Letter Sequence Request |
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MONTHYEARML16041A3412016-02-29029 February 2016
Interim Staff Response to Reevaluated Flood Hazards Submitted in Response to 10 CFR 50.54(f) Information Request - Flood-Causing Mechanism Reevaluation
Project stage: Other
ML16049A5422016-03-0101 March 2016
Tables 1 and 2
Project stage: Request
ML16183A0212016-08-12012 August 2016
NRC Report for the Audit of Virginia Electric and Power Company'S Flood Hazard Reevaluation Report Submittal Relating to the Near-Term Task Force Recommendation 2.1-Flooding for Surry Power Station, Units 1 and 2
Project stage: Other
ML16355A1722016-12-20020 December 2016
Storm Surge Technical Evaluation Report Surry Power Station Hazard Reevaluation Review
Project stage: Request
ML16323A1852016-12-21021 December 2016
Staff Assessment of Response to 10 CFR 50.54(f) Information Request - Flood-Causing Mechanism Reevaluation
Project stage: Acceptance Review
2016-02-29
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[Table view] |
Text
SurryPowerStation,Units1&2 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Waves/ Design Basis Reference Elevation Runup Hazard Elevation Local Intense Precipitation Not included Not included Not included FHRR Table 3.0-1 in DB in DB in DB Streams and Rivers No Impact No Impact No Impact FHRR Table 3.0-1 on the Site on the Site on the Site Identified Identified Identified Failure of Dams and Onsite Water Control/Storage Structures No Impact No Impact No Impact FHRR Table 3.0-1 on the Site on the Site on the Site Identified Identified Identified 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 No Impact No Impact FHRR Table 3.0-1 on the Site on the Site on the Site Identified Identified Identified Tsunami No Impact No Impact No Impact FHRR Table 3.0-1 on the Site on the Site on the Site Identified Identified Identified Ice-Induced Flooding Not included Not included Not included FHRR Table 3.0-1 in DB in DB in DB
SurryPowerStation,Units1&2 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Waves/ Design Basis Reference Elevation Runup Hazard Elevation Channel Migrations/Diversions Not included Not included Not included FHRR Table 3.0-1 in DB in DB in DB Note 1: Reported values are rounded to the nearest one-tenth of a foot.
SurryPowerStation,Units1&2 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Local Intense Precipitation Site-specific PMP 29.4 MSL Minimal 29.4 MSL FHRR Table 3.0-1 and Section 2.1.4 Failure of Dams and Onsite Water Control/Storage Structures
[Redacted] [Redacted] [Redacted] [Redacted] [Redacted]
Storm Surge Deterministic PMSS with James 24.2 MSL 14.6 ft 38.8 MSL FHRR Section 2.9-7 River 25-year Flood, East Side of Plant, Low Level Intake Structure Deterministic PMSS with James 24.2 MSL Minimal 24.2 MSL FHRR Table 2.9-4, FHRR Section River 25-year Flood, West Side 2.9.2.2, and FHRR Section 2.9.1.1 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 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.
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.
SurryPowerStation,Units1&2 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Waves/ Design Basis Reference Elevation Runup Hazard Elevation Local Intense Precipitation Not included Not included Not included FHRR Table 3.0-1 in DB in DB in DB Streams and Rivers No Impact No Impact No Impact FHRR Table 3.0-1 on the Site on the Site on the Site Identified Identified Identified Failure of Dams and Onsite Water Control/Storage Structures No Impact No Impact No Impact FHRR Table 3.0-1 on the Site on the Site on the Site Identified Identified Identified 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 No Impact No Impact FHRR Table 3.0-1 on the Site on the Site on the Site Identified Identified Identified Tsunami No Impact No Impact No Impact FHRR Table 3.0-1 on the Site on the Site on the Site Identified Identified Identified Ice-Induced Flooding Not included Not included Not included FHRR Table 3.0-1 in DB in DB in DB
SurryPowerStation,Units1&2 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Waves/ Design Basis Reference Elevation Runup Hazard Elevation Channel Migrations/Diversions Not included Not included Not included FHRR Table 3.0-1 in DB in DB in DB Note 1: Reported values are rounded to the nearest one-tenth of a foot.
SurryPowerStation,Units1&2 Table 2. Reevaluated Flood Hazards for Flood-Causing Mechanisms for Use in the MSA Mechanism Stillwater Waves/ Reevaluated Reference Elevation Runup Hazard Elevation Local Intense Precipitation Site-specific PMP 29.4 MSL Minimal 29.4 MSL FHRR Table 3.0-1 and Section 2.1.4 Failure of Dams and Onsite Water Control/Storage Structures
[Redacted] [Redacted] [Redacted] [Redacted] [Redacted]
Storm Surge Deterministic PMSS with James 24.2 MSL 14.6 ft 38.8 MSL FHRR Section 2.9-7 River 25-year Flood, East Side of Plant, Low Level Intake Structure Deterministic PMSS with James 24.2 MSL Minimal 24.2 MSL FHRR Table 2.9-4, FHRR Section River 25-year Flood, West Side 2.9.2.2, and FHRR Section 2.9.1.1 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 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.
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.
