ML080510365

Request for Additional Information for the Review of the Vogtle Electric Generating Plant, Units 1 and 2, License Renewal Application Section 4.2

ML080510365
Person / Time
Site:	Vogtle
Issue date:	02/27/2008
From:	Ashley D NRC/NRR/ADRO/DLR
To:	Tynan T Southern Co, Generation
Ashley, D J, NRR/DLR/RPB1, 415-3191
References
Download: ML080510365 (5)

Text

February 27, 2008 Mr. Tom E. Tynan Vice President - Vogtle Southern Nuclear Operating Company, Inc.

7821 River Road Waynesboro, GA 30830

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE VOGTLE ELECTRIC GENERATING PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION, SECTION 4.2

Dear Mr. Tynan:

By letter dated June 28, 2007, Southern Nuclear Operating Company, Inc., submitted an application pursuant to 10 CFR Part 54, to renew the operating licenses for Vogtle Electric Generating Plant, Units 1 and 2, 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. Further requests for additional information may be issued in the future.

Items in the enclosure were discussed with Chalmer Myer, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me at 301-415-3191 or by e-mail at dja1@nrc.gov.

Sincerely,

/RA/

Donnie J. Ashley, Sr. Project Manager License Renewal Branch A Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-424 and 50-425

Enclosure:

As stated cc w/encl: See next page

ML080510365 OFFICE LA:DLR PM:RPB1:DLR BC:RPB1:DLR NAME SFigueroa DAshley LLund DATE 02/21/08 02/21/08 02/27/08

VOGTLE ELECTRIC GENERATING PLANT (VEGP), UNITS 1 AND 2 LICENSE RENEWAL APPLICATION (LRA)

REQUEST FOR ADDITIONAL INFORMATION (RAI)

The Vessels & Internals Integrity Branch has compared the information provided by the applicant related to the time limited aging analyses of reactor vessels of the Vogtle Nuclear Plant, Units 1 and 2 and the information provided in the licensees measurement uncertainty recapture (MUR) power uprate submittal. The staff has determined that there may be some inconsistencies between the data submitted for the power uprate and the license renewal application.

RAI-4.2.1-04 We have reviewed the information in Table 4.2.1-1 Summary of EOL Beltline Calculated Neutron Fluence Projections on page 4.2-2 of the Application for License Renewal (LRA) and have compared it with the information shown on pages 6-12 and 6-14 of Westinghouse Energy Systems, Report WCAP-16736-P, Revision 1, Vogtle Electric Generating Plant Measurement Uncertainty Recapture Power Uprate Program Licensing Report,@ dated May 2007 (WCAP-16736) and have noted some inconsistencies. Table 4.2.1-1 of the LRA shows a surface fluence of 3.20 x 1019 n/cm2 (E>1.0 MeV) for VEGP, Unit 1 and 3.02 x 1019 n/cm2 (E>1.0 MeV) for VEGP, Unit 2, whereas Table 6.1.2-5 on page 6-12 of WCAP-16736 shows a surface fluence of 3.24 x 1019 n/cm2 (E>1.0 MeV) for VEGP, Unit 1 and Table 6.1.2-7 on page 6-14 of WCAP-16736 shows a surface fluence of 3.06 x 1019 n/cm2 (E>1.0 MeV) for VEGP, Unit 2.

Do the fluences of Table 4.2.1-1 of the LRA which show surface fluences of 3.20 x 1019 n/cm2 (E>1.0 MeV) for VEGP, Unit 1 and 3.02 x 1019 n/cm2 (E>1.0 MeV) for VEGP, Unit 2 include the 1.7% power uprate? If not? Why not? This power uprate should be considered for the license renewal period.

RAI-4.2.1-05 The third paragraph on page 4.2-1 of the LRA, which starts, For VEGP, 56 EFPY, is a appears to address the 1.7% MUR power uprate, however; it is unclear if this paragraph applies to Unit 1, Unit 2, or both units. Please clarify this paragraph as to which unit it applies to and provide data for the MUR power uprate for both units.

RAI-B.3.25 Table 5.3.1-9 of the VEGP-FSAR-5, Rev. 13, dated April 2006, shows an approximate capsule fluence of 2.98 x 1019 n/cm2 (E>1.0 MeV) for Capsule W of VEGP, Unit 2. This fluence value is less than the value shown in Table 6.1.2-7 on page 6-14 of WCAP-16736 which shows a surface fluence of 3.06 x 1019 n/cm2 (E>1.0 MeV) for VEGP, Unit 2. Please clarify this since the license renewal capsule is to be withdrawn at a fluence that is not less than once nor greater than twice the peak EOL fluence of the license renewal term (60 years).

ENCLOSURE

Letter to T. Tynam from D. Ashley, dated February 27, 2008 DISTRIBUTION:

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE VOGTLE ELECTRIC GENERATING PLANT, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION, SECTION 4.2 HARD COPY:

DLR R/F E-MAIL:

PUBLIC SSmith (srs3)

SDuraiswamy RidsNrrDlr RidsNrrDlrRlra RidsNrrDlrRlrb RidsNrrDlrRlrc RidsNrrDlrReba RidsNrrDlrRebb RidsNrrDciCvib RidsNrrDciCpnb RidsNrrDraAfpb RidsNrrDeEmcb RidsNrrDeEeeb RidsNrrDssSrxb RidsNrrDssSbpb RidsNrrDssScvb RidsOgcMailCenter

---

DAshley JPLeous SHernandez BSingal TChandler, RII CJulian, RII GMcCoy, RII

Vogtle Electric Generating Plant, Units 1 and 2 cc:

Mr. Tom E. Tynan Mr. Laurence Bergen Vice President - Vogtle Oglethorpe Power Corporation Vogtle Electric Generating Plant 2100 East Exchange Place 7821 River Road P.O. Box 1349 Waynesboro, GA 30830 Tucker, GA 30085-1349 Mr. N. J. Stringfellow Arthur H. Domby, Esquire Manager, Licensing Troutman Sanders Southern Nuclear Operating Company, Inc. Nations Bank Plaza P.O. Box 1295 600 Peachtree Street, NE Birmingham, AL 35201-1295 Suite 5200 Atlanta, GA 30308-2216 Mr. Jeffrey T. Gasser Executive Vice President Resident Inspector Southern Nuclear Operating Company, Inc. Vogtle Plant P.O. Box 1295 8805 River Road Birmingham, AL 35201-1295 Waynesboro, GA 30830 Mr. Steven M. Jackson Office of the County Commissioner Senior Engineer - Power Supply Burke County Commission Municipal Electric Authority of Georgia Waynesboro, GA 30830 1470 Riveredge Parkway, NW Atlanta, GA 30328-4684 Mr. Stanford M. Blanton, Esq.

Balch & Bingham, LLP Mr. Reece McAlister P.O. Box 306 Executive Secretary Birmingham, AL 35201 Georgia Public Service Commission 244 Washington Street, SW Ms. Monica M. Caston Atlanta, GA 30334 Vice President and General Counsel Southern Nuclear Operating Company, Inc.

Mr. Harold Reheis, Director 40 Inverness Center Parkway Department of Natural Resources P.O. Box 1295 205 Butler Street, SE, Suite 1252 Birmingham, AL 35201-1295 Atlanta, GA 30334 Chalmer R. Myer Attorney General Southern Nuclear Operating Company, Inc.

Law Department 40 Inverness Center Parkway 132 Judicial Building P.O. Box 1295 Atlanta, GA 30334 Birmingham, AL 35201-1295