ML21013A337

Risk-Informed Allowed Outage Time (Riaot) License Amendment Request -NRC Pre-Submittal Meeting, Licensee Slide Presentation, December 17, 2020 EPID L-2020-LRM-0110

ML21013A337
Person / Time
Site:	Waterford
Issue date:	12/17/2020
From:	Gaston R Entergy Operations
To:	Audrey Klett NRC/NRR/DORL/LPL4
Klett A
Shared Package
ML21013A344	List: ML21013A336 ML21013A337
References
EPID L-2020-LRM-0110
Download: ML21013A337 (20)

Text

Waterford 3 Risk-Informed Allowed Outage Time (RIAOT)

License Amendment Request NRC Pre-submittal Meeting December 17, 2020

Participants Entergy

• Ron Gaston, Director Fleet Regulatory Assurance

• Paul Wood, Waterford 3 Manager, Regulatory Assurance

• Billy Steelman, Waterford 3 Manager, Design Engineering

• Richard French, Waterford 3 Project Manager

• Wes Johnson, Corporate PRA Supervisor

• Mark Thigpen, Waterford 3 PRA Engineer

• Remy DeVoe, Waterford 3 Regulatory Assurance

• Alan Harris, Jensen Hughes, Licensing Consultant

• Andy Spotts, Jensen Hughes, PRA Consultant 2

Agenda Introduction/Opening Remarks Waterford 3 LAR Overview TSTF-505 Revision 2

• Waterford 3 Applicability Technical Specifications (TS) to Include Probabilistic Risk Assessment (PRA) Status Schedule Closing Remarks

• TECHNICAL SPECIFICATIONS TASK FORCE TRAVELER TSTF-505, REVISION 2 PROVIDE RISK-INFORMED EXTENDED COMPLETION TIMES - RITSTF INITIATIVE 4B 3

Waterford 3 LAR Overview TSTF-505 Revision 2 Revision 2 issued November 2018 Removes provision for total loss of function Less detailed explanations provided on why certain Limited Conditions for Operation (LCOs) are excluded from previous revisions.

Section 2.3 scope criterion 18 referenced in LAR for site-specific LCOs:

Restored to OPERABLE Channel placed in TRIP Isolate Inoperable isolation valve 4

Waterford 3 Applicability Waterford 3 is a Combustion Engineering Custom Tech Spec plant.

Many LCOs match NUREG-1432 Revision 4, Standard Technical Specifications - Combustion Engineering Plants Some LCOs have corresponding LCOs in Standard Technical Specification (STS), with minor differences Some LCOs are site-specific with no STS counterpart 5

Technical Specifications (TS) to Include The following slides will show which TS are in the scope of LAR, separated into 4 groups:

1. Identical or nearly Identical to LCO in scope of TSTF-505 Rev 2.

2. LCO in scope of TSTF-505 Rev 2, with some differences, while still meeting scope criteria

3. LCO is excluded from scope of TSTF-505 Rev 2, but reason for exclusion does not apply to Waterford 3 LCO.( for example, 30 day completion time in STS)

4. Waterford 3 site specific LCO that meets criteria 6

Technical Specifications (TS) to Include Identical or nearly Identical to LCO in scope of TSTF-505 Rev 2.

Technical Specification LCO Title LCO 3.4.3.1 Pressurizer 3.5.2 ECCS Subsystems - Modes 1, 2, and 3 3.7.1.5 Main Steam Line Isolation Valves (MSIVs) 3.7.12 Essential Services Chilled Water System 7

Technical Specifications (TS) to Include Identical or nearly Identical to LCO in scope of TSTF-505 Rev 2 (EXAMPLE) 8

Technical Specifications (TS) to Include LCO in scope of TSTF-505 Rev 2, with some differences, while still meeting scope criteria Technical Specification LCO Title LCO 3.3.1 Reactor Protective Instrumentation Engineered Safety Features Actuation System 3.3.2 Instrumentation 3.6.1.3 Containment Air Locks 3.6.1.7 Containment Ventilation System 3.6.3 Containment Isolation Valves 3.6.2.1 Containment Spray System 3.6.2.2 Containment Cooling 3.7.1.2 Emergency Feedwater System 3.7.1.7 Atmospheric Dump Valves Component Cooling Water and Auxiliary Component 3.7.3 Cooling Water Systems 3.8.1.1 A.C. Sources 3.8.2.1 D.C. Sources 3.8.3.1 Onsite Power Distribution Systems 9

Technical Specifications (TS) to Include LCO in scope of TSTF-505 Rev 2, with some differences, while still meeting scope criteria-EXAMPLE 10

Technical Specifications (TS) to Include LCO is excluded from scope of TSTF-505 Rev 2, but reason for exclusion does not apply to Waterford 3 LCO.

Technical Specification LCO Title LCO 3.7.1.3 Condensate Storage Pool 3.7.6.1 Control Room Emergency Air Filtration System 3.7.6.3 Control Room Air Temperature - Operating 11

Technical Specifications (TS) to Include LCO is excluded from scope of TSTF-505 Rev 2, but reason for exclusion does not apply to Waterford 3 LCO.-EXAMPLE 12

Technical Specifications (TS) to Include Waterford 3 site specific LCO that meets criteria Technical Specification LCO Title LCO 3.4.3.2 Auxiliary Spray 3.7.1.6 Main Feedwater Isolation Valves 3.7.4 Ultimate Heat Sink 13

Technical Specifications (TS) to Include Waterford 3 site specific LCO that meets criteria-EXAMPLE 14

Technical Specifications (TS) to Include Waterford 3 site specific LCO that meets criteria-EXAMPLE 15

Technical Specifications (TS) to Include Complete List of TS included in LAR Technical LCO Title Specification LCO 3.3.1 Reactor Protective Instrumentation 3.3.2 Engineered Safety Features Actuation System Instrumentation 3.4.3.1 Pressurizer 3.4.3.2 Auxiliary Spray 3.5.2 ECCS Subsystems - Modes 1, 2, and 3 3.6.1.3 Containment Air Locks 3.6.1.7 Containment Ventilation System 3.6.3 Containment Isolation Valves 3.6.2.1 Containment Spray System 3.6.2.2 Containment Cooling 3.7.1.2 Emergency Feedwater System 3.7.1.3 Condensate Storage Pool 3.7.1.5 Main Steam Line Isolation Valves (MSIVs) 3.7.1.6 Main Feedwater Isolation Valves 3.7.1.7 Atmospheric Dump Valves 3.7.3 Component Cooling Water and Auxiliary Component Cooling Water Systems 3.7.4 Ultimate Heat Sink 3.7.6.1 Control Room Emergency Air Filtration System 3.7.6.3 Control Room Air Temperature - Operating 3.7.12 Essential Services Chilled Water System 3.8.1.1 A.C. Sources 3.8.2.1 D.C. Sources 3.8.3.1 Onsite Power Distribution Systems 16

Probabilistic Risk Analyses (PRA) Status PRA Peer Reviews RG 1.200 PRA Peer Review (Westinghouse Owners Group August 2009).

Fire PRA Peer Review Against Section 4 of the ASME/ANS Standard (Westinghouse Owners Group February 2011)

Focused Scope Fire PRA Peer Review Against Section 4 of the ASME/ANS Standard (URS Corporation - September 2012) 2nd Focused Scope Fire PRA Peer Review of Fire PRA Against Section 4 of the ASME/ANS Standard (URS Corporation - May 2013)

Waterford 3 Finding Level F&O Independent Technical Review (October 2017)

Waterford 3 Internal Flood/LERF Focused Scope Peer Review (August 2019) 17

Probabilistic Risk Analyses (PRA) Status PRA Baseline Values Baseline Baseline Hazard Model CDF LERF At Power Rev6 3.03E-06 3.04E-08 Internal Events Internal Fire Rev6 Fire 2.01E-05 2.05E-07 Internal Flood Rev6 Flood 1.49E-06 7.47E-09 Seismic Bounding Estimate 3.20E-06 3.20E-07 Total 2.78E-05 5.63 E-07 18

Schedule Schedule Plan to submit LAR January 2021 Requesting 12 month approval 19

Closing Remarks