ML030450487
| ML030450487 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 02/10/2003 |
| From: | Tennessee Valley Authority |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML030450487 (19) | |
Text
TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT UNIT 1 RESTART STATUS 4 T>
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TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT UNIT 1 RESTART STATUS NRRfRegion II - Rockville, MD February 10, 2003
Agenda
"* Introduction - John Scalice
"* Background - Ashok Bhatnagar
- Unit 1 Restart Project Objectives - Jon Rupert
"* Unit 1 Restart Organization - Jon Rupert
"* Unit 1 Project Overview and Schedule - Jon Rupert
"* Unit 1 Engineering Activities Status - Joe Valente
"* Impact on Operating Units - Rick Drake
"* Unit 1 Maintenance & Modifications Status - Rick Drake
"* Regulatory Activities Status - Tim Abney
- Corrective Action Program/Self Assessments - Tim Abney
- Nuclear Assurance Oversight - Steve Tanner
- Summary and Conclusion - John Scalice 2
Background
"* All three BFN Units are essentially identical GE BWR4, Mark I Containment reactors
"*Designed and constructed by TVA
"*Units 1, 2, and 3 licensed in 1973, 1974, and 1976 respectively
"* All three BFN units voluntarily shutdown by TVA in March 1985, because of regulatory and management issues
- TVA committed to obtain NRC approval prior to restart of any BFN unit
- TVA submitted the Nuclear Performance Plan, Volume 3, in August 1986. It outlined the steps needed to recover the BFN units and was specifically directed to Unit 2 Ashok Bhatnagar 3
Background
"* TVA executed Unit 2 restart plan, obtained NRC approval, and restarted Unit 2 on May 24, 1991
"* TVA proposed regulatory framework for restart of Units 1 and 3 in July 1991, outlining improvements to the Unit 2 restart plan
"*NRC approved the regulatory framework proposed by TVA in April 1992
"* TVA executed the Unit 3 restart plan, obtained NRC approval, and restarted Unit 3 on November 19, 1995
"* TVA Board of Directors decided on May 16, 2002, to restart Unit I after detailed study and favorable Supplemental Environmental Impact Statement Ashok Bhatnagar 4
Unit 1 Restart Project Objectives
"* Unit Fidelity
- Return Unit 1 to service operationally the same as Units 2 and 3
- Utilize current design criteria
- Utilize existing TVA procedures, programs and processes
"* Project Integration
- Extensive integrated planning and scheduling which incorporated lessons learned from Units 2 and 3
- Touch each component, system, and plant area only once
"* Return Unit 1 in condition to operate safely, efficiently, and reliably Jon Rupert 5
Unit 1 Restart Organization
"* Dedicated resources for Unit 1 restart
"* TVA management team with experience on restart of Units 2 and 3
"* Bechtel is primary engineering contractor, Stone and Webster is primary maintenance and modifications contractor
"* Unit 1 team closely integrated with operating units' team
"* Organizational structure and strong team in place for restart effort Jon Rupert 6
Unit 1 Project Overview and Schedule Work Scope Required for Unit 1 Restart
- Nuclear Performance Plan Special Programs
- Engineering analyses
- Extensive design changes consistent with Units 2/3 restart
- Design changes implemented since Units 2/3 restart
- Future design changes in 5-year BFN Project Plan
- Corrective/Preventive maintenance
- Regulatory issues
- Licensing actions
- Inservice inspections
- Restart testing Jon Rupert 7
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Unit 1 Engineering Activities Status
- Program Activities
- Design Criteria Documents - complete
- Safe Shutdown Analysis - complete
- Operation Mode Calculations - complete
- Generic Letter 89-10 Calculations - complete
- EQ Basis Calculations - complete
- Analytical Limits Calculations - complete
- Drywell Related Baseline Calculations - complete
- Reactor Building Baseline Calculations - in progress
- License Renewal Activities - in progress 9
Joe Valente
Unit 1 Engineering Activities Status
- Design Change Packages
- Approximately 360 design change packages required for restart
- 60 design changes issued
- All design changes for the drywell are issued
- Currently, 70 design changes in progress and on schedule for Reactor Building, Control Bay and Turbine Building, and yard
- Challenges
- Modifications interface
- Material supplier interactions Joe Valente 10
92 Impact on Operating Units 0 Access Control
- Physical access accommodations
- Personnel Identification I j
- Training Unit color codes Unit 1 equipment required for Unit 2/3 operation identification i4j 11 Rick Drake
Impact on Operating Units Work Control Reviews
- Experienced Work Control Personnel in Unit 1
- Work schedules evaluated by operating units' personnel Rick Drake 12
Unit 1 Maintenance & Modifications Status
"* Completed Activities
- Drywell piping removal
- Drywell cable determinations
- Drywell decontamination
"* Near-Term Planned Work
- Asbestos abatement
- Extraction steam piping removal
- Condenser retube preparation
- Modifications inside drywell
"* Challenges
- Human performance
- Industrial safety
- Constructability of designs 13 Rick Drake
Regulatory Activities Status
- Proposed Regulatory Framework for Unit 1 Restart Submitted December 13, 2002
- Licensing Actions
- Relief Requests PD-1 and PD-2 submitted October 25, 2002
- ISI Program update submitted November 8, 2002
- Detailed Schedules being developed for 18 license amendments Tim Abney 14
Corrective Action Program/Self Assessments Corrective Action Program Being Used to Monitor and Improve Quality
- Management Review Committee Subcommittee reviews all Unit 1 Problem Evaluation Reports (PERs)
- Extensive efforts to encourage contractors to write PERs
- Analysis of PER data to identify trends requiring further action Self Assessments Completed
- Drywell Disassembly
- Drywell Structural Steel Design
- Asbestos Abatement
- Contractor Control Tim Abney 15
Corrective Action Program/Self Assessments
- Self Assessments Planned FY 03
- Mechanical Baseline Calculations
- Reactor Water Cleanup Design Change Notice
- Auxiliary Power System Analysis
- Appendix R Analysis
- Engineering Training
- Unit Barrier Separations
- Work Plan/Work Order
- Drywell Steel Modification Implementation
- Materials Process
- Drawing Improvement Program
- Corrective Action Program
- Work Control
- Rad Chem Activities
- Integrated Data base (ITEL)
Findings from PERs and Self Assessments Tim Abney 16
Nuclear Assurance Oversight
"* Nuclear Assurance Staffing
- Quality Control, Quality Programs, and Quality Assessments
- Inspections, Source Surveillances, Assessments, and Evaluation and Analysis
- Experienced Nuclear Assurance staff
"* Assessments
- Routine Observations
+ Drywell preparatory work
+ Program and support activities
- Formal Planned/Scheduled
+ Engineering Walkdown Program (Completed)
+ Vertical Slice of RHR System Design (In-progress)
+ Engineering, Maintenance & Modifications, Support, and Operations
"* Conclusions
- No significant issues identified to date
- Demonstrated ability to self-identify and resolve problems in Corrective Action Program Steve Tanner 17
-1 Summary, and Conclusion John Scalice is