ML16245A763
| ML16245A763 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 09/16/2016 |
| From: | Office of Nuclear Reactor Regulation |
| To: | Northern States Power Company, Minnesota |
| Rivera-Lugo R | |
| References | |
| CAC MF7710, CAC MF7711 | |
| Download: ML16245A763 (2) | |
Text
Prairie Island Nuclear Generating Plant, 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.
Local Intense Precipitation Not included in DB Not included in DB Not included in DB FHRR Sections 1.5, 2.1.3 & Table 4 Failure of Dams and Onsite Water Control/Storage Structures 676.5 ft NGVD29 Not applicable 676.5 ft NGVD29 FHRR Section 1.5.2 & Table 4 Streams and Rivers Mississippi River Probable Maximum Precipitation 703.6 ft NGVD29 3.1 ft 706.7 ft NGVD29 FHRR Section 1.5.1 & Table 4 Storm Surge Not included in DB Not included in DB Not included in DB FHRR Section 1.5 & Table 4 Seiche Not included in DB Not included in DB Not included in DB FHRR Section 1.5 & Table 4 Tsunami Not included in DB Not included in DB Not included in DB FHRR Section 1.5 & Table 4 Ice-Induced Flooding Not included in DB Not included in DB Not included in DB FHRR Section 1.5 & Table 4 Channel Migrations/Diversions Not included in DB Not included in DB Not included in DB FHRR Section 1.5 & Table 4
Prairie Island Nuclear Generating Plant, 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 695.4 ft NGVD29 Minimal 695.4 ft NGVD29 FHRR Section 2.1.2 & Tables 4 and 5 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.