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• Ron Short
• Bob Dulee
• Carmen Ovici
• Brian Jelke
• Bill Hansher
Introductions
EPU Project Manager
EPU NSSSjLicensing Manager
EPU NSSSjLicensing Supervisor
Sargent & Lundy EPU PM
FCS Licensing Supervisor
Agenda
• Project Overview - Ron Short
• Methodology Change that May Require Separate NRC Approval- Brian Jelke
• Changes to be Included in EPU License Amendment Request - Bob Dulee
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Project Overview
• 17% EPU: 1500 MWt to 1755 MWt
-75-80 MWe
• Engineering & Licensing work in progress
- AREVAJ S&L and WEe
• Submit LAR to NRC: March 31, 2011
• Plant Modifications: 2011/2012 RFOs
• Implement EPU: Post-2012 RFO
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Spent Fuel Pool Cooling
• Cu rrent Licensing Basis
- Holtec analysis
- In accordance with NRC Branch Technical Position
• EPU Analysis
- GOTHIC Software
- In accordance with NRC Branch Technical Position
• Separate NRC Submittal?
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Realistic Large Break LOCA
(RLBLOCA) Methodology
• Current Methodology: EMF-2103 Rev. 0
• EPU Methodology: EMF-2103 Rev. 0 + NRC Transition Changes
Post-LOCA Long Term Core Cooling
• Current Methodology: Westinghouse Post
LOCA LTCC Analysis Methodology
• EPU Methodology: CE Post-LOCA LTCC Analysis
Methodology
Post-LOCA Long Term Core Cooling
• Additional Issues to be Addressed per NRC Request
- RV Head Mixing Volume
- Pressure Drop Between the Core and the Break
- Boric Acid Solubility Limit
- Decay Heat Multiplier of 1.2 at all times
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Spent Fuel Pool Criticality
• Current Licensing Basis: ~ 4.5 wt % U235
• EPU Licensing Basis: ~ 5.0 wt % U235
- To be included in EPU LAR
- Not needed until 2012 RFO
• Issues with Recent Submittals
Containment Accident Pressure
• Current Licensing Basis Credits Containment Accident Pressure (CAP)
- Maximum current credit is 'V 4 feet
• Preliminary EPU Conditions
- Increase in overpressure credit to 'V 11 feet
- Overpressure credit less than 25% of total
Radiological Consequences
Analysis
• Alternate Source Term (AST) implemented in 2001
• FCS will maintain the CLB for Radiological Dose Consequences Analysis
Radiological Consequences
Analysis • LOCA and Control Rod Ejection Accident (CREA): In
accordance with RG 1.183, Rev. 0
• Heavy Load Drop (HLD) Accident: Utilizes LOCA gap fractions from RG 1.183, Rev. 0
• Non-LOCA analyses: In accordance with RG 1.183, Rev. 0, but gap fractions from NUREG/CR 5009
• Fuel Handling Accident (FHA): FCS specific gap fractions (2 x RG 1.183, Rev. 0)
Alternate PTS Ru Ie
• FCS License Expires August 2033
• Current PTS Rule Acceptable Through 2033
• EPU Impact
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