3.83E-04 1.18E-04 1.79E-04 3.28E-04 5.66E-04 8.85E-04 0.3 1.06E-04 2.80E-05 4.56E-05 8.98E-05 1.64E-04 2.46E-04 0.5 3.92E-05 9.11E-06 1.55E-05 3.23E-05 6.26E-05 9.37E-05 0.75 1.66E-05 3.28E-06 5.91E-06 1.31E-05 2.72E-05 4.19E-05

1. 8.63E-06 1.44E-06 2.76E-06 6.54E-06 1.42E-05 2.29E-05 1.5 3.15E-06 4.01 E-07 8.35E-07 2.22E-06 5.27E-06 9.11E-06
3. 4.25E-07 2.72E-08 6.93E-08 2.49E-07 7.34E-07 1.46E-06
5. 7.50E-08 2.60E-09 7.45E-09 3.47E-08 1.27E-07 2.92E-07 7.5 1.58E-08 3.95E-10 1.05E-09 5.75E-09 2.53E-08 6.73E-08
10. 4.75E-09 1.74E-10 3.09E-10 1.42E-09 7.13E-09 2.10E-08 Encl. Page 6 of 16

ATTACHMENT 1 Control Point Seismic Hazard Curves In Table Format (VERSION 7 OF CEUS-SSC CATALOG)

Table A-le. Mean and Fractile Seismic Hazard Curves for 2.5 Hz at Oconee AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 8.50E-02 6.09E-02 7.03E-02 8.47E-02 9.93E-02 9.93E-02 0.001 6.54E-02 4.25E-02 5.12E-02 6.36E-02 8.12E-02 8.98E-02 0.005 2.22E-02 1.25E-02 1.60E-02 2.16E-02 2.84E-02 3.37E-02 0.01 1.13E-02 5.75E-03 7.66E-03 1.1OE-02 1.49E-02 1.82E-02 0.015 6.97E-03 3.23E-03 4.37E-03 6.64E-03 9.51E-03 1.20E-02 0.03 2.46E-03 9.11E-04 1.31E-03 2.19E-03 3.52E-03 5.05E-03 0.05 9.50E-04 2.96E-04 4.50E-04 8.OOE-04 1.42E-03 2.16E-03 0.075 4.13E-04 1.16E-04 1.82E-04 3.37E-04 6.45E-04 9.79E-04 0.1 2.25E-04 5.83E-05 9.37E-05 1.79E-04 3.57E-04 5.42E-04 0.15 9.47E-05 2.16E-05 3.63E-05 7.45E-05 1.53E-04 2.35E-04 0.3 2.16E-05 3.52E-06 6.64E-06 1.57E-05 3.57E-05 6.OOE-05 0.5 6.94E-06 7.66E-07 1.67E-06 4.63E-06 1.20E-05 2.1OE-05 0.75 2.63E-06 1.92E-07 4.83E-07 1.60E-06 4.63E-06 8.60E-06

1. 1.25E-06 6.54E-08 1.82E-07 6.93E-07 2.22E-06 4.37E-06 1.5 4.05E-07 1.20E-08 3.84E-08 1.87E-07 7.13E-07 1.53E-06
3. 4.37E-08 5.05E-10 1.79E-09 1.27E-08 7.13E-08 1.92E-07
5. 6.45E-09 1.53E-10 2.29E-10 1.25E-09 9.11E-09 2.96E-08 7.5 1.18E-09 1.01E-10 1.53E-10 2.46E-10 1.44E-09 5.50E-09
10. 3.20E-10 9.11E-11 1.11E-10 1.53E-10 4.19E-10 1.51E-09 Encl. Page 7 of 16

ATTACHMENT 1 Control Point Seismic Hazard Curves In Table Format (VERSION 7 OF CEUS-SSC CATALOG)

Table A-If. Mean and Fractile Seismic Hazard Curves for 1 Hz at Oconee AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 5.77E-02 3.05E-02 4.25E-02 5.83E-02 7.23E-02 8.23E-02 0.001 3.79E-02 1.84E-02 2.68E-02 3.79E-02 4.83E-02 5.75E-02 0.005 9.85E-03 4.31E-03 6.17E-03 9.37E-03 1.34E-02 1.69E-02 0.01 4.70E-03 1.53E-03 2.42E-03 4.25E-03 6.93E-03 9.24E-03 0.015 2.74E-03 7.03E-04 1.20E-03 2.35E-03 4.3 1E-03 6.09E-03 0.03 8.18E-04 1.42E-04 2.60E-04 6.09E-04 1.32E-03 2.25E-03 0.05 2.60E-04 3.68E-05 6.83E-05 1.74E-04 4.25E-04 7.89E-04 0.075 9.39E-05 1.15E-05 2.25E-05 5.75E-05 1.62E-04 2.92E-04 0.1 4.45E-05 4.90E-06 1.01E-05 2.60E-05 7.89E-05 1.40E-04 0.15 1.59E-05 1.42E-06 3.09E-06 8.72E-06 2.76E-05 5.27E-05 0.3 3.01E-06 1.32E-07 3.63E-07 1.40E-06 5.05E-06 1.18E-05 0.5 8.85E-07 1.82E-08 6.26E-08 3.23E-07 1.46E-06 3.79E-06 0.75 3.16E-07 3.14E-09 1.29E-08 8.72E-08 4.98E-07 1.44E-06

1. 1.45E-07 8.72E-10 3.84E-09 3.14E-08 2.16E-07 6.73E-07 1.5 4.42E-08 2.16E-10 6.73E-10 6.45E-09 5.75E-08 2.07E-07
3. 4.48E-09 1.13E-10 1.53E-10 3.73E-10 4.01E-09 1.95E-08
5. 6.51E-10 9.11E-11 1.04E-10 1.53E-10 4.83E-10 2.49E-09 7.5 1.20E-10 9.11E-11 1.01E-10 1.53E-10 1.67E-10 4.56E-10
10. 3.30E-11 9.11E-11 1.01E-10 1.53E-10 1.53E-10 1.95E-10 Encl. Page 8 of 16

ATTACHMENT I Control Point Seismic Hazard Curves In Table Format (VERSION 7 OF CEUS-SSC CATALOG)

Table A-lg. Mean and Fractile Seismic Hazard Curves for 0.5 Hz at Oconee AMWS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 3.11E-02 1.67E-02 2.35E-02 3.01E-02 3.90E-02 4.63E-02 0.001 1.88E-02 9.65E-03 1.34E-02 1.79E-02 2.42E-02 3.09E-02 0.005 4.90E-03 1.44E-03 2.39E-03 4.50E-03 7.45E-03 9.79E-03 0.01 2.28E-03 3.73E-04 7.45E-04 1.84E-03 3.84E-03 5.58E-03 0.015 1.28E-03 1.44E-04 3.14E-04 8.98E-04 2.25E-03 3.63E-03 0.03 3.49E-04 2.29E-05 5.20E-05 1.84E-04 6.09E-04 1.25E-03 0.05 1.04E-04 5.05E-06 1.16E-05 4.43E-05 1.74E-04 4.07E-04 0.075 3.49E-05 1.40E-06 3.37E-06 1.31E-05 6.OOE-05 1.38E-04 0.1 1.56E-05 5.27E-07 1.38E-06 5.27E-06 2.72E-05 6.26E-05 0.15 5.06E-06 1.21E-07 3.68E-07 1.49E-06 8.35E-06 2.19E-05 0.3 8.44E-07 7.03E-09 2.84E-08 1.77E-07 1.11E-06 4.31E-06 0.5 2.42E-07 6.93E-10 3.57E-09 3.14E-08 2.64E-07 1.27E-06 0.75 8.73E-08 1.92E-10 6.64E-10 6.83E-09 7.77E-08 4.50E-07

1. 4.09E-08 1.53E-10 2.57E-10 2.19E-09 2.96E-08 2.01E-07 1.5 1.31E-08 1.23E-10 1.53E-10 4.56E-10 6.93E-09 5.75E-08
3. 1.50E-09 9.11E-11 1.01E-10 1.53E-10 4.77E-10 4.70E-09
5. 2.42E-10 9.11E-11 1.01E-10 1.53E-10 1.57E-10 6.17E-10 7.5 4.91E-11 9.11E-11 1.01E-10 1.53E-10 1.53E-10 1.95E-10
10. 1.45E-11 9.11E-11 9.11E-11 1.53E-10 1.53E-10 1.53E-10 Encl. Page 9 of 16

ATTACHMENT 2 Control Point Seismic Hazard Curves In Table Format (UPDATED REGIONAL CEUS-SSC CATALOG)

ToblaA Anl Mckai~n aint] Fradoffl Q~kQMi9 1-haTO,1 "urVAQfnr P('-A atfA-nnapg AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 6.88E-02 3.63E-02 5.50E-02 6.93E-02 8.47E-02 9.37E-02 0.001 4.95E-02 2.72E-02 3.90E-02 4.83E-02 6.17E-02 7.13E-02 0.005 1.88E-02 9.11E-03 1.29E-02 1.82E-02 2.39E-02 3.23E-02 0.01 1.03E-02 4.31E-03 6.09E-03 9.65E-03 1.34E-02 2.13E-02 0.015 6.64E-03 2.53E-03 3.47E-03 5.83E-03 8.85E-03 1.62E-02 0.03 2.71E-03 8.23E-04 1.13E-03 1.98E-03 3.79E-03 8.85E-03 0.05 1.31E-03 3.37E-04 4.70E-04 8.47E-04 1.84E-03 4.90E-03 0.075 7.14E-04 1.69E-04 2.39E-04 4.37E-04 1.01 E-03 2.84E-03 0.1 4.60E-04 1.07E-04 1.5 1E-04 2.84E-04 6.54E-04 1.82E-03 0.15 2.43E-04 5.58E-05 8.12E-05 1.55E-04 3.47E-04 9.11E-04 0.3 7.59E-05 1.64E-05 2.68E-05 5.20E-05 1. 1OE-04 2.46E-04 0.5 2.95E-05 5.66E-06 9.79E-06 2.1OE-05 4.43E-05 8.85E-05 0.75 1.28E-05 2.07E-06 3.79E-06 9.11E-06 1.98E-05 3.79E-05

1. 6.71E-06 9.11E-07 1.74E-06 4.63E-06 1.05E-05 2.07E-05 1.5 2.45E-06 2.35E-07 4.98E-07 1.60E-06 3.95E-06 8.12E-06
3. 3.19E-07 1.31E-08 3.42E-08 1.64E-07 5.05E-07 1.29E-06
5. 5.18E-08 9.93E-10 2.92E-09 1.95E-08 7.45E-08 2.46E-07 7.5 9.82E-09 1.98E-10 4.01E-10 2.80E-09 1.27E-08 5.27E-08
10. 2.65E-09 1.36E-10 1.69E-10 6.73E-10 3.28E-09 1.53E-08 Encl. Page 10 of 16

ATTACHMENT 2 Control Point Seismic Hazard Curves In Table Format (UPDATED REGIONAL CEUS-SSC CATALOG)

Table A-lb. Mean and Fractile Seismic Hazard Curves for 25 Hz at Oconee AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 7.92E-02 4.56E-02 6.83E-02 8.OOE-02 9.24E-02 9.93E-02 0.001 6.08E-02 3.57E-02 5.05E-02 6.OOE-02 7.34E-02 8.60E-02 0.005 2.71E-02 1.55E-02 2.01E-02 2.64E-02 3.33E-02 4.43E-02 0.01 1.79E-02 9.11E-03 1.21E-02 1.72E-02 2.25E-02 3.05E-02 0.015 1.33E-02 6.17E-03 8.47E-03 1.27E-02 1.72E-02 2.42E-02 0.03 6.96E-03 2.84E-03 3.95E-03 6.26E-03 9.24E-03 1.5 1E-02 0.05 3.85E-03 1.44E-03 1.95E-03 3.23E-03 5.20E-03 9.65E-03 0.075 2.25E-03 7.77E-04 1.05E-03 1.79E-03 3.09E-03 6.26E-03 0.1 1.50E-03 4.83E-04 6.64E-04 1.15E-03 2.1OE-03 4.37E-03 0.15 8.19E-04 2.46E-04 3.42E-04 6.09E-04 1.16E-03 2.46E-03 0.3 2.78E-04 8.OOE-05 1.16E-04 2.13E-04 4.01E-04 7.77E-04 0.5 1.21E-04 3.47E-05 5.27E-05 9.51E-05 1.79E-04 3.05E-04 0.75 6.01E-05 1.69E-05 2.64E-05 4.83E-05 9.11E-05 1.44E-04

1. 3.56E-05 9.51E-06 1.53E-05 2.92E-05 5.50E-05 8.47E-05 1.5 1.61E-05 3.79E-06 6.45E-06 1.31E-05 2.57E-05 3.90E-05
3. 3.37E-06 5.50E-07 1.05E-06 2.57E-06 5.58E-06 8.85E-06
5. 8.51E-07 9.37E-08 2.01E-07 5.91E-07 1.44E-06 2.57E-06 7.5 2.43E-07 1.77E-08 4.31E-08 1.49E-07 4.19E-07 8.23E-07
10. 9.06E-08 4.77E-09 1.25E-08 4.98E-08 1.55E-07 3.33E-07 Encl. Page 11 of 16

ATTACHMENT 2 Contrbl Point Seismic Hazard Curves In Table Format (UPDATED REGIONAL CEUS-SSC CATALOG)

Table A-ic. Mean and Fractile Seismic Hazard Curves for 10 Hz at Oconee AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 8.90E-02 6.45E-02 7.77E-02 8.98E-02 9.93E-02 9.93E-02 0.001 7.16E-02 4.83E-02 6.09E-02 7.13E-02 8.35E-02 9.24E-02 0.005 3.15E-02 1.95E-02 2.42E-02 3.09E-02 3.84E-02 4.56E-02 0.01 2.01E-02 1.13E-02 1.42E-02 1.98E-02 2.53E-02 3.09E-02 0.015 1.46E-02 7.55E-03 9.79E-03 1.42E-02 1.87E-02 2.39E-02 0.03 7.22E-03 3.23E-03 4.37E-03 6.73E-03 9.65E-03 1.36E-02 0.05 3.73E-03 1.51E-03 2.04E-03 3.28E-03 5.12E-03 8.12E-03 0.075 2.04E-03 7.45E-04 1.04E-03 1.72E-03 2.84E-03 4.90E-03 0.1 1.29E-03 4.37E-04 6.17E-04 1.05E-03 1.82E-03 3.28E-03 0.15 6.50E-04 2.04E-04 2.92E-04 5.20E-04 9.37E-04 1.72E-03 0.3 1.93E-04 5.50E-05 8.23E-05 1.55E-04 2.88E-04 4.90E-04 0.5 7.66E-05 2.07E-05 3.28E-05 6.26E-05 1.18E-04 1.87E-04 0.75 3.54E-05 8.85E-06 1.44E-05 2.88E-05 5.50E-05 8.47E-05

1. 1.97E-05 4.50E-06 7.66E-06 1.60E-05 3.14E-05 4.83E-05 1.5 8.12E-06 1.57E-06 2.84E-06 6.36E-06 1.32E-05 2.07E-05
3. 1.40E-06 1.77E-07 3.63E-07 9.93E-07 2.35E-06 4.13E-06
5. 3.02E-07 2.39E-08 5.50E-08 1.87E-07 5.20E-07 1.01E-06 7.5 7.53E-08 3.79E-09 9.93E-09 3.95E-08 1.29E-07 2.84E-07
10. 2.54E-08 9.79E-10 2.60E-09 1.18E-08 4.31E-08 1.02E-07 Encl. Page 12 of 16

ATTACHMENT 2 Control Point Seismic Hazard Curves In Table Format (UPDATED REGIONAL CEUS-SSC CATALOG) ah1d), fltU.

A -1 A Mwon -a"rlAC A OttOt, Qa;crn;f. 140,ffa"A V1111-wac f~nr AZ Hwf of nennglal A UKflt +/-VAtOAK 0110 LPtAOfl1flt Atuan. tI t~ USA V ~o.t,.'aa t AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 9.02E-02 6.64E-02 7.77E-02 8.98E-02 9.93E-02 9.93E-02 0.001 7.33E-02 4.83E-02 5.91E-02 7.34E-02 8.85E-02 9.65E-02 0.005 3.OOE-02 1.74E-02 2.22E-02 2.96E-02 3.79E-02 4.25E-02 0.01 1.74E-02 9.24E-03 1.23E-02 1.72E-02 2.25E-02 2.64E-02 0.015 1.18E-02 5.83E-03 7.89E-03 1.15E-02 1.55E-02 1.87E-02 0.03 4.99E-03 2.16E-03 2.96E-03 4.63E-03 6.83E-03 9.24E-03 0.05 2.27E-03 8.72E-04 1.23E-03 2.01E-03 3.19E-03 4.77E-03 0.075 1.12E-03 3.90E-04 5.66E-04 9.51E-04 1.57E-03 2.57E-03 0.1 6.54E-04 2.16E-04 3.14E-04 5.50E-04 9.37E-04 1.55E-03 0.15 3.OOE-04 9.37E-05 1.38E-04 2.49E-04 4.43E-04 7.23E-04 0.3 7.67E-05 2.16E-05 3.33E-05 6.36E-05 1.18E-04 1.82E-04 0.5 2.71E-05 6.73E-06 1.11E-05 2.19E-05 4.25E-05 6.45E-05 0.75 1.12E-05 2.35E-06 4.19E-06 8.85E-06 1.79E-05 2.84E-05

1. 5.75E-06 1.05E-06 1.92E-06 4.43E-06 9.37E-06 1.51E-05 1.5 2.07E-06 2.88E-07 5.66E-07 1.49E-06 3.47E-06 5.91E-06
3. 2.76E-07 1.95E-08 4.70E-08 1.64E-07 4.77E-07 9.37E-07
5. 4.86E-08 1.84E-09 5.12E-09 2.25E-08 8.12E-08 1.87E-07 7.5 1.03E-08 3.14E-10 7.55E-10 3.73E-09 1.64E-08 4.31E-08
10. 3.09E-09 1.60E-10 2.49E-10 9.79E-10 4.63E-09 1.36E-08 Encl. Page 13 of 16

ATTACHMENT 2 Control Point Seismic Hazard Curves In Table Format (UPDATED REGIONAL CEUS-SSC CATALOG)

Table A-le. Mean and Fractile Seismic Hazard Curves for 2.5 Hz at Oconee AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 8.25E-02 5.91E-02 6.83E-02 8.23E-02 9.79E-02 9.93E-02 0.001 6.29E-02 4.01E-02 4.83E-02 6.17E-02 7.89E-02 8.72E-02 0.005 2.08E-02 1.15E-02 1.46E-02 2.01E-02 2.68E-02 3.19E-02 0.01 1.04E-02 5.20E-03 6.93E-03 1.01E-02 1.40E-02 1.69E-02 0.015 6.40E-03 2.88E-03 3.95E-03 6.OOE-03 8.85E-03 1.13E-02 0.03 2.20E-03 7.77E-04 1.13E-03 1.95E-03 3.23E-03 4.63E-03 0.05 8.22E-04 2.46E-04 3.73E-04 6.83E-04 1.25E-03 1.95E-03 0.075 3.43E-04 9.24E-05 1.46E-04 2.72E-04 5.35E-04 8.47E-04 0.1 1.79E-04 4.50E-05 7.34E-05 1.40E-04 2.88E-04 4.50E-04 0.15 7.15E-05 1.64E-05 2.72E-05 5.42E-05 1.16E-04 1.82E-04 0.3 1.51E-05 2.57E-06 4.77E-06 1.1OE-05 2.49E-05 4.19E-05 0.5 4.69E-06 5.42E-07 1.16E-06 3.14E-06 8.OOE-06 1.42E-05 0.75 1.75E-06 1.38E-07 3.28E-07 1.07E-06 3.05E-06 5.75E-06

1. 8.27E-07 4.63E-08 1.21E-07 4.56E-07 1.46E-06 2.88E-06 1.5 2.65E-07 8.47E-09 2.60E-08 1.23E-07 4.70E-07 1.01E-06
3. 2.86E-08 3.90E-10 1.23E-09 8.47E-09 4.63E-08 1.25E-07
5. 4.22E-09 1.53E-10 1.95E-10 8.72E-10 5.91 E-09 1.95E-08 7.5 7.75E-10 1.011E-10 1.49E-10 2.04E-10 9.93E-10 3.63E-09
10. 2.11E-10 9.11E-11 1.02E-10 1.53E-10 3.14E-10 1.04E-09 Encl. Page 14 of 16

ATTACHMENT 2 Control Point Seismic Hazard Curves In Table Format (UPDATED REGIONAL CEUS-SSC CATALOG)

Table A-lf. Mean and Fractile Seismic Hazard Curves for 1 Hz at Oconee AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 5.55E-02 2.88E-02 4.07E-02 5.58E-02 7.03E-02 8.OOE-02 0.001 3.61E-02 1.74E-02 2.53E-02 3.63E-02 4.63E-02 5.58E-02 0.005 9.29E-03 3.95E-03 5.75E-03 8.85E-03 1.27E-02 1.60E-02 0.01 4.43E-03 1.38E-03 2.22E-03 4.01E-03 6.64E-03 8.85E-03 0.015 2.58E-03 6.26E-04 1.08E-03 2.19E-03 4.07E-03 5.83E-03 0.03 7.58E-04 1.21E-04 2.25E-04 5.50E-04 1.25E-03 2.13E-03 0.05 2.34E-04 2.96E-05 5.66E-05 1.51E-04 3.79E-04 7.34E-04 0.075 8.06E-05 8.98E-06 1.77E-05 4.77E-05 1.36E-04 2.64E-04 0.1 3.67E-05 3.68E-06 7.66E-06 2.04E-05 6.45E-05 1.20E-04 0.15 1.22E-05 1.04E-06 2.25E-06 6.36E-06 2.16E-05 4.13E-05 0.3 2.12E-06 9.65E-08 2.53E-07 9.51E-07 3.57E-06 8.23E-06 0.5 6.05E-07 1.32E-08 4.25E-08 2.16E-07 9.93E-07 2.53E-06 0.75 2.13E-07 2.25E-09 8.85E-09 5.83E-08 3.33E-07 9.51E-07

1. 9.70E-08 6.54E-10 2.68E-09 2.10E-08 1.42E-07 4.50E-07 1.5 2.96E-08 1.92E-10 4.90E-10 4.31E-09 3.79E-08 1.38E-07
3. 2.99E-09 1.05E-10 1.53E-10 2.88E-10 2.64E-09 1.31E-08
5. 4.35E-10 9.11E-11 1.01E-10 1.53E-10 3.57E-10 1.64E-09 7.5 8.04E-11 9.11E-11 1.01E-10 1.53E-10 1.55E-10 3.42E-10
10. 2.22E-11 9.111E-11 1.01E-10 1.53E-10 1.53E-10 1.69E-10 Encl. Page 15 of 16

ATTACHMENT 2 Control Point Seismic Hazard Curves In Table Format (UPDATED REGIONAL CEUS-SSC CATALOG)

Table A-lg. Mean and Fractile Seismic Hazard Curves for 0.5 Hz at Oconee AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 2.97E-02 1.57E-02 2.25E-02 2.88E-02 3.73E-02 4.43E-02 0.001 1.79E-02 9.11E-03 1.27E-02 1.69E-02 2.32E-02 2.96E-02 0.005 4.70E-03 1.34E-03 2.25E-03 4.31E-03 7.13E-03 9.37E-03 0.01 2.19E-03 3.37E-04 6.93E-04 1.77E-03 3.73E-03 5.42E-03 0.015 1.23E-03 1.27E-04 2.84E-04 8.47E-04 2.19E-03 3.52E-03 0.03 3.32E-04 1.90E-05 4.56E-05 1.72E-04 5.83E-04 1.21E-03 0.05 9.64E-05 4.01E-06 9.65E-06 4.01E-05 1.62E-04 3.84E-04 0.075 3.15E-05 1.07E-06 2.64E-06 1.1OE-05 5.27E-05 1.29E-04 0.1 1.36E-05 3.95E-07 1.05E-06 4.31E-06 2.32E-05 5.58E-05 0.15 4.12E-06 8.98E-08 2.68E-07 1.11E-06 6.83E-06 1.77E-05 0.3 6.18E-07 5.05E-09 2.01E-08 1.21E-07 8.12E-07 3.14E-06 0.5 1.70E-07 5.20E-10 2.46E-09 2.1OE-08 1.82E-07 8.85E-07 0.75 6.03E-08 1.74E-10 4.83E-10 4.56E-09 5.27E-08 3.05E-07

1. 2.81E-08 1.53E-10 2.13E-10 1.46E-09 2.01E-08 1.34E-07 1.5 8.95E-09 1.11E-10 1.53E-10 3.33E-10 4.63E-09 3.84E-08
3. 1.01E-09 9.11E-11 1.01E-10 1.53E-10 3.57E-10 3.09E-09
5. 1.64E-10 9.11E-11 1.01E-10 1.53E-10 1.53E-10 4.43E-10 7.5 3.33E-11 9.11E-11 9.37E-11 1.53E-10 1.53E-10 1.72E-10
10. 9.84E-12 9.11E-11 9.11E-11 1.53E-10 1.53E-10 1.53E-10 Encl. Page 16 of 16
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