ML21172A131

Pre-Submittal Meeting Alternate Source Term and TSTF-490

ML21172A131
Person / Time
Site:	Vogtle
Issue date:	07/01/2021
From:	John Lamb Plant Licensing Branch II
To:	Gayheart C Southern Nuclear Operating Co
Lamb J, 415-3100
Shared Package
ML21172A143	List: ML21172A131
References
Download: ML21172A131 (8)

Text

Vogtle Pre-Submittal Meeting Alternate Source Term and TSTF-490 July 1, 2021

Overview Purpose Submittal Scope Request for Exception to RG 1.183 R0 LHGR Limit Recent Industry Submittals Used to Inform VEGP AST Project Project Schedule and Key Staff Interactions Questions/Comments/Discussion 2

Purpose Purpose - The purpose of this pre-submittal meeting is to communicate to the staff Southern Nuclear Companys (SNC) intent to submit for approval, implementation of the Alternative Source Term Methodology (RG - 1.183 R0).

In addition, due to the strong synergies that exist between RG-1.183 R0 implementation and TSTF-490 Deletion of E Bar Definition and Revision to RCS Specific Activity Tech Spec SNC will also be requesting approval for implementation of TSTF-490 R0.

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Submittal Scope For AST Implementation SNC will submit for NRC approval associated markups to Technical Specifications (TS) and Bases along with the full compliment of Dose Consequence Analyses specified by RG 1.183 R0 to support peak rod burnups up to () 62 GWD/MTU.

Dose Analyses TS Reason For Impact Large Break Loss-of-Coolant-Accident (LBLOCA) 1.1 - Definitions TSTF-490 Fuel Handling Accident (FHA) 3.4.16 - RCS Specific TSTF-490 Locked Rotor Accident (LRA) Activity Control Rod Ejection (CRE)

Steam Generator Tube Rupture (SGTR)

Main Steamline Break (MSLB) 4

Request for Exception to RG 1.183 R0 LHGR Limit SNC intends to include within the AST submittal a request for an exception to footnote 11 in RG-1.183 R0 for linear heat generation rate LHGR limit of 6.3 kw/ft.

Multiple Utilities have requested and been granted this exception SNC Submittal will follow closely recent NRC approval for Wolf Creek (SER:ML19100A122, RAI1:ML18304A105, RAI2:ML18232A058, RAI3:ML17297A478)

Exception will request 40% of rods in an assembly be allowed to exceed the footnote 11 LHGR limit 5

Recent Industry Submittals Used to Inform VEGP AST Project SNC has consulted the following recent Industry/Licensing OE associated with this submittal Description Adams No. Date Farley AST SER ML17271A265 December 2017 WOLF CREEK AST SER ML19100A122 May 2019 TSTF-490 R0 Traveler ML052630462 September 2005 NRC Confirmation of Acceptability of TSTF-490 R0 ML18256A027 October 2018 Traveler D.C. Cook AST and TSTF-490 SER ML1637A110 December 2016 6

Project Schedule and Key Staff Interactions NRC Project Pre-Submittal 2nd Pre- Submit LAR Approval Start Mtg 1 (7/1/21) Submittal Mtg. (4Q2022) Requested (4Q2023) 7

Questions/Comments/Discussion 8