ML16355A499
| 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) | |
Text
December 21, 2016 Nuclear Projects December 21, 2016 Nuclear Projects Measurement Uncertainty Recapture (MUR)
Power Uprate: Pre-Submittal Meeting Measurement Uncertainty Recapture (MUR)
Power Uprate: Pre-Submittal Meeting
AGENDA AGENDA
Objectives - Kopchick
Station Overview - Kopchick
Power History - Kopchick
License Amendment Request - Thomas
Licensing Coordination Items - Thomas
Overlap with MUR and PRNM Modifications - Heinig
Hardware Modifications - Heinig
Proposed LEFM Allowed Outage Time & Actions - Heinig
Focus Area - Gallaher
Schedule - Gallaher 2
OBJECTIVES OBJECTIVES
Targeted 1.6% - 1.7% increase in core thermal power, from 3840 MWt to 3902 - 3906 MWt ( ~118.6% of OLTP)
~ 18 MWe increase 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 bounding
Implement concurrent with Power Range Neutron Monitor (PRNM) in April 2018 3
STATION OVERVIEW STATION OVERVIEW General Electric BWR/4, Mark I Containment Containment design pressure 62 psig Began commercial operation in 1986, Original Licensed Thermal Power (OLTP) 3293 MWt Current power level 3840 MWt MUR 2001 EPU 2008 - restored 2% margin 18 month operating cycle Transitioning from GE14 to GNF2 fuel began in H1R20 (fall 2016)
Licensed for increased core flow (ICF) (105%)
4
POWER HISTORY POWER HISTORY Key Milestones Implementation Year MWt Full Power Operating License (OLTP) 1986 3293 First Measurement Uncertainty Recapture (MUR)
Power Uprate (using CE Nuclear Power Crossflow Ultrasonic Flow Meter) 2001 3339 MELLLA Operating Domain 2006 N/A Extended Power Uprate (EPU) 2008 3840 Renewed Operating License 2011 N/A GNF2 Fuel Introduction (H1R20) 2016 N/A Proposed MUR Power Uprate (using Cameron CheckPlus LEFM) 2018 3902 to 3906 Proposed MELLLA+
2019 5
LICENSE AMENDMENT REQUEST LICENSE AMENDMENT REQUEST
LAR 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 LAR
LAR based on NRC approved Topical Reports GE-Hitachi (GEH) NEDC-32938P-A, Generic Guidelines 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 Caldon ER-80P, Improving Thermal Power Accuracy and Plant Safety While Increasing Operating Power Level Using LEFM Check System, Revision 0, March 1997 Caldon ER-157P-A, Supplement to Topical Report ER-80P: Basis for Power Uprate with the LEFM Check or CheckPlus System, Revision 8, August 2010
LAR 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-A
LAR will meet the scope and depth of NRC LIC-109, Acceptance Review Procedures 6
LICENSING COORDINATION ITEMS LICENSING COORDINATION ITEMS
MUR 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 implementation
Would 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 implementation
Coordination discussion with NRC held on October 27, 2014. Reactor Systems and I&C Branch indicated no objections with the approach.
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OVERLAP WITH MUR AND PRNM MODIFICATIONS OVERLAP WITH MUR AND PRNM MODIFICATIONS
PRNM Settings
APRM 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 % RTP
Cycle-specific ABSP setpoints affected by MUR Revised setpoints bound Region I for revised MUR Power-to-Flow map Determined via reload analysis
Cycle-specific OPRM SAD setpoint determined via reload analysis
Thermal limits monitoring threshold maintained at 24% RTP, therefore OPRM armed region is unaffected in % RTP
All other APRM, OPRM, and RBM setpoints unchanged in % RTP
Other modification impacts
Plant computer changes for MUR are implemented concurrently with plant computer changes for PRNM
Cyber Security LEFM is Level 3 and communicates with the plant computer No impact to PRNM cyber security controls 8
MUR HARDWARE MODIFICATIONS MUR HARDWARE MODIFICATIONS
High Pressure Turbine (HPT)
Maintain flow margin with HPT modifications to increase flow area
Ultrasonic Feedwater (FW) Flow Meter Cameron LEFM CheckPlus System Install single chordal spool piece in 30 inch diameter common FW header, downstream of 6th stage 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 Modes
Proposed 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 MWt until 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.
10 LEFM Mode Maximum Power Level (MWt)
Pre Alden Lab Testing LEFM Uncertainty Pre Alden Lab Testing CheckPlus (Normal) 3902 - 3906 0.37%
Check (Maintenance) 3890 0.69%
Fail 3840 N/A
FOCUS AREA FOCUS AREA
Steam 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 conditions
Preliminary 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 cracking
Moisture 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 performance
Long term inspections of HC steam dryer will continue per NRC approved BWRVIP-139-A guidelines 11
SCHEDULE SCHEDULE Pre-submittal Meeting December 2016 LAR submittal Early 2nd QTR 2017 Design Change Package Issued June 2017 Requested NRC approval March 2018 LEFM installation April 2018 Implementation April 2018 12