ML043020521
| ML043020521 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 03/24/2004 |
| From: | Richard Ennis Office of Nuclear Reactor Regulation |
| To: | Lobel R Office of Nuclear Reactor Regulation |
| References | |
| FOIA/PA-2004-0362 | |
| Download: ML043020521 (1) | |
Text
WIc-k-E-n-nIis* Re., R'_e-vised-pDa r-agrapDh Page 1 ;1
Rick Ennis Re: Revised DaraaraDh Pace 1 I From:
Rick Ennis
\\
To:
Richard Lobel /
Date:
3/24/04 1:38PM
Subject:
Re: Revised paragraph thanks
>>> Richard Lobel 03/24/04 01 :38PM >>>
Looks good.
>>> Rick Ennis 03/24/04 01 :35PM >>>
- Rich, Here's the revised paragraph. Let me know i it's okay:
The NRC staff has also considered the impact of credit for containment accident pressure for so-called beyond-DBAs during which the ECCS or the containment heat removal system may be called upon to function. For station blackout, anticipated transients without scram and Appendix R postulated fires, the suppression pool conditions are typically less severe than those for the design-basis LOCA. For these postulated events, no debris would be generated and, therefore, the flow losses are considerably lower for these events than for the design-basis LOCA and the available NPSH consequently greater. Credit for containment accident pressure is sometimes needed for these events, although the design-basis LOCA conditions would be bounding. Credit for containment accident pressure is not needed for shutdown conditions.
- jq