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#REDIRECT [[ET 14-0002, Correction to the Response to a Nuclear Regulatory Commission Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Seismic Aspects of Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ic]]
| number = ML14035A226
| issue date = 01/27/2014
| title = Correction to the Response to a Nuclear Regulatory Commission Request for Information Pursuant to 10 CFR 50.54(f) Regarding the Seismic Aspects of Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi
| author name = Broschak J
| author affiliation = Wolf Creek Nuclear Operating Corp
| addressee name =
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000482
| license number =
| contact person =
| case reference number = ET 14-0002
| document type = Letter
| page count = 9
| project =
| stage = Request
}}
 
=Text=
{{#Wiki_filter:W*o F CREEK    NUCLEAR OPERATING CORPORATION John P. Broschak Vice President Engineering January 27, 2014 ET 14-0002 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555
 
==Reference:==
: 1)  Letter dated March 12, 2012, from E. J. Leeds and M. R. Johnson, USNRC, to M. W. Sunseri, WCNOC, "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 (NTTF) Review of Insights from the Fukushima Dai-ichi Accident"
: 2)  Letter dated February 15, 2013, from D. L. Skeen, USNRC, to J. E.
Pollock, NEI, "Endorsement of EPRI Final Draft Report 1025287,
                              'Seismic Evaluation Guidance"'
: 3)  Electric Power Research Institute Report 1025287, "Seismic Evaluation Guidance: Screening, Prioritization and Implementation Details (SPID) for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic"
: 4)  Letter dated April 9, 2013, from A. R. Pietrangelo, NEI, to D. L. Skeen, USNRC, "Proposed Path Forward for NTTF Recommendation 2.1:
Seismic Reevaluations"
: 5)  Letter dated May 7, 2013, from E. J. Leeds, USNRC, to J. E. Pollock, NEI, "EPRI Final Draft Report XXXXXX, "Seismic Evaluation Guidance: Augmented Approach for the Resolution of Near-Term Task Force Recommendation 2.1: Seismic," as an Acceptable Alternative to the March 12, 2012, Information Request for Seismic Reevaluations"
: 6)  Letter ET 13-0029, dated September 12, :2013, from J. P. Broschak, WCNOC, to USNRC
 
==Subject:==
Docket No. 50-482: Correction to the Response to a Nuclear Regulatory Commission Request for Information Pursuant to 10 CFR 50.54(f)
Regarding the Seismic Aspects of Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident - 1.5 Year Response for CEUS Sites Gentlemen:
This submittal provides a corrected response to a Nuclear Regulatory Commission (NRC) request for information pursuant to 10 CFR 50.54(f) regarding the seismic aspects of recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-P.O. Box 411/ Burlington, KS 66839 / Phone: (620) 364-8831 An Equal Opportunity Employer M/F/HCNET
 
ET 14-0002 Page 2 of 3 ichi Accident. A corrected description of the Safe Shutdown Earthquake (SSE) Control Point is provided on page 1 of the attachment and updated velocity profiles are provided in Figure 1 and Table 1 in the attachment. The geotechnical profile data for Wolf Creek Generating Station (WCGS) is provided in Table 2 in the attachment. Reference 6 provided descriptions of subsurface materials and properties and base case velocity profiles pursuant to Reference 5.
This submittal replaces Reference 6 in its entirety.
On March 12, 2012, the NRC issued Reference 1 to all power reactor licensees and holders of construction permits in active or deferred status. Enclosure 1 of Reference 1 requested each addressee in the Central and Eastern United States (CEUS) to submit a written response consistent with the requested seismic hazard evaluation information (items 1 through 7) within 1.5 years. On February 15, 2013, the NRC issued Reference 2, endorsing the Reference 3 industry guidance for responding to Reference 1. Section 4 of Reference 3 identifies the detailed information to be included in the seismic hazard evaluation submittals.
On April 9, 2013, the Nuclear Energy Institute (NEI) submitted Reference 4 to the NRC, requesting NRC agreement to delay submittal of some of the CEUS seismic hazard evaluation information so that an update to the Electric Power Research Institute (EPRI) (2004, 2006) ground motion attenuation model could be completed and used to develop that information.
NEI proposed that descriptions of subsurface materials and properties and base case velocity profiles (items 3a and 3b in Section 4 of Reference 3) be submitted to NRC by September 12, 2013, with the remaining seismic hazard and screening information submitted to NRC by March 31, 2014. In Reference 5, NRC agreed with this recommendation.
The attachment contains the requested descriptions of subsurface materials and properties and base case velocity profiles for WCGS. The information provided in the attachment to this letter is considered an interim product of seismic hazard development efforts being performed for the industry by EPRI. The complete and final seismic hazard reports for WCGS will be provided to the NRC in our seismic hazard submittals by March 31, 2014 in accordance with Reference 5.
This letter contains no commitments. If you have any questions concerning this matter, please contact me at (620) 364-4085, or Mr. Michael J. Westman at (620) 364-4009.
Sincerely, John P. Broschak JPB/rlt Attachment cc:  M. L. Dapas (NRC), w/a C. F. Lyon (NRC), w/a N. F. O'Keefe (NRC), w/a Senior Resident Inspector (NRC), w/a
 
ET 14-0002 Page 3 of 3 STATE OF KANSAS )
SS COUNTY OF COFFEY )
John P. Broschak, of lawful age, being first duly sworn upon oath says that he is Vice President Engineering of Wolf Creek Nuclear Operating Corporation; that he has read the foregoing document and knows the contents thereof; that he has executed the same for and on behalf of said Corporation with full power and authority to do so; and that the! facts therein stated are true and correct to the best of his knowledge, information and belief.
Jo,. Broschak V'cresident Engineering SUBSCRIBED and sworn to before me this        .2')  day of  .l n-*,    J      ,2014.
[2  GAYLE      S:1EPH-EAF`ýD
      -Nct.ry Put~ic   - Statj cf Kans lzr--ý-'.E;,:--        -1. 7' Expiration Date
 
Attachment to ET 14-0002 Page 1 of 6 Near Term Task Force Recommendation 2.1: Seismic - 1.5 Year Response of Central and Eastern United States (CEUS) Plants On April 9, 2013, the Nuclear Energy Institute (NEI) submitted Reference 1 to the Nuclear Regulatory Commission (NRC), requesting NRC agreement to delay submittal of some of the CEUS seismic hazard evaluation information so that an update to the Electric Power Research Institute (EPRI) (2004, 2006) ground motion attenuation model could be completed and used to develop that information.      NEI proposed that descriptions of subsurface materials and properties and base case velocity profiles (items 3a and 3b in Section 4 of Reference 2) be submitted to NRC by September 12, 2013, with the remaining seismic hazard and screening information submitted to NRC by March 31, 2014. In Reference 3, NRC agreed with this recommendation.
Wolf Creek Generating Station (WCGS) Subsurface Materials and Properties and Base Case Velocity Profiles The basic information used to create the site geologic profile at WCGS is shown in Table 2.
This site geologic profile was developed using information documented in Reference 5. The Safe Shutdown Earthquake (SSE) Control Point is defined to be at the surface at the top of the finished grade at an elevation of 1099.5 feet (335 meters) [Reference 5]. For dynamic properties of soft rock layers, modulus and damping curves were represented with two models.
The first model used rock curves taken from Reference 4, the second model assumed linear behavior. These dynamic property models were weighted equally.
The three base-case shear-wave velocity profiles used to model amplification at WCGS are shown in Figure 1. Profiles 1, 2, and 3 are weighted 0.4, 0.3, and 0.3, respectively.
Thicknesses, depths, and shear-wave velocities (Vs) corresponding to each profile are shown in Table 1.
 
Attachment to ET 14-0002 Page 2 of 6 Fiaure 1 Shear-Wave Velocities (Vs) for WCGS Vs profiles for Wolf Creek Site Vs (ft/sec) 0  1000 2000  3000 4000    5000    6000  7000 8000 9000 10000 0
200-400 600 800 1000                                                                  -Profile 1 1200                                                                  -Profile 2 1400                                                                  -Profile 3 1600 1800 2000                                          __
2200                                                        !
2400 2600 2800
 
Attachment to ET 14-0002 Page 3 of 6 Table I Layer Thicknesses, Depths, and Velocities (Vs) for 3 Profiles Profile I                    Profile 2                      Profile 3 Thick-                        Thick-                        Thick-nesslft)  depth (ft) Vs(ft/s) ness(ft) depth (ft) Vs(ft/s)  ness(ft)    depth (ft) Vs(ft/s) 0        550                  0      350                      0      863 5.0        5.0      550      5.0        5.0    350        5.0          5.0      863 5.0        10.0      550      5.0      10.0    350        5.0          10.0    863 5.0        15.0      1450      5.0      15.0    928        5.0          15.0    2277 5.0        20.0      1450      5.0      20.0    928        5.0        20.0    2277 5.0        25.0      1450      5.0      25.0    928        5.0        25.0    2277 5.0        30.0      1450      5.0      30.0      928        5.0        30.0    2277 6.0        36.0      1450      6.0      36.0      928        6.0          36.0    2277 6.0        42.0      6200      6.0      42.0    3968        6.0        42.0    9285 6.0        48.0      6200      6.0      48.0    3968        6.0        48.0    9285 6.0        54.0      3500      6.0      54.0    2240        6.0          54.0    5495 6.0        60.0      3500      6.0      60.0    2240        6.0        60.0    5495 4.0        64.0      3500      4.0      64.0    2240        4.0        64.0    5495 6.0        70.0      6200      6.0      70.0    3968        6.0          70.0    9285 6.0        76.0      6200      6.0      76.0    3968        6.0          76.0    9285 6.0        82.0      6200      6.0      82.0    3968        6.0          82.0    9285 3.0        85.0      4000      3.0      85.0    2560        3.0          85.0    6280 18.0      103.0    4000      18.0    103.0    2560        18.0        103.0    6280 18.0      121.0    4000      18.0    121.0    2560        18.0        121.0    6280 18.0      139.0    4000      18.0    139.0    2560        18.0        139.0    6280 18.0      157.0    4000      18.0    157.0    2560        18.0        157.0    6280 18.0      175.0    4000      18.0      175.0    2560        18.0        175.0    6280 18.0      193.0    4000      18.0      193.0    2560        18.0        193.0    6280 18.0      211.0    4000      18.0    211.0    2560        18.0        211.0    6280 18.0      229.0    4000      18.0    229.0    2560        18.0        229.0    6280 18.0      247.0    4000      18.0    247.0    2560        18.0        247.0    6280 12.0      259.0    4000      12.0    259.0    2560        12.0        259.0    6280 1.0      260.0    8000      1.0    260.0    5120        1.0        260.0    9285 2.0      262.0    8000      2.0    262.0    5120        2.0        262.0    9285 5.0      267.0    4250      5.0    267.0    2720        5.0        267.0    6672 18.0      285.0    4250      18.0    285.0    2720        18.0        285.0    6672 18.0      303.0    4250      18.0      303.0    2720        18.0        303.0    6672 18.0      321.0    4250      18.0      321.0    2720        18.0        321.0    6672 18.0      339.0    4250      18.0      339.0    2720        18.0        339.0    6672
 
Attachment to ET 14-0002 Page 4 of 6 Profile 1                    Profile 2                    Profile 3 Thick-                          Thick-                      Thick-ness ft)  depth (ft) Vs(ft/s) ness(ft) depth (ft) Vs(ft/s) ness(ft)  depth (ft) Vs(ft/s) 18.0      357.0    4250      18.0    357.0    2720      18.0    357.0    6672 18.0      375.0    4250      18.0    375.0    2720      18.0    375.0    6672 18.0      393.0    4250      18.0    393.0    2720      18.0    393.0    6672 100.0      493.0    8000    100.0    493.0    5120    100.0      493.0    9285 100.1      593.0    8025    100.1    593.0    5136    100.1      593.0    9285 100.1      693.1    8075    100.1    693.1    5168    100.1      693.1    9285 100.1      793.2    8125    100.1    793.2    5200    100.1      793.2    9285 100.1      893.2    8175    100.1    893.2    5232    100.1      893.2    9285 100.1      993.3    8225    100.1    993.3    5264    100.1      993.3    9285 100.1      1093.4    8275      100.1    1093.4    5296    100.1    1093.4    9285 100.1      1193.4    8325      100.1    1193.4    5328    100.1    1193.4    9285 100.1      1293.5    8375      100.1    1293.5    5360    100.1    1293.5    9285 100.1      1393.6    8425      100.1    1393.6    5392    100.1    1393.6    9285 100.1      1493.6    8475      100.1    1493.6    5424      100.1    1493.6    9285 100.1    1593.7    8525      100.1    1593.7    5456      '100.1  1593.7    9285 100.1    1693.8    8575      100.1    1693.8    5488      100.1    1693.8    9285 100.1      1793.8    8625      100.1    1793.8    5520      100.1    1793.8    9285 100.1      1893.9    8675      100.1    1893.9    5552      100.1    1893.9    9285 100.1      1994.0    8725      100.1    1994.0    5584      100.1    1994.0    9285 100.1    2094.0    8775      100.1    2094.0    5616      100.1    2094.0    9285 100.1    2194.1    8825      100.1    2194.1    5648      100.1    2194.1    9285 100.1    2294.2    8875      100.1    2294.2    5680      100.1    2294.2    9285 100.1    2394.2    8925      100.1    2394.2    5712      100.1    2394.2    9285 100.1    2494.3    8975      100.1    2494.3    5744      100.1    2494.3    9285 100.1    2594.4    9025      100.1    2594.4    5776      100.1    2594.4    9285 105.5    2699.8    9075      105.5    2699.8    5808      105.5    2699.8    9285 3280.8      5980.6    9285    3280.8    5980.6    9285    3280.8    5980.6    9285
 
Attachment to ET 14-0002 Page 5 of 6 Table 2 Summary of Geotechnical Profile Data for Wolf Creek Generating Station                      (a)
Measured  Average Shear Wave        Unit      Bulk Depth                                                                      Compressional Wave  Poisson's          Velocity    Weight  Density (feet)          Geologic Unit(s)            Material Description            Velocity (ft/sec)      Ratio          (ft/sec)    (pcf)      (pcf) 0-10          Residual soil and          Silty clay and weathered                    2,300      0.463-        500            99 weathered bedrock          shale                                                  0.475        600            113 10-36        Heumader Member            Somewhat clayey calcareous                6,000        0.467-        1,400-          139 shale                                                  0.471        1,500 36-48        Plattsmouth Member          Dense, Fine-grained                        14,000      0.378        6,200          160      1 6 6 (b) limestone with shale layers                                                          165 3,500""'d 48-64        Heebner, Leavenworth        Interbedded carbonaceous                  7,000        0.333 and Snyderville Members    shale, limestone, and clayey calcareous shale 64-82        Toronto Member              Fossiliferous limestone with              11,700      0.305        6,200          147      165 (b) occasional thin shale layers                                                          153 82-255        Unnamed Lawrence,          Interbedded shale, siltstone              7,800        0.322        4,000          150-154  1 60 (b)
Amazonia, Ireland and      and sandstone; a thin coal Robbins Members            bed and limestone layer occur in the upper 25 feet; pure shale is present in the basal 60 feet 259-262      Haskell Member              Dense, fine-grained                                    0 . 3 0 1 (b) 8 ,0 0 0 (b,c)            16 6 (b) limestone 262-393      Vinland, Tonganoxie and    Interbedded siltstone, shale                                          4 ,2 5 0 (b,d)  148-154  159(b) 0 . 3 3 3 (b)
Weston Members              and sandstone; pure shale is prese nt in the basal 30 feet 393-402      South Bend and Rock        Dense limestone with shale                16,500 (b)    0 . 3 4 6 (b) 8 ,0 0 0 (b,c) 16 6 (b)
Lake Members                and siltstone aDepths and descriptions based on Boring B-4.
b Indicates values obtained from Birdwell Elastic Property Logs, borings B-4, B-5 and B-11.
CShear wave velocity measured by Birdwell.
dShear wave velocity empirically computed by Birdwell.
 
Attachment to ET 14-0002 Page 6 of 6
 
==References:==
: 1. Letter from A. R. Pietrangelo, NEI, to D. L. Skeen, USNRC, "Proposed Path Forward for NTTF Recommendation 2.1: Seismic Reevaluations" April 9, 2013. ADAMS Accession No. ML13107B386.
: 2. Electric Power Research Institute Report 1025287, "Seismic Evaluation Guidance:
Screening, Prioritization and Implementation Details (SPID) for the Resolution of Fukushima Near-Term Task Force Recommendation 2.1: Seismic." ADAMS Accession No. ML12333A170.
: 3. Letter from E. J. Leeds, USNRC, to J. E. Pollock, NEI, "EPRI Final Draft Report XXXXXX, "Seismic Evaluation Guidance: Augmented Approach for the Resolution of Near-Term Task Force Recommendation 2.1: Seismic," as an Acceptable Alternative to the March 12, 2012, Information Request for Seismic Reevaluations," May 7, 2013.
ADAMS Accession No. ML13106A331.
: 4. Electric Power Research Institute Report, TR-102293, Vol. 1 - 5, "Guidelines for DeterminingDesign Basis Ground Motions," 1993.
: 5. Wolf Creek Nuclear Operating Corporation (2013), "Wolf Creek Subsurface Materials,"
an informal report submitted to the Electric Power Research Institute on November 5, 2013.}}

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