ML14112A436
| ML14112A436 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 04/08/2014 |
| From: | Weber T N Arizona Public Service Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 102-06860-TNW/DHK | |
| Download: ML14112A436 (17) | |
Text
QapsPalo VerdeNuclear Generating Station5801 S. Wintersburg Road102-06860-TNW/DHK
- Tonopah, AZ 85354April 8, 2014ATTN: Document Control DeskU.S. Nuclear Regulatory Commission Washington, DC 20555-0001
Dear Sirs:
Subject:
Palo Verde Nuclear Generating Station (PVNGS)Units 1, 2, and 3Docket Nos. STN 50-528/529/530 Emergency Core Cooling System (ECCS) Performance Evaluation Models, 10 CFR 50.46(a)(3)(ii)
Annual Reportfor Calendar Year 2013Pursuant to 10 CFR 50.46(a)(3)(ii),
Arizona Public Service Company (APS) isproviding a summary of the cumulative effects on calculated peak cladtemperature (PCT) for PVNGS due to changes or errors in ECCS performance evaluation models.There were no changes that affected the large break loss of coolant accident(LOCA) or small break LOCA peak clad temperature (PCT) calculations forPVNGS Units 2 or 3 for calendar year (CY) 2013. There were no errorsidentified for 2013 that affected the large break LOCA or the small breakLOCA calculations for each of the PVNGS units.For Unit 1, the eight AREVA lead test assemblies were removed for operating cycle 18, during 2013. The 4 degree change to PCT that was added for theseassemblies was removed, as Unit 1 has been restored to the configuration assumed in the large break LOCA analysis.
There were no changes thataffected the small break LOCA PCT calculations for Unit 1.Additionally, because PCT is not calculated as part of the post LOCA long-term cooling (LTC) analysis, there are no changes or errors in the LTCmodels that affect PCT.A member of the STARS (Strategic Teaming and Resource Sharing)
Alliance (7Callaway
- Comanche Peak
- Diablo Canyon
- Palo Verde
- Wolf Creek ATTN: Document Control DeskU.S. Nuclear Regulatory Commission Emergency Core Cooling System (ECCS) Performance Evaluation Models10 CFR 50.46(a)(3)(ii)
Annual Report for Calendar Year 2013Page 2The enclosures provide a more detailed discussion of the LOCA analyses in theWestinghouse (formerly Combustion Engineering) models for Pressurized WaterReactors (PWRs) ECCS performance analyses in calendar year 2013 for PVNGS.No commitments are being made to the NRC by this letter.Should you need further information regarding this submittal, H. Kelsey, Licensing Section Leader, at (623) 393-5730.
please contact DavidSincerely,
/1Lb 3 (W- k 1, 4.Thomas N. WeberDepartment Leader, Regulatory AffairsTNW/DHK/hsc Enclosure 1:Enclosure 2:Summary of Cumulative Effects on Calculated Peak CladTemperature (PCT) for PVNGS Due to Changes/Errors inEmergency Core Cooling System (ECCS) Performance Evaluation ModelsWestinghouse Electric Company Letter, Palo Verde NuclearGenerating Station Units 1, 2, and 3, 10 CFR 50.46 AnnualNotification and Reporting for 2013, letter number LTR-TLA 010, dated March 19, 2014cc:M. L. DapasJ. K. RankinA. E. GeorgeM. A. BrownNRC Region IV Regional Administrator NRC NRR Project Manager for PVNGS (electronic and hard copy)NRC NRR Project Manager (electronic and hard copy)NRC Senior Resident Inspector for PVNGS Enclosure 1Summary of Cumulative Effects on Calculated Peak CladTemperature (PCT) for PVNGS Due to Changes/Errors inEmergency Core Cooling System (ECCS) Performance Evaluation Models Enclosure 1Summary of Cumulative Effects on Calculated PCT for PVNGSDue to Changes/Errors in ECCS Performance Evaluation ModelsTable 1: Large Break LOCA Margin Summary Sheet for 2013Plant Name:Utility Name:Palo Verde Nuclear Generating Station Units 1, 2, and 3Arizona Public Service Company (APS)Evaluation Model: Westinghouse (formerly Combustion Engineering) 1999 EMPeak Clad Temperature:
2106 OF (analysis of record reported in PVNGS UFSARSection 6.3.3)A. Cumulative 10 CFR 50.46 Changes andError Corrections
-Previously Reported (a)B. 10 CFR 50.46 Changes and ErrorCorrections
-New for CY 20131. None Identified for Units 2 or 32. Removal of eight AREVA Lead TestAssemblies (Unit 1 Only) (b)C. Absolute Sum of Cumulative 10 CFR 50.46Changes and Error Corrections D. Licensing Basis PCT (Reported in UFSAR)+ Cumulative PCT Assessments (Changesand Error Corrections)
Net PCTEffectAPCT = + 4 OF (Units1 and 3 Only)APCT = + 0 OF (Units2 and 3 Only)APCT = -4 OF (Unit 1Only)APCT =Absolute PCTEffect+ 4 OF (Units 1and 3 Only)* 0 OF (Units 2and 3 Only)+ 0 OF (Unit 1Only) (b)+ 0 OF (Units 1and 2)+ 4 OF (Unit 3)2106 OF (Units 1and 2)2110 OF (Unit 3)Notes: (a) PVNGS reanalyzed the Large Break LOCA event with an NRC approved Evaluation Model in 2009, as reported in Letter No. 102-06113, 30-Day Report Pursuant to 10CFR 50.46(a)(3)(ii) and Submittal of Large Break Loss of Coolant AccidentReanalysis
- Results, dated December 22, 2009 (NRC ADAMS Accession No.ML100040066).
The reanalysis incorporated and corrected previously identified changes and errors, resetting the cumulative changes and error corrections that hadpreviously been reported through the end of CY 2008 (NRC ADAMS Accession No.ML091810703).
(b) With the removal of the eight AREVA Lead Test Assemblies from Unit 1, there isno need to track the assumed + 4 OF net PCT effect as a change to the analysis ofrecord, as Unit 1 has been restored to the configuration assumed.
This wasspecifically addressed in the aforementioned APS letter, dated December 22, 2009.The sum of the PCT from the most recent analysis of record (AOR) using anacceptable evaluation model, and the estimated cumulative effects of PCT impactsfor changes and error corrections made since that AOR, remains less than 2200 OF.1 Enclosure 1Summary of Cumulative Effects on Calculated PCT for PVNGSDue to Changes/Errors in ECCS Performance Evaluation ModelsTable 2: Small Break LOCA Margin Summary Sheet for 2013Plant Name:Utility Name:Palo Verde Nuclear Generating Station Units 1, 2, and 3Arizona Public Service Company (APS)Evaluation Model: Westinghouse (formerly Combustion Engineering)
S2MPeak Clad Temperature:
1618OF (analysis of record reported in PVNGS UFSARSection 6.3.3)A. Cumulative 10 CFR 50.46 Changes andError Corrections
-Previously ReportedB. 10 CFR 50.46 Changes and ErrorCorrections
-New for CY 20131. None Identified C. Absolute Sum of Cumulative 10 CFR 50.46Changes and Error Corrections D. Licensing Basis PCT (Reported in UFSAR) +Cumulative PCT Assessments (Changesand Error Corrections)
APCT =APCT =APCT =Net PCTEffect+ 0 OF+ 0 OFAbsolute PCTEffect* 0 OF+ 0 OF+ 0 OF1618 OFThe sum of the PCT from the most recent AOR using an acceptable evaluation model, and the estimated cumulative effects of PCT impacts for changes and errorcorrections made since that AOR, remains less than 2200 OF.2 Enclosure 2Westinghouse Electric Company Letter, Palo Verde NuclearGenerating Station Units 1, 2, and 3, 10 CFR 50.46 AnnualNotification and Reporting for 2013, letter number LTR-TLA-14-010, dated March 19, 2014 Westinghouse Non-Proprietary Class 3Westinghouse Electric Companye Westinghouse Nuclear Services20 International DriveWindsor, Connecticut 06095USADirect tel: (860) 731-6508Direct fax: (860) 731-4528e-mail: parikha@westinghouse.com Our ref: LTR-TLA-14-010, Rev.0March 19, 2014Palo Verde Nuclear Generating Station Units 1, 2, and 310 CFR 50.46 Annual Notification and Reporting for 2013
Dear Sir or Madam:
This letter provides 10 CFR 50.46 reporting information pertaining to the Westinghouse Electric Companyemergency core cooling system (ECCS) performance evaluation models (EMs) and their application toyour plants for calendar year 2013.There were no changes, error corrections, or enhancements to the 1999 EM, which is the EM used in yourplants' large break loss of coolant accident (LBLOCA)
ECCS performance analysis in calendar year 2013.Additionally, there were no 2013 changes, error corrections, or enhancements to the Supplement 2evaluation model (S2M), which is the EM used in your plants' small break loss of coolant accident(SBLOCA)
ECCS performance analysis.
The peak cladding temperature (PCT) rackup sheets, along with your plants' specific evaluation text, areenclosed in the attachment.
The rackup sheets, which were obtained from the Westinghouse 10 CFR50.46 rackup database, identify the PCTs of the ECCS performance analyses of record (AOR) for yourplants and the PCT assessments associated with the AOR through the end of calendar year 2013.There were no changes to or errors found in the 1999 LBLOCA Evaluation Model in calendar year 2013.There were no changes to or errors found in the S2M SBLOCA Evaluation Model in calendar year 2013.There is a cumulative sum of the absolute magnitudes of PCT changes of 4 OF for the Unit 1 LBLOCA AORCycle 17 operation for 2013.There is a cumulative sum of the absolute magnitudes of PCT changes of 4 OF for the Unit 3 LBLOCA AORoperation for 2013.There are no PCT changes on the Unit 1 LBLOCA AOR Cycle 18 operation, Unit 2 LBLOCA AOR, andUnits 1, 2 and 3 SBLOCA AORs for 2013.This letter is provided for your use in making a determination relative to the reporting requirements of 10CFR 50.46. The information provided in this letter was prepared in accordance with Westinghouse's Quality Management System.© 2014 Westinghouse Electric Company LLCAll Rights Reserved Westinghouse Non-Proprietary Class 3LTR-TLA-1 4-010Page 2 of 3March 19, 2014Author: (Electronically Approved)*
Ajal J. ParikhTransient
& LOCA AnalysisVerifier:
(Electronically Approved)*
Douglas W. AtkinsTransient
& LOCA AnalysisApproved:
(Electronically Approved)*
Patrick R. Kottas for John Ghergurovich
- Manager, Transient
& LOCA Analysis*Electronically approved records are authenticated in the electronic document management system.
Westinghouse Non-Proprietary Class 3LTR-TLA-14-010 Page 3 of 3March 19, 2014RACKUP SharePoint Check:EMs applicable to Palo Verde Nuclear Generating Station Units 1, 2, and 3:Appendix K Small Break -S2MAppendix K Large Break -1999 EM2013 IssuesTransmittal Letter Issue Description None N/A Westinghouse Non-Proprietary Class 3Attachment to LTR-TLA-14-010 Page 1 of 8March 19, 2014
Attachment:
LBLOCA and SBLOCA Rackup Sheets Westinghouse LOCA Peak Clad Temperature Summary for Appendix K Large BreakPlant Name: Palo Verde Nuclear Generating Station Unit 1 C ycle 17Utility Name: Arizona Public ServiceRevision Date: 2/19/20 14Analysis Information EM: 1999 EM Analysis Date: 8/31/2009 Limiting Break Size: 0.6 DEG/PDFuel: 16x16 System 80 SGTP (%): 10PLHGR (kW/ft):
13.1Notes: 1. Plant Configuration:
Rated Core Power = 3990 MWt, Replacement Steam Generators.
- 2. Fuel Design: 16x16 System 80 with ZIRLOTM cladding, value-added
- pellets, and erbia burnable absorbers.
Clad Temp (0F) Ref. NotesLICENSING BASISAnalysis-Of-Record PCT 2106 1PCT ASSESSMENTS (Delta PCT)A. PRIOR ECCS MODEL ASSESSMENTS I Evaluation for the Insertion of 8 AREVA LTAs into Palo Verde 4 2B. PLANNED PLANT MODIFICATION EVALUATIONS I None 0C. 2013 ECCS MODEL ASSESSMENTS I None 0D. OTHER*I None 0LICENSING BASIS PCT + PCT ASSESSMENTS PCT = 2110* It is recommended that the licensee determine if these PCT allocations should be considered with respect to10 CFR 50.46 reporting requirements.
References:
I CVER-09-62, "Analyis of Record for Large Break LOCA ECCS Performance Analysis Including Replacement SteamGenerators and Simplified Head Implementation for PVNGS Units 1, 2, and 3," August 2009.2 .LTR-OA-08-106, "10 CFR 50.46 Report for PVNGS Units 1,2, and 3 for an Evaluation for the Insertion of 8 AREVA LTAsand the Correction of an Error in the Steam Generator Economizer Input," December 2008.Notes:None Westinghouse LOCA Peak Clad Temperature Summary for Appendix K Large BreakPlant Name: Palo Verde Nuclear Generating Station Unit I C ycle 18Utility Name: Arizona Public ServiceRevision Date: 2/19/2014 Analysis Information EM: 1999 EM Analysis Date: 8/31/2009 Limiting Break Size: 0.6 DEG/PDFuel: 16x16 System 80 SGTP (%): 10PLHGR (kW/ft):
13.1Notes: 1. Plant Configuration:
Rated Core Power = 3990 MWt, Replacement Steam Generators.
- 2. Fuel Design: 16x16 System 80 with ZIRLOTM cladding, value-added
- pellets, and erbia burnable absorbers.
Clad Temp (OF) Ref. NotesLICENSING BASISAnalysis-Of-Record PCT 2106 1PCT ASSESSMENTS (Delta PCT)A. PRIOR ECCS MODEL ASSESSMENTS
- 1. None 0B. PLANNED PLANT MODIFICATION EVALUATIONS 1 None 0C. 2013 ECCS MODEL ASSESSMENTS I. None 0D. OTHER*I. None 0LICENSING BASIS PCT + PCT ASSESSMENTS PCT = 2106* It is recommended that the licensee determine if these PCT allocations should be considered with respect to10 CFR 50.46 reporting requirements.
References:
- 1. CVER-09-62, "Analyis of Record for Large Break LOCA ECCS Performance Analysis Including Replacement SteamGenerators and Simplified Head Implementation for PVNGS Units 1, 2, and 3," August 2009.Notes:None Westinghouse LOCA Peak Clad Temperature Summary for Appendix K Small BreakPlant Name: Palo Verde Nuclear Generating Station Unit 1Utility Name: Arizona Public ServiceRevision Date: 2/19/2014 Analysis Information EM: S2M Analysis Date: 3/22/2002 Limiting Break Size: 0.05 sq ft/PDFuel: 16x16 System 80 SGTP (%): 10PLHGR (kW/ft):
13.5Notes: 1. Plant Configuration:
Rated Core Power = 3990 MWt, Replacement Steam Generators.
- 2. Fuel Design: 16x16 System 80 with ZIRLOTM cladding, value-added
- pellets, and erbia burnable absorbers.
Clad Temp (IF) Ref. NotesLICENSING BASISAnalysis-Of-Record PCT 1618 1PCT ASSESSMENTS (Delta PCT)A. PRIOR ECCS MODEL ASSESSMENTS I. None 0B. PLANNED PLANT MODIFICATION EVALUATIONS I. None 0C. 2013 ECCS MODEL ASSESSMENTS I None 0D. OTHER*I None 0LICENSING BASIS PCT + PCT ASSESSMENTS PCT = 1618* It is recommended that the licensee determine if these PCT allocations should be considered with respect to10 CFR 50.46 reporting requirements.
References:
I .A-PV-FE-0149, Rev. 001, "Palo Verde Units 1,2 and 3 S2M Bounding SBLOCA ECCS Performance Analysis,"
March 2002.Notes:None Westinghouse LOCA Peak Clad Temperature Summary for Appendix K Large BreakPlant Name: Palo Verde Nuclear Generating Station Unit 2Utility Name: Arizona Public ServiceRevision Date: 2/19/2014 Analysis Information EM: 1999 EM Analysis Date: 8/31/2009 Limiting Break Size: 0.6 DEG/PDFuel: 16x16 System 80 SGTP (%): 10PLHGR (kW/ft):
13.1Notes: I. Plant Configuration:
Rated Core Power = 3990 MWt, Replacement Steam Generators.
- 2. Fuel Design: 16x16 System 80 with ZIRLOTM cladding, value-added
- pellets, and erbia burnable absorbers.
Clad Temp (IF) Ref. NotesLICENSING BASISAnalysis-Of-Record PCT 2106 1PCT ASSESSMENTS (Delta PCT)A. PRIOR ECCS MODEL ASSESSMENTS I .None 0B. PLANNED PLANT MODIFICATION EVALUATIONS
- 1. None 0C. 2013 ECCS MODEL ASSESSMENTS
- 1. None 0D. OTHER*I. None 0LICENSING BASIS PCT + PCT ASSESSMENTS PCT = 2106* It is recommended that the licensee determine if these PCT allocations should be considered with respect to10 CFR 50.46 reporting requirements.
References:
I. CVER-09-62, "Analysis of Record for Large Break LOCA ECCS Performance Analysis Including Replacement SteamGenerators and Simplified Head Implementation for PVNGS Units 1, 2, and 3," August 2009.Notes:None Westinghouse LOCA Peak Clad Temperature Summary for Appendix K Small BreakPlant Name: Palo Verde Nuclear Generating Station Unit 2Utility Name: Arizona Public ServiceRevision Date: 2/19/2014 Analysis Information EM: S2M Analysis Date: 3/22/2002 Limiting Break Size: 0.05 sq ft/PDFuel: 16x16 System 80 SGTP (%): 10PLHGR (kW/ft):
13.5Notes: I. Plant Configuration:
Rated Core Power = 3990 MWt, Replacement Steam Generators.
- 2. Fuel Design: 16x16 System 80 with ZIRLOTM cladding, value-added
- pellets, and erbia burnable absorbers.
Clad Temp (IF) Ref. NotesLICENSING BASISAnalysis-Of-Record PCT 1618 1PCT ASSESSMENTS (Delta PCT)A. PRIOR ECCS MODEL ASSESSMENTS
- 1. None 0B. PLANNED PLANT MODIFICATION EVALUATIONS I None 0C. 2013 ECCS MODEL ASSESSMENTS I None 0D. OTHER*I. None 0LICENSING BASIS PCT + PCT ASSESSMENTS PCT = 1618* It is recommended that the licensee determine if these PCT allocations should be considered with respect to10 CFR 50.46 reporting requirements.
References:
I .A-PV-FE-0149, Rev. 001, "Palo Verde Units 1, 2 and 3 S2M Bounding SBLOCA ECCS Performance Analysis,"
March 2002.Notes:None Westinghouse LOCA Peak Clad Temperature Summary for Appendix K Large BreakPlant Name: Palo Verde Nuclear Generating Station Unit 3Utility Name: Arizona Public ServiceRevision Date: 2/19/2014 Analysis Information EM: 1999 EM Analysis Date: 8/31/2009 Limiting Break Size: 0.6 DEG/PDFuel: 16x16 System 80 SGTP (%): 10PLHGR (kW/ft):
13.1Notes: 1. Plant Configuration:
Rated Core Power = 3990 MWt, Replacement Steam Generators.
- 2. Fuel Design: 16xl6 System 80 with ZIRLOTM cladding, value-added
- pellets, and erbia burnable absorbers.
Clad Temp (IF) Ref. NotesLICENSING BASISAnalysis-Of-Record PCT 2106 1PCT ASSESSMENTS (Delta PCT)A. PRIOR ECCS MODEL ASSESSMENTS I Evaluation for the insertion of up to 8 NGF LUAs 4 2B. PLANNED PLANT MODIFICATION EVALUATIONS I None 0C. 2013 ECCS MODEL ASSESSMENTS 1 None 0D. OTHER*I None 0LICENSING BASIS PCT + PCT ASSESSMENTS PCT = 2110* It is recommended that the licensee determine if these PCT allocations should be considered with respect to10 CFR 50.46 reporting requirements.
References:
I CVER-09-62, "Analysis of Record for Large Break LOCA ECCS Performance Analysis Including Replacement SteamGenerators and Simplified Head Implementation for PVNGS Units 1, 2, and 3," August 2009.2 .WCAP-17188-P, Rev. 2, "Palo Verde NGF LUA Engineering Report,"
March 2011.Notes:None Westinghouse LOCA Peak Clad Temperature Summary for Appendix K Small BreakPlant Name: Palo Verde Nuclear Generating Station Unit 3Utility Name: Arizona Public ServiceRevision Date: 2/19/2014 Analysis Information EM: S2M Analysis Date: 3/22/2002 Limiting Break Size: 0.05 sq ft/PDFuel: 16x16 System 80 SGTP (%): 10PLHGR (kW/ft):
13.5Notes: 1. Plant Configuration:
Rated Core Power = 3990 MWt, Replacement Steam Generators.
- 2. Fuel Design: 16x16 System 80 with ZIRLOTM cladding, value-added
- pellets, and erbia burnable absorbers.
Clad Temp (IF) Ref. NotesLICENSING BASISAnalysis-Of-Record PCT 1618 1PCT ASSESSMENTS (Delta PCT)A. PRIOR ECCS MODEL ASSESSMENTS I .None 0B. PLANNED PLANT MODIFICATION EVALUATIONS 1 None 0C. 2013 ECCS MODEL ASSESSMENTS
- 1. None 0D. OTHER*I. None 0LICENSING BASIS PCT + PCT ASSESSMENTS PCT = 1618* It is recommended that the licensee determine if these PCT allocations should be considered with respect to10 CFR 50.46 reporting requirements.
References:
I .A-PV-FE-0149, Rev. 001, "Palo Verde Units 1,2, and 3 S2M Bounding SBLOCA ECCS Performance Analysis,"
March 2002.Notes:None