ML110420613
| ML110420613 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 01/24/2011 |
| From: | - No Known Affiliation |
| To: | Division of Operating Reactor Licensing |
| References | |
| Download: ML110420613 (9) | |
Text
1 WBN2Public Resource From:
Hamill, Carol L [clhamill@tva.gov]
Sent:
Monday, January 24, 2011 11:37 AM To:
Epperson, Dan; Poole, Justin; Raghavan, Rags; Milano, Patrick; Campbell, Stephen Cc:
Crouch, William D; Boyd, Desiree L; Hamill, Carol L; Stockton, Rickey A
Subject:
- 1-24-11_WBN U2 FSAR Section 2.4 letter--NRC ccs Attachments:
image001.jpg; 1-24-11_WBN U2 FSAR Section 2.4 letter--NRC ccs.pdf Please see attached letter that was sent to the NRC today.
Enclosures 1 and 2 are too large to e-mail; for those of you who receive hard copies through the mail, a CD containing Enclosures 1 and 2 is being mailed to you.
Carol L. Hamill
Licensing/QualityAssurance WBNUnit2Project,EQB1BWBN
4233653177
4233653833 ccllhhaam miillll@
@ttvvaa..ggoovv
Hearing Identifier:
Watts_Bar_2_Operating_LA_Public Email Number:
265 Mail Envelope Properties (25547F570B005144A141ECCA95DA1AB21045AD59)
Subject:
- 1-24-11_WBN U2 FSAR Section 2.4 letter--NRC ccs Sent Date:
1/24/2011 11:36:36 AM Received Date:
1/24/2011 11:37:23 AM From:
Hamill, Carol L Created By:
clhamill@tva.gov Recipients:
"Crouch, William D" <wdcrouch@tva.gov>
Tracking Status: None "Boyd, Desiree L" <dlboyd@tva.gov>
Tracking Status: None "Hamill, Carol L" <clhamill@tva.gov>
Tracking Status: None "Stockton, Rickey A" <rastockton@tva.gov>
Tracking Status: None "Epperson, Dan" <Dan.Epperson@nrc.gov>
Tracking Status: None "Poole, Justin" <Justin.Poole@nrc.gov>
Tracking Status: None "Raghavan, Rags" <Rags.Raghavan@nrc.gov>
Tracking Status: None "Milano, Patrick" <Patrick.Milano@nrc.gov>
Tracking Status: None "Campbell, Stephen" <Stephen.Campbell@nrc.gov>
Tracking Status: None Post Office:
TVACOCXVS2.main.tva.gov Files Size Date & Time MESSAGE 406 1/24/2011 11:37:23 AM image001.jpg 1023 1-24-11_WBN U2 FSAR Section 2.4 letter--NRC ccs.pdf 469033 Options Priority:
Standard Return Notification:
No Reply Requested:
No Sensitivity:
Normal Expiration Date:
Recipients Received:
Page 1 of 1 2/11/2011 file://c:\\EMailCapture\\Watts_Bar_2_Operating_LA_Public\\265\\attch1.jpg
is to be Withheld from Public Disclosure under 10 CFR 2.390.
When Enclosure 1 is removed, this letter is decontrolled.
Tennessee Valley Authority, Post Office Box 2000, Spring City, Tennessee 37381-2000 January 24, 2011 10 CFR 50.4 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Watts Bar Nuclear Plant, Unit 2 Docket No. 50-391
Subject:
WATTS BAR NUCLEAR PLANT (WBN) - UNIT 2 - FINAL SAFETY ANALYSIS REPORT (FSAR), SECTION 2.4, HYDROLOGIC ENGINEERING The purpose of this letter is to provide anticipated changes to FSAR Section 2.4, Hydrologic Engineering. This information is being submitted in advance of FSAR Amendment 103 in order to facilitate NRC review. Enclosure 1 provides these changes to Sections 2.4.4, 2.4.11, and 2.4.14 (indicated by revision bars), along with only the figures that have been either added or replaced. Deleted figures have also been identified. However, one figure provided in contains security-related information identified by the designation, Security-Related Information - Withhold Under 10 CFR 2.390. TVA hereby requests Enclosure 1 be withheld from public disclosure in accordance with the provisions of 10 CFR 2.390. When Enclosure 1 is separated from this submittal, this letter is decontrolled. A Publicly Available Version of the information contained in Enclosure 1 is provided in Enclosure 2.
As a result of the updates to Section 2.4, TVA determined that the revised Probable Maximum Flood (PMF) levels have the potential to impact other sections of the FSAR.
Specifically, TVA is reviewing FSAR Section 3.8, Design of Category 1 Structures, with this potential in mind. This review will be completed on or before February 28, 2011. In addition, as a result of the re-analysis for the PMF and seismic dam failure scenarios for the WBN Unit 2 FSAR submittal, dam stability calculations are being validated. This validation will be completed on or before March 31, 2011. If necessary, any revisions resulting from the above reviews will be provided in a later FSAR amendment.
provides the list of commitments made in this letter.
If you have any questions, please contact Bill Crouch at (423) 365-2004.
U.S. Nuclear Regulatory Commission Page 3 January 24, 2011 bcc (Enclosures):
Stephen Campbell U.S. Nuclear Regulatory Commission MS 08H4A One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2738 Charles Casto, Deputy Regional Administrator for Construction U. S. Nuclear Regulatory Commission Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, Georgia 30303-1257
ENCLOSURE 1 PROPOSED CHANGES TO WBN UNIT 2 FSAR SECTION 2.4, HYDROLOGIC ENGINEERING SECURITY-RELATED INFORMATION - WITHHOLD UNDER 10 CFR 2.390
ENCLOSURE 2 PROPOSED CHANGES TO WBN UNIT 2 FSAR SECTION 2.4, HYDROLOGIC ENGINEERING PUBLICLY AVAILABLE VERSION
ENCLOSURE 3 LIST OF COMMITMENTS
- 1. As a result of the updates to Section 2.4, TVA determined that the revised Probable Maximum Flood (PMF) levels have the potential to impact other sections of the FSAR.
Specifically, TVA is reviewing FSAR Section 3.8, Design of Category 1 Structures, with this potential in mind. This review will be completed on or before February 28, 2011.
- 2. In addition, as a result of the re-analysis for the PMF and seismic dam failure scenarios for the WBN Unit 2 FSAR submittal, dam stability calculations are being validated. This validation will be completed on or before March 31, 2011.
- 3. If necessary, any revisions resulting from the above reviews will be provided in a later FSAR amendment.