RC-14-0182, South Carolina Electric & Gas Response to NRC Request for Additional Information Associated with Near-Term Task Force Recommendation 2.1, Seismic Re-Evaluations

South Carolina Electric & Gas Response to NRC Request for Additional Information Associated with Near-Term Task Force Recommendation 2.1, Seismic Re-Evaluations

ML14318A314
Person / Time
Site:	Summer
Issue date:	11/12/2014
From:	Gatlin T SCANA Corp, South Carolina Electric & Gas Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RC-14-0182
Download: ML14318A314 (15)

Text

Thomas D. Gatlin Vice-PresidentNuclear Operations (803) 345-4342 AC P A SCANA COMPANY November 12, 2014 RC 0182 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001

Subject:

VIRGIL C. SUMMER NUCLEAR STATION (VCSNS) UNIT 1 DOCKET NO. 50-395 OPERATING LICENSE NO. NPF-12 SOUTH CAROLINA ELECTRIC & GAS (SCE&G) RESPONSE TO NRC REQUEST FOR ADDITIONAL INFORMATION ASSOCIATED WITH NEAR-TERM TASK FORCE RECOMMENDATION 2.1, SEISMIC RE-EVALUATIONS

References:

1. NRC Letter, Request for Information Pursuantto Title 10 of the Code of Federal Regulations 50.54(0 RegardingRecommendations 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 [ML12053A340]

2. NRC Letter, Request for Additional Information Associated with Near-Term Task Force Recommendation 2.1, Seismic Re-evaluations Related to Southeastern Catalog Changes (TAC Nos. MF3724, MF3736, MF3737, MF3738, and MF3831), dated October 23, 2014 On March 12, 2012, the U.S. Nuclear Regulatory Commission (NRC) staff issued a letter requesting additional information per Title 10 of the Code of FederalRegulations,50.54(f)

(hereafter called the 50.54(f) letter). The 50.54(f) letter requested that licensees conduct seismic hazard reevaluations to reevaluate the seismic hazards at their sites against present-day NRC requirements (reference 1). Following the NRC staffs initial review of the seismic hazard reevaluation report, the staff has determined additional information is necessary to allow the staff to complete its review (reference 2).

South Carolina Electric & Gas Company (SCE&G), acting for itself and as agent for South Carolina Public Service Authority is submitting this response to the request for additional information. SCE&G's response is provided within Enclosure I and Attachments I and II.

This letter contains no new regulatory commitments.

Should you have any questions concerning the content of this letter, please contact Bruce L.

Thompson at (803) 931-5042.

Virgil C.Summer Station . Post Office Box 88. Jenkinsville, SC. 29065. F(803) 941-9776 \--

Document Control Desk CR-12-01097 RC-14-0182 Page 2 of 2 I declare under penalty of perjury that the foregoing is true and correct.

/ Executed

/-12-on / , Thomas D. Gatlin BJD/TDG/sr

Enclosure:

I. SCE&G Response to Request for Additional Information Attachments:

I. Control point seismic hazard curves tabular information developed using the currently-endorsed CEUS-SSC II. Control point seismic hazard curves in tabular form developed using the updated regional catalog c: K. B. Marsh E. J. Leeds K. M. Sutton S. A. Byrne V. M. McCree NRC Resident Inspector J. B. Archie S. A. Williams RTS (CR-12-01097)

N. S. Cams R. F. Kuntz File (815.07)

J. H. Hamilton N. J. DiFrancesco PRSF (RC-14-0182)

J. W. Williams W. M. Cherry

Document Control Desk CR-12-01097 RC-14-0182 Enclosure I Page 1 of 3 VIRGIL C. SUMMER NUCLEAR STATION (VCSNS) UNIT I ENCLOSURE I SCE&G Response to Request for Additional Information Request for Additional Information Consistent with the request for information issued pursuant to Title 10 of the Code of Federalregulations,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 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.

SCE&G Response:

The NRC has requested the changes made to the CEUS-SSC catalog have a SSHAC Level 2 review. To ensure the catalog changes made for the Recommendation 2.1 seismic hazard reevaluations represents the center, body, and range of technically defensible interpretations, a SSHAC Level 2 study will be performed and submitted.

This SSHAC Level 2 review will be submitted by April 30, 2015.

The review of the CEUS SSC catalog published in NUREG-2115 focused on 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 recharacterized 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, declustering, and completeness calculations. The additional detailed description of the catalog update was submitted to the NRC by an EPRI letter dated August 28, 2014 (Reference 7).

Document Control Desk CR-12-01097 RC-14-0182 Enclosure I Page 2 of 3 The impacts of other earthquake events in the region since the time period covered by the CEUS-SSC Catalog update were not included in this review. As stated in the NRC endorsement letter of the SPID (Reference 5):

Prior to issuing the CEUS-SSC model, the Technical Integration Team considered potentially significant events (such as the 2011 Mineral, VA earthquake) that had occurred after the model was developed, and determined that those events did not change their interpretations of seismic sources or earthquake recurrence rates. If a significant earthquake in the CEUS were to occur or new information were to emerge during the reevaluation period 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 appropriately respond to the 50.54(f) request.

Earthquakes in the region since the CEUS-SSC model will be evaluated as part of the development of the site's Seismic Probabilistic Risk Assessment.

Attachments I and II provide, in table form, the 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 reevaluation for V.C. Summer Station.

Document Control Desk CR-12-01097 RC-14-0182 Enclosure I Page 3 of 3

References:

1. NRC Letter, Request for Information Pursuantto Title 10 of the Code of Federal Regulations 50.54(0 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 [ML12053A340]

2. NEI Letter, ProposedPath Forwardfor NTTF Recommendation 2.1: Seismic Reevaluations, dated April 9, 2013, ADAMS Accession No. [ML13101A379]

3. NRC Letter, Electric Power Research Institute Final Draft Report XXXXX)(, "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 No. [ML13106A331]

4. EPRI Report 1025287, Seismic Evaluation Guidance, Screening, Prioritizationand Implementation Details (SPID) for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic, ADAMS Accession No. [ML12333A170]

5. NRC Letter, Endorsement of EPRI Final Draft Report 1025287, "SeismicEvaluation Guidance," dated February 15, 2013, ADAMS Accession No. [ML12319A074]

6. SCE&G Letter, South Carolina Electric & Gas (SCE&G) Seismic Hazardand Screening Report (CEUS Sites), Response to NRC request for information pursuantto 10 CFR 50.54(0 regarding Recommendation 2.1 of the Near-Term Task Force review of insights from the Fukushima Dai-ichiaccident dated March 26, 2014, RC-14-0048

7. EPRI (2014). Review of EPRI 1021097 Earthquake Catalog for RIS Earthquakesin the Southeastern U. S. and Earthquakesin South CarolinaNear the Time of the 1886 CharlestonEarthquake Sequence, transmitted by letter from J. Richards to NRC on August 28, 2014, ADAMS Accession No. [ML14260A209]

8. NRC Letter, Request for Additional Information Associated with Near-Term Task Force Recommendation 2.1, Seismic Re-evaluations Related to Southeastern Catalog Changes (TACNos. MF3724, MF3736, MF3737, MF3738, and MF3831), dated October 23, 2014

Document Control Desk CR-12-01097 RC-14-0182 Attachment I Page 1 of 5 VIRGIL C. SUMMER NUCLEAR STATION (VCSNS) UNIT 1 Attachment I Control point seismic hazard curves tabular information developed using the currently-endorsed CEUS-SSC

Document Control Desk CR-1 2-01097 RC-14-0182 Attachment I Page 2 of 5 Appendix A Table A-la. Mean and Fractile Seismic Hazard Curves for PGA at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0,0005 4.77E-02 3.14E-02 4.07E-02 4.83E-02 5.50E-02 5.91E-02 0.001 3.87E-02 2.32E-02 3.19E-02 3.90E-02 4.63E-02 5.12E-02 0.005 1.65E-02 8.72E-03 1.18E-02 1.60E-02 2.04E-02 2.80E-02 0.01 9.55E-03 4.83E-03 6.26E-03 8.85E-03 1.20E-02 1.90E-02 0.015 6.63E-03 3.05E-03 4.01E-03 6.OOE-03 8.60E-03 1.42E-02 0.03 3.29E-03 1.11E-03 1.60E-03 2.72E-03 4.77E-03 8.12E-03 0.05 1.80E-03 4.43E-04 7.03E-04 1.34E-03 2.80E-03 5.12E-03 0.075 1.06E-03 1.98E-04 3.42E-04 7.23E-04 1.67E-03 3.33E-03 0.1 6.99E-04 1.10E-04 2.07E-04 4.63E-04 1.08E-03 2.32E-03 0.15 3.74E-04 4.83E-05 1.02E-04 2.46E-04 5.66E-04 1.31E-03 0.3 1.16E-04 1.29E-05 2.88E-05 7.66E-05 1.77E-04 3.79E-04 0.5 4.42E-05 4.37E-06 1.04E-05 2.96E-05 7.13E-05 1.32E-04 0.75 1.92E-05 1.57E-06 4.19E-06 1.29E-05 3.19E-05 5.91E-05

1. 1.01 E-05 6.93E-07 1.98E-06 6.54E-06 1.72E-05 3.23E-05 1.5 3.70E-06 1.84E-07 5.91E-07 2.22E-06 6.26E-06 1.27E-05

3. 4.88E-07 1.1OE-08 4.25E-08 2.29E-07 7.89E-07 2.01E-06

5. 8.03E-08 8.60E-10 3.79E-09 2.80E-08 1.16E-07 3.79E-07 7.5 1.54E-08 1.87E-10 4.90E-10 4.07E-09 2.01E-08 8.35E-08

10. 4.20E-09 1.29E-10 1.84E-10 9.79E-10 5.20E-09 2.39E-08 Table A-i b. Mean and Fractile Seismic Hazard Curves for 25 Hz at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0,0005 5.16E-02 3.79E-02 4.56E-02 5.20E-02 5.83E-02 6.17E-02 0.001 4.42E-02 3.01 E-02 3.79E-02 4.43E-02 5.12E-02 5.58E-02 0.005 2.34E-02 1.36E-02 1.79E-02 2.32E-02 2.80E-02 3.57E-02 0.01 1.56E-02 8.60E-03 1.15E-02 1.49E-02 1.90E-02 2.64E-02 0.015 1.17E-02 6.36E-03 8.35E-03 1.11E-02 1.44E-02 2.1OE-02 0.03 6.70E-03 3.33E-03 4.31E-03 6.17E-03 8.72E-03 1.31E-02 0.05 4.1OE-03 1.74E-03 2.35E-03 3.63E-03 5.66E-03 8.60E-03 0.075 2.63E-03 9.24E-04 1.32E-03 2.25E-03 3.84E-03 5.91 E-03 0.1 1.86E-03 5.66E-04 8.47E-04 1.53E-03 2.80E-03 4.43E-03 0.15 1.09E-03 2.64E-04 4.37E-04 8.60E-04 1.67E-03 2.84E-03 0.3 3.88E-04 6.73E-05 1.34E-04 3.05E-04 5.91E-04 1.07E-03 0.5 1.67E-04 2.53E-05 5.42E-05 1.32E-04 2.60E-04 4.37E-04 0.75 8.18E-05 1.16E-05 2.49E-05 6.54E-05 1.31E-04 2.07E-04

1. 4.78E-05 6.26E-06 1.40E-05 3.84E-05 7.89E-05 1.23E-04 1.5 2.12E-05 2.39E-06 6.OOE-06 1.72E-05 3.57E-05 5.66E-05

Document Control Desk CR-12-01097 RC-14-0182 Attachment I Page 3 of 5

3. 4.30E-06 3.42E-07 9.93E-07 3.23E-06 7.45E-06 1.25E-05

5. 1.06E-06 5.75E-08 1.87E-07 7.03E-07 1.82E-06 3.57E-06 7.5 2.98E-07 1.05E-08 3.79E-08 1.69E-07 4.98E-07 1.11E-06

10. 1.10E-07 2.84E-09 1.10E-08 5.50E-08 1.82E-07 4.50E-07 Table A-ic. Mean and Fractile Seismic Hazard Curves for 10 Hz at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 5.49E-02 4.43E-02 4.90E-02 5.50E-02 6.09E-02 6.45E-02 0.001 4.86E-02 3.68E-02 4.25E-02 4.90E-02 5.50E-02 5.91 E-02 0.005 2.65E-02 1.67E-02 2.07E-02 2.64E-02 3.19E-02 3.68E-02 0.01 1.72E-02 1.01E-02 1.27E-02 1.69E-02 2.13E-02 2.57E-02 0.015 1.26E-02 7.13E-03 9.11E-03 1.23E-02 1.57E-02 1.98E-02 0.03 6.83E-03 3.57E-03 4.56E-03 6.45E-03 8.85E-03 1.18E-02 0.05 4.01E-03 1.82E-03 2.42E-03 3.68E-03 5.50E-03 7.45E-03 0.075 2.48E-03 9.51E-04 1.34E-03 2.22E-03 3.57E-03 4.98E-03 0.1 1.69E-03 5.66E-04 8.35E-04 1.46E-03 2.49E-03 3.68E-03 0.15 9.34E-04 2.53E-04 4.07E-04 7.77E-04 1.42E-03 2.22E-03 0.3 2.91E-04 5.50E-05 1.04E-04 2.32E-04 4.56E-04 7.45E-04 0.5 1.12E-04 1.69E-05 3.52E-05 8.98E-05 1.82E-04 2.88E-04 0.75 5.03E-05 6.64E-06 1.46E-05 3.95E-05 8.35E-05 1.31 E-04

1. 2.76E-05 3.28E-06 7.66E-06 2.16E-05 4.63E-05 7.34E-05 1.5 1.11E-05 1.10E-06 2.80E-06 8.35E-06 1.92E-05 3.14E-05

3. 1.88E-06 1.18E-07 3.63E-07 1.29E-06 3.28E-06 6.OOE-06

5. 3.99E-07 1.64E-08 5.66E-08 2.32E-07 6.73E-07 1.49E-06 7.5 9.84E-08 2.72E-09 9.93E-09 4.83E-08 1.60E-07 4.01 E-07

10. 3.31E-08 7.13E-10 2.57E-09 1.40E-08 5.27E-08 1.44E-07 Table A-Id. Mean and Fractile Seismic Hazard Curves for 5 Hz at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 5.52E-02 4.43E-02 4.90E-02 5.50E-02 6.09E-02 6.54E-02 0.001 4.88E-02 3.63E-02 4.13E-02 4.90E-02 5.58E-02 6.OOE-02 0.005 2.49E-02 1.49E-02 1.90E-02 2.46E-02 3.09E-02 3.47E-02 0.01 1.49E-02 8.35E-03 1.08E-02 1.46E-02 1.90E-02 2.19E-02 0.015 1.03E-02 5.66E-03 7.34E-03 9.93E-03 1.32E-02 1.57E-02 0.03 5.01E-03 2.49E-03 3.28E-03 4.77E-03 6.64E-03 8.35E-03 0.05 2.73E-03 1.15E-03 1.60E-03 2.53E-03 3.84E-03 5.05E-03 0.075 1.58E-03 5.50E-04 8.12E-04 1.42E-03 2.32E-03 3.23E-03 0.1 1.02E-03 3.05E-04 4.77E-04 8.85E-04 1.53E-03 2.25E-03 0.15 5.1OE-04 1.25E-04 2.1OE-04 4.19E-04 7.89E-04 1.23E-03 0.3 1.31 E-04 2.29E-05 4.37E-05 1.04E-04 2.07E-04 3.42E-04

Document Control Desl CR-1 2-01097 RC-14-0182 Attachment I Page 4 of 5 1 0.5 4.36E-05 I 6.09E-06 1.29E-05 3.37E-05 7.13E-05 1.16E-04 0.75 1.73E-05 2.01 E-06 4.63E-06 1.31 E-05 2.92E-05 4.77E-05

1. 8.72E-06 8.60E-07 2.13E-06 6.36E-06 1.49E-05 2.49E-05 1.5 3.11E-06 2.25E-07 6.36E-07 2.13E-06 5.42E-06 9.65E-06

3. 4.22E-07 1.57E-08 5.50E-08 2.35E-07 7.34E-07 1.53E-06

5. 7.60E-08 1.44E-09 5.83E-09 3.28E-08 1.27E-07 3.09E-07 7.5 1.64E-08 2.72E-10 8.60E-10 5.42E-09 2.60E-08 7.23E-08

10. 5.04E-09 1.53E-10 2.64E-10 1.40E-09 7.55E-09 2.29E-08 Table A-le. Mean and Fractile Seismic Hazard Curves for 2.5 Hz at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 5.29E-02 4.13E-02 4.63E-02 5.27E-02 5.91E-02 6.36E-02 0.001 4.47E-02 3.19E-02 3.68E-02 4.43E-02 5.27E-02 5.66E-02 0.005 1.87E-02 1.08E-02 1.36E-02 1.82E-02 2.39E-02 2.76E-02 0.01 1.01E-02 5.42E-03 7.03E-03 9.79E-03 1.31E-02 1.57E-02 0.015 6.56E-03 3.33E-03 4.37E-03 6.26E-03 8.72E-03 1.08E-02 0.03 2.86E-03 1.18E-03 1.67E-03 2.64E-03 4.07E-03 5.20E-03 0.05 1.41E-03 4.56E-04 6.93E-04 1.25E-03 2.13E-03 2.92E-03 0.075 7.35E-04 1.90E-04 3.05E-04 6.OOE-04 1.16E-03 1.74E-03 0.1 4.36E-04 9.51E-05 1.62E-04 3.33E-04 7.03E-04 1.15E-03 0.15 1.92E-04 3.28E-05 5.91E-05 1.34E-04 3.09E-04 5.50E-04 0.3 3.94E-05 4.43E-06 9.24E-06 2.49E-05 6.45E-05 1.16E-04 0.5 1.12E-05 8.85E-07 2.13E-06 6.93E-06 1.90E-05 3.47E-05 0.75 3.98E-06 2.25E-07 6.17E-07 2.32E-06 6.93E-06 1.34E-05

1. 1.87E-06 7.89E-08 2.42E-07 1.01 E-06 3.33E-06 6.54E-06 1.5 6.1OE-07 1.49E-08 5.50E-08 2.76E-07 1.1OE-06 2.32E-06

3. 7.17E-08 6.45E-10 3.01E-09 2.1OE-08 1.20E-07 3.19E-07

5. 1.15E-08 1.53E-10 3.19E-10 2.22E-09 1.67E-08 5.50E-08 7.5 2.26E-09 1.01E-10 1.53E-10 3.84E-10 2.88E-09 1.11E-08

10. 6.46E-10 9.11E-11 1.13E-10 1.74E-10 8.23E-10 3.14E-09 Table A-if. Mean and Fractile Seismic Hazard Curves for 1 Hz at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 3.76E-02 2.25E-02 2.84E-02 3.84E-02 4.56E-02 5.12E-02 0.001 2.63E-02 1.42E-02 1.90E-02 2.64E-02 3.28E-02 3.79E-02 0.005 8.05E-03 3.68E-03 5.12E-03 7.66E-03 1.08E-02 1.36E-02 0.01 4.20E-03 1.51 E-03 2.29E-03 3.84E-03 6.09E-03 8.OOE-03 0.015 2.62E-03 7.66E-04 1.25E-03 2.32E-03 3.95E-03 5.42E-03 0.03 9.31E-04 1.82E-04 3.37E-04 7.45E-04 1.51 E-03 2.32E-03 0.05 3.55E-04 5.05E-05 1.01E-04 2.49E-04 6.09E-04 1.01 E-03

Document Control Desk CR-12-01097 RC-14-0182 Attachment I Page 5 of 5 0.075 1.46E-04 1.67E-05 3.42E-05 9.11 E-05 2.49E-04 4.56E-04 0.1 7.35E-05 7.03E-06 1.49E-05 4.19E-05 1.25E-04 2.42E-04 0.15 2.62E-05 1.95E-06 4.43E-06 1.36E-05 4.43E-05 9.11E-05 0.3 4.28E-06 1.69E-07 4.77E-07 1.92E-06 7.13E-06 1.64E-05 0.5 1.16E-06 2.22E-08 8.12E-08 4.19E-07 1.90E-06 4.90E-06 0.75 4.09E-07 3.79E-09 1.72E-08 1.13E-07 6.45E-07 1.90E-06

1. 1.90E-07 1.08E-09 5.27E-09 4.07E-08 2.80E-07 9.24E-07 1.5 6.OOE-08 2.25E-10 9.37E-10 8.60E-09 7.66E-08 3.01E-07

3. 6.50E-09 1.04E-10 1.53E-10 4.90E-10 5.83E-09 3.14E-08

5. 9.90E-10 9.11E-11 1.01E-10 1.53E-10 7.13E-10 4.31E-09 7.5 1.89E-10 9.11E-11 1.01E-10 1.53E-10 2.04E-10 8.35E-10

10. 5.31E-11 9.11E-11 1.01E-10 1.53E-10 1.53E-10 2.96E-10 Table A-lg. Mean and Fractile Seismic Hazard Curves for 0.5 Hz at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 2.07E-02 1.21 E-02 1.57E-02 2.01E-02 2.57E-02 3.01E-02 0.001 1.32E-02 7.23E-03 9.37E-03 1.27E-02 1.69E-02 2.1OE-02 0.005 4.14E-03 1.25E-03 2.04E-03 3.79E-03 6.26E-03 8.23E-03 0.01 2.02E-03 3.79E-04 7.03E-04 1.64E-03 3.33E-03 4.83E-03 0.015 1.15E-03 1.55E-04 3.14E-04 8.47E-04 1.95E-03 3.19E-03 0.03 3.32E-04 2.60E-05 5.83E-05 1.90E-04 5.91E-04 1.15E-03 0.05 1.08E-04 5.83E-06 1.38E-05 4.70E-05 1.87E-04 4.13E-04 0.075 4.OOE-05 1.62E-06 4.07E-06 1.40E-05 6.64E-05 1.62E-04 0.1 1.90E-05 6.09E-07 1.64E-06 5.91 E-06 3.01 E-05 8.OOE-05 0.15 6.47E-06 1.40E-07 4.25E-07 1.77E-06 9.51E-06 2.92E-05 0.3 1.04E-06 8.23E-09 3.42E-08 2.07E-07 1.36E-06 5.42E-06 0.5 2.84E-07 7.89E-10 4.19E-09 3.73E-08 3.23E-07 1.64E-06 0.75 1.02E-07 1.95E-10 7.77E-10 8.60E-09 9.11E-08 5.75E-07

1. 4.77E-08 1.53E-10 2.76E-10 2.76E-09 3.52E-08 2.53E-07 1.5 1.54E-08 1.01E-10 1.53E-10 5.50E-10 8.OOE-09 7.45E-08

3. 1.76E-09 9.11E-11 1.01E-10 1.53E-10 5.20E-10 6.93E-09

5. 2.80E-10 9.11E-11 1.01E-10 1.53E-10 1.62E-10 9.93E-10 7.5 5.55E-11 9.11E-11 9.11E-11 1.53E-10 1.53E-10 2.53E-10

10. 1.60E-11 9.11E-11 9.11E-1I 1.53E-10 1.53E-10 1.53E-10

Document Control Desk CR-12-01097 RC-14-0182 Attachment II Page 1 of 5 VIRGIL C. SUMMER NUCLEAR STATION (VCSNS) UNIT I Attachment II Control point seismic hazard curves in tabular form developed using the updated regional catalog

Document Control Desk CR-1 2-01097 RC-14-0182 Attachment II Page 2 of 5 Appendix A Table A-la. Mean and Fractile Seismic Hazard Curves for PGA at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 4.52E-02 2.96E-02 3.84E-02 4.56E-02 5.27E-02 5.66E-02 0.001 3.63E-02 2.13E-02 2.96E-02 3.68E-02 4.37E-02 4.83E-02 0.005 1.48E-02 7.45E-03 1.04E-02 1.42E-02 1.82E-02 2.57E-02 0.01 8.25E-03 3.95E-03 5.27E-03 7.66E-03 1.04E-02 1.72E-02 0.015 5.63E-03 2.46E-03 3.28E-03 5.05E-03 7.34E-03 1.27E-02 0.03 2.71E-03 8.23E-04 1.21E-03 2.22E-03 4.01E-03 6.93E-03 0.05 1.44E-03 3.09E-04 4.98E-04 1.04E-03 2.29E-03 4.25E-03 0.075 8.13E-04 1.34E-04 2.29E-04 5.20E-04 1.31E-03 2.72E-03 0.1 5.21E-04 7.34E-05 1.31E-04 3.14E-04 8.23E-04 1.87E-03 0.15 2.63E-04 3.09E-05 6.26E-05 1.53E-04 3.95E-04 1.01E-03 0.3 7.23E-05 6.83E-06 1.72E-05 4.37E-05 1.05E-04 2.60E-04 0.5 2.55E-05 2.25E-06 5.75E-06 1.64E-05 3.95E-05 8.12E-05 0.75 1.05E-05 8.23E-07 2.19E-06 6.83E-06 1.72E-05 3.19E-05

1. 5.38E-06 3.68E-07 1.01 E-06 3.42E-06 8.98E-06 1.67E-05 1.5 1.93E-06 9.37E-08 2.92E-07 1.15E-06 3.23E-06 6.45E-06

3. 2.50E-07 5.66E-09 2.13E-08 1.20E-07 4.01E-07 1.01E-06

5. 4.1OE-08 4.83E-10 1.95E-09 1.49E-08 6.09E-08 1.95E-07 7.5 7.90E-09 1.57E-10 3.09E-10 2.16E-09 1.08E-08 4.13E-08

10. 2.18E-09 1.10E-10 1.57E-10 5.42E-10 2.80E-09 1.21E-08 Table A-lb. Mean and Fractile Seismic Hazard Curves for 25 Hz at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 4.91E-02 3.57E-02 4.31E-02 4.98E-02 5.50E-02 5.91E-02 0.001 4.18E-02 2.84E-02 3.52E-02 4.19E-02 4.83E-02 5.27E-02 0.005 2.14E-02 1.20E-02 1.62E-02 2.1OE-02 2.57E-02 3.33E-02 0.01 1.38E-02 7.34E-03 9.79E-03 1.32E-02 1.69E-02 2.39E-02 0.015 1.02E-02 5.27E-03 7.03E-03 9.65E-03 1.27E-02 1.90E-02 0.03 5.65E-03 2.64E-03 3.52E-03 5.20E-03 7.34E-03 1.15E-02 0.05 3.38E-03 1.32E-03 1.84E-03 2.96E-03 4.70E-03 7.34E-03 0.075 2.12E-03 6.73E-04 9.93E-04 1.77E-03 3.19E-03 4.98E-03 0.1 1.47E-03 4.01 E-04 6.09E-04 1.16E-03 2.29E-03 3.73E-03 0.15 8.34E-04 1.84E-04 2.96E-04 6.17E-04 1.31E-03 2.35E-03 0.3 2.72E-04 4.50E-05 8.35E-05 1.92E-04 4.19E-04 8.35E-04 0.5 1.08E-04 1.55E-05 3.28E-05 7.66E-05 1.67E-04 3.14E-04 0.75 4.92E-05 6.26E-06 1.49E-05 3.63E-05 7.77E-05 1.36E-04

1. 2.76E-05 3.37E-06 8.OOE-06 2.1OE-05 4.50E-05 7.45E-05 1.5 1.17E-05 1.29E-06 3.19E-06 8.85E-06 1.92E-05 3.19E-05

3. 2.25E-06 1.84E-07 4.90E-07 1.60E-06 3.84E-06 6.83E-06

5. 5.49E-07 3.01E-08 8.98E-08 3.52E-07 9.51E-07 1.84E-06 7.5 1.54E-07 6.OOE-09 1.87E-08 8.60E-08 2.60E-07 5.83E-07

10. 5.68E-08 1.64E-09 5.42E-09 2.88E-08 9.65E-08 2.25E-07

Document Control Desk CR-I 2-01097 RC-14-0182 Attachment II Page 3 of 5 Table A-Ic. Mean and Fractile Seismic Hazard Curves for 10 Hz at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 5.23E-02 4.25E-02 4.63E-02 5.27E-02 5.83E-02 6.17E-02 0.001 4.61 E-02 3.47E-02 3.95E-02 4.63E-02 5.20E-02 5.58E-02 0.005 2.44E-02 1.49E-02 1.87E-02 2.42E-02 2.96E-02 3.42E-02 0.01 1.54E-02 8.72E-03 1.11E-02 1.51E-02 1.90E-02 2.35E-02 0.015 1.11E-02 6.09E-03 7.77E-03 1.08E-02 1.40E-02 1.79E-02 0.03 5.82E-03 2.92E-03 3.79E-03 5.50E-03 7.55E-03 1.02E-02 0.05 3.34E-03 1.42E-03 1.95E-03 3.05E-03 4.63E-03 6.36E-03 0.075 2.02E-03 7.13E-04 1.04E-03 1.79E-03 2.96E-03 4.25E-03 0.1 1.36E-03 4.13E-04 6.26E-04 1.15E-03 2.07E-03 3.09E-03 0.15 7.23E-04 1.77E-04 2.84E-04 5.75E-04 1.13E-03 1.84E-03 0.3 2.04E-04 3.63E-05 6.54E-05 1.51E-04 3.23E-04 5.75E-04 0.5 7.16E-05 1.04E-05 2.19E-05 5.20E-05 1.15E-04 2.01E-04 0.75 2.98E-05 3.79E-06 8.72E-06 2.22E-05 4.90E-05 8.23E-05

1. 1.57E-05 1.79E-06 4.25E-06 1.16E-05 2.60E-05 4.31E-05 1.5 6.07E-06 5.75E-07 1.49E-06 4.43E-06 1.04E-05 1.74E-05

3. 9.86E-07 6.54E-08 1.79E-07 6.45E-07 1.69E-06 3.19E-06

5. 2.08E-07 8.72E-09 2.68E-08 1.20E-07 3.52E-07 7.55E-07 7.5 5.14E-08 1.44E-09 4.77E-09 2.49E-08 8.60E-08 2.04E-07

10. 1.73E-08 4.31E-10 1.32E-09 7.23E-09 2.88E-08 7.45E-08 Table A-id. Mean and Fractile Seismic Hazard Curves for 5 Hz at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 5.26E-02 4.25E-02 4.63E-02 5.27E-02 5.83E-02 6.26E-02 0.001 4.64E-02 3.42E-02 3.90E-02 4.63E-02 5.35E-02 5.75E-02 0.005 2.29E-02 1.32E-02 1.72E-02 2.25E-02 2.88E-02 3.23E-02 0.01 1.33E-02 7.13E-03 9.51E-03 1.31E-02 1.72E-02 2.01E-02 0.015 9.04E-03 4.77E-03 6.26E-03 8.72E-03 1.18E-02 1.42E-02 0.03 4.28E-03 2.01 E-03 2.72E-03 4.07E-03 5.83E-03 7.34E-03 0.05 2.29E-03 8.85E-04 1.27E-03 2.13E-03 3.28E-03 4.37E-03 0.075 1.30E-03 4.07E-04 6.17E-04 1.15E-03 1.95E-03 2.76E-03 0.1 8.23E-04 2.19E-04 3.47E-04 6.93E-04 1.29E-03 1.92E-03 0.15 3.96E-04 8.60E-05 1.44E-04 3.05E-04 6.26E-04 1.04E-03 0.3 9.11E-05 1.49E-05 2.80E-05 6.45E-05 1.42E-04 2.60E-04 0.5 2.74E-05 3.63E-06 7.66E-06 1.95E-05 4.37E-05 7.77E-05 0.75 1.01E-05 1.13E-06 2.57E-06 7.23E-06 1.67E-05 2.88E-05

1. 4.91E-06 4.70E-07 1.13E-06 3.47E-06 8.23E-06 1.44E-05 1.5 1.69E-06 1.25E-07 3.28E-07 1.11E-06 2.88E-06 5.27E-06

3. 2.25E-07 8.47E-09 2.68E-08 1.21E-07 3.84E-07 8.12E-07

5. 4.06E-08 8.47E-10 3.01E-09 1.69E-08 6.83E-08 1.62E-07 7.5 8.86E-09 2.01 E-10 4.90E-10 2.80E-09 1.40E-08 3.84E-08

10. 2.74E-09 1.42E-10 1.95E-10 7.66E-10 4.07E-09 1.23E-08

Document Control Desk CR-1 2-01097 RC-14-0182 Attachment II Page 4 of 5Tab le A-le Mp~n ~ind Frnr~tiIe Sei~mk~ H~z~rd CLJrve~ for 2 5 Hz ~t Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 5.04E-02 3.95E-02 4.37E-02 5.05E-02 5.66E-02 6.09E-02 0.001 4.23E-02 2.96E-02 3.42E-02 4.25E-02 5.05E-02 5.42E-02 0.005 1.71E-02 9.65E-03 1.23E-02 1.67E-02 2.19E-02 2.53E-02 0.01 9.03E-03 4.70E-03 6.17E-03 8.72E-03 1.18E-02 1.44E-02 0.015 5.82E-03 2.80E-03 3.79E-03 5.50E-03 7.77E-03 9.79E-03 0.03 2.50E-03 9.37E-04 1.38E-03 2.32E-03 3.57E-03 4.70E-03 0.05 1.22E-03 3.42E-04 5.50E-04 1.07E-03 1.87E-03 2.64E-03 0.075 6.24E-04 1.38E-04 2.32E-04 4.90E-04 1.01 E-03 1.57E-03 0.1 3.63E-04 6.73E-05 1.18E-04 2.64E-04 5.91E-04 1.02E-03 0.15 1.54E-04 2.22E-05 4.13E-05 9.79E-05 2.49E-04 4.77E-04 0.3 2.83E-05 2.76E-06 5.75E-06 1.57E-05 4.43E-05 9.11E-05 0.5 7.24E-06 5.12E-07 1.23E-06 3.95E-06 1.16E-05 2.29E-05 0.75 2.39E-06 1.21E-07 3.37E-07 1.31E-06 4.01E-06 8.00E-06

1. 1.08E-06 4.01 E-08 1.27E-07 5.58E-07 1.84E-06 3.84E-06 1.5 3.40E-07 7.66E-09 2.84E-08 1.55E-07 6.OOE-07 1.32E-06

3. 3.92E-08 3.84E-10 1.46E-09 1.15E-08 6.45E-08 1.69E-07

5. 6.33E-09 1.53E-10 2.19E-10 1.27E-09 9.37E-09 2.92E-08 7.5 1.25E-09 1.01E-10 1.49E-10 2.57E-10 1.60E-09 5.83E-09

10. 3.61E-10 9.11E-11 1.02E-10 1.55E-10 4.90E-10 1.67E-09 Table A-if. Mean and Fractile Seismic Hazard Curves for 1 Hz at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 3.54E-02 2.07E-02 2.64E-02 3.57E-02 4.37E-02 4.83E-02 0.001 2.45E-02 1.31E-02 1.74E-02 2.46E-02 3.09E-02 3.57E-02 0.005 7.42E-03 3.28E-03 4.63E-03 7.03E-03 1.01 E-02 1.27E-02 0.01 3.88E-03 1.31 E-03 2.04E-03 3.52E-03 5.75E-03 7.55E-03 0.015 2.42E-03 6.54E-04 1.11E-03 2.13E-03 3.68E-03 5.12E-03 0.03 8.52E-04 1.46E-04 2.88E-04 6.73E-04 1.38E-03 2.16E-03 0.05 3.18E-04 3.84E-05 8.12E-05 2.16E-04 5.50E-04 9.37E-04 0.075 1.27E-04 1.18E-05 2.57E-05 7.45E-05 2.19E-04 4.13E-04 0.1 6.21 E-05 4.83E-06 1.08E-05 3.28E-05 1.05E-04 2.13E-04 0.15 2.08E-05 1.29E-06 3.01E-06 9.79E-06 3.47E-05 7.55E-05 0.3 2.89E-06 1.04E-07 2.96E-07 1.18E-06 4.77E-06 1.11E-05 0.5 7.05E-07 1.29E-08 4.56E-08 2.42E-07 1.15E-06 3.05E-06 0.75 2.37E-07 2.04E-09 8.98E-09 6.36E-08 3.68E-07 1.1OE-06

1. 1.08E-07 5.83E-10 2.68E-09 2.25E-08 1.57E-07 5.12E-07 1.5 3.39E-08 1.79E-10 5.05E-10 4.70E-09 4.19E-08 1.62E-07

3. 3.67E-09 1.01E-10 1.53E-10 3.19E-10 3.23E-09 1.69E-08

5. 5.63E-10 9.11E-11 1.01E-10 1.53E-10 4.56E-10 2.46E-09 7.5 1.08E-10 9.11E-11 1.01E-10 1.53E-10 1.69E-10 4.98E-10

10. 3.05E-11 9.11E-11 9.37E-11 1.53E-10 1.53E-10 2.16E-10

Document Control Desk CR-1 2-01097 RC-14-0182 Attachment II Page 5 of 5 Table A-lg. Mean and Fractile Seismic Hazard Curves for 0.5 Hz at Summer AMPS(g) MEAN 0.05 0.16 0.50 0.84 0.95 0.0005 1.93E-02 1.13E-02 1.46E-02 1.87E-02 2.39E-02 2.84E-02 0.001 1.23E-02 6.64E-03 8.72E-03 1.18E-02 1.60E-02 1.95E-02 0.005 3.92E-03 1.13E-03 1.87E-03 3.57E-03 6.OOE-03 7.89E-03 0.01 1.92E-03 3.33E-04 6.45E-04 1.55E-03 3.19E-03 4.70E-03 0.015 1.09E-03 1.32E-04 2.84E-04 8.00E-04 1.87E-03 3.05E-03 0.03 3.11E-04 2.04E-05 4.90E-05 1.74E-04 5.50E-04 1.10E-03 0.05 9.87E-05 4.25E-06 1.07E-05 4.07E-05 1.72E-04 3.84E-04 0.075 3.54E-05 1.11E-06 2.96E-06 1.11E-05 5.66E-05 1.49E-04 0.1 1.63E-05 4.07E-07 1.13E-06 4.43E-06 2.46E-05 7.03E-05 0.15 5.16E-06 9.24E-08 2.76E-07 1.18E-06 7.13E-06 2.32E-05 0.3 7.08E-07 4.77E-09 2.01 E-08 1.23E-07 8.85E-07 3.63E-06 0.5 1.77E-07 4.98E-10 2.49E-09 2.1OE-08 1.92E-07 9.51E-07 0.75 6.05E-08 1.62E-10 4.90E-10 4.70E-09 5.27E-08 3.23E-07

1. 2.80E-08 1.44E-10 2.10E-10 1.49E-09 1.98E-08 1.40E-07 1.5 8.96E-09 1.01E-10 1.53E-10 3.47E-10 4.50E-09 4.19E-08

3. 1.02E-09 9.11E-11 1.01E-10 1.53E-10 3.52E-10 3.90E-09

5. 1.62E-10 9.11E-11 1.0E-10 1.53E-10 1.53E-10 6.OOE-10 7.5 3.22E-11 9.11E-11 9.11E-11 1.53E-10 1.53E-10 2.01E-10

10. 9.34E-12 9.11E-11 9.11E-11 1.53E-10 1.53E-10 1.53E-10