ML16049A542
| 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&2 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Elevation Waves/
Runup Reference Design Basis Hazard Elevation Local Intense Precipitation Not included in DB Not included in DB Not included in DB FHRR Table 3.0-1 Failure of Dams and Onsite Water Control/Storage Structures No Impact on the Site Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Table 3.0-1 Streams and Rivers No Impact on the Site Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Table 3.0-1 Storm Surge PMH Flooding West Side 22.7 MSL 1.3 ft 24.0 MSL FHRR Section 3.9 PMH Flooding East Side 22.7 MSL 5.9 ft 28.6 MSL FHRR Section 3.9 Seiche No Impact on the Site Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Table 3.0-1 Tsunami No Impact on the Site Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Table 3.0-1 Ice-Induced Flooding Not included in DB Not included in DB Not included in DB FHRR Table 3.0-1
SurryPowerStation,Units1&2 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Elevation Waves/
Runup Reference Design Basis Hazard Elevation Note 1: Reported values are rounded to the nearest one-tenth of a foot.
Channel Migrations/Diversions Not included in DB Not included in DB Not included in DB FHRR Table 3.0-1
SurryPowerStation,Units1&2 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Elevation Waves/
Runup Reevaluated Hazard Elevation Reference Note 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this table Note 3: Reported values are rounded to the nearest one-tenth of a foot.
Local Intense Precipitation 29.4 MSL Minimal 29.4 MSL FHRR Table 3.0-1 and Section 2.1.4 Site-specific PMP Failure of Dams and Onsite Water Control/Storage Structures
[Redacted]
[Redacted]
[Redacted]
[Redacted]
Storm Surge 24.2 MSL 14.6 ft 38.8 MSL FHRR Section 2.9-7 Deterministic PMSS with James River 25-year Flood, East Side of Plant, Low Level Intake Structure 24.2 MSL 24.2 MSL FHRR Table 2.9-4, FHRR Section 2.9.2.2, and FHRR Section 2.9.1.1 Deterministic PMSS with James River 25-year Flood, West Side of Plant Note 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.
[Redacted]
Minimal
SurryPowerStation,Units1&2 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Elevation Waves/
Runup Reference Design Basis Hazard Elevation Local Intense Precipitation Not included in DB Not included in DB Not included in DB FHRR Table 3.0-1 Failure of Dams and Onsite Water Control/Storage Structures No Impact on the Site Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Table 3.0-1 Streams and Rivers No Impact on the Site Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Table 3.0-1 Storm Surge PMH Flooding West Side 22.7 MSL 1.3 ft 24.0 MSL FHRR Section 3.9 PMH Flooding East Side 22.7 MSL 5.9 ft 28.6 MSL FHRR Section 3.9 Seiche No Impact on the Site Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Table 3.0-1 Tsunami No Impact on the Site Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Table 3.0-1 Ice-Induced Flooding Not included in DB Not included in DB Not included in DB FHRR Table 3.0-1
SurryPowerStation,Units1&2 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Elevation Waves/
Runup Reference Design Basis Hazard Elevation Note 1: Reported values are rounded to the nearest one-tenth of a foot.
Channel Migrations/Diversions Not included in DB Not included in DB Not included in DB FHRR Table 3.0-1
SurryPowerStation,Units1&2 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Elevation Waves/
Runup Reevaluated Hazard Elevation Reference Note 2: Reevaluated hazard mechanisms bounded by the current design basis (see Table 1) are not included in this table Note 3: Reported values are rounded to the nearest one-tenth of a foot.
Local Intense Precipitation 29.4 MSL Minimal 29.4 MSL FHRR Table 3.0-1 and Section 2.1.4 Site-specific PMP Failure of Dams and Onsite Water Control/Storage Structures
[Redacted]
[Redacted]
[Redacted]
[Redacted]
Storm Surge 24.2 MSL 14.6 ft 38.8 MSL FHRR Section 2.9-7 Deterministic PMSS with James River 25-year Flood, East Side of Plant, Low Level Intake Structure 24.2 MSL 24.2 MSL FHRR Table 2.9-4, FHRR Section 2.9.2.2, and FHRR Section 2.9.1.1 Deterministic PMSS with James River 25-year Flood, West Side of Plant Note 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.
[Redacted]
Minimal