ML14149A074

5/22/14 Meeting Handouts - Meeting with OPPD and NPPD to Discuss Flooding Hazard Reevaluation Extension Requests for Fort Calhoun Station and Cooper Nuclear Station - Response to Question 1 Part 2

ML14149A074
Person / Time
Site:	Cooper, Fort Calhoun
Issue date:	05/30/2014
From:	Nebraska Public Power District (NPPD), Omaha Public Power District
To:	Office of Nuclear Reactor Regulation
Sebrosky J
Shared Package
ML14149A068	List: ML14149A074 ML14149A085 ML14149A088 ML14149A090
References
Download: ML14149A074 (1)

Text

Questions from NRC Staff with Responses Q1 Part 2:

HEC-RAS modeling was performed by USACE. Why model this reach again? How do you expect the results to change and why?

R1 Part 2:

A HEC-RAS model of the Missouri River was developed p from below Gavins Point to below CNS

• to route the PMF to the NPPs

• to route the failure of potentially critical dams using multiple hypothetical d

dams to d determine iff these h d dams are noncritical lddams and d are exempt ffrom detailed analyses

• to carry forward the cumulative effect of the noncritical dams by routing USACE dam failure hydrographs and the dam failure hydrographs for the noncritical dams to the NPP sites in accordance with the ISG We are currently running these calculations and do not have results.

6/4/2014 14