ML062570002
| ML062570002 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 07/25/2006 |
| From: | Tennessee Valley Authority |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML062570002 (19) | |
Text
TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT UNITS 2 AND 3 STATUS Atlanta, GA July 25, 2006
Bill Crouch 2
Introduction Welcome to the status meeting for Browns Ferry Units 2 and 3 Purpose
- Review the site status
- Discuss upcoming activities and strategy
- Solicit feedback
Agenda Introduction B. Crouch Performance Indicators B. Aukland Plant Performance T. Elms Unit 3 Cycle 12 Outage Performance B. Aukland Unit 2 Cycle 14 Outage Plans B. Aukland Performance Improvements B. OGrady Three Unit Readiness B. OGrady Open Discussion 3
Bill Crouch
Performance Indicators Bruce Aukland 4
Browns Ferry 2 - Current Performance Summary Data through June 2006
Performance Indicators Bruce Aukland 5
Browns Ferry 3 - Current Performance Summary Data through June 2006
Performance Indicators Bruce Aukland 6
INPO Index - Old Criteria 1st Qtr - CY 2006 0
20 40 60 80 100 BFN 2
BFN 3
Percent INPO Index Top Decile Entry = 100 Top Quartile Entry = 99.81 Median = 97.17 Average = 92.42 Good HISTORICAL INPO INDEX Browns Ferry Units 2 and 3 0
20 40 60 80 100 120 1990.03 1990.09 1991.03 1991.09 1992.03 1992.09 1993.03 1993.09 1994.03 1994.09 1995.03 1995.09 1996.03 1996.09 1997.03 1997.09 1998.03 1998.09 1999.03 1999.09 2000.03 2000.09 2001.03 2001.09 2002.03 2002.09 2003.03 2003.09 2004.03 2004.09 2005.03 2005.09 2006.03 U3 Index Value Index Best Quartile Index Median Index Worst Quartile U2 Index Value
Plant Performance 7
Unit 2 Cycle 14
- Currently operating at 100%
- Online for 60 days Unit 3 Cycle 13
- Currently operating at 100%
- Online for 124 days Tony Elms
Plant Performance Power History Curve - Unit 2 Generation September 2005 through July 2006 Tony Elms 8
0 500 1000 1500 2000 2500 3000 3500 4000 09/01/05 09/15/05 09/29/05 10/13/05 10/27/05 11/10/05 11/24/05 12/08/05 12/22/05 01/05/06 01/19/06 02/02/06 02/16/06 03/02/06 03/16/06 03/30/06 04/13/06 04/27/06 05/11/06 05/25/06 06/08/06 06/22/06 07/06/06 MWt Planned power reduction for feedwater heater repair Planned power reduction for CRD exercise test with Scram time testing and maintenance Planned shutdown to repair main steam relief valve pilots Power reduction for feedwater pump maintenance
Plant Performance Power History Curve - Unit 3 Generation September 2005 through July 2006 9
Tony Elms 500 1000 1500 2000 2500 3000 3500 4000 09/01/05 09/16/05 10/01/05 10/16/05 10/31/05 11/15/05 11/30/05 12/15/05 12/30/05 01/14/06 01/29/06 02/13/06 02/28/06 03/15/06 03/30/06 04/14/06 04/29/06 05/14/06 05/29/06 06/13/06 06/28/06 07/13/06 MWt Planned pow er reduction for maintenance Scram due to low condenser vacuum resulting from a maintenance activity.
Reactor scram due to load rejection from sw itchyard problem Shutdow n plant for recirc pump seal replacement Planned shutdow n for refueling outage
Unit 3 Cycle 12 Outage Performance Duration of 22 days 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br /> Outage Performance Milestones 0 Recordable Accidents 0 Lost Time Accidents 0 Human Performance Events 10 Bruce Aukland All All Equipment Intolerance Items 833 836 Work Order Backlog 1322 909 Maintenance/Modifications Work Orders 689 649 Surveillance Requirements/Instructions 823 822 Preventive Maintenance Work Orders Actual Planned
Unit 2 Cycle 14 Outage Plans 11 Extended Power Uprate Implementation Outage Considerable modifications Maintaining / improving operational margin Condensate System Replace condensate pump impellers and motors Condensate demineralizer 10th vessel addition Replace condensate booster pump and motors Condensate demineralizer control panel digital upgrade Feedwater System Replace reactor feedwater pumps Modify feedwater pump turbines Modify feedwater heaters Main Steam System Modify high pressure turbine, cross around relief valves, and steam seal piping Modify main steam isolation valves internals and actuators Replace moisture separator internals Bruce Aukland
Performance Improvements Brian OGrady 12 The Hardspot
- Flat / declining performance in some areas
- Significant challenges Unit 1 restart activities Extended power uprate on Unit 2 The Performance Improvement Plan
- Achieve measurable results in 90 days
- 7 key focus areas
Performance Improvements Brian OGrady 13 Program Elements
- Safety/human performance
- Reactivity management
- Training
- Corrective action/self-assessment programs
- Chemistry
- Unit 1 restart readiness
- Equipment reliability Management Sponsors Plans Developed and Monitored Communications with TVA Staff on Program
Performance Improvements Brian OGrady 14 Improving Results
- Personnel error rate
- Days between human performance events
- Human performance index
- Management observations of training
- Problem evaluation report initiation rate
- Level D problem evaluation reports - low threshold
- Intolerance to equipment deficiencies index
- Building inleakage
- Reactor coolant system chemistry
- Unit 1 readiness
Performance Improvements Brian OGrady 15 Phase 2
- Teamwork
- Work management
- Extended Power Uprate
- ALARA Continuing To Work
- Equipment reliability
- Reactivity management
- Unit 1 restart / 3-unit operation
Three Unit Readiness Brian OGrady 16 Unit 1 Recovery Transition from Bulk Work / Construction to System Completion Milestone Presently 18 Systems Have Completed System Pre-Operability Checklist Phase I Process Ready for restart testing Manager assigned to each system System pre-operability checklist board meetings Presently 14 Systems Have Completed System Pre-Operability Checklist Phase II Process Maintenance / Surveillance Requirements maintained Plant Ownership Nuclear Performance Program NRC Inspections Complete for Unit 1 16 of 30 completed Integration of Plant Organizations During Recovery Activities Engineering Maintenance Operations Department Readiness Self Assessments
Initial Assessments complete
Eight follow-up assessments planned Staffing for three unit operation
Three Unit Readiness 17 Brian OGrady
Three Unit Readiness Brian OGrady 18
Open Discussion 19