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MONTHYEARML22263A0252022-09-15015 September 2022
Correction of Documentation Error Identified in License Amendment Request to Update Alternative Source Term Dose Consequences Analyses
Project stage: Request
ML22336A1822022-12-27027 December 2022
Virginia Electric and Power Company Correction of Documentation Error Amendment No. 295 Adopt TSTF-490, Revision 0, and Update Alternative Source Term Analyses
Project stage: Other
2022-12-27
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Text
December 27, 2022 Mr. Daniel G. Stoddard Senior Vice President and Chief Nuclear Officer Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711
SUBJECT:
SURRY POWER STATION, UNIT 1 AND 2 - VIRGINIA ELECTRIC AND POWER COMPANY EVALUATION OF NEW INFORMATION REGARDING AMENDMENT NO. 295 ADOPT TSTF-490, REVISION 0, AND UPDATE ALTERNATIVE SOURCE TERM ANALYSES (EPID L-2019-PMP-0039)
Dear Mr. Stoddard:
By letter dated September 15, 2022, Agencywide Documents Access and Management System (ADAMS) Accession No. ML22263A025, Virginia Electric and Power Company (the licensee, Dominion Energy Virginia), identified new information relative to the original submittal of March 2, 2018 (ML18075A021) for license amendment no. 295 (issued on June 12, 2019 ML19028A384). Dominion Energy Virginia stated that this new information provided did not affect the AST dose consequence analysis associated with the license amendments issuance.
Specifically, the new information was associated with the steam generator tube rupture (SGTR) analysis of record as provided in Table 3.4-7, Power Available - Ruptured SG (RSG) Break Flow, ML18075A021. However, the flashed break flow rate data and a start time for the flow rate change included in Table 3.4-7 were subsequently determined to be incorrect. The new information in Table 3.4-7 resulted from copying data tables from an earlier version of the SGTR calculation and not updating all the parameters. Further, even though Table 3.4-7 included other data, the updated AST dose consequences for the SGTR included in Section 3.4.6, SGTR Analysis Results (ML18075A021) submittal were not affected by the new information because the correct parameters were used in the RADTRAD-NAI files that were used to run the power available cases.
NRC Staff reviewed the licensees letter and finds that the new information did not impact the staffs regulatory findings of atmospheric dispersion analysis, nor affect the staffs finding relative to dose consequence associated with amendment 295s issuance.
D. Stoddard If you have any questions, please contact me at (301) 415-5136, or via email at John.Klos@nrc.gov.
Sincerely,
/RA/
John Klos, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-280, 50-281 cc: Listserv
ML22336A182 OFFICE NRR/DORL/LPL2-1/PM NRR/DORL/LPL2-1/LA NRR/DORL/DEX/EHXB/BC NAME JKlos KGoldstein BHayes DATE 12/02/2022 12/05/2022 12/02/2022 OFFICE NRR/DORL/DRA/ARCB/BC NRR/DORL/LPL2-1/(A) BC NRR/DORL/LPL2-1/PM NAME KHsueh EMiller for MMarkley JKlos DATE 11/15/2022 12/27/2022 12/27/2022
