ML15286A056: Difference between revisions

From kanterella
Jump to navigation Jump to search
(Created page by program invented by StriderTol)
(Created page by program invented by StriderTol)
 
Line 29: Line 29:


J f
J f
Exelon Nuclear - Nuclear Fuels                                                Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report CORE OPERATING LIMIT REPORT FOR NINE MILE POINT UNIT 2 CYCLE 15 Prepared by:                                                                              Date: 8/27/2015 ChadrButtrnNFPreparRveer
Exelon Nuclear - Nuclear Fuels                                                Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report CORE OPERATING LIMIT REPORT FOR NINE MILE POINT UNIT 2 CYCLE 15 Prepared by:                                                                              Date: 8/27/2015 ChadrButtrnNFPreparRveer Reviewed by:                                                                                  Dt:8/28/2015 Robert Potter - NF Peer Reviewer Date: 8/31/2015 Reviewed by Mike Holmes - Independent Reviewer Reviewed by                                                                                Date: 8/31/2015 David Knepper - ESA Independent Reviewer Reviewed by                                                                                Date:_8/28/15 John Darweesh - RE Reviewer Reviewed by                                                                                Date:_8/31//2015 Robert Close - Station Supplemental Reviewer Approved by                                                                                Date:    9/1/2015 J--J S/James Tusar    -  Senior BWR Design Manager SQR by:__                                                                                Date: 9/1/2015 Gerry Kahn  -  Station Qualified Reviewer Page 1 of 21
                                                              -
Reviewed by:                                                                                  Dt:8/28/2015 Robert Potter - NF Peer Reviewer Date: 8/31/2015 Reviewed by Mike Holmes - Independent Reviewer Reviewed by                                                                                Date: 8/31/2015 David Knepper - ESA Independent Reviewer Reviewed by                                                                                Date:_8/28/15 John Darweesh - RE Reviewer Reviewed by                                                                                Date:_8/31//2015 Robert Close - Station Supplemental Reviewer Approved by                                                                                Date:    9/1/2015 J--J S/James Tusar    -  Senior BWR Design Manager SQR by:__                                                                                Date: 9/1/2015 Gerry Kahn  -  Station Qualified Reviewer Page 1 of 21


Exelon Nuclear - Nuclear Fuels                    Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table of Contents Section                                                    Page Number Revision History                                                  3 List of Tables                                                    4 Terms and Definitions                                              5 General Information                                                7 MAPLHGR Limits                                                    8 MCPR Limits                                                        9 LHGR Limits                                                        11 Rod Block Monitor Setpoints                                        12 Turbine Bypass Valve Parameters                                    13 Modes of Operation                                                13 Stability Protection                                              14 Power/Flow Operating Map                                          15 Methodology                                                        15 References                                                        16 Appendix A                                                        18 Appendix B                                                        20 Page 2 of 21
Exelon Nuclear - Nuclear Fuels                    Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table of Contents Section                                                    Page Number Revision History                                                  3 List of Tables                                                    4 Terms and Definitions                                              5 General Information                                                7 MAPLHGR Limits                                                    8 MCPR Limits                                                        9 LHGR Limits                                                        11 Rod Block Monitor Setpoints                                        12 Turbine Bypass Valve Parameters                                    13 Modes of Operation                                                13 Stability Protection                                              14 Power/Flow Operating Map                                          15 Methodology                                                        15 References                                                        16 Appendix A                                                        18 Appendix B                                                        20 Page 2 of 21
Line 159: Line 157:
Endpoint            Power [% of rated] .Flow [% of rated]                                      Definition Al                        69.1                      43.6                          Scram Region Boundary, HFCL B1                        39.7                      29.5                      Scram Region Boundary, NCL A2                        64.5                      50.0                          Controlled Entry Region
Endpoint            Power [% of rated] .Flow [% of rated]                                      Definition Al                        69.1                      43.6                          Scram Region Boundary, HFCL B1                        39.7                      29.5                      Scram Region Boundary, NCL A2                        64.5                      50.0                          Controlled Entry Region
______________Boundary,_HFCL B2                        27.5                      28.9                          Controlled Entry Region Boundary, NCL A3                        89.9                      71.4                          BSP Boundary Intercept, HFCL B3                          74.0                      55.0                          BSP Boundary Intercept, MELLLA+ Boundary Minimum
______________Boundary,_HFCL B2                        27.5                      28.9                          Controlled Entry Region Boundary, NCL A3                        89.9                      71.4                          BSP Boundary Intercept, HFCL B3                          74.0                      55.0                          BSP Boundary Intercept, MELLLA+ Boundary Minimum
____ ___ ___
_________
___ _ _  ___  ___      ___      ___Flow Page 14 of 21
___ _ _  ___  ___      ___      ___Flow Page 14 of 21


Line 231: Line 227:


J f
J f
Exelon Nuclear - Nuclear Fuels                                                Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report CORE OPERATING LIMIT REPORT FOR NINE MILE POINT UNIT 2 CYCLE 15 Prepared by:                                                                              Date: 8/27/2015 ChadrButtrnNFPreparRveer
Exelon Nuclear - Nuclear Fuels                                                Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report CORE OPERATING LIMIT REPORT FOR NINE MILE POINT UNIT 2 CYCLE 15 Prepared by:                                                                              Date: 8/27/2015 ChadrButtrnNFPreparRveer Reviewed by:                                                                                  Dt:8/28/2015 Robert Potter - NF Peer Reviewer Date: 8/31/2015 Reviewed by Mike Holmes - Independent Reviewer Reviewed by                                                                                Date: 8/31/2015 David Knepper - ESA Independent Reviewer Reviewed by                                                                                Date:_8/28/15 John Darweesh - RE Reviewer Reviewed by                                                                                Date:_8/31//2015 Robert Close - Station Supplemental Reviewer Approved by                                                                                Date:    9/1/2015 J--J S/James Tusar    -  Senior BWR Design Manager SQR by:__                                                                                Date: 9/1/2015 Gerry Kahn  -  Station Qualified Reviewer Page 1 of 21
                                                              -
Reviewed by:                                                                                  Dt:8/28/2015 Robert Potter - NF Peer Reviewer Date: 8/31/2015 Reviewed by Mike Holmes - Independent Reviewer Reviewed by                                                                                Date: 8/31/2015 David Knepper - ESA Independent Reviewer Reviewed by                                                                                Date:_8/28/15 John Darweesh - RE Reviewer Reviewed by                                                                                Date:_8/31//2015 Robert Close - Station Supplemental Reviewer Approved by                                                                                Date:    9/1/2015 J--J S/James Tusar    -  Senior BWR Design Manager SQR by:__                                                                                Date: 9/1/2015 Gerry Kahn  -  Station Qualified Reviewer Page 1 of 21


Exelon Nuclear - Nuclear Fuels                    Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table of Contents Section                                                    Page Number Revision History                                                  3 List of Tables                                                    4 Terms and Definitions                                              5 General Information                                                7 MAPLHGR Limits                                                    8 MCPR Limits                                                        9 LHGR Limits                                                        11 Rod Block Monitor Setpoints                                        12 Turbine Bypass Valve Parameters                                    13 Modes of Operation                                                13 Stability Protection                                              14 Power/Flow Operating Map                                          15 Methodology                                                        15 References                                                        16 Appendix A                                                        18 Appendix B                                                        20 Page 2 of 21
Exelon Nuclear - Nuclear Fuels                    Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table of Contents Section                                                    Page Number Revision History                                                  3 List of Tables                                                    4 Terms and Definitions                                              5 General Information                                                7 MAPLHGR Limits                                                    8 MCPR Limits                                                        9 LHGR Limits                                                        11 Rod Block Monitor Setpoints                                        12 Turbine Bypass Valve Parameters                                    13 Modes of Operation                                                13 Stability Protection                                              14 Power/Flow Operating Map                                          15 Methodology                                                        15 References                                                        16 Appendix A                                                        18 Appendix B                                                        20 Page 2 of 21
Line 361: Line 355:
Endpoint            Power [% of rated] .Flow [% of rated]                                      Definition Al                        69.1                      43.6                          Scram Region Boundary, HFCL B1                        39.7                      29.5                      Scram Region Boundary, NCL A2                        64.5                      50.0                          Controlled Entry Region
Endpoint            Power [% of rated] .Flow [% of rated]                                      Definition Al                        69.1                      43.6                          Scram Region Boundary, HFCL B1                        39.7                      29.5                      Scram Region Boundary, NCL A2                        64.5                      50.0                          Controlled Entry Region
______________Boundary,_HFCL B2                        27.5                      28.9                          Controlled Entry Region Boundary, NCL A3                        89.9                      71.4                          BSP Boundary Intercept, HFCL B3                          74.0                      55.0                          BSP Boundary Intercept, MELLLA+ Boundary Minimum
______________Boundary,_HFCL B2                        27.5                      28.9                          Controlled Entry Region Boundary, NCL A3                        89.9                      71.4                          BSP Boundary Intercept, HFCL B3                          74.0                      55.0                          BSP Boundary Intercept, MELLLA+ Boundary Minimum
____ ___ ___
_________
___ _ _  ___  ___      ___      ___Flow Page 14 of 21
___ _ _  ___  ___      ___      ___Flow Page 14 of 21


Latest revision as of 08:31, 5 February 2020

Core Operating Limits Report for Cycle 15
ML15286A056
Person / Time
Site: Nine Mile Point Constellation icon.png
Issue date: 10/07/2015
From: Moore D
Exelon Generation Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
NMP2L 2598
Download: ML15286A056 (23)
v • d • e


Text

~Exeton Generation Technical Specification 5.6.5 NMP2L 2598 October 7, 2015 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-001 Nine Mile Point Nuclear Station, Unit 2 Renewed Facility Operating License No. NPF-69 NRC Docket No. 50-410

Subject:

Core Operating Limits Report Enclosed is a copy of the Core Operating Limits Report, Cycle 15 for Nine Mile Point Unit 2 (NMP2). The COLR has been revised as a result of MELLLA+ implementation and is being submitted pursuant to NMP2 Technical Specification 5.6.5.d.

Should you have any questions regarding the information in this submittal, please contact me at (315) 349-5219.

Sincerely, Dennis M. Moore, Site Regulatory Assurance Manager, Nine Mile Point Nuclear Station Exelon Generation Company, LLC

Enclosure:

Core Operating Limits Report for Nine Mile Point Unit 2 Cycle 15 cc: NRC Regional Administrator, Region I NRC Project Manager NRC Senior Resident Inspector 4ocf

Enclosure Core Operating Limits Report For Nine Mile Point Unit 2 Cycle 15

J f

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report CORE OPERATING LIMIT REPORT FOR NINE MILE POINT UNIT 2 CYCLE 15 Prepared by: Date: 8/27/2015 ChadrButtrnNFPreparRveer Reviewed by: Dt:8/28/2015 Robert Potter - NF Peer Reviewer Date: 8/31/2015 Reviewed by Mike Holmes - Independent Reviewer Reviewed by Date: 8/31/2015 David Knepper - ESA Independent Reviewer Reviewed by Date:_8/28/15 John Darweesh - RE Reviewer Reviewed by Date:_8/31//2015 Robert Close - Station Supplemental Reviewer Approved by Date: 9/1/2015 J--J S/James Tusar - Senior BWR Design Manager SQR by:__ Date: 9/1/2015 Gerry Kahn - Station Qualified Reviewer Page 1 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table of Contents Section Page Number Revision History 3 List of Tables 4 Terms and Definitions 5 General Information 7 MAPLHGR Limits 8 MCPR Limits 9 LHGR Limits 11 Rod Block Monitor Setpoints 12 Turbine Bypass Valve Parameters 13 Modes of Operation 13 Stability Protection 14 Power/Flow Operating Map 15 Methodology 15 References 16 Appendix A 18 Appendix B 20 Page 2 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Revision History Revision Description Revision I Revised to reflect MELLLA+ Implementation Revision 0 New Issue for Cycle 15 Since this COLR will be the first Nine Mile Point Unit 2 (NMP2) COLR in the Exelon standard formatting and documentation style, it is listed as a new document in records management. This is revising the originally issued NMP2 Cycle 15 (015) COLR.

Page 3 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report List of Tables Table # Table Name Page Table 3-1 MAPLHGR Versus Average Planar Exposure 8 Table 3-2 MAPLHGR SLO Multiplier 8 Table 4-1 Operating Limit Minimum Critical Power Ratio (OLMCPR) 9 Table 4-2 Power Dependent MCPR Limit Adjustments and Multipliers (MCPRp) 10 Table 4-3 Flow Dependent MCPR Limits (MCPRF) for SLO & DLO 10 Table 5-1 LHGR Limits for UO 2 Fuel 11 Table 5-2 LHGR Limits for Gadolinia Rods 11 Table 5-3 Power Dependent LHGR Multiplier LHGRFACp 11 Table 5-4 Flow Dependent LHGR Multiplier LHGRFACF 12 Table 6-1 Rod Block Monitor Setpoints 12 Table 6-2 ARTS RWE Validated MCPR Values 12 Table 7-1 Turbine Bypass Valve Response Time 13 Table 8-1 Modes of Operation 13 Table 9-1 BSP Endpoints for Normal Feedwater Temperature 14 Table 9-2 Automatic BSP Setpoints 15 Page 4 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report 1.0 Terms and Definitions ADSOOS Automatic Depressurization System Out of Service APLHGR Average Planar Linear Heat Generation Rate APRM Average Power Range Monitor ARTS APRM and RBM Technical Specification Analysis BPV Bypass Valve BSP Backup Stability Protection DLO Dual Loop Operation DSS-CD Detect and Suppress Solution - Confirmation Density EGOS Emergency Gore Cooling System EIS Equipment In Service EL LLA Extended Load Line Limit Analysis EGOC End of Cycle Equipment Out of Service EOR End of Rated. The cycle exposure at which reactor power is equal to 3988 MWth with recirculation flow equal to 100% rated, all control blades fully withdrawn, and equilibrium xenon.

FWHOOS Feedwater Heater(s) Out of Service GEH General Electric-Hitachi GNF Global Nuclear Fuel GPM Gallons Per Minute HFCL High Flow Control Line HTSP High Trip Set Point (regarding RBM)

ICF Increased Gore Flow INOP Inoperable ITSP Intermediate Set Point (regarding RBM)

GLMCPR Multiplier LCOG Limiting Condition for Operation LHGR Linear Heat Generation Rate LHGRFACF ARTS LHGR thermal limit flow dependent adjustments and multipliers LHGRFAOp ARTS LHGR thermal limit power dependent adjustments and multipliers LTSP Low Trip Set Point (regarding RBM)

Page 5 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report MAPFACF Off-rated flow dependent MAPLHGR multiplier MAPFACp Off-rated power dependent MAPLHGR multiplier MAPLHGR Maximum Average Planar Linear Heat Generation Rate MCPR Minimum Critical Power Ratio MCPRF ARTS MCPR thermal limit flow dependent adjustments and multipliers MCPRp ARTS MCPR thermal limit power dependent adjustments and multipliers MELLLA Maximum Extended Load Line Limit Analysis MELLLA+ Maximum Extended Load Line Limit Analysis Plus MSIVOOS Main Steam Isolation Valve Out of Service NCL Natural Circulation Line NRC Nuclear Regulatory Commission OLMCPR Operating Limit MCPR OPRM Oscillation Power Range Monitor PROOS Pressure Regulator Out of Service RDF Recirculation Drive Flow RPTOOS Recirculation Pump Trip Out of Service; also known as EOC-RPT RTP Rated Thermal Power RBM Rod Block Monitor RWE Rod Withdraw Error SLMCPR Safety Limit MCPR SLO Single Loop Operation SRVOOS Safety Relief Valve Out of Service TBVOOS Turbine Bypass Valve Out of Service TS Technical Specification Page 6 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2. Rev. 0 Core Operating Limits Report 2.0 General Information This report is prepared in accordance with Technical Specification 5.6.5 of Reference 1.

Power and flow dependent limits are listed for various power and flow levels. Linear interpolation is to be used for intermediate values.

This report provides the values of the power distribution limits, control rod withdraw block instrumentation setpoints and stability protection setpoints for Nine Mile Point Unit 2 Cycle 15.

OPERATING LIMIT TECHNICAL SPECIFICATION REQUIREMENTS Operatinqi Limit Requirement APLHGR Technical Specification LCO 3.2.1 MCPR Technical Specification LCO 3.2.2 LHGR Technical Specification LCO 3.2.3 This report provides the following cycle-specific parameter limits for Nine Mile Point Unit 2 CYCLE 15 (RELOAD 14):

  • Maximum Average Planar Linear Heat Generation Rate (MAPLHGR)
  • Operating Limit Minimum Critical Power Ratio (OLMCPR)
  • ARTS MCPR thermal limit adjustments and multipliers
  • Single Loop Operation (SLO) MCPR adjustment
  • Linear Heat Generation Rate (LHGR)
  • Single Loop Operation (SLO) LHGR multipliers
  • Rod Block Monitor (RBM) Analytical Limits, Allowable Values and MCPR Limits
  • Backup Stability Protection Parameters Per TS 5.6.5, these values have been determined using NRC-approved methodology and are established such that all applicable limits of the plant safety analysis are met. The limits specified in this COLR support both DLO and SLO as required by TS LCO 3.4.1 and Main Turbine Bypass System inoperable as required by TS LCO 3.7.5.

The "BASE" thermal limit values shown in tables are for normal, equipment-in-service (EIS) two loop operation. Analysis supports 2 SRVOOS and ICF for operational flexibility.

The data presented in this report is valid for all licensed operating domains on the operating map, including (Reference 2):

Page 7 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report

  • Maximum Extended Load Line Limit Analysis Plus to a minimum core flow of 85% of rated.
  • Increased Core Flow up to 105% rated.

Note that no revision bars are used as this is a complete rewrite.

3.0 MAPLHGR Limits KW The Maximum Average Planar Linear Heat Generation Rate limits, in -*t obtained from the ECCS analysis are provided in Table 3-1. The limiting MAPLHGR value for the most limiting lattice of each fuel type as a function of exposure is given. Since NMP2 Cycle 15 employs solely GEl4 fuel, these values are applicable to all the bundles in the NMP2C15 core. For SLO, a multiplier is used as shown in Table 3-2.

Table 3-1 MAPLHGR Versus Average Planar Exposure All Fuel Types (Reference 2 - Table 16.3-1 )

Average Planar Exposure [GWD/ST] MAPLHGR Limit [KW/ft]

0.00 12.82 14.51 12.82 19.13 12.82 57.61 8.00 63.50 5.00 Table 3-2 MAPLHGR SLO Multiplier All Fuel Types (Reference 2 - Table 16.3-2)

Fuel Type SLO Multiplier GE14C 0.78 Note that per TS LCO 3.4.1 .d, Single Loop Operation in the MELLLA or MELLLA+

domains is prohibited.

The MAPLHGR multipliers, MAPFACp and MAPFACF, are set to unity for all power and flow conditions per Reference 2 Section 16.

Page 8 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report 4.0 MCPR Limits The Operating Limit MCPRs listed in Table 4-1 cover all conditions listed in Section 8.0, Modes of Operation. ARTS provides for power and flow dependent thermal limits adjustments, which allow for a more reliable administration of the MCPR thermal limit.

Note that SLO and DLO OLMCPR values are identical. The OLMCPRs for PROOS, ADSOOS, MSIVOOS, and ADSOOS+MSIVOOS are the same as the BASE OLMCPRs.

Control rod scram time verification is required as per TS 3.1 .4, "Control Rod Scram Times". Tau (T), a measure of scram time performance to notch position 39 throughout the cycle, is determined based on the cumulative scram time test results. The calculation of Tau shall be performed in accordance with site procedures. Linear interpolation shall be used to calculate the OLMCPR value if Tau is between 0.0 (Tau Option B) and 1 .0 (Tau Option A). Tau is defined as:

Tare -- T TA -- TB Where: TA = 0.866 seconds TB =0.672 + 1.65 N1 0.016 seconds Tae = NiT* seconds n is the number of surveillance tests performed in the cycle; N1 is the number of active control rods measured in surveillance test i; N1 is the total number of active rods measured; T1 is the average scram time to notch 39 for rods in surveillance test i.

Table 4-1 Operating Limit Minimum Critical Power Ratio (OLMCPR)

All Fuel Types (Reference 2 - Section 11 )

EQOS Combination SCRAM Time Cycle Exposure Option <EOR-2816 MWD/ST >EOR-2816 MWD/ST BASE A 1.65 1.66 B 1.41 1.42 BASE SLO A 1.65 1.66 B 1.41 1.42 TBVOOS A 1.66 1.66 B 1.44 1.44 TBVOOS SLO A 1.66 1.66 B 1.44 1.44 RPTOOS A 1.75 1.81 B 1.42 1.48 RPTOOS SLO A 1.75 1.81 B 1.42 1.48 Page 9 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table 4-2 Power Dependent MCPR Limit Adjustments and Multipliers (MCPRp)

All Fuel Types (Reference 2 - Appendix 0, Reference 3 - Section 4.3)

Core Core Thermal Power [% of ratedi EOOS Cornbi nation Flow [%

of 0 23 J<26 Operating Limit

[_>26 <5SI>.5 I5 60I 85 1<901_>90 Operating Limit MCPR Multiplier (Kp) 100 rated] MCPR BASE >75 1*

1511 1.336 1.193 1.150 1.056 1.000

<75 2.52 2.52 2.43 ______

BASESLO >75 1.511 1.336 1.193 1.150 1.056 1.000

<75 2.52 2.52 2.43 __

RPTOOS >7 1*

1511 1.336 1.193 1.150 1.062 1.000

  • 75 2.52 2.52 2.43___

RPTOOS >7

  • 1.511 1.336 1.193 1.150 1.062 1.000 SLO <75 2.52 2.52 2.43 ______

TBVOOS >7 1.511 1.336 1.193 1.150 1.056 1.000

<75 3.33 3.33 3.06 ___

TBVOOS >75 1.000 SLO 1.511 1.336 1.193 1 .150 1.056

<75 3.33 3.33 3.06 PROOS PROOS >75

<75

  • 2.52 2.52 2.43 .1__

1.122 1.038 1.000 PROOS SLO >71.1 1.122 1.038 1.000

__________ <75 2.52 2.52 2.43 ___

ARTS power dependent thermal limits have been confirmed for operation with Equipment In-Service, Turbine Bypass Valves Out-Of-Service (TBVOOS), Recirculation Pump Trip Out-Of-Service (RPTOOS) and Pressure Regulator Out-Of-Service (PROOS). The Kp/MCPRp and LHGRFACp thermal limits applicable to the Equipment In-Service, TBVOOS and RPTOOS conditions are documented in Reference 3. The Kp/MCPRn and LHGRFACp thermal limits applicable to the PROOS condition are documented in References 3 and 4.

Table 4-3 Flow Dependent MCPR Limits (MCPRF) for SLO & DLO All Fuel Types (Reference 2 - Appendix D)

Flow [% rated] MCPRF Limit 0.0 1.91 30.0 1.69 87.3 1.27 112.0 1.27 Page 10 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2. Rev. 0 Core Operating Limits Report 5.0 LHGR Limits The LHGR limit is the product of the exposure dependent LHGR limit and the minimum of the LHGRFACp or the LHGRFACF.

Table 5-1 LHGR Limits for UO 2 Fuel (Reference 5, Reference 6 - Table D2)

Fuel Type LHGR Limit [KW/ft]

GE14C See Reference 6 - Table D2 Table 5-2 LHGR Limits for Gadolinia Rods (Reference 5, Reference 6 - Table D4)

Fuel Type LHGR Limit [KW/ft]

GE14C I See Reference 6 -Table D4 Table 5-3 Power Dependent LHGR Multiplier LHGRFACp All Fuels Types eference 2 -Appendix D, Reference 4 -Section 4, Core Thermal Power [% of ratei Page 11 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table 5-4 Flow Dependent LHGR Multiplier LHGRFACF All Fuel Types and Modes of Operation

__________ Reference 2 - Appendix D)

EOOS____Core Flow [% of rated]

EQS0 30 52.8 85 112 Condition LHGRFACF Multiplier DLO 0.420 0.625 [;;Ž< 1.000 1.000 SLO 0.420 0.625 0.780 0.780 0.780 6.0 Rod Block Monitor Setpoints Per Technical Specifications 3.3.2.1, the RBM instrumentation channels will be operable with the allowable values set to the values shown in Table 6-1. The values given in Table 6-1 are unfiltered; these unfiltered values are applicable as the time filter constant is set to zero. (Reference 9 - Table 5B, Reference 4 - Attachment 1 Table 4-5). The RBM operability requirements have been evaluated and shown to be sufficient to ensure that the SLMCPR and cladding 1% plastic strain criteria will not be exceeded in the event of a Rod Withdraw Error.

Table 6-1 Rod Block Monitor Setpoints' (Reference 2 - Section 10, Reference 7 - Section 5.1.3, Reference 8 - Section 4, Reference 10 - Section 3)

Power Level Allowable Value Nominal Trip Setpoint Analytical Limit LTSP 124.6% 124.2% 127.0%

ITSP 119.6% 119.2% 122.0%

HTSP 114.6% 114.2% 117.0%

INOP N/A N/A N/A The ARTS RWE analysis validated the MCPR values in Table 6-2 below for use in Cycle 15. The RWE MCPR values have been analyzed at discrete setpoint values and unblocked (continuous withdraw) conditions. The most limiting RBM OLMCPR of 1 .38 is still less than minimum cycle OLMCPRs.

Table 6-2 ARTS RWE Validated MCPR Values (Reference 2 - Section 10)

Power Level [% Rated] MCPR

<90% >1.70

>90% ->1.40

' Values given are unfiltered; for filtered values see Reference 10.

Page 12 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2. Rev. 0 Core Operating Limits Report 7.0 Turbine Bypass Valve Parameters Per Technical Specification LCO 3.7.5, whenever the reactor power is at or above 23%

the main turbine bypass system shall be operable or the plant must operate with the TBVOOS penalties previously stated. The definition of operable is given in Table 7-1 be low.

Table 7-1 Turbine Bypass Valve Response Time (Reference 11 - Section 2.6)

Event Response Time [sec]

Total Response Time Of BPV (80% of 03 ratedBPV flow) __________3 ________

Maximum Bypass Valve Delay From Event Initiation To Start Of BPV Opening 01 8.0 Modes of Operation Table 8-1 Modes of Operation (Reference 2, Reference 12 - Table 15.0-6)

Options2 Allowed Operating Region BASE Yes BASE SLO Yes TBVOOS Yes TBVOOS SLO Yes RPTOOS Yes RPTOOS SLO Yes PROOS Yes MSIVOOS Yes MSIVOOS SLO Yes ADSOOS Yes ADSOOS SLO Yes MSIVOOS + ADSOOS Yes MSIVOOS + ADSOOS SLO Yes For Main Steam Isolation Valve (MSIV) Out of Service, only one MSIV may be inoperable and, per Reference 14 - Section 15.22.0, reactor power must be maintained

< 75% rated power.

SThe EOOS Options listed are for Option A or Option B Page 13 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Note that there are no thermal limit penalties or differences for operating with up to two Safety Relief Valves Out of Service (SRVOOS) and all conditions also support 2 SRVOOS.

There are no thermal limit penalties or differences for operating with up to two ADS valves out of service and all conditions also support 2 ADSOOS.

Maximum power in SLO operation is restricted by two parameters, namely recirculation flow and rod line. The maximum allowable SLO recirculation drive flow is 41,800 GPM due to recirculation piping vibration limitations and the maximum SLO rod line is 89%

(original ELLLA boundary). These restrictions are also described in the SLO Loop Power-to-Flow Maps (Reference 16). Where these two parameters intersect on the Power-to-Flow Maps restricts SLO maximum power.

Operation with EOC RPTOOS was justified for Nine Mile Point Unit 2 in Reference 13.

There is no formally analyzed option for FWHOOS, however per Reference 7 - Section 1 .2.4 there is a 20°F decrease from the rated temperature within analyzed conditions.

9.0 Stability Protection Per References 15 and 2 the OPRM Upscale Setpoint requirement has been replaced by the DSS-CD solution. The Amplitude Discriminator Setpoint is 1.10 (Reference 2 Section 15.2). Results have been validated with feedwater temperature > 420.5°F in accordance with Reference 7.

Per TS 5.6.5.a.4, the BSP regions and values are as shown below in Table 9-1, and Table 9-2. A graphical representation of these values can be found in Appendix A Table 9-1 BSP Endpoints for Normal Feedwater Temperature (Reference 2 -Table 15-2)

Endpoint Power [% of rated] .Flow [% of rated] Definition Al 69.1 43.6 Scram Region Boundary, HFCL B1 39.7 29.5 Scram Region Boundary, NCL A2 64.5 50.0 Controlled Entry Region

______________Boundary,_HFCL B2 27.5 28.9 Controlled Entry Region Boundary, NCL A3 89.9 71.4 BSP Boundary Intercept, HFCL B3 74.0 55.0 BSP Boundary Intercept, MELLLA+ Boundary Minimum

___ _ _ ___ ___ ___ ___Flow Page 14 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table 9-2 Automatic BSP Setpoints 3

~Reference 2 -Table 15-3)

Parameter Sym bol Value Slope of Automatic BSP APRM flow-biased trip linear segment mBSP-TRIP 1.26 Automatic BSP APRM flow-biased trip setpoint powerPB-TI intercept. Constant Power Line BPRP39.7% RTP for Trip from zero Drive Flow to Flow Breakpoint value.

Automatic BSP APRM flow-biased trip setpoint drive flowWBPTI369RD intercept. Constant Flow Line forWBRRP369RD Trip.__ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Flow Breakpoint value WBSPBREAK 16.4% RDF 10.0 Power/Flow Operating Map See Appendix B for a Power/Flow Map.

11.0 Methodology The analytical methods used to determine the core operating limits shall be those previously reviewed and approved by the Nuclear Regulatory Commission, particularly those described in the following documents:

1. "General Electric Standard Application for Reactor Fuel (GESTAR II)", NEDE-24011-P-A-21, May 2015
2. "General Electric Standard Application for Reactor Fuel (GESTAR II) (Supplement for United States)", NEDE-24011-P-A-21-US, May 2015 SBounding for both DLO and SLO.

Page 15 of21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report 12.0 References

1. "Nine Mile Point Nuclear Station Unit 2 Renewed Facility Operating License", Docket No. 50-410, Renewed License No. NPF-69, Exelon Document.
2. "Supplemental Reload Licensing Report for Nine Mile Point 2 (NMP2) Reload 14 Cycle 15 Extended Power Uprate (EPU)/Maximum Extended Load Line Limit Plus (MELLLA+)", August 2015, Global Nuclear Fuels Document No. 000N0123-SRLR, Revision 3.
3. "Nine Mile Point Nuclear Power Plant, Unit 2, TRACG Implementation for Reload Licensing Transient Analysis (Ti1309)", GEH Document No. 0000-0157-9895-Ri, Rev.

i, October 2013.

4. "Nine Mile Point Nuclear Station Unit 2 ARTS/MELLLA, Task T0900: Transient Analysis", GE Energy Document No. GE-NE-0000-0055-2373-R0, Revision 0, February 2007.
5. "Fuel Bundle Information Report for Nine Mile Point 2 Reload 14 Cycle 15", GNF Document No. 000N0123-FIBR-P Revision 0, December 2013.
6. Letter from B. R. Moore (GNF) to Document Control Desk (NRC),

Subject:

"GEl4 Compliance with Amendment 22 of NEDE-24011i-P-A (GESTAR II), NEDC-32868P, Revision 5, May 2013," GNF Document No. MFN13-028, May 24, 2013.

7. "Safety Analysis Report for Nine Mile Point Unit 2 Maximum Extended Load Line Limit Analysis Plus", GEH Document No. NEDC-33576P Revision 0, October 2013.
8. "Nine Mile Point Nuclear Station Unit 2 APRM/RBM/Technical Specifications/Maximum Extended Load Line Limit Analysis (ARTS/MELLLA)", GE Energy Document No.

NEDC-33286P Revision 0, March 2007.

9. "Revise 22A2843AM", Engineering Change Notice for NSSS161405000 "Design Spec Data Sheet, Neutron Monitoring System", Exelon Document Number 007242, Rev. 1, April 2008.

10."Instrumentation Limits Calculation Constellation Generation Group Nine Mile Point Nuclear Station Unit 2 Rod Block Monitor (NUMAC ARTS-MELLLA)" GEH Document No. 0000-0053-i1006 NMP2 A-M-T506-RBM-Calc-2006 Revision 1, March 2008.

11 ."OPL 3 - Fuel Analysis Parameters", Nine Mile Point Nuclear Station Calculation No.

A10.1-AE-001 Revision 02, October 2003.

12."Nine Mile Point Nuclear Station Unit 2 Updated Safety Analysis Report", U.S. Nuclear Regulatory Commission Docket 50-410 License NPF-69, Revision 20, October 2012, Exelon Document.

13. "Project Task Report, Constellation Energy Nuclear Group, Nine Mile Point Nuclear Station Unit 2 MELLLA+, Task T0900: Transient Analysis", GEH Document No. 0000-0130-0603-R3, Revision 3, July 2013.

14."FRED Nine Mile Point Unit 2 Reload 14 Cycle 15 MELLLA+", Technical Information Letter between Nine Mile Point Nuclear Station and GNF, Revision 4, August 2013.

Page 16 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report

15. "License Amendment Request Pursuant to 10 CFR 50.90: Maximum Extended Load Line Limit Analysis Plus", Nine Mile Point Nuclear Station, Unit 2 Renewed Facility Operating License No. NPF-69 Docket No. 50-410, November 2013.
16. "Power Flow Operating Map 1 Recirculation Loop in Operation", Engineering Change Notice No. ECP-12-000448-CN-043 EM-950B-1 7.01, Revision 0000.00, August 2015, Exelon Document.

Page 17 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Appendix A Page 18 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report NINE MILE POINT 2 000N01I23-SRLR Reload 14 Revision 3 123 -

!M -i anual 9$* 5cr~m *eglen Al Z 73] 1 -

"* 60 J' 63-13 3,

13 20 32 43 513 62 70 93 93 133 113 133 Core Flowv{%)

Figure 22 Manual BSP Regions and BSP Boundary for Normal Feedwater Temperature Operation Page 46 Page 19 of 2l

e

,I Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Appendix B Page 20 of 21

L Exelon Nuclear - Nuclear Fuels Document lD: COLR Nine Mile Point 2. Rev. 0 Core Operating Limits Report NE[X)-33576 REVISION 0 NON-PROPRIETARY INFORMATION -CLASS I (PUBiL[C) 0 10 20 30 40 51) 00 70 00 930 I 1(1 I10 120 130 120 4500 11(1 41(*0, 911 3500 80

70) 23(01~

I-2500 40 1 500 30 20 5(11) 10 60 Core Flow.F/%

Figure I-I Power/Flow Operating Map for MELLLA+

1-14 Page 21 of 21

~Exeton Generation Technical Specification 5.6.5 NMP2L 2598 October 7, 2015 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-001 Nine Mile Point Nuclear Station, Unit 2 Renewed Facility Operating License No. NPF-69 NRC Docket No. 50-410

Subject:

Core Operating Limits Report Enclosed is a copy of the Core Operating Limits Report, Cycle 15 for Nine Mile Point Unit 2 (NMP2). The COLR has been revised as a result of MELLLA+ implementation and is being submitted pursuant to NMP2 Technical Specification 5.6.5.d.

Should you have any questions regarding the information in this submittal, please contact me at (315) 349-5219.

Sincerely, Dennis M. Moore, Site Regulatory Assurance Manager, Nine Mile Point Nuclear Station Exelon Generation Company, LLC

Enclosure:

Core Operating Limits Report for Nine Mile Point Unit 2 Cycle 15 cc: NRC Regional Administrator, Region I NRC Project Manager NRC Senior Resident Inspector 4ocf

Enclosure Core Operating Limits Report For Nine Mile Point Unit 2 Cycle 15

J f

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report CORE OPERATING LIMIT REPORT FOR NINE MILE POINT UNIT 2 CYCLE 15 Prepared by: Date: 8/27/2015 ChadrButtrnNFPreparRveer Reviewed by: Dt:8/28/2015 Robert Potter - NF Peer Reviewer Date: 8/31/2015 Reviewed by Mike Holmes - Independent Reviewer Reviewed by Date: 8/31/2015 David Knepper - ESA Independent Reviewer Reviewed by Date:_8/28/15 John Darweesh - RE Reviewer Reviewed by Date:_8/31//2015 Robert Close - Station Supplemental Reviewer Approved by Date: 9/1/2015 J--J S/James Tusar - Senior BWR Design Manager SQR by:__ Date: 9/1/2015 Gerry Kahn - Station Qualified Reviewer Page 1 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table of Contents Section Page Number Revision History 3 List of Tables 4 Terms and Definitions 5 General Information 7 MAPLHGR Limits 8 MCPR Limits 9 LHGR Limits 11 Rod Block Monitor Setpoints 12 Turbine Bypass Valve Parameters 13 Modes of Operation 13 Stability Protection 14 Power/Flow Operating Map 15 Methodology 15 References 16 Appendix A 18 Appendix B 20 Page 2 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Revision History Revision Description Revision I Revised to reflect MELLLA+ Implementation Revision 0 New Issue for Cycle 15 Since this COLR will be the first Nine Mile Point Unit 2 (NMP2) COLR in the Exelon standard formatting and documentation style, it is listed as a new document in records management. This is revising the originally issued NMP2 Cycle 15 (015) COLR.

Page 3 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report List of Tables Table # Table Name Page Table 3-1 MAPLHGR Versus Average Planar Exposure 8 Table 3-2 MAPLHGR SLO Multiplier 8 Table 4-1 Operating Limit Minimum Critical Power Ratio (OLMCPR) 9 Table 4-2 Power Dependent MCPR Limit Adjustments and Multipliers (MCPRp) 10 Table 4-3 Flow Dependent MCPR Limits (MCPRF) for SLO & DLO 10 Table 5-1 LHGR Limits for UO 2 Fuel 11 Table 5-2 LHGR Limits for Gadolinia Rods 11 Table 5-3 Power Dependent LHGR Multiplier LHGRFACp 11 Table 5-4 Flow Dependent LHGR Multiplier LHGRFACF 12 Table 6-1 Rod Block Monitor Setpoints 12 Table 6-2 ARTS RWE Validated MCPR Values 12 Table 7-1 Turbine Bypass Valve Response Time 13 Table 8-1 Modes of Operation 13 Table 9-1 BSP Endpoints for Normal Feedwater Temperature 14 Table 9-2 Automatic BSP Setpoints 15 Page 4 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report 1.0 Terms and Definitions ADSOOS Automatic Depressurization System Out of Service APLHGR Average Planar Linear Heat Generation Rate APRM Average Power Range Monitor ARTS APRM and RBM Technical Specification Analysis BPV Bypass Valve BSP Backup Stability Protection DLO Dual Loop Operation DSS-CD Detect and Suppress Solution - Confirmation Density EGOS Emergency Gore Cooling System EIS Equipment In Service EL LLA Extended Load Line Limit Analysis EGOC End of Cycle Equipment Out of Service EOR End of Rated. The cycle exposure at which reactor power is equal to 3988 MWth with recirculation flow equal to 100% rated, all control blades fully withdrawn, and equilibrium xenon.

FWHOOS Feedwater Heater(s) Out of Service GEH General Electric-Hitachi GNF Global Nuclear Fuel GPM Gallons Per Minute HFCL High Flow Control Line HTSP High Trip Set Point (regarding RBM)

ICF Increased Gore Flow INOP Inoperable ITSP Intermediate Set Point (regarding RBM)

GLMCPR Multiplier LCOG Limiting Condition for Operation LHGR Linear Heat Generation Rate LHGRFACF ARTS LHGR thermal limit flow dependent adjustments and multipliers LHGRFAOp ARTS LHGR thermal limit power dependent adjustments and multipliers LTSP Low Trip Set Point (regarding RBM)

Page 5 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report MAPFACF Off-rated flow dependent MAPLHGR multiplier MAPFACp Off-rated power dependent MAPLHGR multiplier MAPLHGR Maximum Average Planar Linear Heat Generation Rate MCPR Minimum Critical Power Ratio MCPRF ARTS MCPR thermal limit flow dependent adjustments and multipliers MCPRp ARTS MCPR thermal limit power dependent adjustments and multipliers MELLLA Maximum Extended Load Line Limit Analysis MELLLA+ Maximum Extended Load Line Limit Analysis Plus MSIVOOS Main Steam Isolation Valve Out of Service NCL Natural Circulation Line NRC Nuclear Regulatory Commission OLMCPR Operating Limit MCPR OPRM Oscillation Power Range Monitor PROOS Pressure Regulator Out of Service RDF Recirculation Drive Flow RPTOOS Recirculation Pump Trip Out of Service; also known as EOC-RPT RTP Rated Thermal Power RBM Rod Block Monitor RWE Rod Withdraw Error SLMCPR Safety Limit MCPR SLO Single Loop Operation SRVOOS Safety Relief Valve Out of Service TBVOOS Turbine Bypass Valve Out of Service TS Technical Specification Page 6 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2. Rev. 0 Core Operating Limits Report 2.0 General Information This report is prepared in accordance with Technical Specification 5.6.5 of Reference 1.

Power and flow dependent limits are listed for various power and flow levels. Linear interpolation is to be used for intermediate values.

This report provides the values of the power distribution limits, control rod withdraw block instrumentation setpoints and stability protection setpoints for Nine Mile Point Unit 2 Cycle 15.

OPERATING LIMIT TECHNICAL SPECIFICATION REQUIREMENTS Operatinqi Limit Requirement APLHGR Technical Specification LCO 3.2.1 MCPR Technical Specification LCO 3.2.2 LHGR Technical Specification LCO 3.2.3 This report provides the following cycle-specific parameter limits for Nine Mile Point Unit 2 CYCLE 15 (RELOAD 14):

  • Maximum Average Planar Linear Heat Generation Rate (MAPLHGR)
  • Operating Limit Minimum Critical Power Ratio (OLMCPR)
  • ARTS MCPR thermal limit adjustments and multipliers
  • Single Loop Operation (SLO) MCPR adjustment
  • Linear Heat Generation Rate (LHGR)
  • Single Loop Operation (SLO) LHGR multipliers
  • Rod Block Monitor (RBM) Analytical Limits, Allowable Values and MCPR Limits
  • Backup Stability Protection Parameters Per TS 5.6.5, these values have been determined using NRC-approved methodology and are established such that all applicable limits of the plant safety analysis are met. The limits specified in this COLR support both DLO and SLO as required by TS LCO 3.4.1 and Main Turbine Bypass System inoperable as required by TS LCO 3.7.5.

The "BASE" thermal limit values shown in tables are for normal, equipment-in-service (EIS) two loop operation. Analysis supports 2 SRVOOS and ICF for operational flexibility.

The data presented in this report is valid for all licensed operating domains on the operating map, including (Reference 2):

Page 7 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report

  • Maximum Extended Load Line Limit Analysis Plus to a minimum core flow of 85% of rated.
  • Increased Core Flow up to 105% rated.

Note that no revision bars are used as this is a complete rewrite.

3.0 MAPLHGR Limits KW The Maximum Average Planar Linear Heat Generation Rate limits, in -*t obtained from the ECCS analysis are provided in Table 3-1. The limiting MAPLHGR value for the most limiting lattice of each fuel type as a function of exposure is given. Since NMP2 Cycle 15 employs solely GEl4 fuel, these values are applicable to all the bundles in the NMP2C15 core. For SLO, a multiplier is used as shown in Table 3-2.

Table 3-1 MAPLHGR Versus Average Planar Exposure All Fuel Types (Reference 2 - Table 16.3-1 )

Average Planar Exposure [GWD/ST] MAPLHGR Limit [KW/ft]

0.00 12.82 14.51 12.82 19.13 12.82 57.61 8.00 63.50 5.00 Table 3-2 MAPLHGR SLO Multiplier All Fuel Types (Reference 2 - Table 16.3-2)

Fuel Type SLO Multiplier GE14C 0.78 Note that per TS LCO 3.4.1 .d, Single Loop Operation in the MELLLA or MELLLA+

domains is prohibited.

The MAPLHGR multipliers, MAPFACp and MAPFACF, are set to unity for all power and flow conditions per Reference 2 Section 16.

Page 8 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report 4.0 MCPR Limits The Operating Limit MCPRs listed in Table 4-1 cover all conditions listed in Section 8.0, Modes of Operation. ARTS provides for power and flow dependent thermal limits adjustments, which allow for a more reliable administration of the MCPR thermal limit.

Note that SLO and DLO OLMCPR values are identical. The OLMCPRs for PROOS, ADSOOS, MSIVOOS, and ADSOOS+MSIVOOS are the same as the BASE OLMCPRs.

Control rod scram time verification is required as per TS 3.1 .4, "Control Rod Scram Times". Tau (T), a measure of scram time performance to notch position 39 throughout the cycle, is determined based on the cumulative scram time test results. The calculation of Tau shall be performed in accordance with site procedures. Linear interpolation shall be used to calculate the OLMCPR value if Tau is between 0.0 (Tau Option B) and 1 .0 (Tau Option A). Tau is defined as:

Tare -- T TA -- TB Where: TA = 0.866 seconds TB =0.672 + 1.65 N1 0.016 seconds Tae = NiT* seconds n is the number of surveillance tests performed in the cycle; N1 is the number of active control rods measured in surveillance test i; N1 is the total number of active rods measured; T1 is the average scram time to notch 39 for rods in surveillance test i.

Table 4-1 Operating Limit Minimum Critical Power Ratio (OLMCPR)

All Fuel Types (Reference 2 - Section 11 )

EQOS Combination SCRAM Time Cycle Exposure Option <EOR-2816 MWD/ST >EOR-2816 MWD/ST BASE A 1.65 1.66 B 1.41 1.42 BASE SLO A 1.65 1.66 B 1.41 1.42 TBVOOS A 1.66 1.66 B 1.44 1.44 TBVOOS SLO A 1.66 1.66 B 1.44 1.44 RPTOOS A 1.75 1.81 B 1.42 1.48 RPTOOS SLO A 1.75 1.81 B 1.42 1.48 Page 9 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table 4-2 Power Dependent MCPR Limit Adjustments and Multipliers (MCPRp)

All Fuel Types (Reference 2 - Appendix 0, Reference 3 - Section 4.3)

Core Core Thermal Power [% of ratedi EOOS Cornbi nation Flow [%

of 0 23 J<26 Operating Limit

[_>26 <5SI>.5 I5 60I 85 1<901_>90 Operating Limit MCPR Multiplier (Kp) 100 rated] MCPR BASE >75 1*

1511 1.336 1.193 1.150 1.056 1.000

<75 2.52 2.52 2.43 ______

BASESLO >75 1.511 1.336 1.193 1.150 1.056 1.000

<75 2.52 2.52 2.43 __

RPTOOS >7 1*

1511 1.336 1.193 1.150 1.062 1.000

  • 75 2.52 2.52 2.43___

RPTOOS >7

  • 1.511 1.336 1.193 1.150 1.062 1.000 SLO <75 2.52 2.52 2.43 ______

TBVOOS >7 1.511 1.336 1.193 1.150 1.056 1.000

<75 3.33 3.33 3.06 ___

TBVOOS >75 1.000 SLO 1.511 1.336 1.193 1 .150 1.056

<75 3.33 3.33 3.06 PROOS PROOS >75

<75

  • 2.52 2.52 2.43 .1__

1.122 1.038 1.000 PROOS SLO >71.1 1.122 1.038 1.000

__________ <75 2.52 2.52 2.43 ___

ARTS power dependent thermal limits have been confirmed for operation with Equipment In-Service, Turbine Bypass Valves Out-Of-Service (TBVOOS), Recirculation Pump Trip Out-Of-Service (RPTOOS) and Pressure Regulator Out-Of-Service (PROOS). The Kp/MCPRp and LHGRFACp thermal limits applicable to the Equipment In-Service, TBVOOS and RPTOOS conditions are documented in Reference 3. The Kp/MCPRn and LHGRFACp thermal limits applicable to the PROOS condition are documented in References 3 and 4.

Table 4-3 Flow Dependent MCPR Limits (MCPRF) for SLO & DLO All Fuel Types (Reference 2 - Appendix D)

Flow [% rated] MCPRF Limit 0.0 1.91 30.0 1.69 87.3 1.27 112.0 1.27 Page 10 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2. Rev. 0 Core Operating Limits Report 5.0 LHGR Limits The LHGR limit is the product of the exposure dependent LHGR limit and the minimum of the LHGRFACp or the LHGRFACF.

Table 5-1 LHGR Limits for UO 2 Fuel (Reference 5, Reference 6 - Table D2)

Fuel Type LHGR Limit [KW/ft]

GE14C See Reference 6 - Table D2 Table 5-2 LHGR Limits for Gadolinia Rods (Reference 5, Reference 6 - Table D4)

Fuel Type LHGR Limit [KW/ft]

GE14C I See Reference 6 -Table D4 Table 5-3 Power Dependent LHGR Multiplier LHGRFACp All Fuels Types eference 2 -Appendix D, Reference 4 -Section 4, Core Thermal Power [% of ratei Page 11 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table 5-4 Flow Dependent LHGR Multiplier LHGRFACF All Fuel Types and Modes of Operation

__________ Reference 2 - Appendix D)

EOOS____Core Flow [% of rated]

EQS0 30 52.8 85 112 Condition LHGRFACF Multiplier DLO 0.420 0.625 [;;Ž< 1.000 1.000 SLO 0.420 0.625 0.780 0.780 0.780 6.0 Rod Block Monitor Setpoints Per Technical Specifications 3.3.2.1, the RBM instrumentation channels will be operable with the allowable values set to the values shown in Table 6-1. The values given in Table 6-1 are unfiltered; these unfiltered values are applicable as the time filter constant is set to zero. (Reference 9 - Table 5B, Reference 4 - Attachment 1 Table 4-5). The RBM operability requirements have been evaluated and shown to be sufficient to ensure that the SLMCPR and cladding 1% plastic strain criteria will not be exceeded in the event of a Rod Withdraw Error.

Table 6-1 Rod Block Monitor Setpoints' (Reference 2 - Section 10, Reference 7 - Section 5.1.3, Reference 8 - Section 4, Reference 10 - Section 3)

Power Level Allowable Value Nominal Trip Setpoint Analytical Limit LTSP 124.6% 124.2% 127.0%

ITSP 119.6% 119.2% 122.0%

HTSP 114.6% 114.2% 117.0%

INOP N/A N/A N/A The ARTS RWE analysis validated the MCPR values in Table 6-2 below for use in Cycle 15. The RWE MCPR values have been analyzed at discrete setpoint values and unblocked (continuous withdraw) conditions. The most limiting RBM OLMCPR of 1 .38 is still less than minimum cycle OLMCPRs.

Table 6-2 ARTS RWE Validated MCPR Values (Reference 2 - Section 10)

Power Level [% Rated] MCPR

<90% >1.70

>90% ->1.40

' Values given are unfiltered; for filtered values see Reference 10.

Page 12 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2. Rev. 0 Core Operating Limits Report 7.0 Turbine Bypass Valve Parameters Per Technical Specification LCO 3.7.5, whenever the reactor power is at or above 23%

the main turbine bypass system shall be operable or the plant must operate with the TBVOOS penalties previously stated. The definition of operable is given in Table 7-1 be low.

Table 7-1 Turbine Bypass Valve Response Time (Reference 11 - Section 2.6)

Event Response Time [sec]

Total Response Time Of BPV (80% of 03 ratedBPV flow) __________3 ________

Maximum Bypass Valve Delay From Event Initiation To Start Of BPV Opening 01 8.0 Modes of Operation Table 8-1 Modes of Operation (Reference 2, Reference 12 - Table 15.0-6)

Options2 Allowed Operating Region BASE Yes BASE SLO Yes TBVOOS Yes TBVOOS SLO Yes RPTOOS Yes RPTOOS SLO Yes PROOS Yes MSIVOOS Yes MSIVOOS SLO Yes ADSOOS Yes ADSOOS SLO Yes MSIVOOS + ADSOOS Yes MSIVOOS + ADSOOS SLO Yes For Main Steam Isolation Valve (MSIV) Out of Service, only one MSIV may be inoperable and, per Reference 14 - Section 15.22.0, reactor power must be maintained

< 75% rated power.

SThe EOOS Options listed are for Option A or Option B Page 13 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Note that there are no thermal limit penalties or differences for operating with up to two Safety Relief Valves Out of Service (SRVOOS) and all conditions also support 2 SRVOOS.

There are no thermal limit penalties or differences for operating with up to two ADS valves out of service and all conditions also support 2 ADSOOS.

Maximum power in SLO operation is restricted by two parameters, namely recirculation flow and rod line. The maximum allowable SLO recirculation drive flow is 41,800 GPM due to recirculation piping vibration limitations and the maximum SLO rod line is 89%

(original ELLLA boundary). These restrictions are also described in the SLO Loop Power-to-Flow Maps (Reference 16). Where these two parameters intersect on the Power-to-Flow Maps restricts SLO maximum power.

Operation with EOC RPTOOS was justified for Nine Mile Point Unit 2 in Reference 13.

There is no formally analyzed option for FWHOOS, however per Reference 7 - Section 1 .2.4 there is a 20°F decrease from the rated temperature within analyzed conditions.

9.0 Stability Protection Per References 15 and 2 the OPRM Upscale Setpoint requirement has been replaced by the DSS-CD solution. The Amplitude Discriminator Setpoint is 1.10 (Reference 2 Section 15.2). Results have been validated with feedwater temperature > 420.5°F in accordance with Reference 7.

Per TS 5.6.5.a.4, the BSP regions and values are as shown below in Table 9-1, and Table 9-2. A graphical representation of these values can be found in Appendix A Table 9-1 BSP Endpoints for Normal Feedwater Temperature (Reference 2 -Table 15-2)

Endpoint Power [% of rated] .Flow [% of rated] Definition Al 69.1 43.6 Scram Region Boundary, HFCL B1 39.7 29.5 Scram Region Boundary, NCL A2 64.5 50.0 Controlled Entry Region

______________Boundary,_HFCL B2 27.5 28.9 Controlled Entry Region Boundary, NCL A3 89.9 71.4 BSP Boundary Intercept, HFCL B3 74.0 55.0 BSP Boundary Intercept, MELLLA+ Boundary Minimum

___ _ _ ___ ___ ___ ___Flow Page 14 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Table 9-2 Automatic BSP Setpoints 3

~Reference 2 -Table 15-3)

Parameter Sym bol Value Slope of Automatic BSP APRM flow-biased trip linear segment mBSP-TRIP 1.26 Automatic BSP APRM flow-biased trip setpoint powerPB-TI intercept. Constant Power Line BPRP39.7% RTP for Trip from zero Drive Flow to Flow Breakpoint value.

Automatic BSP APRM flow-biased trip setpoint drive flowWBPTI369RD intercept. Constant Flow Line forWBRRP369RD Trip.__ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Flow Breakpoint value WBSPBREAK 16.4% RDF 10.0 Power/Flow Operating Map See Appendix B for a Power/Flow Map.

11.0 Methodology The analytical methods used to determine the core operating limits shall be those previously reviewed and approved by the Nuclear Regulatory Commission, particularly those described in the following documents:

1. "General Electric Standard Application for Reactor Fuel (GESTAR II)", NEDE-24011-P-A-21, May 2015
2. "General Electric Standard Application for Reactor Fuel (GESTAR II) (Supplement for United States)", NEDE-24011-P-A-21-US, May 2015 SBounding for both DLO and SLO.

Page 15 of21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report 12.0 References

1. "Nine Mile Point Nuclear Station Unit 2 Renewed Facility Operating License", Docket No. 50-410, Renewed License No. NPF-69, Exelon Document.
2. "Supplemental Reload Licensing Report for Nine Mile Point 2 (NMP2) Reload 14 Cycle 15 Extended Power Uprate (EPU)/Maximum Extended Load Line Limit Plus (MELLLA+)", August 2015, Global Nuclear Fuels Document No. 000N0123-SRLR, Revision 3.
3. "Nine Mile Point Nuclear Power Plant, Unit 2, TRACG Implementation for Reload Licensing Transient Analysis (Ti1309)", GEH Document No. 0000-0157-9895-Ri, Rev.

i, October 2013.

4. "Nine Mile Point Nuclear Station Unit 2 ARTS/MELLLA, Task T0900: Transient Analysis", GE Energy Document No. GE-NE-0000-0055-2373-R0, Revision 0, February 2007.
5. "Fuel Bundle Information Report for Nine Mile Point 2 Reload 14 Cycle 15", GNF Document No. 000N0123-FIBR-P Revision 0, December 2013.
6. Letter from B. R. Moore (GNF) to Document Control Desk (NRC),

Subject:

"GEl4 Compliance with Amendment 22 of NEDE-24011i-P-A (GESTAR II), NEDC-32868P, Revision 5, May 2013," GNF Document No. MFN13-028, May 24, 2013.

7. "Safety Analysis Report for Nine Mile Point Unit 2 Maximum Extended Load Line Limit Analysis Plus", GEH Document No. NEDC-33576P Revision 0, October 2013.
8. "Nine Mile Point Nuclear Station Unit 2 APRM/RBM/Technical Specifications/Maximum Extended Load Line Limit Analysis (ARTS/MELLLA)", GE Energy Document No.

NEDC-33286P Revision 0, March 2007.

9. "Revise 22A2843AM", Engineering Change Notice for NSSS161405000 "Design Spec Data Sheet, Neutron Monitoring System", Exelon Document Number 007242, Rev. 1, April 2008.

10."Instrumentation Limits Calculation Constellation Generation Group Nine Mile Point Nuclear Station Unit 2 Rod Block Monitor (NUMAC ARTS-MELLLA)" GEH Document No. 0000-0053-i1006 NMP2 A-M-T506-RBM-Calc-2006 Revision 1, March 2008.

11 ."OPL 3 - Fuel Analysis Parameters", Nine Mile Point Nuclear Station Calculation No.

A10.1-AE-001 Revision 02, October 2003.

12."Nine Mile Point Nuclear Station Unit 2 Updated Safety Analysis Report", U.S. Nuclear Regulatory Commission Docket 50-410 License NPF-69, Revision 20, October 2012, Exelon Document.

13. "Project Task Report, Constellation Energy Nuclear Group, Nine Mile Point Nuclear Station Unit 2 MELLLA+, Task T0900: Transient Analysis", GEH Document No. 0000-0130-0603-R3, Revision 3, July 2013.

14."FRED Nine Mile Point Unit 2 Reload 14 Cycle 15 MELLLA+", Technical Information Letter between Nine Mile Point Nuclear Station and GNF, Revision 4, August 2013.

Page 16 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report

15. "License Amendment Request Pursuant to 10 CFR 50.90: Maximum Extended Load Line Limit Analysis Plus", Nine Mile Point Nuclear Station, Unit 2 Renewed Facility Operating License No. NPF-69 Docket No. 50-410, November 2013.
16. "Power Flow Operating Map 1 Recirculation Loop in Operation", Engineering Change Notice No. ECP-12-000448-CN-043 EM-950B-1 7.01, Revision 0000.00, August 2015, Exelon Document.

Page 17 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Appendix A Page 18 of 21

Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report NINE MILE POINT 2 000N01I23-SRLR Reload 14 Revision 3 123 -

!M -i anual 9$* 5cr~m *eglen Al Z 73] 1 -

"* 60 J' 63-13 3,

13 20 32 43 513 62 70 93 93 133 113 133 Core Flowv{%)

Figure 22 Manual BSP Regions and BSP Boundary for Normal Feedwater Temperature Operation Page 46 Page 19 of 2l

e

,I Exelon Nuclear - Nuclear Fuels Document ID: COLR Nine Mile Point 2, Rev. 0 Core Operating Limits Report Appendix B Page 20 of 21

L Exelon Nuclear - Nuclear Fuels Document lD: COLR Nine Mile Point 2. Rev. 0 Core Operating Limits Report NE[X)-33576 REVISION 0 NON-PROPRIETARY INFORMATION -CLASS I (PUBiL[C) 0 10 20 30 40 51) 00 70 00 930 I 1(1 I10 120 130 120 4500 11(1 41(*0, 911 3500 80

70) 23(01~

I-2500 40 1 500 30 20 5(11) 10 60 Core Flow.F/%

Figure I-I Power/Flow Operating Map for MELLLA+

1-14 Page 21 of 21

Retrieved from "https://kanterella.com/w/index.php?title=ML15286A056&oldid=2446746"