ML16355A499

Hope Creek - Measurement Uncertainty Recapture (Mur) Power Uprate: Pre-Submittal Meeting

ML16355A499
Person / Time
Site:	Hope Creek
Issue date:	12/21/2016
From:	Public Service Enterprise Group
To:	Office of Nuclear Reactor Regulation
Parker C
References
Download: ML16355A499 (14)

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December 21, 2016 Nuclear ProjectsDecember 21, 2016 Nuclear Projects Measurement Uncertainty Recapture (MUR)

Power Uprate: Pre-Submittal Meeting Measurement Uncertainty Recapture (MUR)

Power Uprate: Pre-Submittal Meeting AGENDA AGENDAObjectives -KopchickStation Overview -KopchickPower History -KopchickLicense Amendment Request -ThomasLicensing Coordination Items -ThomasOverlap with MUR and PRNM Modifications -HeinigHardware Modifications -HeinigProposed LEFM Allowed Outage Time & Actions -HeinigFocus Area -GallaherSchedule -Gallaher 2

OBJECTIVES OBJECTIVESTargeted 1.6% -1.7% increase in core thermal power, from 3840 MWtto 3902 -3906 MWt( ~118.6% of OLTP)~ 18 MWeincrease in generator output (operate closer to but within generator ratings)Reduction in calorimetric uncertainty through use of Cameron CheckPlus Leading Edge Flow Meter (LEFM)Current safety analyses remain boundingImplement concurrent with Power Range Neutron Monitor (PRNM) in April 2018 3

STATION OVERVIEW STATION OVERVIEWGeneral Electric BWR/4, Mark I ContainmentContainment design pressure 62 psigBegan commercial operation in 1986, Original Licensed Thermal Power (OLTP) 3293 MWtCurrent power level 3840 MWt

• MUR 2001*EPU 2008 -restored 2% margin18 month operating cycleTransitioning from GE14 to GNF2 fuel began in H1R20 (fall 2016)Licensed for increased core flow (ICF) (105%)

4 POWER HISTORY POWER HISTORYKey MilestonesImplementation Year MWtFull Power Operating License (OLTP)19863293First Measurement Uncertainty Recapture (MUR)PowerUprate (using CE Nuclear Power Crossflow Ultrasonic Flow Meter)20013339MELLLA Operating Domain2006N/AExtended Power Uprate (EPU)20083840Renewed Operating License2011N/AGNF2 Fuel Introduction (H1R20)2016N/AProposed MUR Power Uprate (using Cameron CheckPlusLEFM)20183902 to 3906Proposed MELLLA+2019 5

LICENSE AMENDMENT REQUEST LICENSE AMENDMENT REQUESTLAR in accordance with the guidance contained in NRC Regulatory Issue Summary (RIS 2002-03, "Guidance on the Content of MUR Power Uprate Applications"

• Cross-reference matrix included in LARLAR based on NRC approved Topical Reports

• GE-Hitachi (GEH) NEDC-32938P-A, "Generic Gu idelines and Evaluations for General Electric Boiling Water Reactor Thermal Power Optimization," Revision 2, May 2003

• GEH NEDC-33173P-A, "Applicability of GE Methods to Expanded Operating Domains," Revision 4, November 2012

• CaldonER-80P, "Improving Thermal Power Accuracy and Plant Safety While Increasing Operating Power Level Using LEFM Check System," Revision 0, March 1997

• CaldonER-157P-A, "Supplement to Topical Report ER-80P: Basis for Power Uprate with the LEFM Check or CheckPlus System," Revision 8, August 2010LAR consistent with recent MUR LARs (Fermi 2 and Columbia)

• GEH Safety Analysis Report addresses previous industry responses to applicable NRC RAIs for MURs

• Addresses Limitations and Conditions of NEDC-33173P-ALAR will meet the scope and depth of NRC LIC-109, "Acceptance Review Procedures" 6

LICENSING COORDINATION ITEMSLICENSING COORDINATION ITEMSMUR LAR to follow Power Range Neutron Monitor (PRNM) LAR Phase 1 and 2

• PRNM Phase 1 -Submitted September 2015

• PRNM Phase 2 -Submitted September 2016

• Both the PRNM and MUR LARs will impact some of the same TS Reactor Trip function and Control Rod Block function instrumentation setpoints

• Plan is for MUR submittal prior to PRNM LAR approval, with MUR TS based upon PRNM implementationWould be considered a linked submittal per NRC LIC-109 and can be managed similar to precedent PRNM/Uprate

• Grand Gulf PRNM and EPU overlap in 2012. Grand Gulf EPU license condition for PRNM approval and implementation prior to EPU implementation.

• Hope Creek MUR implementation will be conditioned on PRNM LAR approval and implementationCoordination discussion with NRC held on October 27, 2014. Reactor Systems and I&C Branch indicated no objections with the approach.

7 OVERLAP WITH MUR AND PRNM MODIFICATIONS OVERLAP WITH MUR AND PRNM MODIFICATIONSPRNM SettingsAPRM STP Scram and Rod Block SLO and TLO setpoints affected by MUR

• Flow-biased setpoints are reduced by the amount of the uprate to maintain the same absolute power

• High flow clamp unchanged in % RTPCycle-specific ABSP setpoints affected by MUR

• Revised setpoints bound Region I for revised MUR Power-to-Flow map

• Determined via reload analysisCycle-specific OPRM S ADsetpoint determined via reload analysisThermal limits monitoring threshold maintained at 24% RTP, therefore OPRM armed region is unaffected in % RTPAll other APRM, OPRM, and RBM setpoints unchanged in % RTPOther modification impactsPlant computer changes for MUR are implemented concurrently with plant computer changes for PRNMCyber Security

• LEFM is Level 3 and communicates with the plant computer

• No impact to PRNM cyber security controls 8

MUR HARDWARE MODIFICATIONSMUR HARDWARE MODIFICATIONSHigh Pressure Turbine (HPT)

• Maintain flow margin with HPT modifications to increase flow areaUltrasonic Feedwater (FW) Flow Meter

• Cameron LEFM CheckPlus System

• Install single chordal spool piece in 30 inch diameter common FW header, downstream of 6 thstage HP FW heaters (not currently installed)

• Uncertainty values determined by Alden Research Laboratory testing

• Testing configuration mirrored the actual plant piping configuration for the installation location 9

LEFM PROPOSED ALLOWED OUTAGE TIME & ACTIONS LEFM PROPOSED ALLOWED OUTAGE TIME & ACTIONS LEFM Operational ModesProposed Allowed Outage Time (AOT) of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (included in procedures controlled by 50.59 consistent with previous HC MUR) Fail Mode*Restore to Normal mode within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or reduce thermal power to 3840 MWt. Remain 3840 MWtuntil LEFM restored to Normal or Maintenance mode OR*Restore to Maintenance mode within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> and reduce thermal power to 3890 MWt. Plant can operate at this power level indefinitely.Maintenance Mode

• Restore to Normal mode within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or reduce thermal power to 3890 MWt. Plant can operate at this power level indefinitely.

10LEFM ModeMaximum Power Level (MWt)Pre Alden Lab TestingLEFM UncertaintyPre Alden Lab TestingCheckPlus(Normal)3902 -39060.37%

Check (Maintenance)38900.69%Fail3840N/A FOCUS AREAFOCUS AREASteam Dryer Structural Integrity

• CDI completed a stress analysis in 2008 supporting EPU to 3840 MWt. No perforated plate dampening was credited. Minimum alternating stress ratio (MASR) was >2.0.

• CDI subsequently identified an error in the acoustic circuit model (ACM) used for calculating the acoustic pressure loading on the steam dryer. CDI revised the steam dryer stress analysis to correct the ACM code error. No perforated plate dampening was credited. MASR was reduced to 1.07.The NRC reviewed this situation (CAC No. MF7077) and concluded that there was reasonable assurance that the HC steam dryer would maintain structural integrity for continued operation at EPU conditions.

• HC steam dryer will maintain structural integrity operating at MUR conditionsPreliminary analysis shows MASR at MUR is approximately 1.04 at the same two locations that were 1.07 at CLTP. These locations are inspectable.All other locations maintain MASR greater than or equal to 1.10.HC has completed BWRVIP-139-A inspections during the 6 refueling outages since EPU with no identified fatigue crackingMoisture carryover since EPU is below acceptable moisture content of 0.10 wt.% and is expected to remain below 0.10 wt.% with MUR, indicating satisfactory dryer performanceLong term inspections of HC steam dryer will continue per NRC approved BWRVIP-139-A guidelines 11 SCHEDULE SCHEDULEPre-submittal MeetingDecember 2016LAR submittalEarly 2 nd QTR 2017Design Change Package IssuedJune 2017Requested NRC approvalMarch 2018LEFM installationApril 2018ImplementationApril 2018 12