ML16049A542

Surry - Tables 1 and 2

ML16049A542
Person / Time
Site:	Surry
Issue date:	03/01/2016
From:	Willingham M NRC/NRO/DSEA/RHMB
To:
Willingham M
References
Download: ML16049A542 (3)

Text

SurryPowerStation,Units1&2Table 1. Current Design Basis Flood Hazards for Use in the MSAMechanismStillwater Elevation Waves/ RunupReferenceDesign Basis Hazard ElevationLocal Intense PrecipitationNot included in DBNot included in DBNot included in DBFHRR Table 3.0-1Failure of Dams and Onsite Water Control/Storage StructuresNo Impact on the Site Identified No Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 3.0-1Streams and RiversNo Impact on the Site Identified No Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 3.0-1Storm SurgePMH Flooding West Side 22.7 MSL1.3 ft24.0 MSLFHRR Section 3.9PMH Flooding East Side 22.7 MSL5.9 ft28.6 MSLFHRR Section 3.9 SeicheNo Impact on the Site Identified No Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 3.0-1 TsunamiNo Impact on the Site Identified No Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 3.0-1Ice-Induced FloodingNot included in DBNot included in DBNot included in DBFHRR Table 3.0-1 SurryPowerStation,Units1&2Table 1. Current Design Basis Flood Hazards for Use in the MSAMechanismStillwater Elevation Waves/ RunupReferenceDesign Basis Hazard ElevationNote 1: Reported values are rounded to the nearest one-tenth of a foot.Channel Migrations/DiversionsNot included in DBNot included in DBNot included in DBFHRR Table 3.0-1 SurryPowerStation,Units1&2Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSAMechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceNote 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this tableNote 3: Reported values are rounded to the nearest one-tenth of a foot.Local Intense Precipitation 29.4 MSLMinimal29.4 MSLFHRR Table 3.0-1 and Section 2.1.4Site-specific PMPFailure of Dams and Onsite Water Control/Storage StructuresStorm Surge 24.2 MSL14.6 ft38.8 MSLFHRR Section 2.9-7Deterministic PMSS with James River 25-year Flood, East Side of Plant, Low Level Intake Structure 24.2 MSL24.2 MSLFHRR Table 2.9-4, FHRR Section 2.9.2.2, and FHRR Section 2.9.1.1Deterministic PMSS with James River 25-year Flood, West Side of PlantNote 1: The licensee is expected to develop flood event duration parameters and applicable flood associated effects to conduct the MSA. The staff will evaluate the flood event duration parameters (including warning time and period of inundation) and flood associated effects during its review of the MSA.Note 4: Onsite Structure Failure flood causing mechanism elevations are reported as the highest elevations at specific door locations; it appears from the FHRR that the licensee may intend to specify a different flood elevation for each door, based on model output.Minimal SurryPowerStation,Units1&2Table 1. Current Design Basis Flood Hazards for Use in the MSAMechanismStillwater Elevation Waves/ RunupReferenceDesign Basis Hazard ElevationLocal Intense PrecipitationNot included in DBNot included in DBNot included in DBFHRR Table 3.0-1Failure of Dams and Onsite Water Control/Storage StructuresNo Impact on the Site Identified No Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 3.0-1Streams and RiversNo Impact on the Site Identified No Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 3.0-1Storm SurgePMH Flooding West Side 22.7 MSL1.3 ft24.0 MSLFHRR Section 3.9PMH Flooding East Side 22.7 MSL5.9 ft28.6 MSLFHRR Section 3.9 SeicheNo Impact on the Site Identified No Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 3.0-1 TsunamiNo Impact on the Site Identified No Impact on the Site IdentifiedNo Impact on the Site IdentifiedFHRR Table 3.0-1Ice-Induced FloodingNot included in DBNot included in DBNot included in DBFHRR Table 3.0-1 SurryPowerStation,Units1&2Table 1. Current Design Basis Flood Hazards for Use in the MSAMechanismStillwater Elevation Waves/ RunupReferenceDesign Basis Hazard ElevationNote 1: Reported values are rounded to the nearest one-tenth of a foot.Channel Migrations/DiversionsNot included in DBNot included in DBNot included in DBFHRR Table 3.0-1 SurryPowerStation,Units1&2Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSAMechanismStillwater Elevation Waves/ RunupReevaluated Hazard Elevation ReferenceNote 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this tableNote 3: Reported values are rounded to the nearest one-tenth of a foot.Local Intense Precipitation 29.4 MSLMinimal29.4 MSLFHRR Table 3.0-1 and Section 2.1.4Site-specific PMPFailure of Dams and Onsite Water Control/Storage StructuresStorm Surge 24.2 MSL14.6 ft38.8 MSLFHRR Section 2.9-7Deterministic PMSS with James River 25-year Flood, East Side of Plant, Low Level Intake Structure 24.2 MSL24.2 MSLFHRR Table 2.9-4, FHRR Section 2.9.2.2, and FHRR Section 2.9.1.1Deterministic PMSS with James River 25-year Flood, West Side of PlantNote 1: The licensee is expected to develop flood event duration parameters and applicable flood associated effects to conduct the MSA. The staff will evaluate the flood event duration parameters (including warning time and period of inundation) and flood associated effects during its review of the MSA.Note 4: Onsite Structure Failure flood causing mechanism elevations are reported as the highest elevations at specific door locations; it appears from the FHRR that the licensee may intend to specify a different flood elevation for each door, based on model output.Minimal