Letter Sequence Meeting |
|---|
|
|
MONTHYEARNL-22-0316, Emergency License Amendment Request for Technical Specification 3.7.2 Regarding One-Time Extension of Completion Time for Plant Service Water (Psw) Pump Inoperable2022-11-30030 November 2022
Emergency License Amendment Request for Technical Specification 3.7.2 Regarding One-Time Extension of Completion Time for Plant Service Water (Psw) Pump Inoperable
Project stage: Request
NL-23-0019, GEN-ISI-ALT-2023-01, Request to Use Provision of a Later Edition of the ASME Boiler and Pressure Vessel Code, Section XI2023-04-12012 April 2023
GEN-ISI-ALT-2023-01, Request to Use Provision of a Later Edition of the ASME Boiler and Pressure Vessel Code, Section XI
Project stage: Request
PMNS20230831, Notice of Public, pre-submittal Meeting with Southern Nuclear Operating Company, Inc. (SNC) to Discuss a Future License Amendment Request (LAR) for the Edwin I. Hatch Nuclear Plant, Units 1 and 2 (Hatch)2023-07-13013 July 2023
Notice of Public, pre-submittal Meeting with Southern Nuclear Operating Company, Inc. (SNC) to Discuss a Future License Amendment Request (LAR) for the Edwin I. Hatch Nuclear Plant, Units 1 and 2 (Hatch)
Project stage: Meeting
ML23206A0412023-08-0202 August 2023
SNC Slides - Public Pre-Submittal Meeting on Aug 02, 2023 - Request for 45-Day Limited Extension of Risk Informed Completion Time (RICT) Program Backstop for TS 3.7.1 & 3.7.2
Project stage: Meeting
ML23202A1122023-08-0202 August 2023
Units, 1 and 2; and Vogtle Units 1 and 2 - Request to Use a Provision of a Later Edition of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI
Project stage: Other
ML23244A0312023-09-18018 September 2023
MTS - Meeting Summary - Pre-Submittal Meeting on August 02, 2023 - RICT 45-day Extension for TS 3.7.1 & 3.7.2
Project stage: Meeting
2023-07-13
[Table View] |
Similar Documents at Hatch |
|---|
Category:Slides and Viewgraphs
MONTHYEARML24317A0292024-11-13013 November 2024
November 13, 2024 Hatch Pre-Submittal Public Meeting Slides (NRC Staff Presentation)
ML24313A1052024-11-13013 November 2024
November 13, 2024, Hatch Pre-Submittal Public Meeting Slides (Southern Co.)
ML24295A1842024-10-16016 October 2024
SNC Slides - Hatch Public Pre-Submittal Meeting on Oct 30, 2024 - Change EDG SRs 3.8.1.2 & 3.8.1.5 Load Bands
ML24278A0012024-09-19019 September 2024
SLR Environmental Pre-Application Meeting - Southern Nuclear Corporation Presentation Slides
ML24263A0822024-09-19019 September 2024
SLR Pre-Application Meeting - NRC Presentation Slides
ML24123A0502024-05-0202 May 2024
2023 Annual Assessment Public Meeting Summary Meeting Number 20240479
ML23361A0812024-01-0808 January 2024
SNC Slides - Pre-Submittal Public Meeting on January 8, 2024 Related to Fleet QATR
ML23361A1092024-01-0808 January 2024
SNC Slides for Public Meeting on 1-8-24 to Discuss Hatch LAR - Revise TS Table 1.1-1 (Modes) to Relax Required No. of Fully Tensioned RPV Head Closure Studs
ML23206A0412023-08-0202 August 2023
SNC Slides - Public Pre-Submittal Meeting on Aug 02, 2023 - Request for 45-Day Limited Extension of Risk Informed Completion Time (RICT) Program Backstop for TS 3.7.1 & 3.7.2
ML23088A2362023-03-28028 March 2023
SNC Presentation - Public Meeting - 03-28-2023 - Page from ML22231B055
ML23079A2362023-03-20020 March 2023
Annual Assessment Meeting Presentation Slides
ML22209A1872022-07-28028 July 2022
Pre-Submittal Meeting on August 1, 2022 Re Plant Hatch LAR: Relaxation of Required Number of Fully Tensioned Reactor Pressure Vessel Head Closure Studs (EPID L-2022-LRM-0052) (Slides)
ML22167A1402022-06-22022 June 2022
Pre-Submittal Public Meeting Slides for Rewrite TS-3.7.2 License Amendment
ML22080A0192022-03-18018 March 2022
Annual Assessment Meeting Presentation
ML21271A2022021-10-0505 October 2021
Pre-Submittal Meeting on October 5, 2021 - Hatch NFPA 805 Supplement LAR (SNC Slides)
ML21225A0312021-08-31031 August 2021
Pre-Submittal Meeting - Request to Eliminate the Requirement for Automatic Main Steam Isolation on High Turbine Building Area Temperature
ML21222A0342021-08-16016 August 2021
SNC Slides - Hatch TSTF-505 LAR - Pre-Submittal Meeting - 08-16-2021
ML21083A2872021-03-24024 March 2021
Pre-Submittal Meeting - Quality Assurance Topical Report Revision to Allow Application of Remote Assessment Techniques During Exigent Conditions
ML21021A2462021-01-21021 January 2021
Slides - SNC Slides - Pre-Submittal Meeting on January 26, 2021 - Hatch NFPA-805 LAR
ML20318A1032020-11-12012 November 2020
SNC ERO Staffing LAR RAI Responses
ML20156A0012020-06-0404 June 2020
Slides - SNC Slides - Pre-Submittal Meeting on June 10, 2020 - Hatch EDG AOT Extension
ML20101K6582020-04-10010 April 2020
Annual Assessment
ML19123A3542019-05-0202 May 2019
Public Meeting Summary - Hatch Nuclear Plant, Docket Nos. 50-321 and 50-366
ML19025A0242019-01-25025 January 2019
SNC License Amendment Request for Proposed Changes to Emergency Response Organization Staffing and Augmentation
ML18124A0052018-05-0404 May 2018
Summary of Public Meeting - Hatch Nuclear Plant Docket Nos. 50-321, 50-366
ML18066A0302018-03-0101 March 2018
Slides for March 1, 2018 Public Meeting
ML17324A3462017-11-15015 November 2017
Meeting Slides for 11/15/2017, Public Meeting Between NRC and SNC Regarding Hatch License Amendment Request - Application of TSTF-423 to Drywell Spray Function Technical Specification End State
ML16174A0272016-06-21021 June 2016
Revised NRC-SNC Hatch NFPA 805 Extension 06212016
ML16169A0612016-06-20020 June 2016
SNC Slides for 6-21-16 Public Meeting on Hatch NFPA 805 Extension
ML16169A0602016-06-17017 June 2016
SNC Draft Letter to NRC Regarding Hatch NFPA 805 Extension
ML15191A4872015-07-13013 July 2015
Unit 2: Plant Service Water Piping Replacement Using High Density Polyethylene (Hdpe) Piping Nrc/Snc Meeting July 13, 2015
ML15106A2042015-04-22022 April 2015
April 22, 2015, Meeting with Southern Nuclear Company, Slide Presentation
ML14177A0862014-06-26026 June 2014
NRC Presentation Slides for Public Meeting with Southern on Seismic Reevaluation (GMRS)
ML14176B2392014-06-26026 June 2014
Southern Nuclear Operating Company Seismic Reevaluation - GMRS NTTF 2.1 Presentation Slides
ML13112A2552013-04-22022 April 2013
Summary of Public Meeting to Discuss the Annual Assessment of Edwin I. Hatch Nuclear Plant with the Public for the Period of January 1, 2012, - December 31, 2012
ML12115A2572012-04-24024 April 2012
Summary of with Southern Nuclear Operating Co., Inc., to Discuss the Annual Assessment of Edwin I. Hatch for 2011
ML1111900612011-04-28028 April 2011
Summary of Public Meeting with Southern Nuclear Operating Company, Inc., to Discuss the Nrc'S Reactor Oversight Process and the Nrc'S Annual Assessment of Plant Safety Performance at Hatch for the Period of 01/01/210 - 12/31/2010
ML1011304442010-04-23023 April 2010
Summary of Public Meeting to Discuss the Annual Assessment of Edwin I. Hatch for the Period of January 1, 2009 Through December 31, 2009
ML1020105352009-10-29029 October 2009
Tritium Meeting, Southern Nuclear, Hatch
ML0910607322009-04-16016 April 2009
Summary of Meeting with Southern Nuclear Operating Co, Inc., to Provide Opportunities to Discuss Annual Assessment of Edwin I. Hatch for the Period of 01/01/2008 - 12/31/08
ML0810704462008-04-0909 April 2008
Annual Assessment Public Meeting, Slides
ML0723505462007-08-23023 August 2007
08/15/2007 Public Meeting Summary - Enclosure 2
ML0717004662007-05-31031 May 2007
05/2007 Generation Planning Overview.
ML0632800652006-11-14014 November 2006
Meeting Summary Handouts, Enclosure 2 (Tac Nos. MD2934 and MD2935)
ML0622804942006-08-0909 August 2006
Hatch Tritium Public Meeting Power Point Slide Attachment
ML0611505512006-04-12012 April 2006
Slides for Annual Assessment Meeting Cy 2005
ML0610704022006-04-12012 April 2006
Edwin I. Hatch Annual Assessment Meeting Cy 2005- Slides
ML0535403442005-12-12012 December 2005
Submittal of Power Point Presentation Proposed Solutions to Part 21 on Safety Limit 2.1.1.1, NUREG-1433/34
ML0511501332005-04-13013 April 2005
Annual Assessment Meeting Cy 2004, Edwin I. Hatch Nuclear Plant - NRC Region II, Vidalia, Ga, April 13, 2005
ML0410406802004-04-0606 April 2004
Meeting Presentation for Edwin I. Hatch Annual Assessment Meeting, Reactor Oversight Program - Cy 2003
2024-09-19
[Table view] |
Text
EdwinI.HatchNuclearPlant RequestforLimitedExtensionofRiskInformed CompletionTime(RICT)ProgramBackstop
2 Agenda
The picture can't be displayed.
Agenda
Purpose:
EngageNRCStaffonSouthernNuclearsproposedchangetoextendthe RiskInformedCompletionTime(RICT)backstopforselectresidualheatremoval servicewater(RHRSW)andplantservicewater(PSW)TechnicalSpecification(TS)
RequiredActions(A.1-onepumpinoperable)
- SystemDesign
- CurrentTSRequirements
- BriefHistory
- RequestedChanges
- Approach
- Questions 3
4 SystemDesign
The picture can't be displayed.
- Eachsubsystemhasasuctionsource(river),two50%(i.e.,4000gpm)capacitypumps, header,valves,piping,andheatexchanger
- Pumpapproximately12,000lbs /61ftlong;Motorapproximately7,600lbs /6ftlong
- SafetyanalysesassumeRHRSWsupportscoolingofthesuppressionpoolfollowing alossofcoolantaccident(LOCA)
- Safetyanalysesassumethat,withonesubsystemwithtwopumpsoperatingat3750 gpmeachandupto5%oftubespluggedinRHRheatexchanger,thesuppressionpool temperatureandprimarycontainmentpressurearelimited211.6°F(design 281°F) and 27.8psig(maximumallowable62psig),respectively
- PRASuccessCriteriaisonepumpat4000gpmandoneheatexchanger
[ML21300A153]
SystemDesign-RHRSW
The picture can't be displayed.
- Eachsubsystemhasasuctionsource(river),two8500gpmcapacitypumps,header, valves,piping,andheatexchanger
- Threepumpsrequiredfornormaloperation;onepumprequiredforsafetyanalysis
- Pumpapproximately12,000lbs /61ftlong;Motorapproximately7,600lbs /6ftlong
- Safetyanalysesassumesystemsuppliescoolingtosafetyequipmentduring emergencyconditions
- ThedieselgeneratorsandthelongtermcoolingcapabilityoftheRHR,corespray,and RHRservicewaterpumpsdependonthecoolingprovidedbythePSWsystem.Either subsystemcanprovideadequatecoolingwithonlyonepumpprovidingflow.
- PRASuccessCriteria:onepumpat2400gpmandultimateheatsink
[ML21300A153]
SystemDesign-PSW
The picture can't be displayed.
7 Plantservicewaterpump
The picture can't be displayed.
RHRSW 8
The picture can't be displayed.
PSW 9
10 CurrentTSRequirements
The picture can't be displayed.
11 CurrentTSRequirements
12 ReasonforChange
The picture can't be displayed.
ReasonforChange
- Pumpreplacement typically710daysbut:
- Replacementpumpfailspreservicetest
- Needdiverstoinspectsuctionarea[+1day]
- Replacewith2nd replacementpump[+7to10days]
- Additionaldiscoveriesmadeduringpumpreplacement[+11days]
- Problemduringpostmaintenancetestrequiringoffsitemotorrefurbish[+7to10days]
- Preventivemaintenance(PM)toreplaceapumpmotoris45daysbut:
- Motor/pumpalignmentissue[+1day]
- Replacementpumpmotorrequiresoffsiteservicesandreinstall[+16days]
- Difficultiesaligningdischargeheadwithdischargecheckvalveflange[+10days]
The picture can't be displayed.
ReasonforChange November 2019 Unit 1 RHRSW pump B was replaced and then failed during pre-service testing. SNC replaced that pump with another new pump, which also failed during pre-service testing. SNC submitted an emergency license amendment request a to allow a one-time extension to the TS 3.7.1 Required Action A.1 Completion Time from 30 days to 45 days. The license amendment request was withdrawn b after the pump was restored to operable status less than 3 days prior to the original 30-day Completion Time.
September 2021 Challenges encountered during repair and replacement activities to restore operability to Unit 1 PSW pump C led to the need for an emergency license amendment request c (and RAI response d). The approved emergency license amendment e allowed, with compensatory measures established, a one-time extension of the TS 3.7.2 Required Action A.1 Completion Time from 30 days to 45 days.
April 2022 Challenges encountered during repair and replacement activities to restore operability to Unit 1 PSW pump A led to SNC submitting an emergency license amendment request f to, with compensatory measures established, extend the TS 3.7.2 Required Action A.1 Completion Time from 30 days to 45 days. The license amendment request was withdrawn g after HNP personnel restored the pump to operable condition less than 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> prior to the 30-day Completion Time.
- a. ML19333B967
- b. ML19336B596
- c. ML21264A003
- d. ML21266A004
- e. ML21264A644
- f. ML22120A087
- g. ML22123A159 14
15 RequestedChanges
The picture can't be displayed.
16 RequestedChanges
The picture can't be displayed.
17 RequestedChanges
18 Approach
The picture can't be displayed.
Approach-Justification(Technical/RiskBasis)
- Thecurrent30dayRICTbackstopisadministrativelimit
>> ProposedextensionislimitedtoCTswhereneedhasbeendemonstrated(TS3.7.1andTS3.7.2 RAA.1)
- TheRICTprogramprovidesassurancethattheplantismaintainedatanacceptablerisk level:
>> ConfigurationspecificCompletionTimes(willnotautomaticallyget45days)
>> RiskManagementActions
>> RICTBudgetandSNCproceduresencouragestayingwithinthefrontstopwhenpossible
- Safetyanalysisrequires:
>> OnePSWpumprequiredtosupplyforsafeshutdown,includingRHRshutdowncoolingsystem requirements
>> TwoRHRSWpumpsrequiredtoprovideadequateheatremovalcapacityfollowingadesignbasis LOCA.
- Wouldprecludeneedforanemergencyamendment maintainplantfocusonrestoring operability
The picture can't be displayed.
Approach-Justification(Precedence)
- CompletionTimesgreaterthan30daysarenotuncommon
>> SomePlantTechnicalSpecificationsExamples:
- HatchUnit1andUnit2TS3.7.4MainControlRoomEnvironmentalControl(MCREC)SystemRequired ActionB.3hasa90daycompletiontime.
- LimerickUnit1andUnit2TS3.7.1.2EmergencyServiceWaterSystem-CommonSystemActiona.1 allows45daystorestoreoperabilitywhenonepumpisinoperable.
- VogtleUnits1and2TS3.7.9UltimateHeatSink(UHS)RequiredActionD.2(restoreoperabilityto transferpump)hasa46dayCompletionTime.
- LaSalleUnits1and2TS3.7.3UltimateHeatSink(UHS)RequiredActionA.1(restoreoperabilitytocore standbycoolingsystempond)hasa90dayCompletionTime.
- ConsistentwithNUREG1433,CurrentHatchTS3.7.1andTS3.7.2allowcalculationofa RICTforonepumpinoperableineachsubsystem
The picture can't be displayed.
Approach Format
- SubmittalwillfollowpostTSTF505Adoption[ML20324A070]andNEI0602
- Attachmentstobeprovided:
1.
DescriptionandAssessment 2.
ProposedTechnicalSpecificationChanges(MarkUp) 3.
ProposedTechnicalSpecificationChanges(CleanTyped) 4.
ProposedTechnicalSpecificationBasesChanges(MarkUp)- ForInformationOnly
- Enclosuresintendedtobeprovided:
1.
ListofRequiredActionstoCorrespondingPRAFunctions 2.
InformationSupportingConsistencywithRegulatoryGuide1.200,Revision2 4.
InformationSupportingJustificationofExcludingSourcesofRiskNotAddressedbythePRAModels 5.
BaselineCDFandLERF 9.
KeyAssumptionsandSourcesofUncertainty
- 12. RiskManagementActionExamples
- Enclosuresnotintendedtobeprovided:
3.
InformationSupportingTechnicalAdequacyofPRAModelsWithoutPRAStandardsEndorsedbyRegulatoryGuide1.200,Revision2 6.
JustificationofApplicationofAtPowerPRAModestoShutdownModes 7.
PRAModelUpdateProcess 8.
AttributesoftheRealTimeModel
- 10. ProgramImplementation
- 11. MonitoringProgram
22 Questions
