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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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