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Steve Byrne Senior VP, Nuclear OperationsJeff Archie General Manager, Nuclear Plant OperationsMike Fowlkes General Manager, Engineering ServicesRon Clary Manager, Nuclear LicensingAlan Torres Outage ManagerJerry Weatherford RHR Retrofit Project Lead
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• VCS Organization Changes Steve Byrne• RF-14 Alan Torres• Reactor Vessel ISI Ron Clary• RHR Pump Jerry Weatherford
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V. C. Summer Nuclear StationManagement Organizational Changes
Dan GatlinManager
Operations
Frank BaconManagerChemistry
Shaun ZarandiManager
Maintenance Services
L. A. BlueManager
Health Physics
Alan TorresManager
Planning / Outage
Jeff ArchieGeneral Manager
Nuclear Plant Operations
Terry MatloszManager
Org. Dev. & Perf.
Chris CastonTeam Leader
Document Control & Records
Dave LavigneGeneral ManagerOrg. Effectiveness
John NesbittManager
Materials & Procurement
Wayne StuartManager
Plant Support Engineering
TBDManager
Design Engineering
Mike FowlkesGeneral Manager
Engineering Services
Ron ClaryManager
Nuclear Licensing
Steve FurstenbergManager
Nuclear Training
Mel BrowneManager
Quality Systems
Mark FindlayManager
Nuclear Protection Services
Ken NettlesGeneral Manager
Nuclear Support Services
Bob WaselusManager
Stragetic Plan. & Dev.
Steve ByrneSr. Vice President
Nuclear Operations Division
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• Human Performance• Corrective Action Program• Root Cause Analysis• Operating Experience• Trend Analysis• Self Assessments• Benchmarking
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General Overview
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• Our Number 1 Goal – Safety
• Nuclear• Radiological• Industrial
• Duration - 36 days• Dose goal - To be determined after source term • Emphasize human performance
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• Modifications– RHR pump seal – Complete RHR miniflow switch relocation– RHR vent addition– CW pump trip circuitry– Feedwater heater level transmitter logic change– Gravity boration flow path
• PRA review indicates no change in CDF
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• Reactor Vessel– Ten Year ISI– Bare metal visual inspections – Head/BMI
• Low pressure turbine maintenance• ILRT of the Reactor Building• “A” Train electrical maintenance• “B” CCW heat exchanger repair and coating• “C” RCP
– Seal replacement– Motor replacement
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Steve Byrne Senior VP, Nuclear OperationsJeff Archie General Manager, Nuclear Plant OperationsMike Fowlkes General Manager, Engineering ServicesRon Clary Manager, Nuclear LicensingAlan Torres Outage ManagerJerry Weatherford RHR Retrofit Project Lead
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• VCS Organization Changes Steve Byrne• RF-14 Alan Torres• Reactor Vessel ISI Ron Clary• RHR Pump Jerry Weatherford
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V. C. Summer Nuclear StationManagement Organizational Changes
Dan GatlinManager
Operations
Frank BaconManagerChemistry
Shaun ZarandiManager
Maintenance Services
L. A. BlueManager
Health Physics
Alan TorresManager
Planning / Outage
Jeff ArchieGeneral Manager
Nuclear Plant Operations
Terry MatloszManager
Org. Dev. & Perf.
Chris CastonTeam Leader
Document Control & Records
Dave LavigneGeneral ManagerOrg. Effectiveness
John NesbittManager
Materials & Procurement
Wayne StuartManager
Plant Support Engineering
TBDManager
Design Engineering
Mike FowlkesGeneral Manager
Engineering Services
Ron ClaryManager
Nuclear Licensing
Steve FurstenbergManager
Nuclear Training
Mel BrowneManager
Quality Systems
Mark FindlayManager
Nuclear Protection Services
Ken NettlesGeneral Manager
Nuclear Support Services
Bob WaselusManager
Stragetic Plan. & Dev.
Steve ByrneSr. Vice President
Nuclear Operations Division
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• Human Performance• Corrective Action Program• Root Cause Analysis• Operating Experience• Trend Analysis• Self Assessments• Benchmarking
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• Reactor Vessel– Ten Year ISI– Bare metal visual inspections – Head/BMI
• Low pressure turbine maintenance• ILRT of the Reactor Building• “A” Train electrical maintenance• “B” CCW heat exchanger repair and coating• “C” RCP
– Seal replacement– Motor replacement
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• ILRT• Finding the fuel leak• Coating the “B” CCW heat exchanger• Timing of inspection of bottom of Reactor
Vessel
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• V. C. Summer currently in 2nd ISI Interval– January 1, 1994 through December 31, 2003– RF-14 scheduled October 11 through November
15, 2003• 10 year ISI
• Reactor Vessel *• Cold Legs*• Hot Legs
* Core barrel must be removed to perform
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• Fully qualified for detection and length sizing of circumferential flaws
• Procedure limitation in the detection of axial flaws
• Limited qualifications for depth sizing of flaws– Demonstrated to size within 7.38 % RMSP of the
wall thickness at the location of the flaw
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• UT – Circumferential and axial directions
• ET• Remote Enhanced Visual• Surface Profile Mapping
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Detected Circ FlawLength Size – UT
Depth Size – UT Difference between actual vendor RMS sizing error and 0.125” RMS will be added to the through-wall size before assessment.
Detected Axial FlawLength Size – ET
First Option - UT
Difference between actual vendor RMS sizing error and 0.125” RMS will be added to the through-wall size before assessment.
Second Option –Conservative depth assumption based on ET measured length if not detected by UT.
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Loop Leg RF-12 Circ. Location/
Orientation
RF-12 Length (Eddy
Current)
RF-13 Length (Eddy
Current)
RF-13 UT Length / Depth
A Cold (N335)
326/circ. 0.5”
B Hot (N265)
35/circ. 0.6” 0.5”
200.8/axial** 0.25” 0.5” * 0.625” / 0.317”
348/axial 0.25” 0.25” B Cold
(N215) No
Indications
C Hot (N145)
309/circ.** 0.5” 0.5” 0.375” / 0.11”
C Cold (N95)
200/circ. 0.5”
* Attributed to improved detection and sizing capability ** Indications also defined by UT examination. Evaluated and accepted to IWB 3600.
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• Identify and characterize the previously identified indications
• If all previously identified indications are not found – then supplemental NDE must be performed
• Discuss actual inspection results with NRR
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• If the results demonstrate no crack growth:– Restart without the need for further (beyond RF-14)
NRC staff approval– Complete three successive examinations of the
welds in accordance with ASME Code requirements– Provide highlighted reference in cover letter of 90
day ISI report on Hot Leg exam results
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• Results of RF-14 examinations will drive NRC staff’s expectations for future NDE– Demonstration that current examination methods
accurately characterize indications (may not need supplemental NDE)
– Surface indication results show “not a flaw” (may not need supplement NDE)
– Inconclusive surface indication results (may need supplement NDE)
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• Staff evaluation is required• If the condition is safe for the duration of the next
outage, then the licensee will be allowed to restart for one cycle, subject to new inspection requirements
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• VC Summer and NRR agreed at the 9-10-03 meeting that the direction being taken by VC Summer in RF-14 is appropriate.
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RF-14 RHR Retro Fit Modification
VC SUMMER
Westinghouse
FlowServe
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• Scope of modification “A” RHR Pump– Support stand – Spacer coupling – Upper & lower hub Assembly
• Project duration 5 days• ALARA estimate 2.75 REM
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Seal coolerSeal cooler
Impeller 10 inches
Stuffing Box 12 inches X 41 inches
Motor 47 inchesApproximately 6000 lbs
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18” by 18” opening
Support stand with an 18” X 18’’ opening
sealBearing Housing
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Upper (Driver) Hub Assembly Lower
(Pump) Hub Assembly
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