ML15238B667
| ML15238B667 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 09/03/2015 |
| From: | Breithaupt S, Willingham M NRC/NRO/DSEA/RHMB |
| To: | |
| Willingham M | |
| Shared Package | |
| ML15239B287 | List: |
| References | |
| TAC MF5857, TAC MF5858 | |
| Download: ML15238B667 (3) | |
Text
Watts Bar, Unit 1 and 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 728.9 ft MSL Minimal 728.9 ft MSL FHRR Section 3.4.1 Failure of Dams and Onsite Water Control/Storage Structures 731.2 ft MSL Not applicable 731.2 ft MSL FHRR Table 11-1 Streams and Rivers
- 2) Intake Pumping Station 739.2 ft MSL 2.5 ft 741.7 ft MSL FHRR Section 3.4.2 FHRR Section 3.4.8 Storm Surge Not included in DB Not included in DB Not included in DB Seiche Not included in DB Not included in DB Not included in DB Tsunami Not included in DB Not included in DB Not included in DB Ice-Induced Flooding Not included in DB Not included in DB Not included in DB FHRR Section 3.4.4 FHRR Section 3.4.4 FHRR Section 3.4.5 FHRR Section 3.4.6
Watts Bar, Unit 1 and 2 Table 1. Current Design Basis Flood Hazards for Use in the MSA Mechanism Stillwater Elevation Waves/
Runup Reference Design Basis Hazard Elevation Note: 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 Section 3.4.7
Watts Bar, Unit 1 and 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 729.2 ft MSL Minimal 729.2 ft MSL FHRR Table 11-1
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Streams and Rivers
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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.