ML15268A298
| ML15268A298 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 10/05/2015 |
| From: | NRC/NRO/DSEA/RHMB |
| To: | |
| Quinn-Willingham L | |
| Shared Package | |
| ML15278A028 | List: |
| References | |
| Download: ML15268A298 (3) | |
Text
Catawba, 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 Unit 1 Side of the Yard 594.7 ft msl Minimal 594.7 ft msl Response to NRC Request for Additional Information Regarding the FHRR, dated July 28, 2015 (ADAMS Accession No. ML15222A535)
Unit 2 Side of the Yard 594.7 ft msl Minimal 594.7 ft msl Response to NRC Request for Additional Information Regarding the FHRR, dated July 28, 2015 (ADAMS Accession No. ML15222A535)
Failure of Dams and Onsite Water Control/Storage Structures Lake Wylie CNS Intake (Combined Effects) 592.4 ft msl 1.5 ft 593.9 ft msl FHRR Table 1.2.8-1 Standby Nuclear Service Water Pond (Combined Effects) 592.4 ft msl 2.2 ft 594.6 ft msl FHRR Table 1.2.8-1 Allison Creek CNS Discharge (Combined Effects) 592.4 ft msl 1.2 ft 593.6 ft msl FHRR Table 1.2.8-1 Streams and Rivers Lake Wylie CNS Intake 581.1 ft msl Not applicable 581.1 ft msl FHRR Section 1.2.2 and Table 3-1 Standby Nuclear Service Water Pond Dam 583.5 ft msl 1.0 ft 584.5 ft msl FHRR Section 1.2.2 Storm Surge Lake Wylie Storm Surge and Seiche 569.4 ft msl 8.4 ft 577.8 ft msl FHRR Section 1.2.4
Catawba, 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.
Seiche No Impact on the Site Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Section 1.2 Tsunami Not included in DB Not included in DB Not included in DB FHRR Section 1.2 Ice-Induced Flooding No Impact on the Site Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Section 1.2 Channel Migrations/Diversions No Impact on the SIte Identified No Impact on the Site Identified No Impact on the Site Identified FHRR Section 1.2
Catawba, 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.
Local Intense Precipitation 595.5 ft msl Minimal 595.5 ft msl FHRR Section 2.1 and Table 3-1 Unit 1 Side of the Yard 595.6 ft msl Minimal 595.6 ft msl FHRR Section 2.1 Unit 2 Side of the Yard Streams and Rivers 590.7 ft msl Not applicable 590.7 ft msl FHRR Section 2.2.2 Lake Wylie CNS Intake 583.0 ft msl 0.8 ft 583.8 ft msl FHRR Section 2.4.1 and Table 2.4.3-1 Standby Nuclear Service Water Pond Dam (LIP)
Failure of Dams and Onsite Water Control/Storage Structures 602.2 ft msl 1.0 ft 603.2 ft msl FHRR Section 2.8.1, Table 3-1, and Table 2.8.1-1 Lake Wylie CNS Intake (Combined Effects) 602.2 ft msl 1.0 ft 603.2 ft msl FHRR Table 2.4.2-1 and Table 3-1 FHRR Table 2.8.1-1 Standby Nuclear Service Water Pond (Combined Effects) 599.8 ft msl Not applicable 599.8 ft msl FHRR Table 2.3.2-4 and Table 3-1 Allison Creek CNS Discharge (Combined Effects)
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.