ML15148A263

Meeting Slides from the May 27, 2015 Oconee Major Projects Between Duke Energy and NRC

ML15148A263
Person / Time
Site:	Oconee
Issue date:	05/27/2015
From:	Duke Energy Carolinas
To:	Plant Licensing Branch II
Whited J
References
Download: ML15148A263 (80)

Text

Oconee Nuclear Station Major Projects Update Meeting May 27, 2015

Duke Participants Bill Pitesa - Senior Vice President and Chief Nuclear Officer Preston Gillespie - Senior Vice President Scott Batson - Site Vice President Tom Ray - Plant Manager Ed Burchfield - General Manager, Nuclear Engineering Dave Baxter - General Manager, Significant Regulatory Projects Scott Lynch - Senior Project Director, PSW Project Carrie Dunton - Director, Site Support Dana Jones - Manager, Fukushima Response Doug Phelps - Director, Critical Systems Engineering Terry Patterson - Director, Organization Effectiveness Chris Nolan - Manager, Fleet Regulatory Affairs For Information Only 2

Agenda Opening Remarks Scott Batson Protected Service Water (PSW) Scott Lynch National Fire Protection Association (NFPA) 805 Ed Burchfield Keowee Hydro Upgrades Doug Phelps Tornado/High Energy Line Break (HELB)/ Dave Baxter Main Steam Relief Valves (MSIVs)

Significant NRC Commitments Terry Patterson Fukushima Dana Jones External Flooding Dave Baxter Upcoming Regulatory Submittals Carrie Dunton Closing Remarks Preston Gillespie / Bill Pitesa For Information Only 3

Opening Remarks Scott Batson Site Vice President, Oconee Nuclear Station For Information Only 4

PSW Scott Lynch Senior Project Director, PSW Project For Information Only 5

PSW - Milestone Summary Update Completed Milestones:

Milestone 1 - Commercial Power Path to Standby Shutdown Facility Milestone 2 - Power Path from Keowee Hydro Milestone 3 - Power Path from PSW to High Pressure Injection (HPI) System Milestone 4 - Align PSW Pump to Steam Generators Remaining Milestones on track to meet required dates:

Milestone 5 - PSW System Complete - February 4, 2016 Milestone 6 - Satisfy the Requirements of NFPA 805 - November 15, 2016 For Information Only 6

PSW - Milestone 1 Milestone 1 - Commercial Power Path to Standby Shutdown Facility - Complete Completed Items Milestone 1 completed and turned over to Operations A Selected Licensee Commitment was implemented to track unavailability of PSW power via Maintenance Rule 13% estimated Fire Core Damage Frequency improvement Milestone 1 completion notification letter submitted to NRC on August 28, 2013 For Information Only 7

PSW - Milestone 1 PSW Building For Information Only 8

PSW - Milestone 1 PSW Building Switchgear For Information Only 9

PSW - Milestone 2 Milestone 2 - Power Path From Keowee Hydro - Complete Completed Items Milestone 2 completed and turned over to Operations The Selected Licensee Commitment was revised to add Keowee power path to the tracking mechanism for unavailability of PSW power via Maintenance Rule Additional 1% estimated Fire Core Damage Frequency improvement Milestone 2 completion notification letter submitted to NRC on December 12, 2013 For Information Only 10

PSW - Milestone 2 Keowee Switchgear Cabinet For Information Only 11

PSW - Milestone 3 Milestone 3 - Power Path From PSW to HPI System - Complete Completed Items Milestone 3 completed and turned over to Operations The Selected Licensee Commitment was revised to add HPI to the tracking mechanism for unavailability of PSW power via Maintenance Rule Additional 8% estimated Fire Core Damage Frequency improvement Milestone 3 completion notification letter submitted to NRC on July 7, 2014 For Information Only 12

PSW - Milestone 4 Milestone 4 - Align PSW Pump to Steam Generators - Complete Completed Items Milestone 4 completed and turned over to Operations Installation and integrated testing of the PSW system Unit 1 Steam Generators supplied by PSW during the fall 2014 Refueling Outage Installation and integrated testing of the Alternate Chilled Water (AWC) system A Selected Licensee Commitment was implemented to define PSW allowed outage times, required actions, and surveillance requirements Additional 15% estimated Fire Core Damage Frequency improvement Milestone 4 completion notification letter submitted to NRC on March 24, 2015 For Information Only 13

PSW - Milestone 4 Milestone 4 - NRC Inspection Results Onsite inspection began April 5, 2015; debrief conducted April 24, 2015 Inspectors identified discrepancies between the flow model and the as-built plant Response to Inspection Results Cause Evaluation initiated on flow model discrepancies Field-verified system dimensional data and configuration Validated flow coefficients, flow requirements, and resistance values Updated flow model to resolve as-built discrepancies On-site presence at vendor facility for flow model re-work Reevaluated design basis requirements for HPI motor coolers Follow-up onsite inspection began May 26, 2015 For Information Only 14

PSW - Milestone 4 PSW Pump Room PSW Booster Pump PSW Primary Pump For Information Only 15

PSW - AWC Mechanical/Civil AWC - Unit 1 East Penetration Room Piping For Information Only 16

PSW - AWC Chillers AWC Chillers For Information Only 17

PSW - Milestone 5 Milestone 5 - PSW System Completion - February 4, 2016 Scope Units 1, 2, and 3 Pressurizer Heater and Vital I&C Battery Charger Repowering from PSW Units 1, 2, and 3 Vital I&C Cable Reroutes Units 1, 2, and 3 Replace Pressurizer Heater Breaker Panels with Fuse Panels Units 1, 2, and 3 Vital I&C Battery Ventilation Fan Repowering For Information Only 18

PSW - Milestone 5 Milestone 5 - PSW System Completion - February 4, 2016 Completed Items Infrastructure installation (cable tray, supports, termination boxes, etc.)

Cable pulls to MCCs to provide PSW power to select Pressurizer Heaters Cable pulls to provide PSW power to Vital I&C Battery Chargers Unit 2 Vital I&C cable reroutes Unit 2 Pressurizer Heater Fuse Panel installation For Information Only 19

PSW - Milestone 5 Milestone 5 - PSW System Completion - February 4, 2016 In Progress Items Unit 1 Vital I&C cable reroutes Cable terminations in the PSW Building and Auxiliary Building Unit 1 Replacement of Pressurizer Heater breakers with fuses On track to meet February 4, 2016 completion date For Information Only 20

PSW - Milestone 6 Milestone 6 - Satisfy the Requirements of NFPA 805 - November 15, 2016 Transition License Conditions The Transition License Conditions will be discussed by Ed Burchfield in the NFPA 805 presentation For Information Only 21

NFPA 805 Ed Burchfield General Manager, Nuclear Engineering For Information Only 22

Estimated Fire CDF Impact of Each PSW Milestone Estimated Fire CDF Impact of Each Milestone For Information Only 23

NFPA 805 NFPA 805 Project Status NRC Safety Evaluation issued December 29, 2010 Program implemented January 1, 2013 All items on schedule Turbine Building / Auxiliary Building wall penetrations modifications completed Units 1 and 3 fire detection modifications completed Units 1, 2, and 3 Purge Inlet Room/West Penetration Room fire barrier modifications completed PSW Milestones 1-4 completed For Information Only 24

NFPA 805 Remaining NFPA 805 Items to Complete Unit 2 fire detection modifications PSW Milestone 5 modifications PSW Milestone 6 Incorporate the PSW modifications into site documents Update the fire PRA with as-built data Confirm that the as-built risk decrease from installation of PSW bounds the transition risk Complete the analysis of non-power operation fire impacts For Information Only 25

NFPA 805 Ongoing Actions until PSW modifications are complete Fire watches for Appendix R non-compliances Additional prudent fire risk reduction compensatory actions Oconees fire safety has benefited from the implementation of NFPA 805 and PSW For Information Only 26

Keowee Hydro Upgrades Doug Phelps Director, Critical Systems Engineering For Information Only 27

Keowee Hydro Upgrades Keowee Hydro Station commissioned in 1971 Previous Major Maintenance and Refurbishment Upgrades 1979 - Weld repair of turbine blades for each KHU 1987 - Keowee Hydro Unit (KHU) -1 generator stator maintenance 1994 - Keowee transformer upgrade 2004 & 2005 for each KHU - Turbine refurbishment; governor, voltage regulator, battery replacements 2008-2009 preventative maintenance inspections identified aging mechanisms in rotor pole assemblies 2009 Duke Energy started planning efforts to refurbish/overhaul both Keowee generators Refurbished/replaced all 56 generator field poles on each KHU KHU-2 completed February 28, 2014 KHU-1 completed August 1, 2014 For Information Only 28

Keowee Hydro Upgrades Planned Upgrades Online Monitoring System Provides real time and trend monitoring of turbine/generator Installed during normal maintenance windows Operational in 2015 Governor Oil Pump Unloaders Replace mechanical unloaders with electric unloaders Resolves obsolescence issues Increases operating margin No unavailability to install, test during normal maintenance windows On track for 2016 For Information Only 29

Keowee Hydro Upgrades Planned Upgrades Keowee Main Step-up Transformer Replacement Contract issued to purchase Onsite October 2016 Install within allowed Technical Specification completion time Stator replacement for Keowee Unit 1 & 2 We are evaluating the feasibility to pre-build each stator on site and replace the entire stator Decreases outage duration Allows for testing of new stator prior to entering outage License Amendment Request (LAR) required is very similar to Generator Rotor Pole Project Planning pre-submittal meeting in 3rd quarter 2015 For Information Only 30

Tornado/HELB/MSIVs Dave Baxter General Manager, Significant Regulatory Projects For Information Only 31

Tornado/HELB/MSIVs Tornado Mitigation Activities Completed Completion of PSW Milestones 1-4 Milestone 1 - Commercial Power Path to Standby Shutdown Facility Milestone 2 - Power Path from Keowee Hydro Milestone 3 - Power Path from PSW to High Pressure Injection (HPI) System Milestone 4 - Align PSW Pump to Steam Generators For Information Only 32

Tornado/HELB/MSIVs Tornado Mitigation Activities Completed (continued)

Unit 3 Control Room North Wall SSF/CT-5 Trench Crossover SSF Diesel Generator Fuel Oil Vent Borated Water Storage Tank (BWST) Piping/Instrumentation Protection West Penetration Room (WPR) and Cask Decontamination Tank Room (CDTR)

Reinforced Siding and Fibrwrap Installation For Information Only 33

Tornado/HELB/MSIVs For Information Only 34

Tornado/HELB/MSIVs Unit 3 Control Room - North Wall Construction For Information Only 35

Tornado/HELB/MSIVs SSF Trench /

CT-5 Trench Crossover For Information Only 36

Tornado/HELB/MSIVs Unit 3 BWST Piping/Instrumentation Protection In Progress Photo Completed Photo For Information Only 37

Tornado/HELB/MSIVs WPR/CDTR Fibrwrap &

Steel Siding Installation For Information Only 38

Tornado/HELB/MSIVs High Energy Line Break Mitigation Activities Completed Completion of PSW Milestones 1-4 Milestone 1 - Commercial Power Path to Standby Shutdown Facility Milestone 2 - Power Path from Keowee Hydro Milestone 3 - Power Path from PSW to High Pressure Injection (HPI) System Milestone 4 - Align PSW Pump to Steam Generators Implementation of Main Steam and Main Feedwater piping located in the East Penetration Room (EPR) inspection program For Information Only 39

Tornado/HELB/MSIVs High Energy Line Break Mitigation Activities Completed (continued)

Initial inspection and repair of EPR electrical penetration termination enclosures Implementation of EPR electrical penetration termination enclosure inspection program Installation of EPR Flood Outlet Device and Flood Impoundment Walls Replacement of valves 2/3HP-1 & 2 to allow termination of a postulated letdown break outside containment Installation of reach rods to valves 1/3HP-103 & 107 to allow manual remote operation to terminate postulated High Pressure Injection Pump outlet breaks For Information Only 40

Tornado/HELB/MSIVs Unit 1 Flood Outlet Device For Information Only 41

Tornado/HELB/MSIVs Tornado/HELB/MSIV Current Activities Oconee Staff is fully engaged in implementing PSW, External Flood and Fukushima activities As we complete PSW implementation, we are refocusing on Tornado/HELB/MSIV activities Established new organization to support Tornado/HELB/MSIV Based on the complexity associated with installation of MSIVs, the new organization will begin a review of the project to determine any improvements/changes that may be needed to ensure the optimal solution is achieved to ensure appropriate design and viability of installation The final resolution will be selected based on the expectation that the three Oconee Units will operate for an extended period For Information Only 42

Tornado/HELB/MSIVs For Information Only 43

Tornado/HELB/MSIVs Remaining Tornado Mitigation Project Activities Modification to the SSF South End Double Doors for protection against tornado induced effects - scope, schedule and implementation date will be provided by September 30, 2015 Modification of the SSF North Trench for protection against tornado induced effects -

March 31, 2016 SSF Diesel Service Water Discharge for protection against tornado induced missiles -

March 31, 2016 For Information Only 44

Tornado/HELB/MSIVs Remaining Tornado Mitigation Project Activities (continued)

Modification of the Main Steam (MS) yard supports for protection of the MS lines from tornado induced missiles (U1 - Fall 2016; U2 - Fall 2015; U3 - Fall 2016)

Main Steam Isolation Valve (MSIV) / Atmospheric Dump Valve (ADV) Installation in Tornado Protected Enclosure (Implementation 1EOC31 in 2020; 2EOC30 in 2021; 3EOC31 in 2022)

Completion of PSW Milestone 5, PSW System Complete - February 4, 2016 For Information Only 45

Tornado/HELB/MSIVs Remaining HELB Project Activities Replacement of valves 1HP-1 & 2 to allow for termination of a postulated letdown break outside containment - Fall 2016 Installation of reach rods to valves 2HP-103 & 107 to allow for termination of postulated High Pressure Injection Pump outlet breaks - Fall 2015 Protection of Control Complex Heating, Ventilation, and Air Conditioning (HVAC) ductwork from postulated HELBs - Schedule to be determined upon receipt of HELB SER Modification to certain Turbine Building columns to mitigate potential damage following postulated HELBs - Schedule to be determined upon receipt of HELB SER For Information Only 46

Tornado/HELB/MSIVs Remaining HELB Project Activities (continued)

Replacement of Condenser Circulating Water (CCW) discharge stop gates - Schedule to be determined upon receipt of HELB SER Completion of PSW Milestone 5 Milestone 5 - PSW System Complete - February 4, 2016 Installation of Main Steam Isolation Valve (MSIV) / Atmospheric Dump Valve (ADV) in Tornado Protected Enclosure (Implementation 1EOC31 in 2020; 2EOC30 in 2021; 3EOC31 in 2022)

For Information Only 47

Tornado/HELB/MSIVs Licensing Tornado License Amendment Request and High Energy Line Break License Amendment Request deferred to focus on licensing PSW system Tornado and HELB LARs credit installation of MSIVs / ADVs PSW Safety Evaluation Report received from NRC on August 13, 2014 As we complete PSW implementation, we are refocusing on Tornado/HELB/MSIV activities For Information Only 48

Significant NRC Commitments Terry Patterson Director, Organization Effectiveness For Information Only 49

Significant NRC Commitments Oconee tracks NRC commitments in the Problem Identification Program (PIP) by assigning a unique flag to the Corrective Action On-going commitments are institutionalized in procedures or permanent plant modifications and any changes to the commitments are managed using the process outlined in NEI 99-04, Guidelines for Managing NRC Commitment Changes Oconee has open commitments being tracked in eight specific categories:

Tornado High Energy Line Break (HELB)

NFPA 805 including Protected Service Water (License Condition)

Fukushima Lessons Learned Cyber Security (Rule Implementation)

Reactor Vessel Internals Inspection Plan License Amendment Request (LAR)

AREVA LOCA Analysis Thermal Conductivity Anomaly LAR submittal for TSTF-523, Gas Accumulation in ECCS Systems For Information Only 50

Significant NRC Commitments The status of commitments in the 8 specific categories is as follows:

Tornado 23 of 30 commitments are complete Remaining 7 on-track High Energy Line Break 35 of 45 commitments are complete Remaining 10 on-track NFPA 805 Modifications 4 of 6 commitments are complete Remaining 2 on-track Remaining Fukushima Lessons Learned on-track For Information Only 51

Significant NRC Commitments The status of commitments in the 8 specific categories is as follows: (continued)

Cyber Security Program Plan submitted in response to NRC Revision to 10 CFR 73 consisted of nine specific milestones Milestones 1-7 complete Final 2 Milestones on-track Reactor Vessel Internals Inspection EPRI MRP adoption on-track AREVA LOCA Analysis Thermal Conductivity Error on-track NRC approved approach to GL 2008-01, Gas Accumulation, on-track For Information Only 52

Fukushima Dana Jones Manager, Fukushima Response For Information Only 53

Fukushima Implementation Schedule Fall 2014 Spring 2015 Fall 2015 Spring 2016 Fall 2016 McGuire 1 Brunswick 2 McGuire 2 Brunswick 1 Oconee 1 10/2014 4/2015 10/2015 4/2016 11/2016 Complete Complete Catawba 2 Oconee 2 Oconee 3 4/2015 11/2015 5/2016 Complete Harris Catawba 1 5/2015 12/2015 Complete Robinson 6/2015 In-Progress For Information Only 54

Fukushima Flexible and Diverse Mitigation Strategies (FLEX) 1 SSF - Phase 1 coping for T=0 event N 2 FLEX Building - multiple deployment paths 3 CTP supplies S/G feed inventory for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> 4a 3000 gpm portable pump - provides S/G feed to all units (Warning Time event) 4b 3000 gpm portable pump - provides S/G feed to all units (T=0 event) 5 2500 psi portable pump - provides RC make-up per unit (both events) 6a 600 VAC portable generator - re-powers each unit through XPSW 1,2,3 (T=0 event) 6b 120 VAC portable generator - re-powers each unit through various panelboards (Warning Time event) 7 Intake - inventory for indefinite coping (T=0 event) 8 CCW piping - inventory for S/G feed after CTP-1 (Warning Time event)

For Information Only 55

Fukushima Flexible and Diverse Mitigation Strategies (FLEX)

Flexible and Diverse Mitigation Strategies (FLEX)

Compliance Dates: 2EOC27 (Fall 2015); 3EOC28 (Spring 2016); 1EOC29 (Fall 2016) 2 Strategies based on type of external events T=0 strategy (uses SSF for Phase 1 coping; all events except upstream dam failure)

Warning Time Strategy (based on 2011 SE Jocassee Dam Failure - CAL)

Equipment Most major components are onsite Remaining major components have been ordered Physical Modification Status Online Modifications - Complete Outage Modifications Three on schedule to complete during 2EOC27, 3EOC28, and 1EOC29 For Information Only 56

Fukushima For Information Only 57

Fukushima For Information Only 58

Fukushima For Information Only 59

Fukushima Spent Fuel Pool Level Indication Spent Fuel Pool Level Indication Compliance Dates: 2EOC27 (Fall 2015) for Unit 1&2 shared SFP 3EOC28 (Spring 2016)

Providing wide-range level indication using Fleet-consistent approach: AREVA Through-Air Radar System 2 channels per pool with local indication as well as indication in the Control Rooms Factory Acceptance Testing complete Equipment onsite Implementation In-Progress on both pools On schedule for Fall 2015 implementation complete (both pools, Unit 1/2 and Unit 3)

For Information Only 60

Fukushima 50.54(f) Focus Areas: Seismic, EP, Flood Seismic Recommendation 2.3 Walkdowns Complete TI-188 Inspection Complete Recommendation 2.1 Updated Seismic Hazard Submittal Complete Oconee identified as Group 1 plant SPRA activities underway For Information Only 61

Fukushima 50.54(f) Focus Areas: Seismic, EP, Flood Emergency Preparedness (EP)

Communications Assessment complete; review of potential enhancements in-progress Staffing Phase 1 staffing study submittal complete Phase 2 staffing study complete - on schedule for June 2015 submittal Flood Recommendation 2.3 Walkdowns Complete TI-187 Inspection Complete For Information Only 62

Fukushima 50.54(f) Focus Areas: Seismic, EP, Flood Flood (continued)

Recommendation 2.1 Flood Hazard Reevaluation Complete Jocassee Dam Failure PMP/LIP Flood Hazard Reevaluation Report (FHRR) revision complete; submitted March 6, 2015 Flooding strategy Protection for flooding levels below the SSF Flood wall Mitigation for flooding levels above the SSF Flood wall Mitigation for indefinite coping capabilities Integrated Assessment on hold until COMSECY decision - NRC 6 month due date extension to September 12, 2015 Protection Modifications in progress; on schedule to complete 2016 For Information Only 63

External Flooding Dave Baxter General Manager, Significant Regulatory Projects For Information Only 64

External Flooding Modifications Jocassee Dam

1. Relocation of Back-up Power (FANT Line) - Completed

2. Discharge Diversion Wall - Completed

3. Turbine Building drain isolation - Completed

4. East slope scour protection - In Progress (complete Jul 2015)

5. Intake dike scour protection - In Progress (complete Dec 2015)

For Information Only 65

External Flooding Modifications Relocation of Back-up Power Path - Complete For Information Only 66

External Flooding Modifications Discharge Diversion Wall - Complete For Information Only 67

External Flooding Modifications Turbine Building Drain Isolation - Complete For Information Only 68

External Flooding Modifications Scour Protection - Plan View 7 11 5

6 4

3 12 Areas 5, 6, 7, 11 In Progress 2

Areas 3 & 4 Complete Areas 2 &12 Design Complete For Information Only 69

External Flooding Modifications Scour Protection - East Slope (Areas 3 & 4) - Complete For Information Only 70

External Flooding Modifications Scour Protection - East Slope (Areas 5, 6) in progress For Information Only 71

Flood Hazard Reevaluation Report (FHRR) Status FHRR Update Interim Actions for flooding have been inspected and remain in place Revised FHRR submitted March 6, 2015 Regulatory Path Forward letter submitted March 6, 2015 Weekly webinars between NRR/NRO and Duke in-progress FHRR Overview Seismic Dam Performance Hydraulic Modeling For Information Only 72

External Flooding Response Strategy Flooding Response Strategy - Defense-in-depth Bounding level Jocassee Dam failure - Mitigation Strategies deployed followed by:

Flooding with peak levels below site grade Plant SSCs provide feedwater and reactor coolant makeup SSF available to provide back up to plant SSCs Mitigation Strategies Flooding levels above site grade but below top of SSF flood walls Plant SSCs provide feedwater and reactor coolant makeup until plant SSCs are lost SSF is staffed and available SSF provides feedwater and reactor coolant makeup if normal SSCs lost Top of SSF Flood Wall Flooding levels above SSF flood walls Plant SSCs provide feedwater and reactor coolant makeup until plant SSCs are lost Physical SSF is staffed and available Barriers FHRR Level SSF provides feedwater and reactor coolant makeup when normal SSCs are lost When the SSF is lost, Mitigation Strategies are put into service providing Feedwater and reactor coolant makeup (diesel powered) Site Grade Instrumentation Spent fuel pool make-up For Information Only 73

Regulatory Path Forward Regulatory Path Forward Establish new Jocassee Dam failure licensing basis Based on updated Jocassee FHRR Flooding Analysis New Beyond Design Basis Event to be included in Oconee UFSAR Chapter 2 2011 SE Flooding Levels become the bounding dam failure flood Mitigation Strategies for flooding will address maximum flooding levels from 2011 SE Safety Evaluation for EA-12-049 to be incorporated in the site licensing basis UFSAR Chapter 3 Flooding modifications and response strategies Jocassee dam failures are considered to be Beyond Design Basis events Site modifications required to support protection and mitigation strategies completed - June 2016 Mitigation strategies as outlined in Final Integrated Plan (for EA-12-049) completed fall 2016 Ongoing CAL actions to be maintained after the CAL is closed For Information Only 74

Upcoming Regulatory Submittals Carrie Dunton Director, Site Support For Information Only 75

Upcoming Regulatory Submittals Planned License Amendment Submittals Adoption of NEI 99-01, Rev. 6 Emergency Action Limits TSTF-448, Control Room Habitability TSTF-523, Managing Gas Accumulation Gas Gap Release Fractions for High Burnup Fuel Add COPERNIC Fuel Performance Code to Tech Specs and Core Operating Limits Report Keowee Stator Replacement SSF Thermal Margin Self-approval for risk-informed Fire Protection Program Changes For Information Only 76

Regulatory Submittals Under Review License Amendment Submittals Currently Under NRC Review Adoption of MRP-227 (Reactor Vessel Internals Inspection)

Adoption of ASME OM Code Revision to Technical Specification 3.5.2 (High Pressure Injection)

Adoption of TSTF-513 (Reactor Coolant Leakage Monitoring Instrumentation)

Cyber Security Milestone 8 Adoption of TSTF-510 (Steam Generator Inspection Program)

Addition of a High Flux Trip for 3 Reactor Coolant Pump Operation For Information Only 77

Closing Remarks Preston Gillespie, Senior Vice President Bill Pitesa, Senior Vice President and Chief Nuclear Officer For Information Only 78

Acronyms ADV - Atmospheric Dump Valve LOCA - Loss of Coolant Accident AWC - Alternate Chilled Water MCC - Motor Control Center BWST - Borated Water Storage Tank MS - Main Steam CAL - Confirmatory Action Letter MSIV - Main Steam Isolation Valve CCW - Condenser Circulating Water NFPA - National Fire Protection Association CDF - Core Damage Frequency PMP - Probable Maximum Precipitation CDTR - Cask Decontamination Tank Room PRA - Probabilistic Risk Assessment CTP - Chemical Treatment Pond PSW - Protected Service Water EOC - End of Cycle RC - Reactor Coolant EPR - East Penetration Room SE - Safety Evaluation Report FHRR - Flood Hazard Reevaluation Report SFP - Spent Fuel Pool FLEX - Flexible & Diverse Mitigation Strategies S/G - Steam Generator HELB - High Energy Line Break SPRA - Seismic Probabilistic Risk Assessment HPI - High Pressure Injection SSF - Standby Shutdown Facility I&C - Instrumentation and Control UFSAR - Updated Final Safety Analysis Report KHU - Keowee Hydro Unit VAC - Volts Alternating Current LAR - License Amendment Request WPR - West Penetration Room LIP - Local Intense Precipitation For Information Only 79

80