ML070740440
| ML070740440 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 03/12/2007 |
| From: | Bailey J, Baron R, Mccarthy J Tennessee Valley Authority |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML070740440 (10) | |
Text
TENNESSEE VALLEY AUTHORITY WATTS BAR 2 Detailed Scoping Estimating and Planning Study (DSEP)
March 12, 2007
Agenda Introduction DSEP Study Regulatory Background DSEP Regulatory Assumptions WBN2 DSEP Study Philosophy Closing J. Bailey J. Bailey J. McCarthy J. McCarthy R. Baron J. Bailey J. Bailey 2
Detailed Scoping Estimating and Planning Study J. Bailey 3
Purpose - Study feasibility of reactivating and completing construction of WBN2 without impact on safe operation of Unit 1 Product - Detailed cost estimate and proposed construction and startup schedule for TVA Board of Directors consideration
- August 2007 review Process - Similar approach used for TVA Board consideration of Browns Ferry Unit 1 Restart Early status of DSEP study Supplemental Environmental Impact Statement (being prepared) addressing impacts associated with construction and WBN2 operation
Detailed Scoping Estimating and Planning Study J. Bailey 4
07/07 08/07 09/07 09/07 07/08 08/07 06/07 04/07 03/07 Draft SEIS Public Meeting Final SEIS Request for Proposals WBN2 Construction TVA Issue 120-day Reactivation Letter TVA Board Briefings TVA Board Mtg Review*
Selected Site Work Begins Full Construction Begins 01/08 Baseline Submittal TVA Board Approve DSEP Federal Register Notice of Intent to Perform SEIS TVA Informs NRC of DSEP 12/07/06 11/14/06 07/28/06
- Remaining dates on timeline assume a TVA Board completion decision following the August meeting Supplemental Environmental Impact Statement Detailed Scoping Estimating and Planning Study Pre-DSEP WBN2 Milestone Schedule DSEP start 01/07
Regulatory Background Application for Construction permits for WBN 1 and 2 requested May 14, 1971 Construction permits for WBN 1 and 2 granted January 23, 1973 Application for Operating Licenses for WBN 1 and 2 docketed October 4, 1976 Operating License Safety Evaluation Report (SER) NUREG 0847 for WBN 1 and 2 issued June 1982 Design for WBN1 and WBN2 assessed based on Standard Review Plan NUREG-0800 dated July 1981 Supplements 1 - 4 to SER issued 1982-1985 J. McCarthy 5
Regulatory Background In September 1985 NRC issued a 10 CFR 50.54 (f) letter for all TVA nuclear plants and requested TVA to specify corrective actions WBN2 work stopped in 1985 -approximately 80% complete TVA submitted the WBN Nuclear Performance Plan in August 1989 covering both WBN units Provided corrective actions needed to ensure the plant is designed and constructed in accordance with applicable regulatory requirements NRC Issued NUREG 1232, Volume 4 in 1989 endorsing the general approach of Nuclear Performance Plan Resolution of issues in licensing SER (NUREG-0847)
Supplements 5 - 20 to SER issued 1990 -1996 J. McCarthy 6
Transition to DSEP October 1995 - FSAR amendment 91 submitted for WBN1 and WBN2 July 14, 2000 - TVA officially deferred WBN2 July 28, 2006 - TVA Board of Directors authorized DSEP study November 14, 2006 - TVA informed NRC of DSEP study December 7, 2006 - Federal Register Notice Of Intent for Supplemental Environmental Impact Statement on Completion of WBN2 December 31, 2010 - Current expiration date for WBN2 Construction permit J. McCarthy 7
DSEP Regulatory Assumptions Complete construction and obtain Operating License under 10 CFR 50
- Update existing WBN2 SER Criteria for resolution of WBN2 construction issues defined by WBN1 resolution
- Clear and efficient path for NRC review of previously resolved and reviewed issues J. McCarthy 8
Unit 2 DSEP Study Philosophy R. Baron 9
Maximize Unit Fidelity
- Utilize WBN1 Design Criteria
- Scope of WBN2 restart project to incorporate:
WBN1 Corrective Action Programs and Solutions WBN1 Upgrades installed since startup WBN1 five-year plan capital projects
- Unit 2 will be operationally the same as Units 1 (Same systems, equipment, operating procedures, Technical Specifications, Updated Final Safety Analysis Report)
Closing Initial WBN2 project focused on:
Detailed cost estimate, proposed construction and startup schedule and assessment of key risks to support TVA Board of Directors consideration If WBN2 completion is approved by TVA Board, construction completion is focused on:
Operating License pursuant to 10 CFR 50 Safe continued operation of WBN1 Ensuring public health and safety Maintaining a consistent, predictable, transparent process for completion No adverse impacts on WBN1 licensing/design basis Demonstrating acceptability of NRC previously reviewed technical issue resolutions 10 J. Bailey