ML13277A037
| ML13277A037 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 08/20/2013 |
| From: | Duke Energy Carolinas |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| BSEP 13-0104 | |
| Download: ML13277A037 (18) | |
Text
Enclosure 1 BSEP 13-0104 Duke Energy Presentation - Brunswick MELLLA+ Methods Applicability, Pre-Application Meeting, August 20, 2013
Brunswick MELLLA+
Methods Applicability Pre-Application Meeting August 20, 2013
$~DUKE ENERGY.
Brnsic MLA+
Methos Appiablt
- Duke Participants
" Roger Thomas
" Jeff Boaz
" Bill Murray
" Charles Stroupe (Presenter)
- GEH Participants
" Jens Andersen
" Kent Halac
" JD Kvaall
" Jim Harrison
- Bruce Hagemeier r@DUKE ENERGY.
2
- Schedule
- Introduction and Objectives
- Fuel and plant licensing analysis strategy
- GEH Methods Applicability to AREVA fuel
- AREVA Methods Applicability to MELLLA+: Approach
- Summary 3
ENERGY.
Schedule
" MELLLA+ LAR submittal (both Units)
+ B1C19 sample problem with ATRIUMTM 1OXM
" BIC21 cycle specific application results to NRC Fall 2014 Fall 2015
- First planned MELLLA+ cycle
" MELLLA+ requested approval (both Units)
- MELLLA+ implementation
- During B1C21 refueling outage Spring 2016 Spring 2016 DUKE ENERGY.
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- Provide details on GEH methods applicability
- AREVA methods applicability to MELLLA+: Approach
~@DUKE 5
ENERGY.
" On January 8, 2013 Duke energy presented a pre-application meeting with the NRC. (ML13007A373)
" Benefits of MELLLA+
" Approach to fuel and licensing analysis strategies
- Thermal hydraulic stability solution (AREVA's Enhanced Option IIl)
- Containment Accident Pressure (CAP)
" Anticipated Transient Without SCRAM analysis
" MELLLA+ impacts
- Several follow up pre-application meetings were proposed.
For today's meeting, methods applicability will be discussed.
- The NRC requested "The licensee should justify the use and applicability of the GEH generic MELLLA+ LTR to the AREVA approaches and the use of AREVA fuel assemblies."
DUKE 6
ENEGY
Brunswick MELLLA+ Power Flow Map I
120.0 110.0 100.0 90.0 80.0 70.0 o 60.0 50.0 40.0 30.0 20.0 10.0 0.0 0.0 7.7 16.4 23.1 30.8 38.5 46.2 53.9 61.6 69.3 77.0 84.7 92.4 Mlbs/hr Core Flow 0
10 20 30 40 50 60 70 80 90 100 110 120
% Core Flow 7
NERGY.
" All topical areas of the MELLLA+ LTR will be addressed in the LAR
- Duke Energy will address:
" SAR Integration of GEH and AREVA input
" APRM and Enhanced Option III setpoints and implementation
- Risk evaluation, procedure updates, operator training
" Plant changes to mitigate ATWS (SLC B-10 enrichment increase)
- Selected non-fuel impacts 8
ENERGY.
- GEH MELLLA+ LTR process (NEDC-33006P-A) with GEH methodologies and analyses will address:
- Non-fuel impacts
" Long term ATWS and ATWS instability explicitly modeling ATRIUMTM 1OXM fuel 9@"DUKE 9
ENNERGY.
Fuel and plant licensing analysis strategy AREVA
- AREVA methodologies and analyses will address:
° Fuel, core design, COLR fuel limits, LOCA, DBA
" Enhanced Option III (EO-Ill) stability solution
$~DUK ENERGY.
10
fue
- GEH will present information on methods applicability
- ATRIUM TM 10 Fuel Experience
- ATRIUMTM 1 OXM Fuel for ATWS Methods
" Uncertainty Identification/Management Process
- ATRIUMTM 1OXM Modeling Approach
" Methods Application
- Core Modeling
- ATWS Analysis
~@DUKE 11 ENERGY.
- GEH proprietary presentation will be given at this point in the presenation 12
$ENERGY.
" Schedule
- Introduction and Objectives
- Fuel and plant licensing analysis strategy
- GEH Methods Applicability to AREVA fuel
- AREVA Methods Applicability to MELLLA+: Approach
- Summary 1
DUKE 13 ENERGY.
AREA Mehoso Appiabltyt M
LA:
Approac
" An AREVA methods applicability report has been generated that addresses: Thermal-Hydraulics, Core Neutronics, Transient Analysis, LOCA and Stability.
- Report will be submitted for information with the LAR
" Methods applicability report shows
- There are no SER restrictions on AREVA methodology that are impacted by MELLLA+ operation
- MELLLA+ core and assembly conditions for Brunswick are equivalent to core and assembly conditions of other plants for which the methodology was benchmarked
- Bundle operating conditions in the MELLLA+ regime are within the envelope of hydraulic test data used for model qualification and operating experience
- The AREVA methodology is applicable for MELLLA+ conditions at Brunswick 14DUKE 14 ENERGY.
Summary
- GEH methods are applicable to ATRIUM the MELLLA+ condition TM 1OXM fuel in
" ATRIUMTM 1OXM explicitly modeled
- Uncertainties in modeling ATRIUMTM 1OXM fuel with GEH methods addressed
- AREVA methods applicability to MELLLA+
- Methods applicability report will be submitted with LAR 15
$ENERGY.
Brunswick MELLLA+ Fuels Methods Applicability Questions?
c@
uK R-XRGY.
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Selected Acronyms AL - Analytical Limit AP -Annulus Pressurization APRM -Average Power Range Monitor ATWS -Anticipated Transient Without Scram AV - Allowable Value BSP - Backup Stability Protection CAP - Containment Accident Pressure CIER - Channel Instability Exclusion Region COLR - Core Operating Limits Report DBA - Design Basis Accidents ECCS - Emergency Core Cooling System EO-Ill - Enhanced Option III EPU - Extended Power Uprate FWHOOS - Feedwater Heater Out Of Service FWT - Feedwater Temperature GEH - General Electric Hitachi HCTL - Heat Capacity Temperature Limit HSBW - Hot Shutdown Boron Weight LAR - License Amendment Request LOCA-Loss of Coolant Analysis LTR - License Topical Report MELLLA-Maximum Extended Load Line Limit Analysis MELLLA+ - Maximum Extended Load Line Limit Analysis Plus NC - Natural Circulation NPSH - Net Positive Suction Head NTSP - Nominal Trip Setpoint PRNM - Power Range Neutron Monitor SAR - Safety Analysis Report SBO - Station Black Out SLC - Standby Liquid Control SLO - Single Loop Operation SPT - Stability Protection Trip STP - Simulated Thermal Power TLO - Two Loop Operation 2RPT - Two Recirculation Pump TrihoADE*
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