ML13127A080: 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 15: Line 15:
| page count = 34
| page count = 34
| project = TAC:MF0956
| project = TAC:MF0956
| stage = Other
| stage = Request
}}
}}


=Text=
=Text=
{{#Wiki_filter:Fleet Fire Protection ProgramgNFPA 805National Fire Protection AssociationNFPA 805 Pre-LAR Application for CNS, MNS, RNPJefferyErtmanDavidGoforth-NFPA805ProjectManagersJeffery Ertman, David Goforth -NFPA 805 Project ManagersApril 18, 2013 Agenda*NFPA 805 Transition Project Overviewj*License Amendment Request Overview*Fire PRA Overview2 Participants*Jeffery Ertman-NFPA 805 Project ManagerDidGfthNFPA805PjtM*David Goforth -NFPA 805 Project Manager*Donna Alexander -Manager Fleet Regulatory Affairs*BobRishel-PRAManagerBob Rishel PRA Manager*Jeff Robertson -Manager Regulatory Affairs*Julius Bryant -Regulatory Affairs ygy*Sarah Chisholm -PRA Engineer*Kelly Lavin -Site Technical Lead*Al Maysam -Regulatory Affairs *Jamie McCrory -PRA EngineerBdiWPRAEi*Brandi Weaver -PRA Engineer 3 Acronyms*AFW -Alternate Feed Water*CNS-CatawbaNuclearStation*MNS -McGuire Nuclear Station*MOV-MotorOperatedValveCNS Catawba Nuclear Station*CPT -Control Power Transformer*CSR -Cable Spreading Room*FAQ -Frequently Asked QuestionMOV Motor Operated Valve*NEI -Nuclear Energy Institute*NRC -Nuclear Regulatory Commission*OE -Operating Experience*FPRA -Fire Probabilistic Risk Assessment*FRE -Fire Risk Evaluation*FSA -Fire Safety AnalysisF&OFtdObti*PORV -Power Operated Relief Valve*RAI -Request for Additional Information*RCP -Reactor Coolant PumpRNPRbiNlPlt*F&O -Facts and Observations*HEAF -High Energy Arcing Fault*HRR -Heat Release Rate*LAR-LicenseAmendmentRequest*RNP -Robinson Nuclear Plant*SSA -Safe Shutdown Analysis*TDEFWP -Turbine Driven Emergency FeedwaterPumpLAR License Amendment Request*LERF -Large Early Release Frequency*LOOP -Loss of Offsite Power*UAM -Un-reviewed Analytical Method*VFDR -Variance From Deterministic Requirements4 Fleet Transition to NFPA 805MilestonesCNSMNSRNPLAR09/30/201309/30/201309/30/2013SafetyEvaluation09/30/201509/30/201509/30/2015NFPA 805 Program Implementation03/31/201603/31/201603/31/20165 LAR Document Submittal*Using Current Industry LAR Template-NEI Incorporating Generic RAIs*Incorporating Lessons Learned-Current Generic RAIs-Current Industry NFPA 805 LAR Submittals and RAIsInternalOEfrompreviousplantsubmittalsreviewsand-Internal OE from previous plant submittals, reviews, and implementation6 Catawba Nuclear Station7 Catawba Project Status*Traditional Fire Protection Elements -AttachmentL-NFPA805Chapter3RequirementsforApprovalAttachment L NFPA 805 Chapter 3 Requirements for Approval (10CFR50.48(c)(2)(vii)*Approval for existing wiring above the control room ceiling*ReactorCoolantPumpOilMistingReactor Coolant Pump Oil Misting-No Attachment T requests -Clarification of Prior NRC Approvals*FRE statusfl-FPRA Quantification Complete*CNS meets the requirements of acceptability for RG-1.174-Defense-in-Depth actions in review-Recovery Action*Local Trip of Reactor Coolant Pumps*Local throttling of Emergency FeedwaterFlow8 Catawba Project Status (continued)*LAR development started*Proposed Modifications -Breaker Coordination modifications-Inverter cable re-route-VCT Outlet Valve spurious closure issue resolved by modificationmodification-Additional modifications may result from FRE DID review or Chapter 3 required systems code review*Completed Modifications-4 Breaker Coordination modifications9 Catawba PRA*InternalEventsInternal Events-NEI 00-02 Internal Events Peer Review March 2002-Internal Gap Assessment to ASME/ANS PRA Standard as endorsed by RG 1.200*Performed in 2008*PerformedtoRG1200Revision1*Performed to RG 1.200 Revision 1-LAR technical adequacy statement will address any deltas to RG 1.200 Revision 2FocusedLERFPeerReviewinDecember2012(NEI0504)-Focused LERF Peer Review in December 2012 (NEI 05-04)-F&Os from these reviews will be dispositionedin the LAR for Fire PRA impact 10 Catawba Fire PRA*Full Scope Peer Review in 2010*F&Os will be addressed in LAR*NR/CR-6850/ EPRI 108239 methods used*Fire Modeling methods per NR/CR-6850/ EPRI 108239 *Removed credit for electrical cabinet treatment refinement*Well sealed Motor Control Centers11 CNS Deviations from NRC-Accepted FPRA MethodsMethods*Credit for administrative  controls (transients)*Credit for hot short duration failure probabilities for DC circuits12 Catawba Fire PRA SensitivitiesSensitivityFPRA CDF/LERFVFDR RiskCredit for Admin Controls (Transients)YesYesIgnition Frequency (FAQ-48)YesYesHot Short Duration (DC)YesNo11) It is not practical to vary the hot short duration credit for the deterministic variant and deterministic compliant case for each fire area; however, the impact on VFDR Risk may be estimated from the overall impact on FPRA CDF/LERF and the scope of VFDRs.13 Catawba Project Summary*NUREG-0800 non-compliances identified-Compensatory actions implemented as needed*NRC Fire Protection Triennial Inspection-Scheduled for April 2013 14 McGuire Nuclear Station15 McGuire Project Status*Traditional Fire Protection Elements-AttachmentL-NFPA805Chapter3RequirementsforApprovalAttachment L NFPA 805 Chapter 3 Requirements for Approval (10CFR50.48(c)(2)(vii)*Approval for existing wiring above the control room ceiling*Reactor Coolant Pump Oil Misting-No Attachment T requests  -Clarification of Prior NRC Approvals*FRE status-FPRA Quantification CompleteFPRAQuantificationComplete*MNS meets the requirements of acceptability for RG-1.174-FRE Defense-in-Depth review complete-Recovery Actiony*Local Trip of Reactor Coolant Pumps*Local throttling of Emergency FeedwaterFlow*Local operation of the PressurizerHeaters16 McGuire Project Status (continued)*LAR development in progress*Proposed Modifications-Eliminate spurious operation of TDEFWP Suction Valve-Modify condensate drain from containment to improve overall LERF*CompletedModifications*Completed Modifications-Current Transformer Modification-PressurizerHeaterModificationPressurizerHeater Modification17 McGuire PRA*InternalEventsInternal Events-NEI 00-02 Internal Events Peer Review October 2000-Internal Gap Assessment to ASME/ANS PRA standard as endorsed by RG 1.200*Performed in 2008*PerformedtoRG1200Revision1*Performed to RG 1.200 Revision 1-LAR technical adequacy statement will address any deltas to RG 1.200 Revision 2FocusedLERFPeerReviewinDecember2012(NEI0504)-Focused LERF Peer Review in December 2012 (NEI 05-04)-F&Os from these reviews will be dispositionedin the LAR for fire PRA impact18 McGuire Fire PRA*Full Scope Peer Review in 2009*F&Os will be addressed in LAR*NR/CR-6850/ EPRI 108239 methods used*Fire Modeling methods per NR/CR-6850/ EPRI 108239 *Removed credit for electrical cabinet treatment refinement*Well sealed Motor Control Centers19 MNS Deviations from NRC-Accepted FPRA MethodsMethods*Credit for hot short duration failure probabilities for DCiiDC circuits20 McGuire Fire PRA SensitivitiesSensitivityFPRA CDF/LERFVFDR RiskHot Short Duration (DC)YesNo1()Ignition Frequency (FAQ-48)YesYes1) It is not practical to vary the hot short duration credit for the deterministic variant and deterministic compliant case for each fire area; however, the impact on VFDR Risk may be estimated from the overall impact on FPRA CDF/LERF and the scope of VFDRs.21 McGuire Project Summary*Appendix R non-compliances identified -Compensatory actions implemented as needed*Completed NRC Fire Protection Triennial Inspection-February 2013-No significant findings22 Robinson Nuclear Plant23 Robinson Project Status*Traditional Fire protection Elements-AttachmentL-NFPA805Chapter3RequirementsforApprovalAttachment L -NFPA 805 Chapter 3 Requirements for Approval (10CFR50.48(c)(2)(vii)*Approval for existing wiring above control room ceiling-No Attachment T requests -Clarification of Prior NRC Approvalsqpp*FSA development starting in late April-FRE is performed as part of FSA development-Defense-in-Depthactionsinreview-Defense-in-Depth actions in review-FPRA Quantification Revision in Process*RNP meets the requirements of acceptability for RG-1.174*LARDevelopmentStartinginMay*LAR Development Starting in May*Modifications-Potential Modifications Identified-Final Scope After Fire PRA and FSAs are Completed24 Robinson Proposed Modifications*Incipient Detection*Protect MOVs from IN 92-18 Hot Short Failure*Electrically Coordinate Power Supplies*HEAF mitigation modification in E1/E2 Switchgear room*Protect Shutdown Valves*Credit 4thTrain of AFW*Credit Westinghouse RCP Shutdown Seal*Credit the Diesel Generators on the DeepwellPumps25 Robinson Completed ModificationsAuto Start/Auto Load of Dedicated Shutdown Diesel Generator on Loss of All AC Power Auto Reload of Battery Chargers on a LOOPBackup Instrument Air for Charging Pumps Speed Control PressurizerPORV & Charging Pump Make-up ModificationggppReplacement of HemycFire Barrier Wrap Emergency Lighting Modifications Evaluation and Modifications of the MOVs for IN92-18Installation of Fire Walls Between Transformers and Between Transformers And Turbine BuildingKey Locked Isolation Switch in Control Room to Isolate DC Electrical Power to Key yyAuxiliary Panels Protect the E-Bus Incoming Line Breakers from Spurious Operations for a Postulated Fire in the Turbine Bldg. Cable Rerouting to Protect Safe Shutdown Equipment26 Robinson PRA*Internal Events-Full Scope ASME/ANS PRA Standard Peer Review in October 2009-F&OswillbedispositionedintheLARforfirePRAimpact-F&Os will be dispositionedin the LAR for fire PRA impact 27 Robinson Fire PRA Overview*Full Scope Peer Review in 2013*F&Os being addressed in FPRA revision-Documented in LAR*NR/CR-6850/ EPRI 108239 methods used28 Robinson Fire PRA Overview (Continued)(Continued)*Credit taken for Flame Retardant Coatingg-IntumasticInstalled on Thermoplastic Cable*Unit 2 Cable Spread Room (CSR)/2Sih*E1/E2 Switchgear Room*Incipient DetectionInCabinetInstallationCreditperFAQ080046-In-Cabinet Installation -Credit per FAQ 08-0046*Main Control Boards*I & C Racks*Safeguards Cabinets-Area Wide -Normal Detection Credit*Unit2CableSpreadRoom*Unit 2 Cable Spread Room29 RNP Deviations from NRC-Accepted FPRAMethodsFPRA Methods*For closed-cabinet MCCs:-A severity factor of 0.1 is applied, where 90% of fires are contained within the MCC-HRRseverityfactorsaretreatedindependentlysimilarto-HRR severity factors are treated independently, similar to other cabinets-Method was used to Address RAI 5-32 for the HNP NFPA 805 Application*BNP LAR Audit RAIs under evaluation for applicability tRNPat RNP30 Robinson Fire PRA SensitivitiesSensitivityFPRA CDF/LERFVFDR RiskCPT credit for spurious failuresYesYesIitiF(FAQ48)YYIgnition Frequency (FAQ-48)YesYesIncipient Detection (FAQ-46)YesYes31 Robinson PRA Considerations*Re-evaluate treatment of 480V Switchgear-Amptectorsare used at RNP on E1/E2 Switchgears-Reviewing HEAF data for 480V SwitchgearNotagenericisse-Not a generic issue32 Robinson Project Summary*Developing committed modifications final scope and hdlischeduling*Appendix R non-compliances identified lddd-Compensatory actions implemented as needed*Completed NRC Fire Protection Triennial InspectionNb2012-November 2012-No significant findings33 Questions34
{{#Wiki_filter:Fleet Fire Protection Pro gram gNFPA 805National Fire Protection AssociationNFPA 805 Pre-LAR Application for CNS, MNS, RNPJefferyErtmanDavidGoforth
}}
-NFPA805ProjectManagersJeffery Ertman , David Goforth -NFPA 805 Project ManagersApril 18, 2013 Agenda*NFPA 805 Transition Pro ject Overview j*License Amendment Request Overview
*Fire PRA Overview 2
Participants
*Jeffery Ertman-NFPA 805 Project ManagerDidGfthNFPA805PjtM
*D av id G o f or th -NFPA 805 P ro j ec t Manager*Donna Alexander -Manager Fleet Regulatory Affairs
*BobRishel-PRAManager Bob Rishel PRA Manager*Jeff Robertson -Manager Regulatory Affairs
*Julius Br yant -Re gulator y Affairs y gy*Sarah Chisholm -PRA Engineer
*Kelly Lavin -Site Technical Lead
*Al Maysam  
-Regulatory Affairs  
*Jamie McCrory -PRA EngineerBdiWPRAEi*Bran di Weaver -PRA E ng i neer 3 Acronyms*AFW -Alternate Feed Water
*CNS-CatawbaNuclearStation
*MNS -McGuire Nuclear Station
*MOV-MotorOperatedValve CNS Catawba Nuclear Station*CPT -Control Power Transformer
*CSR -Cable Spreading Room
*FAQ -Frequently Asked QuestionMOV Motor Operated Valve*NEI -Nuclear Energy Institute
*NRC -Nuclear Regulatory Commission
*OE -Operating Experience
*FPRA -Fire Probabilistic Risk Assessment
*FRE -Fire Risk Evaluation
*FSA -Fire Safety Analysis F&OFtdObti*PORV -Power Operated Relief Valve
*RAI -Request for Additional Information
*RCP -Reactor Coolant Pump RNPRbiNlPlt*F&O -F ac t s an d Observa ti ons*HEAF -High Energy Arcing Fault
*HRR -Heat Release Rate
*LAR-LicenseAmendmentRequest
*RNP -R o bi nson N uc l ear Pl an t*SSA -Safe Shutdown Analysis
*TDEFWP -Turbine Driven Emergency FeedwaterPump LAR License Amendment Request*LERF -Large Early Release Frequency
*LOOP -Loss of Offsite Power
*UAM -Un-reviewed Analytical Method
*VFDR -Variance From Deterministic Requirements 4
Fleet Transition to NFPA 805MilestonesCNSMNSRNP LAR09/30/201309/30/201309/30/2013SafetyEvaluation09/30/201509/30/201509/30/2015NFPA 805 Program Implementation03/31/201603/31/201603/31/2016 5
LAR Document Submittal
*Using Current Industry LAR Template
-NEI Incorporating Generic RAIs
*Incorporating Lessons Learned
-Current Generic RAIs
-Current Industry NFPA 805 LAR Submittals and RAIsInternalOEfrompreviousplantsubmittalsreviewsand
-Internal OE from previous plant submittals , reviews , and implementation 6
Catawba Nuclear Station 7
Catawba Project Status
*Traditional Fire Protection Elements  
-AttachmentL
-NFPA805Chapter3RequirementsforApprovalAttachment L NFPA 805 Chapter 3 Requirements for Approval (10CFR50.48(c)(2)(vii)
*Approval for existing wiring above the control room ceiling
*ReactorCoolantPumpOilMistingReactor Coolant Pump Oil Misting-No Attachment T requests -Clarification of Prior NRC Approvals
*FRE status fl-FPRA Quanti fication Comp lete*CNS meets the requirements of acceptability for RG-1.174
-Defense-in-Depth actions in review
-Recovery Action
*Local Trip of Reactor Coolant Pumps
*Local throttling of Emergency FeedwaterFlow 8
Catawba Project Status (continued)
*LAR development started
*Proposed Modifications  
-Breaker Coordination modifications
-Inverter cable re-route
-VCT Outlet Valve spurious closure issue resolved by modificationmodification
-Additional modifications may result from FRE DID review or Chapter 3 required systems code review
*Completed Modifications
-4 Breaker Coordination modifications 9
Catawba PRA
*InternalEventsInternal Events-NEI 00-02 Internal Events Peer Review March 2002
-Internal Gap Assessment to ASME/ANS PRA Standard as endorsed by RG 1.200
*Performed in 2008
*PerformedtoRG1200Revision1
*Performed to RG 1.200 Revision 1-LAR technical adequacy statement will address any deltas to RG 1.200 Revision 2FocusedLERFPeerReviewinDecember2012(NEI05 04)-Focused LERF Peer Review in December 2012 (NEI 05-04)-F&Os from these reviews will be dispositionedin the LAR for Fire PRA impact 10 Catawba Fire PRA
*Full Scope Peer Review in 2010
*F&Os will be addressed in LAR
*NR/CR-6850/ EPRI 108239 methods used
*Fire Modeling methods per NR/CR-6850/ EPRI 108239 *Removed credit for electrical cabinet treatment refinement
*Well sealed Motor Control Centers 11 CNS Deviations from NRC-Accepted FPRA MethodsMethods*Credit for administrative  controls (transients)
*Credit for hot short duration failure probabilities for DC circuits 12 Catawba Fire PRA SensitivitiesSensitivityFPRA CDF/LERFVFDR RiskCredit for Admin Controls (Transients)YesYesIgnition Frequency (FAQ-48)YesYesHot Short Duration (DC)YesNo
: 11) It is not practical to vary the hot short duration credit for the deterministic variant and deterministic compliant case for each fire area; however, the impact on VFDR Risk may be estimated from the overall impact on FPRA CDF/LERF and the scope of VFDRs.
13 Catawba Project Summary
*NUREG-0800 non-compliances identified
-Compensatory actions implemented as needed
*NRC Fire Protection Triennial Inspection
-Scheduled for April 2013 14 McGuire Nuclear Station 15 McGuire Project Status
*Traditional Fire Protection Elements
-AttachmentL
-NFPA805Chapter3RequirementsforApprovalAttachment L NFPA 805 Chapter 3 Requirements for Approval (10CFR50.48(c)(2)(vii)
*Approval for existing wiring above the control room ceiling
*Reactor Coolant Pump Oil Misting
-No Attachment T requests  -Clarification of Prior NRC Approvals
*FRE status
-FPRA Quantification CompleteFPRAQuantificationComplete
*MNS meets the requirements of acceptability for RG-1.174
-FRE Defense-in-Depth review complete
-Recover y Action y*Local Trip of Reactor Coolant Pumps
*Local throttling of Emergency FeedwaterFlow
*Local operation of the PressurizerHeaters 16 McGuire Project Status (continued)
*LAR development in progress
*Proposed Modifications
-Eliminate spurious operation of TDEFWP Suction Valve
-Modify condensate drain from containment to improve overall LERF
*CompletedModifications
*Completed Modifications
-Current Transformer Modification
-PressurizerHeaterModificationPressurizerHeater Modification 17 McGuire PRA
*InternalEventsInternal Events-NEI 00-02 Internal Events Peer Review October 2000
-Internal Gap Assessment to ASME/ANS PRA standard as endorsed by RG 1.200
*Performed in 2008
*PerformedtoRG1200Revision1
*Performed to RG 1.200 Revision 1-LAR technical adequacy statement will address any deltas to RG 1.200 Revision 2FocusedLERFPeerReviewinDecember2012(NEI05 04)-Focused LERF Peer Review in December 2012 (NEI 05-04)-F&Os from these reviews will be dispositionedin the LAR for fire PRA impact 18 McGuire Fire PRA
*Full Scope Peer Review in 2009
*F&Os will be addressed in LAR
*NR/CR-6850/ EPRI 108239 methods used
*Fire Modeling methods per NR/CR-6850/ EPRI 108239 *Removed credit for electrical cabinet treatment refinement
*Well sealed Motor Control Centers 19 MNS Deviations from NRC-Accepted FPRA MethodsMethods*Credit for hot short duration failure probabilities for DCii DC c ircu i ts 20 McGuire Fire PRA SensitivitiesSensitivityFPRA CDF/LERFVFDR RiskHot Short Duration (DC)YesNo 1 ()Ignition Frequency (FAQ-48)YesYes1) It is not practical to vary the hot short duration credit for the deterministic variant and deterministic compliant case for each fire area; however, the impact on VFDR Risk may be estimated from the overall impact on FPRA CDF/LERF and the scope of VFDRs.
21 McGuire Project Summary
*Appendix R non-compliances identified  
-Compensatory actions implemented as needed
*Completed NRC Fire Protection Triennial Inspection
-February 2013
-No significant findings 22 Robinson Nuclear Plant 23 Robinson Project Status
*Traditional Fire protection Elements
-AttachmentL
-NFPA805Chapter3RequirementsforApprovalAttachment L -NFPA 805 Chapter 3 Requirements for Approval (10CFR50.48(c)(2)(vii)
*Approval for existing wiring above control room ceiling
-No Attachment T re quests -Clarification of Prior NRC A pprovals q pp*FSA development starting in late April
-FRE is performed as part of FSA development
-Defense-in-Depthactionsinreview
-Defense-in-Depth actions in review-FPRA Quantification Revision in Process
*RNP meets the requirements of acceptability for RG-1.174
*LARDevelopmentStartinginMay
*LAR Development Starting in May*Modifications
-Potential Modifications Identified
-Final Scope After Fire PRA and FSAs are Completed 24 Robinson Proposed Modifications
*Incipient Detection
*Protect MOVs from IN 92-18 Hot Short Failure
*Electrically Coordinate Power Supplies
*HEAF mitigation modification in E1/E2 Switchgear room*Protect Shutdown Valves
*Credit 4 thTrain of AFW
*Credit Westinghouse RCP Shutdown Seal
*Credit the Diesel Generators on the DeepwellPumps 25 Robinson Completed ModificationsAuto Start/Auto Load of Dedicated Shutdown Diesel Generator on Loss of All AC Power Auto Reload of Battery Chargers on a LOOPBackup Instrument Air for Charging Pumps Speed Control PressurizerPORV & Char g in g Pum p Make-u p Modificationggp pReplacement of HemycFire Barrier Wrap Emergency Lighting Modifications Evaluation and Modifications of the MOVs for IN92-18Installation of Fire Walls Between Transformers and Between Transformers And Turbine Building Ke y Locked Isolation Switch in Control Room to Isolate DC Electrical Power to Ke y yyAuxiliary Panels Protect the E-Bus Incoming Line Breakers from Spurious Operations for a Postulated Fire in the Turbine Bldg. Cable Rerouting to Protect Safe Shutdown Equipment 26 Robinson PRA
*Internal Events
-Full Scope ASME/ANS PRA Standard Peer Review in October 2009
-F&Oswillbe dispositionedintheLARforfirePRAimpact
-F&Os will be dispositioned in the LAR for fire PRA impact 27 Robinson Fire PRA Overview
*Full Scope Peer Review in 2013
*F&Os being addressed in FPRA revision
-Documented in LAR
*NR/CR-6850/ EPRI 108239 methods used 28 Robinson Fire PRA Overview (Continued)(Continued)
*Credit taken for Flame Retardant Coatin g g-IntumasticInstalled on Thermoplastic Cable
*Unit 2 Cable Spread Room (CSR)/2Sih*E1/E 2 S w i tc hgear Room*Incipient Detection InCabinetInstallationCreditperFAQ08 0046-In-Cabinet Installation -Credit per FAQ 08-0046*Main Control Boards
*I & C Racks
*Safeguards Cabinets
-Area Wide -Normal Detection Credit
*Unit2CableSpreadRoom
*Unit 2 Cable Spread Room 29 RNP Deviations from NRC-Accepted FPRAMethods FPRA Methods*For closed-cabinet MCCs:
-A severity factor of 0.1 is applied, where 90% of fires are contained within the MCC
-HRRseverityfactorsaretreatedindependentlysimilarto
-HRR severity factors are treated independently , similar to other cabinets
-Method was used to Address RAI 5-32 for the HNP NFPA 805 Application
*BNP LAR Audit RAIs under evaluation for applicability tRNP a t RNP 30 Robinson Fire PRA SensitivitiesSensitivityFPRA CDF/LERFVFDR RiskCPT credit for spurious failuresYesYesIitiF(FAQ 48)Y Y I gniti on F requency (FAQ-48)Y es Y esIncipient Detection (FAQ-46)YesYes 31 Robinson PRA Considerations
*Re-evaluate treatment of 480V Switchgear
-Amptectorsare used at RNP on E1/E2 Switchgears
-Reviewing HEAF data for 480V SwitchgearNotagenericisse
-Not a generic iss u e 32 Robinson Project Summary
*Developing committed modifications final scope and hdli sc h e d u li ng*Appendix R non-compliances identified lddd-Compensatory actions imp lemente d as nee d e d*Completed NRC Fire Protection Triennial InspectionNb2012-N ovem b er 2012-No significant findings 33 Questions 34}}

Revision as of 15:40, 17 July 2018

Fleet Fire Protection Program NFPA 805 National Fire Protection Association NFPA 805 Pre-LAR Application for CNS, MNS, Rnp
ML13127A080
Person / Time
Site: Mcguire, Catawba, Robinson, McGuire  Duke Energy icon.png
Issue date: 04/18/2013
From: Ertman J, Goforth D
Duke Energy Corp
To: Billoch-Colon A T
Plant Licensing Branch II
Billoch-Colon A T
Shared Package
ML13127A050 List:
References
TAC MF0956
Download: ML13127A080 (34)


Text

Fleet Fire Protection Pro gram gNFPA 805National Fire Protection AssociationNFPA 805 Pre-LAR Application for CNS, MNS, RNPJefferyErtmanDavidGoforth

-NFPA805ProjectManagersJeffery Ertman , David Goforth -NFPA 805 Project ManagersApril 18, 2013 Agenda*NFPA 805 Transition Pro ject Overview j*License Amendment Request Overview

  • Fire PRA Overview 2

Participants

  • Jeffery Ertman-NFPA 805 Project ManagerDidGfthNFPA805PjtM
  • D av id G o f or th -NFPA 805 P ro j ec t Manager*Donna Alexander -Manager Fleet Regulatory Affairs
  • BobRishel-PRAManager Bob Rishel PRA Manager*Jeff Robertson -Manager Regulatory Affairs
  • Julius Br yant -Re gulator y Affairs y gy*Sarah Chisholm -PRA Engineer
  • Kelly Lavin -Site Technical Lead
  • Al Maysam

-Regulatory Affairs

  • Jamie McCrory -PRA EngineerBdiWPRAEi*Bran di Weaver -PRA E ng i neer 3 Acronyms*AFW -Alternate Feed Water
  • CNS-CatawbaNuclearStation
  • MNS -McGuire Nuclear Station
  • MOV-MotorOperatedValve CNS Catawba Nuclear Station*CPT -Control Power Transformer
  • CSR -Cable Spreading Room
  • FAQ -Frequently Asked QuestionMOV Motor Operated Valve*NEI -Nuclear Energy Institute
  • NRC -Nuclear Regulatory Commission
  • OE -Operating Experience
  • FRE -Fire Risk Evaluation
  • FSA -Fire Safety Analysis F&OFtdObti*PORV -Power Operated Relief Valve
  • RAI -Request for Additional Information
  • RCP -Reactor Coolant Pump RNPRbiNlPlt*F&O -F ac t s an d Observa ti ons*HEAF -High Energy Arcing Fault
  • HRR -Heat Release Rate
  • LAR-LicenseAmendmentRequest
  • RNP -R o bi nson N uc l ear Pl an t*SSA -Safe Shutdown Analysis
  • TDEFWP -Turbine Driven Emergency FeedwaterPump LAR License Amendment Request*LERF -Large Early Release Frequency
  • LOOP -Loss of Offsite Power
  • UAM -Un-reviewed Analytical Method
  • VFDR -Variance From Deterministic Requirements 4

Fleet Transition to NFPA 805MilestonesCNSMNSRNP LAR09/30/201309/30/201309/30/2013SafetyEvaluation09/30/201509/30/201509/30/2015NFPA 805 Program Implementation03/31/201603/31/201603/31/2016 5

LAR Document Submittal

  • Using Current Industry LAR Template

-NEI Incorporating Generic RAIs

  • Incorporating Lessons Learned

-Current Generic RAIs

-Current Industry NFPA 805 LAR Submittals and RAIsInternalOEfrompreviousplantsubmittalsreviewsand

-Internal OE from previous plant submittals , reviews , and implementation 6

Catawba Nuclear Station 7

Catawba Project Status

  • Traditional Fire Protection Elements

-AttachmentL

-NFPA805Chapter3RequirementsforApprovalAttachment L NFPA 805 Chapter 3 Requirements for Approval (10CFR50.48(c)(2)(vii)

  • Approval for existing wiring above the control room ceiling
  • ReactorCoolantPumpOilMistingReactor Coolant Pump Oil Misting-No Attachment T requests -Clarification of Prior NRC Approvals
  • FRE status fl-FPRA Quanti fication Comp lete*CNS meets the requirements of acceptability for RG-1.174

-Defense-in-Depth actions in review

-Recovery Action

  • Local throttling of Emergency FeedwaterFlow 8

Catawba Project Status (continued)

  • LAR development started
  • Proposed Modifications

-Breaker Coordination modifications

-Inverter cable re-route

-VCT Outlet Valve spurious closure issue resolved by modificationmodification

-Additional modifications may result from FRE DID review or Chapter 3 required systems code review

  • Completed Modifications

-4 Breaker Coordination modifications 9

Catawba PRA

  • InternalEventsInternal Events-NEI 00-02 Internal Events Peer Review March 2002

-Internal Gap Assessment to ASME/ANS PRA Standard as endorsed by RG 1.200

  • Performed in 2008
  • PerformedtoRG1200Revision1
  • Performed to RG 1.200 Revision 1-LAR technical adequacy statement will address any deltas to RG 1.200 Revision 2FocusedLERFPeerReviewinDecember2012(NEI05 04)-Focused LERF Peer Review in December 2012 (NEI 05-04)-F&Os from these reviews will be dispositionedin the LAR for Fire PRA impact 10 Catawba Fire PRA
  • Full Scope Peer Review in 2010
  • F&Os will be addressed in LAR
  • NR/CR-6850/ EPRI 108239 methods used
  • Fire Modeling methods per NR/CR-6850/ EPRI 108239 *Removed credit for electrical cabinet treatment refinement
  • Well sealed Motor Control Centers 11 CNS Deviations from NRC-Accepted FPRA MethodsMethods*Credit for administrative controls (transients)
  • Credit for hot short duration failure probabilities for DC circuits 12 Catawba Fire PRA SensitivitiesSensitivityFPRA CDF/LERFVFDR RiskCredit for Admin Controls (Transients)YesYesIgnition Frequency (FAQ-48)YesYesHot Short Duration (DC)YesNo
11) It is not practical to vary the hot short duration credit for the deterministic variant and deterministic compliant case for each fire area; however, the impact on VFDR Risk may be estimated from the overall impact on FPRA CDF/LERF and the scope of VFDRs.

13 Catawba Project Summary

  • NUREG-0800 non-compliances identified

-Compensatory actions implemented as needed

  • NRC Fire Protection Triennial Inspection

-Scheduled for April 2013 14 McGuire Nuclear Station 15 McGuire Project Status

  • Traditional Fire Protection Elements

-AttachmentL

-NFPA805Chapter3RequirementsforApprovalAttachment L NFPA 805 Chapter 3 Requirements for Approval (10CFR50.48(c)(2)(vii)

  • Approval for existing wiring above the control room ceiling
  • Reactor Coolant Pump Oil Misting

-No Attachment T requests -Clarification of Prior NRC Approvals

  • FRE status

-FPRA Quantification CompleteFPRAQuantificationComplete

  • MNS meets the requirements of acceptability for RG-1.174

-FRE Defense-in-Depth review complete

-Recover y Action y*Local Trip of Reactor Coolant Pumps

  • Local throttling of Emergency FeedwaterFlow
  • Local operation of the PressurizerHeaters 16 McGuire Project Status (continued)
  • LAR development in progress
  • Proposed Modifications

-Eliminate spurious operation of TDEFWP Suction Valve

-Modify condensate drain from containment to improve overall LERF

  • CompletedModifications
  • Completed Modifications

-Current Transformer Modification

-PressurizerHeaterModificationPressurizerHeater Modification 17 McGuire PRA

  • InternalEventsInternal Events-NEI 00-02 Internal Events Peer Review October 2000

-Internal Gap Assessment to ASME/ANS PRA standard as endorsed by RG 1.200

  • Performed in 2008
  • PerformedtoRG1200Revision1
  • Performed to RG 1.200 Revision 1-LAR technical adequacy statement will address any deltas to RG 1.200 Revision 2FocusedLERFPeerReviewinDecember2012(NEI05 04)-Focused LERF Peer Review in December 2012 (NEI 05-04)-F&Os from these reviews will be dispositionedin the LAR for fire PRA impact 18 McGuire Fire PRA
  • Full Scope Peer Review in 2009
  • F&Os will be addressed in LAR
  • NR/CR-6850/ EPRI 108239 methods used
  • Fire Modeling methods per NR/CR-6850/ EPRI 108239 *Removed credit for electrical cabinet treatment refinement
  • Well sealed Motor Control Centers 19 MNS Deviations from NRC-Accepted FPRA MethodsMethods*Credit for hot short duration failure probabilities for DCii DC c ircu i ts 20 McGuire Fire PRA SensitivitiesSensitivityFPRA CDF/LERFVFDR RiskHot Short Duration (DC)YesNo 1 ()Ignition Frequency (FAQ-48)YesYes1) It is not practical to vary the hot short duration credit for the deterministic variant and deterministic compliant case for each fire area; however, the impact on VFDR Risk may be estimated from the overall impact on FPRA CDF/LERF and the scope of VFDRs.

21 McGuire Project Summary

  • Appendix R non-compliances identified

-Compensatory actions implemented as needed

  • Completed NRC Fire Protection Triennial Inspection

-February 2013

-No significant findings 22 Robinson Nuclear Plant 23 Robinson Project Status

  • Traditional Fire protection Elements

-AttachmentL

-NFPA805Chapter3RequirementsforApprovalAttachment L -NFPA 805 Chapter 3 Requirements for Approval (10CFR50.48(c)(2)(vii)

  • Approval for existing wiring above control room ceiling

-No Attachment T re quests -Clarification of Prior NRC A pprovals q pp*FSA development starting in late April

-FRE is performed as part of FSA development

-Defense-in-Depthactionsinreview

-Defense-in-Depth actions in review-FPRA Quantification Revision in Process

  • RNP meets the requirements of acceptability for RG-1.174
  • LARDevelopmentStartinginMay
  • LAR Development Starting in May*Modifications

-Potential Modifications Identified

-Final Scope After Fire PRA and FSAs are Completed 24 Robinson Proposed Modifications

  • Incipient Detection
  • Electrically Coordinate Power Supplies
  • HEAF mitigation modification in E1/E2 Switchgear room*Protect Shutdown Valves
  • Credit 4 thTrain of AFW
  • Credit Westinghouse RCP Shutdown Seal
  • Credit the Diesel Generators on the DeepwellPumps 25 Robinson Completed ModificationsAuto Start/Auto Load of Dedicated Shutdown Diesel Generator on Loss of All AC Power Auto Reload of Battery Chargers on a LOOPBackup Instrument Air for Charging Pumps Speed Control PressurizerPORV & Char g in g Pum p Make-u p Modificationggp pReplacement of HemycFire Barrier Wrap Emergency Lighting Modifications Evaluation and Modifications of the MOVs for IN92-18Installation of Fire Walls Between Transformers and Between Transformers And Turbine Building Ke y Locked Isolation Switch in Control Room to Isolate DC Electrical Power to Ke y yyAuxiliary Panels Protect the E-Bus Incoming Line Breakers from Spurious Operations for a Postulated Fire in the Turbine Bldg. Cable Rerouting to Protect Safe Shutdown Equipment 26 Robinson PRA
  • Internal Events

-Full Scope ASME/ANS PRA Standard Peer Review in October 2009

-F&Oswillbe dispositionedintheLARforfirePRAimpact

-F&Os will be dispositioned in the LAR for fire PRA impact 27 Robinson Fire PRA Overview

  • Full Scope Peer Review in 2013
  • F&Os being addressed in FPRA revision

-Documented in LAR

  • NR/CR-6850/ EPRI 108239 methods used 28 Robinson Fire PRA Overview (Continued)(Continued)
  • Credit taken for Flame Retardant Coatin g g-IntumasticInstalled on Thermoplastic Cable
  • Unit 2 Cable Spread Room (CSR)/2Sih*E1/E 2 S w i tc hgear Room*Incipient Detection InCabinetInstallationCreditperFAQ08 0046-In-Cabinet Installation -Credit per FAQ 08-0046*Main Control Boards
  • I & C Racks
  • Safeguards Cabinets

-Area Wide -Normal Detection Credit

  • Unit2CableSpreadRoom
  • Unit 2 Cable Spread Room 29 RNP Deviations from NRC-Accepted FPRAMethods FPRA Methods*For closed-cabinet MCCs:

-A severity factor of 0.1 is applied, where 90% of fires are contained within the MCC

-HRRseverityfactorsaretreatedindependentlysimilarto

-HRR severity factors are treated independently , similar to other cabinets

-Method was used to Address RAI 5-32 for the HNP NFPA 805 Application

  • BNP LAR Audit RAIs under evaluation for applicability tRNP a t RNP 30 Robinson Fire PRA SensitivitiesSensitivityFPRA CDF/LERFVFDR RiskCPT credit for spurious failuresYesYesIitiF(FAQ 48)Y Y I gniti on F requency (FAQ-48)Y es Y esIncipient Detection (FAQ-46)YesYes 31 Robinson PRA Considerations
  • Re-evaluate treatment of 480V Switchgear

-Amptectorsare used at RNP on E1/E2 Switchgears

-Reviewing HEAF data for 480V SwitchgearNotagenericisse

-Not a generic iss u e 32 Robinson Project Summary

  • Developing committed modifications final scope and hdli sc h e d u li ng*Appendix R non-compliances identified lddd-Compensatory actions imp lemente d as nee d e d*Completed NRC Fire Protection Triennial InspectionNb2012-N ovem b er 2012-No significant findings 33 Questions 34