ML15226A525
| ML15226A525 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 09/03/2015 |
| From: | Hosung Ahn NRC/NRO/DSEA/RHMB |
| To: | |
| Ahn H | |
| Shared Package | |
| ML15230A161 | List: |
| References | |
| TAC MF3623, TAC MF3624 | |
| Download: ML15226A525 (3) | |
Text
McGuire, 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 760.4 ft msl 0.0 ft 760.4 ft msl FHRR Section 1.2.1 Failure of Dams and Onsite Water Control/Storage Structures Upstream Dam Failures (combined event) 762.6 ft msl 5.1 ft 767.7 ft msl FHRR Section 1.2.3 FHRR Section 1.2.3 (Table 1.2.8-1)
Standby Nuclear Service Water Pond (combined event) 746.9 ft msl 1.5 ft 748.4 ft msl FHRR Table 3-1 Standby Nuclear Service Water Pond Dam Downstream (combined event) 727.8 ft msl Not applicable 727.8 ft msl FHRR Table 3-1 Streams and Rivers Reservoir Level at Cowans Ford Dam 767.9 ft msl 5.1 ft 773.0 ft msl FHRR Section 1.2.2 FHRR Section 1.2.8 (Table 1.2.8-1)
Storm Surge Surge in Lake Norman 760.0 ft msl 14.8 ft 774.8 ft msl FHRR Section 1.2.4 Seiche No Impact on the Site Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Section 1.2.4 Tsunami Not included in DB Not included in DB Not included in DB FHRR Section 1.2
McGuire, 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 1: Reported values are rounded to the nearest one-tenth of a foot.
Ice-Induced Flooding Not included in DB Not included in DB Not included in DB FHRR Section 1.2 Channel Migrations/Diversions Not included in DB Not included in DB Not included in DB FHRR Section 1.2 Note 2: The wave hieght value of 5.1 ft for the Streams and Rivers, and Upstream Dam Failures (combined event) is wave setup plus runup.
McGuire, 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 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.
761.1 ft msl Minimal 761.1 ft msl FHRR Section 2.1 Local Intense Precipitation Streams and Rivers 777.9 ft msl Not applicable 777.9 ft msl FHRR Section 2.2 and 2.8 River PMF in Lake Norman Failure of Dams and Onsite Water Control/Storage Structures 778.5 ft msl Not applicable 778.5 ft msl FHRR Section 2.3 and 2.8 Upstream Dam Failures (combined event) 735.9 ft msl 0.9 ft 736.8 ft msl FHRR Tables 2.4.2-1 and 2.4.2-2 Standby Nuclear Service Water Pond Dam Downstream (combined event)
Storm Surge 778.5 ft msl 0.0 ft 778.5 ft msl FHRR Table 3-1 FHRR Section 2.4.1 (Table 2.4.1-1)
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.