ML042160026
| ML042160026 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 08/11/2004 |
| From: | Richard Ennis NRC/NRR/DLPM/LPD1 |
| To: | Howe A NRC/NRR/DLPM/LPD1 |
| Ennis R, NRR/DLPM, 415-1420 | |
| References | |
| Download: ML042160026 (2) | |
Text
August 11, 2004 MEMORANDUM TO:
Allen G. Howe, Chief, Vermont Yankee Section Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation FROM:
Richard B. Ennis, Senior Project Manager, Vermont Yankee Section Project Directorate I
/RA/
Division of Licensing Project Management Office of Nuclear Reactor Regulation
SUBJECT:
SUMMARY
OF PHONE CALL WITH ENTERGY CONCERNING VERMONT YANKEE STEAM DRYER ANALYSIS On July 7, 2004, a phone call was held between staff in the Office of Nuclear Reactor Regulation (Brian Sheron, Richard Barrett, Tad Marsh, and Cornelius Holden) and Entergy (John McCann and John Dreyfuss) regarding the steam dryer analysis at Vermont Yankee.
The NRC staff discussed its view that, in light of the dryer failures seen at other boiling water reactors that implemented extended power uprates, Vermont Yankee had a significant challenge to convince the staff that the analysis would show that the dryer was capable of proper operation at the new power level. The staff indicated that it may be necessary to not only have instrumentation to detect what is happening in the dryer but it may also be necessary to have a startup plan that slowly raises power in a very controlled manner. Inspection of the dryer may need to be performed that confirms the analytical determinations.
The licensee stated that: (1) the Vermont Yankee steam line flowrate after the proposed power uprate would be approximately the same as the steam line flowrate at Quad Cities prior to their power uprate (i.e., before steam dryer problems encountered at Quad Cities); and (2) other analyses show that the dryer at Vermont Yankee is capable of the uprated conditions. The NRC participants stated that there was a need for Entergy to demonstrate that the analytical model was capable of predicting the performance of the dryer.
Docket No. 50-271
ML042160026 OFFICE PDI-VY/PM PDI-VY/SC PDI/D DLPM/D NAME REnnis AHowe JClifford for CHolden TMarsh DATE 8/5/04 8/5/04 8/5/04 8/6/04