ML18333A387

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LLC Response to NRC Request for Additional Information No. 110 (Erai No. 8932) on the NuScale Design Certification Application
ML18333A387
Person / Time
Site: NuScale
Issue date: 11/29/2018
From: Rad Z
NuScale
To:
Document Control Desk, Office of New Reactors
References
RAIO-1118-63621
Download: ML18333A387 (160)
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Text

RAIO-1118-63621 November 29, 2018 Docket No.52-048 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738

SUBJECT:

NuScale Power, LLC Response to NRC Request for Additional Information No.

110 (eRAI No. 8932) on the NuScale Design Certification Application

REFERENCE:

U.S. Nuclear Regulatory Commission, "Request for Additional Information No.

110 (eRAI No. 8932)," dated July 30, 2017 The purpose of this letter is to provide the NuScale Power, LLC (NuScale) response to the referenced NRC Request for Additional Information (RAI).

The Enclosure to this letter contains NuScale's response to the following RAI Question from NRC eRAI No. 8932:

  • 03.07.02-5 This completes all responses to eRAI 8932.

This letter and the enclosed response make no new regulatory commitments and no revisions to any existing regulatory commitments.

If you have any questions on this response, please contact Marty Bryan at 541-452-7172 or at mbryan@nuscalepower.com.

Sincerely,

~~

ackary W. Rad Director, Regulatory Affairs NuScale Power, LLC Distribution: Gregory Cranston, NRC, OWFN-8G9A Samuel Lee, NRC, OWFN-8G9A Marieliz Vera, NRC, OWFN-8G9A Enclosure 1: NuScale Response to NRC Request for Additional Information eRAI No. 8932 NuScale Power, LLC 1100 NE Circle Blvd. , Suite 200 Corvalis, Oregon 97330 , Office: 541.360.0500 , Fax: 541.207.3928 www.nuscalepower.com

RAIO-1118-63621 :

NuScale Response to NRC Request for Additional Information eRAI No. 8932 NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvalis, Oregon 97330, Office: 541.360.0500, Fax: 541.207.3928 www.nuscalepower.com

Response to Request for Additional Information Docket No.52-048 eRAI No.: 8932 Date of RAI Issue: 07/30/2017 NRC Question No.: 03.07.02-5 10 CFR 50 Appendix S requires that the safety functions of structures, systems, and components (SSCs) must be assured during and after the vibratory ground motion associated with the Safe Shutdown Earthquake (SSE) through design, testing, or qualification methods.

On Page 3.7-22 of the FSAR, in the fourth paragraph, the applicant states, However due to the size and complexity of these models it is not practical to review transfer functions at all the nodes in the models. The staff views that the applicant may not need to review transfer functions (TFs) at all nodes; however, the staff views that TFs at key locations should be reviewed to ensure the adequacy of the SSI models and methodologies implemented in the seismic analyses. Therefore, the applicant is requested to provide information on TFs (in plots) at selected nodes of the critical sections and other important locations in the RXB and CRB. The plots should be inspected whether spurious spikes in the TFs are present within the frequency range of interest to the SSI analysis; and, if spikes are present, the applicant should discuss their potential effects on computed seismic demands.

NuScale Response:

Transfer functions at several key locations generated from the certified seismic design response spectra (CSDRS) inputs for the cracked, standalone RXB model for Soil Type 7 are grouped by elevation for presentation in Sections 1.1.1 through 1.1.10. The effect of spurious spikes found in a few transfer functions is evaluated in Section 1.1.11 to show that the corresponding ISRS do not have any spurious peaks. Based on the ISRS examinations and nonexistence of any spurious peaks in the ISRS, it is concluded that the spurious spikes have no effect on the ISRS or the RXB design. FSAR Tier 2, Section 3.7.2.1.1.3 has been updated to include a summary of the evaluation of transfer functions.

NuScale Nonproprietary

REACTOR BUILDING 1.1 Transfer Functions at Selected Locations The transfer functions at the selected locations for the CSDRS inputs for the cracked, standalone RXB model embedded in Soil Type 7 are presented herein. The coordinates of the selected locations are provided in Table 1-1. The nodal locations of each floor and the roof are shown first in one figure and then are followed by the figures of the transfer functions of the selected nodes at the floor or the roof. The transfer functions of the selected nodes grouped by elevation are presented in the following sections:

  • Section 1.1.1 presents the transfer functions of the selected nodes at El. 24'-0".
  • Section 1.1.2 presents the transfer functions of the selected nodes at El. 25'-0".
  • Section 1.1.3 presents the transfer functions of the selected nodes at El. 50'-0".
  • Section 1.1.4 presents the transfer functions of the selected nodes at El. 75'-0".
  • Section 1.1.5 presents the transfer functions of the selected nodes at El. 100'-0".
  • Section 1.1.6 presents the transfer functions of the selected nodes at El. 126'-0."
  • Section 1.1.7 presents the transfer functions of the selected nodes at El. 181'-0".
  • Section 1.1.8 presents the transfer functions of the selected nodes at NPM 1 Lug Support
  • Section 1.1.9 presents the transfer functions of the selected nodes at Grid Line 3
  • Section 1.1.10 presents the transfer functions of the selected nodes at the crane support elevation.

NuScale Nonproprietary

Table 1-1. Selected Nodes for RXB Transfer Function Presentation.

No. Node X Y Z Description No. (inch) (inch) (inch) 1 3974 0 -873 120 Southwest Corner at Top of Basemat 2 3996 0 873 120 Northwest Corner at Top of Basemat 3 4741 1872 873 120 Mid-Span of North Exterior Wall on Top of basemat 4 6017 1872 453 132 NPM 1 West Pool Wall at Floor - Northwest Corner 5 6041 2019.5 305.5 132 NPM 1 Floor Node under Module 6 6145 2609.5 305.5 132 NPM 3 Floor Node under Module 7 6329 3672 453 132 NPM 6 East Pool Wall at Floor - Northeast Corner 8 10974 0 873 420 Northwest Corner at El. 50-0 9 12174 3924 88.5 420 Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 50-0 10 16947 0 873 720 Northwest Corner at El. 75-0 11 18123 3924 360 720 Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 75-0 12 22832 0 873 1020 Northwest Corner of Exterior Wall at El 100-0 13 24008 3924 88.5 1020 Mid-Span of East Slab between Grid Lines RX-B and RX-C at El 100-0 14 25509 0 873 1320 Northwest Corner of Exterior Wall at El 125-0 15 25952 2314.5 621 1320 Mid-Span of North Slab at between Grid Lines RX-4 and RX-5 at El 125-0 16 26419 3924 88.5 1320 Mid-Span of East Slab between Grid Lines RX-B and RX-C at El 125-0 17 29967 0 537 1980 Northwest Corner of Roof Slab 18 30350 2019.5 0 1980 Roof Slab between Grid Lines RX-4 and RX-5 19 16257 1918.5 305.5 673.73 NPM 1 - West Lug Support 20 16271 2019.5 406.5 673.73 NPM 1 - North Lug Support NuScale Nonproprietary

21 16287 2120.5 305.5 673.73 NPM 1 - East Lug Support 22 23151 1127 0 1020 SFP/Drydock Wall - Grid Line 3 23 27680 2215 453 1548 Crane Support Elevation 1.1.1 Transfer Functions of Selected Nodes at El. 24'-0" The selected nodes are 3974, 3996, and 4741, as shown in Figure 1-1. The transfer functions (TFs) are shown in Figure 1-2 though Figure 1-10, following the numerical order of the node numbers. For each node, the three TFs are presented in the order of the X, Y, and Z directions.

Figure 1-1. Three Selected Nodes on Top of Basemat El. 24'-0" (Z=120").

NuScale Nonproprietary

Figure 1-2. Cracked RXB XTF for CSDRS Inputs at Node 3974 at Southwest Corner at Top of Basemat at El. 24'-0" (Z=120") for Soil Type 7.

NuScale Nonproprietary

Figure 1-3. Cracked RXB YTF for CSDRS Inputs at Node 3974 at Southwest Corner at Top of Basemat at El. 24'-0" (Z=120") Soil Type 7.

NuScale Nonproprietary

Figure 1-4. Cracked RXB ZTF for CSDRS Inputs at Node 3974 at Southwest Corner at Top of Basemat at El. 24'-0" (Z=120") for Soil Type 7.

NuScale Nonproprietary

Figure 1-5. Cracked RXB XTF for CSDRS Inputs at Node 3996 at Northwest Corner at Top of Basemat at El. 24'-0" (Z=120") for Soil Type 7.

NuScale Nonproprietary

Figure 1-6. Cracked RXB YTF for CSDRS Inputs at Node 3996 at Northwest Corner at Top of Basemat at El. 24'-0" (Z=120") Soil Type 7.

NuScale Nonproprietary

Figure 1-7. Cracked RXB ZTF for CSDRS Inputs at Node 3996 at Northwest Corner at Top of Basemat at El. 24'-0" (Z=120") for Soil Type 7.

NuScale Nonproprietary

Figure 1-8. Cracked RXB XTF for CSDRS Inputs at Node 4741 at Mid-Span of North Exterior Wall at Top of Basemat at El. 24'-0" (Z=120") Soil Type 7.

NuScale Nonproprietary

Figure 1-9. Cracked RXB YTF for CSDRS Inputs at Node 4741 at Mid-Span of North Exterior Wall at Top of Basemat at El. 24'-0" (Z=120") Soil Type 7.

NuScale Nonproprietary

Figure 1-10. Cracked RXB ZTF for CSDRS Inputs at Node 4741 at Mid-Span of North Exterior Wall at Top of Basemat at El. 24'-0" (Z=120") for Soil Type 7.

NuScale Nonproprietary

1.1.2 Transfer Functions of Selected Nodes at El. 25'-0" The selected nodes are 6017, 6041, 6145, and 6329, as shown in Figure 1-11. The transfer functions (TFs) are shown in Figure 1-12 through Figure 1-23, following the numerical order of the node numbers. For each node, the three TFs are presented in the order of the X, Y, and Z directions.

Figure 1-11. Four Selected Nodes on Top of Pool Floor at El. 25'-0" (Z=1320").

NuScale Nonproprietary

Figure 1-12. Cracked RXB XTF for CSDRS Inputs at Node 6017 on RXM 1 West Pool Wall at Floor - Northwest Corner at El. 25'-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

Figure 1-13. Cracked RXB YTF for CSDRS Inputs at Node 6017 on RXM 1 West Pool Wall at Floor - Northwest Corner at El. 25'-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

Figure 1-14. Cracked RXB ZTF for CSDRS Inputs at Node 6017 on RXM 1 West Pool Wall at Floor - Northwest Corner at El. 25'-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

Figure 1-15. Cracked RXB XTF for CSDRS Inputs at Node 6041 at RXM 1 Floor Node under Module at El. 25-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

Figure 1-16. Cracked RXB YTF for CSDRS Inputs at Node 6041 at RXM 1 Floor Node under Module at El. 25-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

Figure 1-17. Cracked RXB ZTF for CSDRS Inputs at Node 6041 at RXM 1 Floor Node under Module at El. 25-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

Figure 1-18. Cracked RXB XTF for CSDRS Inputs at Node 6145 at RXM 3 Floor Node under Module at El. 25'-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

Figure 1-19. Cracked RXB YTF for CSDRS Inputs at Node 6145 at RXM 3 Floor Node under Module at El. 25'-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

Figure 1-20. Cracked RXB ZTF for CSDRS Inputs at Node 6145 at RXM 3 Floor Node under Module at El. 25'-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

Figure 1-21. Cracked RXB XTF for CSDRS Inputs at Node 6329 at RXM 6 East Pool Wall at Floor - Northeast Corner at El. 25'-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

Figure 1-22. Cracked RXB YTF for CSDRS Inputs at Node 6329 at RXM 6 East Pool Wall at Floor - Northeast Corner at El. 25'-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

Figure 1-23. Cracked RXB ZTF for CSDRS Inputs at Node 6329 at RXM 6 East Pool Wall at Floor - Northeast Corner at El. 25'-0" (Z=132") for Soil Type 7.

NuScale Nonproprietary

1.1.3 Transfer Functions of Selected Nodes at El. 50'-0" The selected nodes are 10974 and 12174, as shown in Figure 1-24. The transfer functions (TFs) are shown in Figure 1-25 though Figure 1-30, following the numerical order of the node numbers. For each node, the three TFs are presented in the order of X, Y, and Z directions.

Figure 1-24. Two Selected Nodes at El. 50'-0" (Z=420").

NuScale Nonproprietary

Figure 1-25. Cracked RXB XTF for CSDRS Inputs at Node 10974 at Northwest Corner at El. 50'-0" (Z=420") for Soil Type 7.

NuScale Nonproprietary

Figure 1-26. Cracked RXB YTF for CSDRS Inputs at Node 10974 at Northwest Corner at El. 50'-0" (Z=420") for Soil Type 7.

NuScale Nonproprietary

Figure 1-27. Cracked RXB ZTF for CSDRS Inputs at Node 10974 at Northwest Corner at El. 50'-0" (Z=420") for Soil Type 7.

NuScale Nonproprietary

Figure 1-28. Cracked RXB XTF for CSDRS Inputs at Node 12174 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 50'-0" (Z=420") for Soil Type 7.

NuScale Nonproprietary

Figure 1-29. Cracked RXB YTF for CSDRS Inputs at Node 12174 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 50'-0" (Z=420") for Soil Type 7.

NuScale Nonproprietary

Figure 1-30. Cracked RXB ZTF for CSDRS Inputs at Node 12174 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 50'-0" (Z=420") for Soil Type 7.

NuScale Nonproprietary

1.1.4 Transfer Functions of Selected Nodes at El. 75'-0" The selected nodes are 16947 and 18123, as shown in Figure 1-31. The transfer functions are shown in Figure 1-32 though Figure 1-37, following the numerical order of the node numbers.

For each node, the three TFs are presented in the order of the X, Y, and Z directions.

Figure 1-31. Two Selected Nodes at El. 75'-0" (Z=720").

NuScale Nonproprietary

Figure 1-32. Cracked RXB XTF for CSDRS Inputs at Node 16947 at Northwest Corner at El. 75'-0" (Z=720") for Soil Type 7.

NuScale Nonproprietary

Figure 1-33. Cracked RXB YTF for CSDRS Inputs at Node 16947 at Northwest Corner at El. 75'-0" (Z=720") for Soil Type 7.

NuScale Nonproprietary

Figure 1-34. Cracked RXB ZTF for CSDRS Inputs at Node 16947 at Northwest Corner at El. 75'-0" (Z=720") for Soil Type 7.

NuScale Nonproprietary

Figure 1-35. Cracked RXB XTF for CSDRS Inputs at Node 18123 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 75'-0" (Z=720") for Soil Type 7.

NuScale Nonproprietary

Figure 1-36. Cracked RXB YTF for CSDRS Inputs at Node 18123 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 75'-0" (Z=720") for Soil Type 7.

NuScale Nonproprietary

Figure 1-37. Cracked RXB ZTF for CSDRS Inputs at Node 18123 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 75'-0" (Z=720") for Soil Type 7.

NuScale Nonproprietary

1.1.5 Transfer Functions of Selected Nodes at El. 100'-0" The selected nodes are 22832 and 24008, as shown in Figure 1-38. The transfer functions are shown in Figure 1-39 though Figure 1-44, following the numerical order of the node numbers.

For each node, the three TFs are presented in the order of the X, Y, and Z directions.

Figure 1-38. Two Selected Nodes at El. 100'-0" (Z=1020").

NuScale Nonproprietary

Figure 1-39. Cracked RXB XTF for CSDRS Inputs at Node 22832 at Northwest Corner of Exterior Wall at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 1-40. Cracked RXB YTF for CSDRS Inputs at Node 22832 at Northwest Corner of Exterior Wall at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 1-41. Cracked RXB ZTF for CSDRS Inputs at Node 22832 at Northwest Corner of Exterior Wall at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 1-42. Cracked RXB XTF for CSDRS Inputs at Node 24008 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 1-43. Cracked RXB YTF for CSDRS Inputs at Node 24008 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 1-44. Cracked RXB ZTF for CSDRS Inputs at Node 24008 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

1.1.6 Transfer Functions of Selected Nodes at El. 126'-0" The selected nodes are 25509, 25952, and 26419, as shown in Figure 1-45. The transfer functions are shown in Figure 1-46 though Figure 1-54, following the numerical order of the node numbers. For each node, the three TFs are presented in the order of the X, Y, and Z directions.

Figure 1-45. Three Selected Nodes at El. 126'-0" (Z=1320").

NuScale Nonproprietary

Figure 1-46. Cracked RXB XTF for CSDRS Inputs at Node 25509 at Northwest Corner of Exterior Wall at El. 126'-0" (Z=1320") for Soil Type 7.

NuScale Nonproprietary

Figure 1-47. Cracked RXB YTF for CSDRS Inputs at Node 25509 at Northwest Corner of Exterior Wall at El. 126'-0" (Z=1320") for Soil Type 7.

NuScale Nonproprietary

Figure 1-48. Cracked RXB ZTF for CSDRS Inputs at Node 25509 at Northwest Corner of Exterior Wall at El. 126'-0" (Z=1320") for Soil Type 7.

NuScale Nonproprietary

Figure 1-49. Cracked RXB XTF for CSDRS Inputs at Node 25952 at Mid-Span of North Slab between Grid Lines RX-4 and RX-5 at El. 126'-0" (Z=1320") for Soil Type 7.

NuScale Nonproprietary

Figure 1-50. Cracked RXB YTF for CSDRS Inputs at Node 25952 at Mid-Span of North Slab between Grid Lines RX-4 and RX-5 at El. 126'-0" (Z=1320") for Soil Type 7.

NuScale Nonproprietary

Figure 1-51. Cracked RXB ZTF for CSDRS Inputs at Node 25952 at Mid-Span of North Slab between Grid Lines RX-4 and RX-5 at El. 126'-0" (Z=1320") for Soil Type 7.

NuScale Nonproprietary

Figure 1-52. Cracked RXB XTF for CSDRS Inputs at Node 26419 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 126'-0" (Z=1320") for Soil Type 7.

NuScale Nonproprietary

Figure 1-53. Cracked RXB YTF for CSDRS Inputs at Node 26419 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 126'-0" (Z=1320") for Soil Type 7.

NuScale Nonproprietary

Figure 1-54. Cracked RXB ZTF for CSDRS Inputs at Node 26419 at Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 126'-0" (Z=1320") for Soil Type 7.

NuScale Nonproprietary

1.1.7 Transfer Functions of Selected Nodes at El. 181'-0" The selected nodes are 29967 and 30350 on top of the roof, as shown in Figure 1-55. The transfer functions are shown in Figure 1-56 though Figure 1-61, following the numerical order of the node numbers. For each node, the three TFs are presented in the order of the X, Y, and Z directions.

Figure 1-55. Two Selected Nodes on Roof at El. 181'-0" (Z=1980").

NuScale Nonproprietary

Figure 1-56. Cracked RXB XTF for CSDRS Inputs at Node 29967 at Northwest Corner of Roof Slab at El. 181'-0" (Z=1980") for Soil Type 7.

NuScale Nonproprietary

Figure 1-57. Cracked RXB YTF for CSDRS Inputs at Node 29967 at Northwest Corner of Roof Slab at El. 181'-0" (Z=1980") for Soil Type 7.

NuScale Nonproprietary

Figure 1-58. Cracked RXB ZTF for CSDRS Inputs at Node 29967 at Northwest Corner of Roof Slab at El. 181'-0" (Z=1980") for Soil Type 7.

NuScale Nonproprietary

Figure 1-59. Cracked RXB XTF for CSDRS Inputs at Node 30350 at Roof Slab between Grid Lines RX-4 and RX-5 at El. 181'-0" (Z=1980") for Soil Type 7.

NuScale Nonproprietary

Figure 1-60. Cracked RXB YTF for CSDRS Inputs at Node 30350 at Roof Slab between Grid Lines RX-4 and RX-5 at El. 181'-0" (Z=1980") for Soil Type 7.

NuScale Nonproprietary

Figure 1-61. Cracked RXB ZTF for CSDRS Inputs at Node 30350 at Roof Slab between Grid Lines RX-4 and RX-5 at El. 181'-0" (Z=1980") for Soil Type 7.

NuScale Nonproprietary

1.1.8 Transfer Functions at RXM1 Lug Supports The selected nodes at the RXM1 lug supports are 16257, 16271, and 16287, as shown in Figure 1-62. The transfer functions are shown in Figure 1-63 through Figure 1-65, following the numerical order of the node numbers. At each lug support, only the transfer functions in the restrained direction are provided. For the west and east lugs, only YTF are shown, and for the north lug, only the XTF are shown.

Figure 1-62. Selected Nodes at RXM1 Lug Supports (Z=673.73").

NuScale Nonproprietary

Figure 1-63. Cracked RXB YTF for CSDRS Inputs at Node 16257 at RXM1 West Lug Support (Z=673.73") for Soil Type 7.

NuScale Nonproprietary

Figure 1-64: Cracked RXB XTF for CSDRS Inputs at Node 16271 at RXM1 North Lug Support (Z=673.73") for Soil Type 7.

NuScale Nonproprietary

Figure 1-65. Cracked RXB YTF for CSDRS Inputs at Node 16287 at RXM1 East Lug Support (Z=673.73") for Soil Type 7.

NuScale Nonproprietary

1.1.9 Transfer Functions at Node 23151 at SFP/Drydock Wall - Grid Line 3 & C Node 23151, at the SFP/Drydock wall - Grid Lines 3 & C, is shown in Figure 1-66. The transfer functions (TFs) are shown in Figure 1-67 though Figure 1-69. The three TFs are presented in the order of the X, Y, and Z directions.

Figure 1-66. Node 23151 at SFP/Drydock Wall - Grid Lines 3 & C at El. 100'-0" (Z=1020").

NuScale Nonproprietary

Figure 1-67. Cracked RXB XTF for CSDRS Inputs at Node 23151 at SFP/Drydock Wall - Grid Lines 3 & C at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 1-68. Cracked RXB YTF for CSDRS Inputs at Node 23151 at SFP/Drydock Wall - Grid Lines 3 & C at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 1-69. Cracked RXB ZTF for CSDRS Inputs at Node 23151 at SFP/Drydock Wall - Grid Lines 3 & C at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

1.1.10 Transfer Functions at Node 27680 at Crane Wheel Close to Pool Wall Center Node 27680, at the crane wheel that is close to the pool wall center, is shown in Figure 1-70.

The transfer functions (TFs) are shown in Figure 1-71 through Figure1-73. The three TFs are presented in the order of the X, Y, and Z directions.

Figure 1-70. Node 27680 at Crane Wheel Close Pool Wall Center at El. 144'-0" (Z=1548").

NuScale Nonproprietary

Figure 1-71. Cracked RXB XTF for CSDRS Inputs at Node 27680 at Crane Wheel Close to Pool Wall Center at El. 144'-0" (Z=1548") for Soil Type 7.

NuScale Nonproprietary

Figure 1-72. Cracked RXB YTF for CSDRS Inputs at Node 27680 at Crane Wheel Close to Pool Wall Center at El. 144'-0" (Z=1548") for Soil Type 7.

NuScale Nonproprietary

Figure 1-73. Cracked RXB ZTF for CSDRS Inputs at Node 27680 at Crane Wheel Close to Pool Wall Center at El. 144'-0" (Z=1548") for Soil Type 7.

NuScale Nonproprietary

1.1.11 Discussion on Spurious Spikes in Transfer Functions Among the transfer functions presented in Sections 1.1.1 through 1.1.10, there are a few spurious spikes found. The details of these spurious spikes are provided in Table 1-2.

By examining the individual ISRS due to the three components of the Capitola input, shown in Figure 1-74 through Figure 1-81, at the frequencies of the spurious spikes, it is concluded that these spurious spikes have no effect on the ISRS.

Table 1-2. Spurious Spikes Found in Transfer Function.

Node TF TF Frequency at ISRS Effect on Figure Component Spike Figure ISRS (Hz) 4741 Figure 1-10 ZTF-YINP 7 Figure 1-74 None 6145 Figure 1-19 YTF-XINP 14.5 Figure 1-75 None 18123 Figure 1-35 XTF-ZINP 25.5 Figure 1-76 None 18123 Figure 1-37 ZTF-ZINP 30.5 Figure 1-77 None 25509 Figure 1-47 YTF-XINP 43.5 Figure 1-78 None 29967 Figure 1-56 XTF-YINP 14.5 Figure 1-79 None 29967 Figure 1-57 YTF-XINP 14.5 Figure 1-80 None 30350 Figure 1-61 ZTF-YINP 19.5 Figure 1-81 None NuScale Nonproprietary

Figure 1-74. Cracked RXB Z-ISRS at Node 4741 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-75. Cracked RXB Y-ISRS at Node 6145 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-76. Cracked RXB X-ISRS at Node 18123 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-77. Cracked RXB Z-ISRS at Node 18123 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-78. Cracked RXB Y-ISRS at Node 25509 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-79. Cracked RXB X-ISRS at Node 29967 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-80. Cracked RXB Y-ISRS at Node 29967 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-81. Cracked RXB Z-ISRS at Node 30350 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

1.1.12 Additional ISRS of Individual Response Components Additional ISRS at selected response components due to X, Y, and Z components of the Capitola input are provided in this section. The additional ISRS components are provided in Table 1-3. The ISRS of the selected response components due to the X, Y, and Z components of the Capitola input are shown in Figure 1-82 through Figure 1-95, as provided in the table. The SRSS of the three co-directional ISRS is also shown in each figure.

The transfer functions corresponding to the individual ISRS presented in this section can be found in Section 1.1. The figure numbers of the transfer functions corresponding to the ISRS are also provided in Table 1-3.

Table 1-3. Selected RXB ISRS due to Capitola X-, Y-, and Z-inputs.

Node Response X Y Z TF ISRS Location Description Comp. (in) (in) (in) Figure No. Figure No.

10974 Y 0 873 420 Figure 1-26 Figure 1-82 Northwest Corner at El.

50-0 12174 X, Z 3924 88.5 420 Figure 1-28 Figure 1-83, Mid-Span of East Slab Figure 1-30 Figure 1-84 between Grid Lines RX-B and RX-C at El. 50-0 18123 Z 3924 360 720 Figure 1-37 Figure 1-85 Mid-Span of East Slab between Grid Lines RX-B and RX-C at El. 75-0 22832 X 0 873 1020 Figure 1-39 Figure 1-86 Northwest Corner of Exterior Wall at El 100-0 24008 X, Y 3924 88.5 1020 Figure 1-42 Figure 1-87, Mid-Span of East Slab Figure 1-43 Figure 1-88 between Grid Lines RX-B and RX-C at El 100-0 25509 X, Z 0 873 1320 Figure 1-46 Figure 1-89, Northwest Corner of Figure 1-48 Figure 1-90 Exterior Wall at El 125-0 25952 X, Y 2314.5 621 1320 Figure 1-49 Figure 1-91, Mid-Span of North Slab Figure 1-50 Figure 1-92 at between Grid Lines RX-4 and RX-5 at El 125-0 26419 X, Y 3924 88.5 1320 Figure 1-52 Figure 1-93, Mid-Span of East Slab Figure 1-53 Figure 1-94 between Grid Lines RX-B and RX-C at El 125-0 30350 Y 2019.5 0 1980 Figure 1-60 Figure 1-95 Roof Slab between Grid Lines RX-4 and RX-5 NuScale Nonproprietary

Figure 1-82. Cracked RXB Y-ISRS at Node 10974 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-83. Cracked RXB X-ISRS at Node 12174 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-84. Cracked RXB Z-ISRS at Node 12174 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-85. Cracked RXB Z-ISRS at Node 18123 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-86. Cracked RXB X-ISRS at Node 22832 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-87. Cracked RXB X-ISRS at Node 24008 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-88. Cracked RXB Y-ISRS at Node 24008 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-89. Cracked RXB X-ISRS at Node 25509 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-90. Cracked RXB Z-ISRS at Node 25509 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-91. Cracked RXB X-ISRS at Node 25952 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-92. Cracked RXB Y-ISRS at Node 25952 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-93. Cracked RXB X-ISRS at Node 26419 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-94. Cracked RXB Y-ISRS at Node 26419 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

Figure 1-95. Cracked RXB Y-ISRS at Node 30350 due to X, Y, and Z Inputs of Capitola Excitation for Soil Type 7.

NuScale Nonproprietary

CONTROL BUILDING 2.1 Transfer Functions and ISRS at Selected Locations Transfer functions at selected locations and ISRS of selected response components at some of the selected locations are presented this section. Note that the TF for the CSDRS inputs and ISRS due to the CSDRS-compatible Capitola input presented in this section were calculated for the cracked, standalone CRB model embedded in Soil Type 7.

2.1.1 Transfer Functions at 12 Selected Nodes The coordinates of the selected locations are provided in Table 2-1. The node locations of each floor and the roof are shown first in one figure and then are followed by the figures of the transfer functions of the selected nodes. The figure numbers of the transfer function plots are provided in Table 2-1.

An inspection of the transfer function plots shows that there are no spurious spikes present.

NuScale Nonproprietary

Table 2-1. Selected Nodes for CRB Transfer Functions.

No. Node X Y Z Location TF Plot Description No. (East) (North) (Vert) Figure Figures (in) (in) (in) 1 32345 4500 700 405 Figure 2-1 Figure 2-2 Northwest Corner at Top of Figure 2-3, Basemat at El 50'-0 Figure 2-4 2 32526 4968 -8 405 Figure 2-5, Center of Basemat at El. 50'-

Figure 2-6, 0 Figure 2-7 3 32623 5154 58.5 405 Figure 2-8, Towards Middle of Grid Line Figure 2-9, 3 at Basemat at El 50'-0 Figure 2-10 4 34320 4500 700 570 Figure 2-11 Figure 2-12, Northest Corner at El. 63'-3 Figure 2-13, Figure 2-14 5 34380 4693 -491.5 570 Figure 2-15, Slab Between Grid Line CB-D Figure 2-16, and CB-E at El. 63-3 Figure 2-17 6 35637 4500 700 720 Figure 2-18 Figure 2-19, Northwest Corner at El. 76'-6 Figure 2-20, Figure 2-21 7 35713 4693 -491.5 720 Figure 2-22, Emergency Equipment Room Figure 2-23, Between Grid Lines CB-D Figure 2-24 and CB-E at El. 76'-6 8 38144 4500 700 1020 Figure 2-25 Figure 2-26, Northwest Corner at El. 100'-

Figure 2-27, 0 Figure 2-28 9 38220 4693 -491.5 1020 Figure 2-29, Mid Span of Slab Between Figure 2-30, Grid Lines CB-D and CB-E at Figure 2-31 El. 100'-0 10 39105 4500 700 1260 Figure 2-32 Figure 2-33, Northwest Corner at El. 120'-

Figure 2-34, 0 Figure 2-35 11 39215 4809.6 58.5 1260 Figure 2-36, Mid Span of Slab Between 7 Figure 2-37, Grid Lines CB-B and CB-C at Figure 2-38 El. 120'-0 12 39715 4500 700 1518 Figure 2-39 Figure 2-40, Northwest Corner of Roof at Figure 2-41, El. 140'-0 Figure 2-42 NuScale Nonproprietary

Figure 2-1. Nodes 32345, 32526, and 32623 at Basemat El. 50'-0" (Z=405").

NuScale Nonproprietary

Figure 2-2. Cracked CRB XTF for CSDRS Inputs at Node 32345 at Northwest Corner at Top of Basemat at El. 50'-0" (Z=405") for Soil Type 7.

NuScale Nonproprietary

Figure 2-3. Cracked CRB YTF for CSDRS Inputs at Node 32345 at Northwest Corner at Top of Basemat at El. 50'-0" (Z=405") for Soil Type 7.

NuScale Nonproprietary

Figure 2-4. Cracked CRB ZTF for CSDRS Inputs at Node 32345 at Northwest Corner at Top of Basemat at El. 50'-0" (Z=405") for Soil Type 7.

NuScale Nonproprietary

Figure 2-5. Cracked CRB XTF for CSDRS Inputs at Node 32526 at Center of Basemat at El.

50'-0" (Z=405") for Soil Type 7.

NuScale Nonproprietary

Figure 2-6. Cracked CRB YTF for CSDRS Inputs at Node 32526 at Center of Basemat at El.

50'-0" (Z=405") for Soil Type 7.

NuScale Nonproprietary

Figure 2-7. Cracked CRB ZTF for CSDRS Inputs at Node 32526 at Center of Basemat at El.

50'-0" (Z=405") for Soil Type 7.

NuScale Nonproprietary

Figure 2-8. Cracked CRB XTF for CSDRS Inputs at Node 32623 towards Middle of Grid Line 3 at Basemat at El. 50'-0" (Z=405") for Soil Type 7.

NuScale Nonproprietary

Figure 2-9. Cracked CRB YTF for CSDRS Inputs at Node 32623 towards Middle of Grid Line 3 at Basemat at El. 50'-0" (Z=405") for Soil Type 7.

NuScale Nonproprietary

Figure 2-10. Cracked CRB ZTF for CSDRS Inputs at Node 32623 towards Middle of Grid Line 3 at Basemat at El. 50'-0" (Z=405") for Soil Type 7.

NuScale Nonproprietary

Figure 2-11. Nodes 34320 and 34380 at El. 63'-3" (Z=570").

NuScale Nonproprietary

Figure 2-12. Cracked CRB XTF for CSDRS Inputs at Node 34320 at Northwest Corner at El.

63'-3" (Z=570") for Soil Type 7.

NuScale Nonproprietary

Figure 2-13. Cracked CRB YTF for CSDRS Inputs at Node 34320 at Northwest Corner at El.

63'-3" (Z=570") for Soil Type 7.

NuScale Nonproprietary

Figure 2-14. Cracked CRB ZTF for CSDRS Inputs at Node 34320 at Northwest Corner at El.

63'-3" (Z=570") for Soil Type 7.

NuScale Nonproprietary

Figure 2-15. Cracked CRB XTF for CSDRS Inputs at Node 34380 at Slab between Grid Line CB-D and CB-E at El. 63-3" (Z=570") for Soil Type 7.

NuScale Nonproprietary

Figure 2-16. Cracked CRB YTF for CSDRS Inputs at Node 34380 at Slab between Grid Line CB-D and CB-E at El. 63-3" (Z=570") for Soil Type 7.

NuScale Nonproprietary

Figure 2-17. Cracked CRB ZTF for CSDRS Inputs at Node 34380 at Slab between Grid Line CB-D and CB-E at El. 63-3" (Z=570") for Soil Type 7.

NuScale Nonproprietary

Figure 2-18. Nodes 35637 and 35713 at El. 76'-6" (Z=720").

NuScale Nonproprietary

Figure 2-19. Cracked CRB XTF for CSDRS Inputs at Node 35637 at Northwest Corner at El.

76'-6" (Z=720") for Soil Type 7.

NuScale Nonproprietary

Figure 2-20. Cracked CRB YTF for CSDRS Inputs at Node 35637 at Northwest Corner at El.

76'-6" (Z=720") for Soil Type 7.

NuScale Nonproprietary

Figure 2-21. Cracked CRB ZTF for CSDRS Inputs at Node 35637 at Northwest Corner at El.

76'-6" (Z=720") for Soil Type 7.

NuScale Nonproprietary

Figure 2-22. Cracked CRB XTF for CSDRS Inputs at Node 35713 at Emergency Equipment Room between Grid Lines CB-D and CB-E at El. 76'-6" (Z=720") for Soil Type 7.

NuScale Nonproprietary

Figure 2-23. Cracked CRB YTF for CSDRS Inputs at Node 35713 at Emergency Equipment Room between Grid Lines CB-D and CB-E at El. 76'-6" (Z=720") for Soil Type 7.

NuScale Nonproprietary

Figure 2-24. Cracked CRB ZTF for CSDRS Inputs at Node 35713 at Emergency Equipment Room between Grid Lines CB-D and CB-E at El. 76'-6" (Z=720") for Soil Type 7.

NuScale Nonproprietary

Figure 2-25. Nodes 38144 and 38220 at El. 100'-0" (Z=1020").

NuScale Nonproprietary

Figure 2-26. Cracked CRB XTF for CSDRS Inputs at Node 38144 at Northwest Corner at El.

100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 2-27. Cracked CRB YTF for CSDRS Inputs at Node 38144 at Northwest Corner at El.

100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 2-28. Cracked CRB ZTF for CSDRS Inputs at Node 38144 at Northwest Corner at El.

100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 2-29. Cracked CRB XTF for CSDRS Inputs at Node 38220 at Mid Span of Slab between Grid Lines CB-D and CB-E at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 2-30. Cracked CRB YTF for CSDRS Inputs at Node 38220 at Mid Span of Slab between Grid Lines CB-D and CB-E at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 2-31. Cracked CRB ZTF for CSDRS Inputs at Node 38220 at Mid Span of Slab between Grid Lines CB-D and CB-E at El. 100'-0" (Z=1020") for Soil Type 7.

NuScale Nonproprietary

Figure 2-32. Nodes 39105 and 39215 at El. 120'-0" (Z=1260").

NuScale Nonproprietary

Figure 2-33. Cracked CRB XTF for CSDRS Inputs at Node 39105 at Northwest Corner at El.

120'-0" (Z=1260") for Soil Type 7.

NuScale Nonproprietary

Figure 2-34. Cracked CRB YTF for CSDRS Inputs at Node 39105 at Northwest Corner at El.

120'-0" (Z=1260") for Soil Type 7.

NuScale Nonproprietary

Figure 2-35. Cracked CRB ZTF for CSDRS Inputs at Node 39105 at Northwest Corner at El.

120'-0" (Z=1260") for Soil Type 7.

NuScale Nonproprietary

Figure 2-36. Cracked CRB XTF for CSDRS Inputs at Node 39215 at Mid Span of Slab between Grid Lines CB-B and CB-C at El. 120'-0" (Z=1260") for Soil Type 7.

NuScale Nonproprietary

Figure 2-37. Cracked CRB YTF for CSDRS Inputs at Node 39215 at Mid Span of Slab between Grid Lines CB-B and CB-C at El. 120'-0" (Z=1260") for Soil Type 7.

NuScale Nonproprietary

Figure 2-38 Cracked CRB ZTF for CSDRS Inputs at Node 39215 at Mid Span of Slab between Grid Lines CB-B and CB-C at El. 120'-0" (Z=1260") for Soil Type 7.

NuScale Nonproprietary

Figure 2-39. Node 39715 at Northwest Corner of Roof at El. 140'-0" (Z=1518").

NuScale Nonproprietary

Figure 2-40. Cracked CRB XTF for CSDRS Inputs at Node 39715 at Northwest Corner of Roof at El. 140'-0" (Z=1518") for Soil Type 7.

NuScale Nonproprietary

Figure 2-41. Cracked CRB YTF for CSDRS Inputs at Node 39715 at Northwest Corner of Roof at El. 140'-0" (Z=1518") for Soil Type 7.

NuScale Nonproprietary

Figure 2-42. Cracked CRB ZTF for CSDRS Inputs at Node 39715 at Northwest Corner of Roof at El. 140'-0" (Z=1518") for Soil Type 7.

NuScale Nonproprietary

2.1.2 ISRS Corresponding to Selected Responses at Selected Locations The ISRS due to Capitola input corresponding to some selected response components at 8 selected locations are presented in this section. The ISRS of each selected response component due to three Capitola input components can be compared with the corresponding three transfer functions of the response. The transfer functions for the CSDRS input are presented in Section 2.1.1.

The selected response components for the ISRS presentation are provided in Table 2-2. The figures of the ISRS plots are included in the table. The three individual ISRS due to the X, Y, and Z components of the Capitola seismic input and the SRSS of the three ISRS are shown in each figure.

Table 2-2. Nodes for ISRS of Individual Response Components.

No. Node Respons X Y Z Location ISRS Plot Description No. e (East) (North) (Vert) Figure Figures Comp. (in) (in) (in) 1 34320 Z 4500 700 570 Figure 2-11 Figure 2-43 Northwest Corner at El. 63'-3 2 34380 Z 4693 -491.5 570 Figure 2-44 Slab Between Grid Line CB-D and CB-E at El. 63-3 3 35637 Z 4500 700 720 Figure 2-18 Figure 2-45 Northwest Corner at El. 76'-6 4 35713 X, Y 4693 -491.5 720 Figure 2-46, Emergency Figure 2-47 Equipment Room Between Grid Lines CB-D and CB-E at El.

76'-6 5 38144 X, Y, Z 4500 700 1020 Figure 2-25 Figure 2-48, Northwest Corner at Figure 2-49, El. 100'-0 Figure 2-50 6 38220 Y 4693 -491.5 1020 Figure 2-51 Mid Span of Slab Between Grid Lines CB-D and CB-E at El.

100'-0 7 39105 X, Z 4500 700 1260 Figure 2-32 Figure 2-52, Northwest Corner at Figure 2-53 El. 120'-0 8 39715 Z 4500 700 1518 Figure 2-39 Figure 2-54 Northwest Corner of Roof at El. 140'-0 NuScale Nonproprietary

Figure 2-43. Cracked CRB Z-ISRS due to X, Y, and Z Inputs of Capitola Excitation at Node 34320 at Northwest Corner at El. 63'-3" (Z=570") for Soil Type 7, Standalone Model.

NuScale Nonproprietary

Figure 2-44. Cracked CRB Z-ISRS due to X, Y, and Z Inputs of Capitola Excitation at Node 34380 at Slab between Grid Line CB-D and CB-E at El. 63-3" (Z=570") for Soil Type 7, Standalone Model.

NuScale Nonproprietary

Figure 2-45. Cracked CRB Z-ISRS due to X, Y, and Z Inputs of Capitola Excitations at Node 35637 at Northwest Corner at El. 76'-6" (Z=720") for Soil Type 7, Standalone Model.

NuScale Nonproprietary

Figure 2-46. Cracked CRB X-ISRS due to X, Y, and Z Inputs of Capitola Excitations at Node 35713 at Emergency Equipment Room between Grid Lines CB-D and CB-E at El. 76'-6" (Z=720") for Soil Type 7, Standalone Model.

NuScale Nonproprietary

Figure 2-47. Cracked CRB Y-ISRS due to X, Y, and Z Inputs of Capitola Excitations at Node 35713 at Emergency Equipment Room between Grid Lines CB-D and CB-E at El. 76'-6" (Z=720") for Soil Type 7, Standalone Model.

NuScale Nonproprietary

Figure 2-48. Cracked CRB X-ISRS due to X, Y, and Z Inputs of Capitola Excitation at Node 38144 at Northwest Corner at El. 100'-0" (Z=1020") for Soil Type 7, Standalone Model.

NuScale Nonproprietary

Figure 2-49. Cracked CRB Y-ISRS due to X, Y, and Z Inputs of Capitola Excitation at Node 38144 at Northwest Corner at El. 100'-0" (Z=1020") for Soil Type 7, Standalone Model.

NuScale Nonproprietary

Figure 2-50. Cracked CRB Z-ISRS due to X, Y, and Z Inputs of Capitola Excitation at Node 38144 at Northwest Corner at El. 100'-0" (Z=1020") for Soil Type 7, Standalone Model.

NuScale Nonproprietary

Figure 2-51. Cracked CRB Y-ISRS due to X, Y, and Z Inputs of Capitola Excitation at Node 38220 at Mid Span of Slab between Grid Lines CB-D and CB-E at El. 100'-0" (Z=1020") for Soil Type 7, Standalone Model.

NuScale Nonproprietary

Figure 2-52. Cracked CRB X-ISRS due to X, Y, and Z Inputs of Capitola Excitation at Node 39105 at Northwest Corner at El. 120'-0" (Z=1260") for Soil Type 7, Standalone Model.

NuScale Nonproprietary

Figure 2-53. Cracked CRB Z-ISRS due to X, Y, and Z Inputs of Capitola Excitation at Node 39105 at Northwest Corner at El. 120'-0" (Z=1260") for Soil Type 7, Standalone Model.

NuScale Nonproprietary

Figure 2-54. Cracked CRB Z-ISRS due to X, Y, and Z Inputs of Capitola Excitation at Node 39715 at Northwest Corner of Roof at El. 140'-0" (Z=1518") for Soil Type 7, Standalone Model.

Impact on DCA:

FSAR Tier 2, Section 3.7.2.1.1.3 has been revised as described in the response above and as shown in the markup provided in this response.

NuScale Nonproprietary

NuScale Final Safety Analysis Report Seismic Design The modified subtraction method includes the nodes at the ground surface of the excavated soil as interaction nodes. The MSM approach for the excavated soil can be visualized as the six planes that represent the sides, bottom, and top of the "box" that models the excavated volume. The inclusion of the ground surface nodes as interaction nodes provides significantly improved boundary conditions and improves the excavated soil response accuracy.

RAI 03.07.02-4S2 Within SASSI2010, a further enhancement of the MSM is available; this methodology is called the extended subtraction method. In the ESM, intermediate planes may be defined within the excavated volume. The addition of intermediate planes reduces the amount of interpolation that must be performed within the excavated volume, and further improves the accuracy of the excavated soil response. As additional planes are added, the ESM approaches the DM in both accuracy and computational time. The NuScale buildings are evaluated with an ESM model.

RAI 03.07.02-4S2 Ensuring Accurate Results RAI 03.07.02-4S2, RAI 03.07.02-5 Both the MSM and ESM reduce the potential for the spurious results produced by the subtraction method. The use of intermediate planes in the ESM method make it even less likely than the MSM to produce inaccurate results. When they occur, these errors can be seen in the transfer functions. However, due to the size and complexity of these models, it is not practical to review transfer functions at all the nodes in the models. Therefore, errors are found by questioning unexpected results. During those investigations, transfer functions may be plotted and reviewed. However, no anomalies associated with using the subtraction method have been seen.Transfer functions at several key locations were investigated. Spurious spikes were found in a few transfer functions, which are due to the built-in interpolation functions in the software.

However, the corresponding seismic input at those frequencies were insignificant, therefore, the corresponding in-structure response spectra (ISRS) do not have any spurious peaks. Based on the ISRS examinations and nonexistence of any spurious peaks in the ISRS, it is concluded that the spurious spikes have no effect on the ISRS or the RXB design.

RAI 03.07.02-4S2 The design process for the site-independent RXB and CRB is to consider multiple soil types, two building stiffnesses (for cracked and uncracked concrete), and multiple time histories. This large data set makes it more likely to notice an anomaly, since it is unlikely to occur in all the different combinations used as input.

RAI 03.07.02-4S2 For the CSDRS, the results from five time histories were averaged for each soil type to produce a single set of results for that soil type. These results are then Tier 2 3.7-108 Draft Revision 3

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