ML032830235
| ML032830235 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 10/07/2003 |
| From: | FirstEnergy Nuclear Operating Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML032830235 (68) | |
Text
Davis-Besse Nuclear Power Station IMC 0350 Meeting 1
Davis-Besse Nuclear Power Station October 7, 2003
Desired Outcomes
- Provide results of the Normal Operating Pressure (NOP) Test
- People, Plant, and Processes
- Demonstrate that we have identified and addressed plant material and people issues requiring attention for restart
- Communicate remaining actions for restart Lew Myers Chief Operating Officer - FENOC 2 Davis-Besse Nuclear Power Station October 7, 2003
Meeting Agenda
- Outage Accomplishments....Lew Myers
- NOP Test Challenges
-Equipment..Greg Dunn
-Operational .......Mike Roder
- Assessment of Organizational Processes.Rick Dame
- Oversight Perspective............Steve Loehlein
- Results/Lessons-Learned from NOP Test.....Mark Bezilla
- Remaining Actions for Restart.Mike Ross
- Overall Conclusions........Lew Myers Lew Myers Chief Operating Officer - FENOC 3 Davis-Besse Nuclear Power Station October 7, 2003
Personnel Changes
- Joe Hagan is the new FENOC Senior Vice-President overseeing Engineering and Support Services and reports to Gary Leidich, President and Chief Nuclear Officer -
-Former senior Vice President of Nuclear Operations (Exelon Generation)
-Bachelor of Science degree in Electrical Engineering
-Master of Science Degree in Engineering Management
-Licensed BWR Senior Reactor Operator at Hope Creek
-Twenty-six years nuclear power experience Lew Myers Chief Operating Officer - FENOC 4 Davis-Besse Nuclear Power Station October 7, 2003
Personnel Changes
- Barry Allen is the new Plant Manager for Davis-Besse and reports to Mark Bezilla, Vice-President
-Bachelors degree in architecture structure
-Masters degree in Civil Engineering
-Senior Reactor Operator Certification at ANO-2
-Seventeen years nuclear power experience Lew Myers Chief Operating Officer - FENOC 5 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments Lew Myers Chief Operating Officer - FENOC 6
Davis-Besse Nuclear Power Station October 7, 2003
Desired Outcome
- Reflect and status the NRC and public on our outage accomplishments to date 7
Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Restart Test Plan Objectives have been fully met
-Assured plant/personnel safety
-Conducted Post-Maintenance/Modification Testing successfully
-Results are being assessed 8
Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Demonstrated confidence in plant systems and equipment
-Completed Testing
-Integrated Leak Rate Test (April 9)
-50 psig Test (May 6)
-250 psig Test (May 25)
-Normal Operating Pressure Test (October 2) 9 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments Plant Inspectors during NOP Test 10 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Reactor Vessel and Reactor Coolant System
-Reactor Pressure Vessel Head Replacement *
-Access Openings In The Reactor Vessel Head Stand
-Control Rod Drive Mechanism Nozzle Inspection/Repair
-Replace Reactor Vessel Head & Service Structure
-Reactor Vessel Head Transportation/Handling
-Service Structure Access Openings
-Original Reactor Head Nozzle Samples
-Original Reactor Head Shipped Offsite
-FLÜS Leak Monitoring System *
-Installed FLÜS Leak Monitoring System
-Incore Detector Tubes, to support repairs (pending NOP test results) 11 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Reactor Coolant System (RCS)
-Replaced Pressurizer Code Safeties and PORV
-Reactor Cavity Seal Plate Modification
-Reactor Coolant System Deep Drain Valve Maintenance
-Replaced Thermal Sleeves for HPI Lines 2-1 and 2-2
-Fuel Integrity Verification
- Reactor Coolant Pumps (RCP)
-Reactor Coolant Pump 1-1 and 1-2 Replacement
-RCP 1-1 Shaft Replacement
-Replaced N-9000 Seal Cartridges on all RCPs
- RCS Thermowell Replacement
-Replace RCS Cold Leg Thermowells
-Replace RCS Hot Leg Thermowells 12 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Containment and Containment Systems
-Reactor Vessel Head Replacement Support
-Containment Structure Access Opening
-Restore Temp Access Openings
-Containment Integrated Leak Rate Test
-Boric Acid Extent of Condition Inspections Completed
-Containment Emergency Sump Modification
-Removed Fibrous Insulation In Containment 13 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Containment and Containment Systems (continued)
-Containment Air Coolers (CAC)
-Replaced Cooling Coils, Service Water Trees/Bellows, Drop Down Registers
-Replace CAC Fan Motors MC 2 & 3
-Annulus Work Activities
-Apply Water Tight Annulus Membrane
-Containment Vessel Dome Painting 14 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Containment and Containment Systems (continued)
-Containment Cranes / Bridges
-Polar Crane Refurbishment
-In-Mast Sipping Capability Mod
-Upgrade Of Fuel Handling Transfer System
-Upgrade Of The Main Fuel Handling Bridge
-Containment Moisture Seal Installation
-Containment Vessel Interface Seal 15 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Emergency Core Cooling System
-High Pressure Injection System
-Decay Heat System
-Post-LOCA Boric Acid Precipitation Control Modification
-Decay Heat Pump Cyclone Separators for Containment Debris Issue
-Decay Heat Valve Tank Modification 16 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Electrical Systems
-Train 1 Station Battery Replacement
-Electrical Transient Analysis Program Modifications
-Thermal Overload Heater Modification on 28 Motor Control Center Components Overload 17 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Emergency (& Station Blackout) Diesel Generators
-Emergency Diesel Generator (EDG) 2 Maintenance Outage (EDG 1 Scheduled Post NOP)
-EDG Motor Operated Potentiometer
-High Temp-EDG Rooms-Install Manifold Insulation
-EDG Room Temps-Install Ductwork
-Replace EDG Air Start Systems 18 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Instrument and Controls Systems
-Safety Features Actuation System
-Integrated SFAS Testing
-SFAS Relay Replacement / Restoration
-Radiation Monitor Upgrade Modifications
-Replace Control Room Radiation Monitor Recorders
-Replace Obsolete Victoreen Radiation Monitors 19 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Air Operated Valves
-Implemented program to improve response time
-Addressed 83 valves
-Established functional program 20 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments
- Plant Systems that will be removed from the a(1) Red Maintenance Rule status
-Auxiliary Feedwater System
-Instrument Isolation valves on RCS Reactor Protection System 2-Low Instrumentation
-Station and Instrument Air
-Containment Air Monitoring
-Emergency Diesel Generator
-Essential & Miscellaneous AC 21 Davis-Besse Nuclear Power Station October 7, 2003
Outage Accomplishments Management and Human Performance
- Root Cause training for employees
- Corrective Action Program Enhancements
- Problem Solving/Decision Making NOP
- Standards and expectations training for employees
- Safety Culture Model and Assessment Process
- Operability Training for SROs and Engineers
- New management team 22 Davis-Besse Nuclear Power Station October 7, 2003
DAVIS-BESSE SITE ORGANIZATION FENOC Chief Operating Officer Lew W. Myers Experience: Browns Ferry FENOC, South Texas, Waterford MBA BS - Mechanical Engineering SRO License - Waterford and St. Lucie Director - Organizational 20 years experience (7 years FE)
Development Vice President - Nuclear J. Randel Fast Mark Bezilla Experience: Beaver Valley, Farley Restart STP, Westinghouse Experience: DBNPS, Perry, Salem BS - Technology and Management BS - Nuclear Engineering Technology 25 years experience (4 years FE) SRO License - DBPNS and TMI 26 years experience (10 years FE)
Director Support Services Director DB Nuclear Engineering Restart Director Plant Manager Robert W. Schrauder James J. Powers III Michael J. Ross Barry Allen Experience: Perry (Contractor) Experience: ANO, Waterford, MS - Mechanical Engineering River Bend Experience: Restart DBNPS, Perry BS - Civil Engineering; BA - Chemistry Experience: Restart TMI BS - Architecture Structures BS - Nuclear Engineering PE - New York MBA - Civil Engineering Associates Degree in Science SRO Certification - PNPP SRO License - PNPP 30 years experience SRO Certification ANO - 2 25 years experience (16 years FE) 26 years experience (8 years FE) SRO License 17 years experience Design Basis Regulatory Affairs Engineering Maintenance Chemistry Emergency Plant Engineering Outage Management Preparedness Radiation Protection and Work Control Nuclear Training Quality Services Project Management Plant Operations Human Resources Security 23 Davis-Besse Nuclear Power Station October 7, 2003
DAVIS-BESSE SITE ORGANIZATION DB Nuclear Support Services Restart Plant Engineering Manager Regulatory Affairs Manager Chemistry Manager Nuclear Training Manager Design Basis Engineering Kevin L. Ostrowski Patrick J. McCloskey John E. Reddington John J. Grabnar BS - Engineering MS - Environmental Management MS - Nuclear Engineering MBA BS - Physics SRO Certification - DBNPS BS - Civil Engineering BS - Civil Engineering SRO License (Beaver Valley) Class III, State of Ohio, Operator SRO - DBNPS SRO License - PNPP 23 years experience (FE) 18 years experience (FE) PE - States of Illinois and Ohio PE - State of Ohio 19 years experience (FE) 24 years experience (17 years FE)
Manager Radiation Protection Manager Quality Services Richard P. Farrell Manager Plant Engineering Manager Human Resources Linda M. Dohrmann Deanna L. Haskins Brian Boles MS BA - Liberal Arts 20 years experience BS - Mechanical Engineering BA - Human Resource Management/
27 years experience (FE) Organization Development SRO License - PNPP 17 years experience (FE) AA - Business Management Manager Plant Operations 18 years experience (FE)
Manager Security William A. Mugge Michael J. Roder Manager Project Management Charles A. Hawley, Hawley, Jr BS - Mechanical Engineering BS - Electrical Engineering SRO License - DBNPS SRO License - DBNPS BS - Mechanical Engineering 17 years experience (FE) 17 years experience (FE)
SRO License - DBNPS 30 years experience (17 years FE)
Director Maintenance Michael J. Stevens Experience: Return to Service Quad Cities BS - Mechanical Engineering Technology SRO Certification 19 years experience (4 years FE)
Manager Outage Management and Work Control Gregory A. Dunn BS - Chemistry AS - Nuclear Technologist SRO License - PNPP 23 years experience (FE) 24 Davis-Besse Nuclear Power Station October 7, 2003
Equipment Challenges Greg Dunn Manager - Outage Management and Work Control 25 Davis-Besse Nuclear Power Station October 7, 2003
Equipment Challenges Containment Spray Pumps
- Problem Statement
-Containment Spray Pumps failed to start on several occasions
-Initial Problem-Solving focused upon the over current trip
- Cause
-Probable cause was spurious trips from the Solid State Trip (SST)
Ground Fault Trip Device
- Corrective Actions
-Pump #1 replacement breaker SST without ground fault trip
-Pump #2 replacement breaker refurbished SST
-Engineering Change under development for elimination of SST ground fault trips (extent of condition) 26 Davis-Besse Nuclear Power Station October 7, 2003
Equipment Challenges Thermal Overload Relays
- Problem Statement
-Thermal Overloads installed as a design change exhibited a trip
-Some loads remained running following an overload trip
- Causes
-Sizing of the Thermal Overload relays
-Relay Race Condition introduced
- Corrective Actions
-Overloads sized close to the normal operating current were replaced to increase margin
-28 Circuits require overload settings increased and 15 circuits require wiring changes (extent of condition) 27 Davis-Besse Nuclear Power Station October 7, 2003
Equipment Challenges Auxiliary Feedwater Pump Testing
- Problem Statement
-Surveillance Test of Auxiliary Feedwater Pump #1 response time exceeded Acceptance Criteria
- Cause
-Misalignment of governor valve linkage coupled with installation of a new valve
- Corrective Actions
-Governor linkage was disconnected and adjusted/reconnected in accordance with plant maintenance procedures
-Response time repeatability demonstrated with confidence tests 28 Davis-Besse Nuclear Power Station October 7, 2003
Equipment Challenges Mode 3 Walkdown Summary Category Description Total Items No Action Required Findings that are documented 31 but no actions are required (Monitor per Boric Acid Corrosion Program)
Ready for reinspection Components that were adjusted 24 and cleaned and are ready for reinspection Reinspection Satisfactory Components that were adjusted, 47 cleaned and reinspected satisfactorily Action Required Components that require repair 61 adjustment, cleaning, etc., that was unable to be preformed during Mode 3 Total 163 Total Walkdown/Inspection population (approximately) 1342 29 Davis-Besse Nuclear Power Station October 7, 2003
NOP Test Challenges Operations Mike Roder Manager - Plant Operations 30 Davis-Besse Nuclear Power Station October 7, 2003
Desired Outcome
- Demonstrate confidence in addressing NOP Test Operational Issues 31 Davis-Besse Nuclear Power Station October 7, 2003
NOP Test Challenges Core Flood Tank Valve
- Problem Statement
-Inadvertent opening of Core Flood Tank Valve (CF1B)
- Causes
-Procedure guidance
-Operator performance
-Training
- Corrective Actions
-Relieved crew
-Corrected procedure
-Conducted just-in-time training
-Improved standards for pre-job briefs 32 Davis-Besse Nuclear Power Station October 7, 2003
NOP Test Challenges Reactor Protection System Trip
- Problem Statement
-RPS tripped
- Causes
-Procedure guidance
-Operator performance
-Training
- Corrective Actions
-Relieved crew
-Created management guidance for cooldown activities
-Revised procedure
-Created reverse pre-job brief document
-Conducted training for each evolution
-Added FENOC oversight in Control Room 33 Davis-Besse Nuclear Power Station October 7, 2003
NOP Test Challenges Operations
- Operations Action Plan
-Root Cause and Collective Significance Teams formed
-Interviewed each Senior Reactor Operator and Reactor Operator
-Optimize Operating Crews
-Strengthen integrated Operating procedures
-Improve Operator Training
-Assess enhanced crew oversight 34 Davis-Besse Nuclear Power Station October 7, 2003
NOP Test Challenges Conclusion
- Conclusions
-NOP Test was successful
-Operation performance issues identified
-Operations Action Plan will address corrections 35 Davis-Besse Nuclear Power Station October 7, 2003
Operational Readiness Assessment Results Rick Dame Reliability Unit - Supervisor 36 Davis-Besse Nuclear Power Station October 7, 2003
Operational Readiness Assessment Results
- Desired Outcome
- Share observations and conclusions from Operational Readiness Assessment
- Assessment methodology
- Integrated Assessment Team
- Applied industry recognized standards of excellence.
- Conducted per Integrated Restart Test Plan 37 Davis-Besse Nuclear Power Station October 7, 2003
INTEGRATED ASSESSMENT DURING NOP TEST PRODUCT QA PLANT STAFF EXTERNAL READINESS REPORTS QA ASSESSMENT REPORT (QFOs)
LINE FOCUSED ASSESSMENT FINAL PLANT READINESS ASSESSMENT (EXERCISES)
MGMT. (EXERCISES)
REPORT INDEPENDENT INTERNAL OVERSIGHT SAFE PLANT OPERATION M PROCEDURE USE M EFFECTIVE COMMUNICATION M CONDUCT OF MAINTENANCE M CONDUCT OF RADIATION PROTECTION PLANT CONSERVATIVE DECISION MAKING ELT REVIEW FOR M PROBLEM OWNERSHIP READINESS STAFF M CORRECTIVE ACTION M SAFETY CULTURE PLANT& STAFF READY FOR RESTART EXTERNAL (FENOC)
ORGANIZATIONAL ASSESSMENT
& REVIEW FOR READINESS RESTART OVERSIGHT PANEL REVIEW EXTERNAL OPERATIONAL ASSESSMENT FOR READINESS ORGANIZATIONAL EFFECTIVENESS QA ROOT CAUSE ISSUES ADDRESSED (INDEPENDENCE, CRITICALITY) 38 Davis-Besse Nuclear Power Station October 7, 2003
Operational Readiness Assessment Results
- Observation Summary
- In general, observations from peers outside of the Davis-Besse organization tended to be more critical of performance
- Shift management oversight of operational activities can be improved 39 Davis-Besse Nuclear Power Station October 7, 2003
Operational Readiness Assessment Results
- Observation Summary
- Some performance shortfalls were identified in the monitoring of plant parameters and trends, and in turn, anticipating the operational impact of these trends
- Differences exist in operational pre-job briefs standards between Davis-Besse and industry leaders 40 Davis-Besse Nuclear Power Station October 7, 2003
Operational Readiness Assessment Results
- Observation Summary
- The quality of some operational procedures is below that observed at industry leading performers
- Some weaknesses were observed in the area of procedural compliance 41 Davis-Besse Nuclear Power Station October 7, 2003
Operational Readiness Assessment Results
- Observation Summary
- Problem Solving and Decision Making Process was used by station personnel to resolve complex issues
- Improvements can be made in the implementation of the Problem Solving and Decision Making Process 42 Davis-Besse Nuclear Power Station October 7, 2003
Operational Readiness Assessment Results
- Observation Summary
- Benchstrength in certain technical disciplines must be replenished to support sustained organizational performance improvement
- System Engineering/Operations interface is not as strong as that observed at industry leaders
- Improvement opportunities exist in the performance of Management observations and coaching 43 Davis-Besse Nuclear Power Station October 7, 2003
Operational Readiness Assessment Results
- Conclusions
- Processes and programs support safe and reliable operation when properly implemented
- Station Management demonstrated effective operational decision making principles when collectively engaged
- Improvements must be implemented to address Operations performance 44 Davis-Besse Nuclear Power Station October 7, 2003
Oversight Perspective Steve Loehlein Manager - Nuclear Quality Assessment 45 Davis-Besse Nuclear Power Station October 7, 2003
Assessment Objectives
- Health of Plant Systems and Equipment
- Organizational effectiveness
- Effectiveness of Restart Test Plan 46 Davis-Besse Nuclear Power Station October 7, 2003
Assessment Results
- Health of Plant Systems and Equipment
-Equipment performance
-Plant Walkdown results 47 Davis-Besse Nuclear Power Station October 7, 2003
Assessment Results
- Organizational Effectiveness
-Operations Leadership
- Safety Culture
- Configuration Control
- Procedure Compliance 48 Davis-Besse Nuclear Power Station October 7, 2003
Assessment Results
- Restart Test Plan
-Provided valuable insights for Management
-Emphasis on Control Room Activities and organizational response to emergent issues
-Observations and conclusions similar to those of Quality Oversight 49 Davis-Besse Nuclear Power Station October 7, 2003
Key Lessons Learned
- Organizational weaknesses appear to have been factors in performance shortfalls
- Prevention of unintended plant responses requires effective barriers prior to Operations performance of evolutions 50 Davis-Besse Nuclear Power Station October 7, 2003
Recommendations
- Organizational
- Complete Collective Significance review of causes of performance shortfalls
-Identify causes (barriers) that need attention
-Utilize external assistance to ensure completeness of corrective actions
-Ensure procedures, training, and performance standards are adequate for future plant evolutions
-Implement appropriate corrective actions 51 Davis-Besse Nuclear Power Station October 7, 2003
Recommendations
- Organizational (continued)
-Train on Configuration Management process
-Implement effective trend review process
-Ensure quality and execution of key Operations procedures
-Improve coordination of Problem-Solving process with Corrective Action Program
-Emphasize need for inter-department management challenges 52 Davis-Besse Nuclear Power Station October 7, 2003
Recommendations
- Oversight
-Supplement Management and Quality Oversight with off-site assistance to improve objectivity and ensure assessments are sufficiently critical
-Focus Quality Oversight on cross-functional activities and interfaces 53 Davis-Besse Nuclear Power Station October 7, 2003
Normal Operating Pressure Test Results/Lessons-Learned Mark Bezilla Vice President/Plant Manager 54 Davis-Besse Nuclear Power Station October 7, 2003
Desired Outcome
- Provide an overview of what we learned from the Normal Operating Pressure Test 55 Davis-Besse Nuclear Power Station October 7, 2003
Restart Test Program
- Integrated Leak Rate Test - Completed (April 9)
- 50 psig Test - Completed (May 6)
- 250 psig Test - Complete (May 25)
- Normal Operation Pressure Test - Completed (October 2) 56 Davis-Besse Nuclear Power Station October 7, 2003
Normal Operating Pressure Test Heat Up
- Started heat up - September 13
- NOP Test was an opportunity to assess our people, plant, and processes
- Challenges during test were handled in a safe manner and posed a minimal safety risk
-Steam Line Noise - September 13
-Core Flood Tank Valve Opening - September 15
-Containment Spray - September 17
- Conclusion
-Plant issues were investigated and managed 57 Davis-Besse Nuclear Power Station October 7, 2003
Normal Operating Pressure Test
- Total time of test
- > 8 days at Normal Operating Pressure
- Inspected 1300 components
- Overall Leak Rate
-Best in history of plant ~ .006 gpm
- First-ever successful test of FLÜS Leak Monitoring System in the United States
- Proved that our new Reactor Coolant System leak rate program works 58 Davis-Besse Nuclear Power Station October 7, 2003
Normal Operating Pressure Test
- Completed ~ 700 Post Maintenance/Modification Tests
- Tested most primary/secondary equipment
-Reactor Coolant Pumps
-Condensate Pumps
-Feedwater
-Makeup
-Circulating Water
-Condenser activities
- Demonstrated positive Safety Culture and teamwork
-Focused on Industrial Safety, Nuclear, and Radiological Safety
-Organization Effectiveness to resolve issues
-Problem Solving / Decision Making exercised 59 Davis-Besse Nuclear Power Station October 7, 2003
Normal Operating Pressure Test Cooldown
-One bank of control rods were pulled as conservative action
- Problem Solving / Decision Making Team initiated
- Remainder of cooldown to Mode 5 not only event-less but error free 60 Davis-Besse Nuclear Power Station October 7, 2003
Normal Operating Pressure Test Restart Test Plan
- Conclusions
-Focused on safety
-Demonstrated Reactor Coolant System integrity
-Significant Program Improvements
-Demonstrated state-of-the-art technology (FLÜS Leak Monitoring System)
-Containment and overall System Health is very good 61 Davis-Besse Nuclear Power Station October 7, 2003
Remaining Actions for Restart Mike Ross Restart Director 62 Davis-Besse Nuclear Power Station October 7, 2003
Remaining Actions for Restart
- Restart Actions include
-Completion of 10CFR 50.9, Completeness and Accuracy of Information training
-Alignment / teamwork sessions
- One day-long site alignment / teambuilding sessions with employees
- Learning Map rollout
- Operational focus
-Strengthen our Calculation Program 63 Davis-Besse Nuclear Power Station October 7, 2003
Remaining Actions for Restart
- Restart Actions include
-Strengthen our Condition Report Process
- Condition Report Evaluators will receive Apparent Cause training
- Establish an Apparent Cause Review Group consisting of Condition Report Analysts
-Corrective Action Trending
-Plant activities
- Electrical Transient Analysis Program (ETAP) modifications
- High Pressure Injection Pumps modification
- Repair Containment Air Coolers
- Electrical breaker co-ordination modification
- Finish AOV Modification work 64 Davis-Besse Nuclear Power Station October 7, 2003
Remaining Actions for Restart
- Restart Actions include
-Address Lessons-Learned and actions resulting from NOP Test
-Restart Readiness Reviews 65 Davis-Besse Nuclear Power Station October 7, 2003
Overall Conclusions Lew Myers Chief Operating Officer - FENOC 66 Davis-Besse Nuclear Power Station October 7, 2003
Overall NOP Test Conclusions
- Many technical plant changes that improve overall plant safety
- NOP Test demonstrated
-Areas of improvement for people to safely operate the plant
-Response to emergent issues
-Condition of plant equipment
-Identified secondary leaks
-Integrity of reactor coolant system
-Replacement Reactor Vessel Head
-Incore monitoring instrument nozzles 67 Davis-Besse Nuclear Power Station October 7, 2003
Overall NOP Test Conclusions
- Davis-Besse personnel are demonstrating a positive Safety Culture
- Davis-Besse is completing actions necessary to resume safe plant operation 68 Davis-Besse Nuclear Power Station October 7, 2003