ML072740392
| ML072740392 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 08/30/2007 |
| From: | Rowley J NRC/NRR/ADRO/DLR/RLRB |
| To: | Hamer M Entergy Nuclear Operations |
| References | |
| TAC MD2297 | |
| Download: ML072740392 (4) | |
Text
Page 1 of 1 Jonathan Rowley - Cooling tower RAI From:
Jonathan Rowley To:
mhamer@entergy.com Date:
08/30/2007 3:24 PM
Subject:
Cooling tower RAI Attached is the RAI related to the west cooling tower collapse. It is in ADAMS under ML072390352.
file://C:\\temp\\GW} 00003.HTM 09/27/2007
GW)PQqlq-TMP Page I 1 II.............
.TM P.Pa.1.......
Mail Envelope Properties (46D71977.B64 : 12 : 35182)
Subject:
Creation Date From:
Created By:
Cooling tower RAI 08/30/2007 3:24:39 PM Jonathan Rowley JGRA~nrc.gov Recipients entergy.corn PM mhamer (mharner 0centergy.com)
Action Transferred Date & Time 08/30/2007 3:24:55 Post Office Delivered Route entergy.com Files MESSAGE TEXT.htm ML072390352.pdf Options Auto Delete:
I Expiration Date:
Notify Recipients:
Priority:
ReplyRequested:
Return Notification:
Send Notification when Opened Concealed
Subject:
Security:
To Be Delivered:
Status Tracking:
I 3ize U13 12 30064 Date & Time 08/30/2007 3:24:39 PM 08/30/2007 3:21:40 PM No None Y[es Standard No N4o Standard rnmediate Delivered & Opened
I Jo'na~than_ Rowley -ML072_.390352.pdf Page.1i August 29, 2007 Mr. Michael A. Balduzzi Sr. Vice President and COO Entergy Nuclear Operations, Inc.
Regional Operations, NE 440 Hamilton Avenue White Plains, NY 10601
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE VERMONT YANKEE NUCLEAR POWER STATION, LICENSE RENEWAL APPLICAT ION
Dear Mr. Balduzzi:
By letter dated January 25, 2006, Entergy Nuclear Operations, Inc. submitted an application pursuant to 10 CFR Part 54, to renew the operating license for Vermont Yankee Nuclear Power Station, for review by the U.S. Nuclear Regulatory Commission (NRC or the staff). The staff is reviewing the information contained in the license renewal application and has identified, in the enclosure, areas where additional information is needed to complete the review.
This request for additional information was discussed with David Mannai et al, and a mutually agreeable date for the response is within 30 days from the date of this letter. A revised schedule for completion of the Vermont Yankee Nuclear Power Station license renewal application review will be issued upon receipt of a satisfactory response to this request for additional information. If you have any questions, please contact me at 301-415-4053 or e-mail JGR(,)nrc.qov.
Sincerely, IRA/
Jonathan G. Rowley, Project Manager License Renewal Branch B Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-271
Enclosure:
Request for Additional Information cc w/end: See next page
Jonathan Rowley - ML072390352. pdfP Page 7 1 VERMONT YANKEE NUCLEAR POWER STATION LICENSE RENEWAL APPLICATION (LRA)
REQUEST FOR ADDITIONAL INFORMATION (RAI)
RAI 2.4.4-2 Please provide the results of the review performed to determine the impact of the drculating water piping, pipe supports, and west cooling tower cell (2-4) failures on license renewal scoping, screening, and applicable aging management programs. Please indude the following:
A.
A conclusion and basis as to whether the scoping results documented in the LRA, which initially determined that 9 of the 11 west cooling tower cells were not within the scope of license renewal, are still valid.
B.
If found that the west cooling tower cells are within the scope of license renewal. Please provide the following:
- 1.
The potential effect of a circulating water piping, pipe supports, or structural failure of the nonsafety-relate d west cooling tower cells (2-3 through 2-11), which were not included within the scope of license renewal, on safety-relate d systems, structures, and components (in accordance with 10 CFR 54.4(a)(2)). Indude the potential effect of debris entering the deep basin beneath the cooling tower.
I1.
The details of any age related degradation which caused the failure of the circulating water piping, pipe supports, and west cooling tower cell. Indude the results of the piping and pipe supports inspection related to the current failure and any previously performed, and a description of the identified aging mechanism(s).
C.
Any impact on the aging management programs for circulating water piping, pipe supports, or cooling tower cells.
Endosure