ML15238B656
| ML15238B656 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 09/03/2015 |
| From: | Breithaupt S, Quinn-Willingham L NRC/NRO/DSEA/RHMB |
| To: | |
| Quinn-Willingham L | |
| Shared Package | |
| ML15240A163 | List: |
| References | |
| TAC MF6032, TAC MF6033 | |
| Download: ML15238B656 (3) | |
Text
Sequoyah, Units 1 & 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 705.7 ft msl Minimal 705.7 ft msl FHRR Section 3.4.1 Failure of Dams and Onsite Water Control/Storage Structures 708.6 ft msl Not applicable 708.6 ft msl FHRR Section 3.4.8.2 Streams and Rivers Diesel Generator Building 722.0 ft msl 1.2 ft 723.2 ft msl FHRR Section 3.4.2 FHRR Section 3.4.8.1 ERCW Pumping Station 722.0 ft msl 4.2 ft 726.2 ft msl FHRR Section 3.4.2 FHRR Sec.tion 3.4.8.1 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
Sequoyah, Units 1 & 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
Sequoyah, Units 1 & 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 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.
Local Intense Precipitation 706.3 ft msl Minimal 706.3 ft msl FHRR Table 11-1
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Streams and Rivers
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