ML18282A076

Regulatory Audit Report on the Probabilistic Risk Assessment, Severe Accident Evaluation, and Reliability Assurance Program of the APR1400 Design

ML18282A076
Person / Time
Issue date:	10/09/2018
From:	Hayes M NRC/NRO/DSRA/SPRA
To:	William Ward NRC/NRO/DLSE/LB2
Hanh Phan
Shared Package
ML18282A078	List: ML18282A076
References
Download: ML18282A076 (19)

Text

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October 9, 2018 MEMORANDUM TO: William R Ward, Project Manager Licensing Branch 2 Division of New Reactor Licensing Office of New Reactors FROM: Michelle W. Hayes, Chief /RA/

Probabilistic Risk Assessment and Severe Accidents Branch Division of Safety Systems, Risk Assessment and Advanced Reactors Office of New Reactors

SUBJECT:

REGULATORY AUDIT REPORT ON THE PROBABILISTIC RISK ASSESSMENT, SEVERE ACCIDENT EVALUATION, AND RELIABILITY ASSURANCE PROGRAM OF THE APR1400 DESIGN As part of its safety review of the design certification (DC) application from Korea Hydro and Nuclear Power Co., LTD (KHNP), the U.S. Nuclear Regulatory Commission (NRC) staff audited information supporting Chapters 17.4 and 19 of the final safety analysis report submitted with the application (ADAMS Accession No. ML15006A059). The staff specifically audited information related to the probabilistic risk assessment (PRA), severe accident evaluation (SAE), and reliability assurance program (RAP). In particular, the purpose of the audit was for the NRC staff to examine and evaluate documents that support responses to the staffs requests for additional information (RAIs).

The staff held an audit entrance meeting on April 15, 2015 at U.S. NRC Headquarters. The remainder of the audit was conducted remotely through the APR1400 electronic reading room (ERR). During the course of the audit, the staff reviewed documents in the ERR and conducted teleconferences and meetings with the applicant. The staff concluded the audit with an exit meeting on July 9, 2018.

The purpose of this audit was for the staff to: (1) gain an understanding of APR1400 PRA, SAE and RAP development to reach a reasonable assurance finding, (2) review related documentation and non-docketed information to evaluate conformance with the Standard CONTACT: Hanh K. Phan, NRO/DSRA (301) 415-3789

W. Ward 2 Review Plan and technical guidance, and (3) evaluate the quality and programmatic control process/procedures used by KHNP for PRA, SAE, and RAP.

Members of the audit team included the following NRC staff:

• Hanh Phan (NRO, Audit Lead)

• Malcolm Patterson (NRO)

• Lynn Mrowca (NRO/SPRA Branch Chief)

• Marie Pohida (NRO)

• Alissa Neuhausen (NRO)

• Odunayo Ayegbusi (NRO)

• Anne-Marie Grady (NRO)

• Robert Roche (NRO)

• Courtney St. Peters (NRO)

• Shawn Campbell (NRO)

• Donald Palmrose (NRO)

• Tony Nakanishi (NRO)

• Donnie Harrison (NRO)

• James Steckel (NRO, Project Manager)

• Hanry Wagage (NRO)

• Mark Lintz (NRO, Project Manager

• Jason Schaperow (NRO)

The staff interacted with the following individuals during audit discussions:

• Jiyong(Andy) Oh (KHNP)

• Youngki Kim (KEPCO-ENC)

• Horim Moon (KHNP)

• Robert Sweeney (KHNP/AECOM)

• James Ross (KHNP/AECOM)

• Robert Sisk (KHNP/WEC)

• Jaegap Kim (KEPCO-ENC)

• Jeong Kwan Suh (KHNP)

• Teahee Hwang (KEPCO-ENC)

• Woochong Chon (KHNP)

• Daehun Lim (KEPCO-ENC)

• Kae Yeol Lew (KHNP)

• Seokhwan Hur (KEPCO-ENC)

• Seoung Eun Chun (KHNP)

• Taehan Kim (KEPCO-ENC)

• Jill Monahan (WEC)

• Ray Dremel (ENERCON)

• Naugab Lee (WEC)

• Jeff Leary (ENERCON)

• Tae Han Kim (KHNP)

• Daegeun(Tony) Ahn (KHNP)

• Jong Seob Park (KHNP)

• Dongwon Lee (KEPCO-ENC)

• Sung Ju Cho (KHNP)

• Dongwook Kim (KEPCO-ENC)

• Man Seok Do (KHNP)

I. AUDIT ACTIVITIES AND RESULTS In the afternoon of April 15, 2015, an entrance meeting was held with the applicant at the NRC Headquarters to introduce the regulatory audit background, scope, objective, and agenda. The scope included the Level 1 and Level 2 PRA for internal events, internal flooding, internal fire, and low power and shutdown, PRA-based SMA, external events evaluation, PRA maintenance, risk insights, severe accident evaluation, and RAP list and process. Following these remarks, the applicant presented an overview of the APR1400 ERR and available documentation, the development of the APR1400 PRA, and the software, named SAREX and TREX, used to model and quantify the PRA. In addition, the applicant demonstrated the capabilities of SAREX and TREX and the cutsets generated by the PRA model. During the course of the audit, the applicant added over 320 documents on PRA, PRA-based SMA, external events risk evaluation, key sources of uncertainty/assumptions, uncertainty and sensitivity analyses, importance rankings, PRA maintenance and upgrade, SAE, and RAP to the ERR. The staff sampled a portion of the available documents to confirm the validity of the docketed material on which the

W. Ward 3 staff based its safety determinations. The staff asked 228 questions on PRA, 15 questions on SAE, and 4 questions on RAP. In a number of instances, the applicant committed to consider staff comments/findings and to revise the DCD and/or supporting documents accordingly. The staffs audit questions and the applicants responses and commitments are documented in APR1400 PRA-SAE-RAP Audit Tracking List, dated Oct 5, 2018. Because this document contains proprietary information, it is not publically available.

On July 9, 2018, an exit meeting was held with the applicant where staff conveyed to KHNP that all items documented in the tracking list were resolved. In summary, the staff gained an understanding of the approaches and processes applied by KHNP to develop the PRA, SAE, and RAP. This understanding provided significant insights to the staff that were used to support its safety evaluation. The audit provided staff with an understanding of the technical basis, assumptions, and methods used by the applicant in the APR1400 DCD Chapters 17 and 19.

II. RAIs Discussed During the Audit The following RAIs were discussed during the audit.

• 8305

• 8343

• 8377

• 7842

• 8325

• 8492

• 7945

• 8348

• 8535

• 7864

• 8352

• 8537

• 7894

• 8357

• 8551

• 8290

• 8358

• 8394

• 8308

• 8359

• 8962

• 8366

• 8363

• 8064 III. DOCUMENTS PROVIDED FOR THE AUDIT The documents made available to the NRC staff for this audit included the following:

W. Ward 4 m# File Name Description 1 APR1400-E-P-NR-14001-P PRA Summary Report, Rev. 0 2 APR1400-K-P-NR-013101-P Full Power Level 1 PRA - Initiating Event Analysis, Rev. 0 Full Power Level 1 PRA - Accident Sequence Analysis, Rev.

3 APR1400-K-P-NR-013102-P 0

4 APR1400-K-P-NR-013103-P Full Power Level 1 PRA - Success Criteria Analysis, Rev. 0 5 APR1400-K-P-NR-013104-P Full Power Level 1 PRA - Data Analysis, Rev. 0 6 APR1400-K-P-NR-013105-P Full Power Level 1 PRA - Human Reliability Analysis, Rev. 0 7 APR1400-K-P-NR-013106-P Full Power Level 1 PRA - System Analysis Guideline, Rev. 0 8 APR1400-K-P-NR-013107-P Full Power Level 1 PRA - Quantification Notebook, Rev. 0 Full Power Level 1 PRA - Sensitivity and Uncertainty 9 APR1400-K-P-NR-013108-P Analysis, Rev. 0 Full Power Level 1 PRA - Safety Injection System Notebook, 10 APR1400-K-P-NR-013201-P Rev. 0 Full Power Level 1 PRA - Shutdown Cooling System 11 APR1400-K-P-NR-013202-P Notebook, Rev. 0 Full Power Level 1 PRA - Containment Spray System 12 APR1400-K-P-NR-013203-P Notebook, Rev. 0 Full Power Level 1 PRA - Reactor Coolant System Notebook, 13 APR1400-K-P-NR-013204-P Rev. 0 Full Power Level 1 PRA - Chemical Volume Control System 14 APR1400-K-P-NR-013205-P Notebook, Rev. 0 Full Power Level 1 PRA - Reactor Coolant Gas Vent System 15 APR1400-K-P-NR-013206-P Notebook, Rev. 0 Full Power Level 1 PRA - Auxiliary Feedwater System 16 APR1400-K-P-NR-013207-P Notebook, Rev. 0 Full Power Level 1 PRA - Feedwater System Notebook, Rev.

17 APR1400-K-P-NR-013208-P 0

Full Power Level 1 PRA - Main Steam System Notebook, 18 APR1400-K-P-NR-013209-P Rev. 0 Full Power Level 1 PRA - Auxiliary Power System Notebook, 19 APR1400-K-P-NR-013211-P Rev. 0

W. Ward 5 Full Power Level 1 PRA - Component Cooling Water System 20 APR1400-K-P-NR-013212-P Notebook, Rev. 0 Full Power Level 1 PRA - Essential Service Water System 21 APR1400-K-P-NR-013213-P Notebook, Rev. 0 Full Power Level 1 PRA - Essential Chilled Water System 22 APR1400-K-P-NR-013214-P Notebook, Rev. 0 23 APR1400-K-P-NR-013215-P Full Power Level 1 PRA - HVAC System Notebook, Rev. 0 Full Power Level 1 PRA - Instrument Air System Notebook, 24 APR1400-K-P-NR-013216-P Rev. 0 Full Power Level 1 PRA - Engineered Safety Feature 25 APR1400-K-P-NR-013217-P Actuation System Notebook, Rev. 0 Full Power Level 1 PRA - Reactor Protection System 26 APR1400-K-P-NR-013218-P Notebook, Rev. 0 Full Power Level 1 PRA - Cavity Flooding System Notebook, 27 APR1400-K-P-NR-013221-P Rev. 0 Full Power Level 1 PRA - Containment Isolation System 28 APR1400-K-P-NR-013222-P Notebook, Rev. 0 Full Power Level 1 PRA - Hydrogen Control System 29 APR1400-K-P-NR-013223-P Notebook, Rev. 0 Seismic Margin Analysis - Seismic Equipment List 30 APR1400-K-P-NR-013301-P Development, Rev. 0 Seismic Margin Analysis - Seismic Accident Sequence and 31 APR1400-K-P-NR-013302-P Model Development, Rev. 0 32 APR1400-K-P-NR-013303-P Seismic Margin Analysis - Quantification Notebook, Rev. 0 33 APR1400-K-P-NR-013403-P Internal Fire PRA - Volume III, Rev. 0 34 APR1400-K-P-NR-013501-P Internal Flooding PRA - Flood Area Definition, Rev. 0 Internal Flooding PRA - Accident Sequence Analysis 35 APR1400-K-P-NR-013502-P Notebook, Rev. 0 Internal Flooding PRA - Initiating Event Frequency 36 APR1400-K-P-NR-013503-P Development Notebook, Rev. 0 Internal Flooding PRA - Human Reliability Analysis Notebook, 37 APR1400-K-P-NR-013504-P Rev. 0

W. Ward 6 38 APR1400-K-P-NR-013601-P Full Power Level 2 PRA - PDS Analysis, Rev. 0 Full Power Level 2 PRA - Source Term Category Analysis 39 APR1400-K-P-NR-013603-P Notebook, Rev. 0 40 APR1400-K-P-NR-013604-P Full Power Level 2 PRA - Quantification Notebook, Rev. 0 Low Power and Shutdown PRA - Plant Operating States 41 APR1400-K-P-NR-013700-P Development Notebook, Rev. 0 Low Power and Shutdown PRA - Initiating Event Analysis 42 APR1400-K-P-NR-013701-P Notebook, Rev. 0 Low Power and Shutdown PRA - Accident Sequences 43 APR1400-K-P-NR-013702-P Analysis Notebook, Rev. 0 Low Power and Shutdown PRA - Success Criteria Notebook, 44 APR1400-K-P-NR-013703-P Rev. 0 Low Power and Shutdown PRA - Data Analysis Notebook, 45 APR1400-K-P-NR-013704-P Rev. 0 Low Power and Shutdown PRA - Human Reliability Analysis 46 APR1400-K-P-NR-013705-P Notebook, Rev. 0 Low Power and Shutdown PRA - System Analysis Notebook, 47 APR1400-K-P-NR-013706-P Rev. 0 Low Power and Shutdown PRA - Quantification Notebook, 48 APR1400-K-P-NR-013707-P Rev. 1 LPSD Fire PRA Notebook, Task 1, Plant Boundary Definition 49 APR1400-K-P-NR-013741-P and Partitioning, Rev. 0 LPSD Fire PRA Notebook, Task 2, Component Selection, 50 APR1400-K-P-NR-013742-P Rev. 0 LPSD Fire PRA Notebook, Task 3 and 9, Cable Selection and 51 APR1400-K-P-NR-013743-P Circuit Analysis, Rev. 0 LPSD Fire PRA Notebook, Task 4, Qualitative Screening, 52 APR1400-K-P-NR-013744-P Rev. 0 LPSD Fire PRA Notebook, Task 5, Fire Induced Risk Model, 53 APR1400-K-P-NR-013745-P Rev. 0 LPSD Fire PRA Notebook, Task 6, Fire Ignition Frequencies, 54 APR1400-K-P-NR-013746-P Rev. 0

W. Ward 7 LPSD Fire PRA Notebook, Task 7, Quantitative Screening, 55 APR1400-K-P-NR-013747-P Rev. 0 LPSD Fire PRA Notebook, Task 11, Detailed Fire Modeling 56 APR1400-K-P-NR-013750-P for F000-TB, Rev. 0 LPSD Fire PRA Notebook, Task 11, Detailed Fire Modeling 57 APR1400-K-P-NR-013751-P for F157-AMCR, Rev. 0 LPSD Fire PRA Notebook, Task 11, Fire Scenario Selection, 58 APR1400-K-P-NR-013752-P Rev. 0 LPSD Fire PRA Notebook, Task 11, Multi-Compartment 59 APR1400-K-P-NR-013754-P Analysis, Rev. 0 LPSD Fire PRA Notebook, Task 12, Post-Fire Human 60 APR1400-K-P-NR-013755-P Reliability Analysis, Rev. 0 LPSD Fire PRA Notebook, Task 14, Fire Risk Quantification, 61 APR1400-K-P-NR-013756-P Rev. 0 LPSD Fire PRA Notebook, Task 15, Uncertainty and 62 APR1400-K-P-NR-013757-P Sensitivity Analyses, Rev. 0 LPSD Fire PRA Notebook, Task 16, Fire PRA 63 APR1400-K-P-NR-013758-P Documentation, Rev. 0 Internal Flooding Analysis Notebook For Low Power and 64 APR1400-K-P-NR-013759-P Shutdown, Rev. 0 65 APR1400-K-P-NR-013761-P LPSD Level 2 MAAP Analyses Notebook, Rev. 0 66 APR1400-K-P-NR-013762-P LPSD Level 2 Modeling Notebook, Rev. 0 LPSD Level 2 Internal Events Quantification Notebook, Rev.

67 APR1400-K-P-NR-013763-P 0

Low Power and Shutdown Level 2 Fire Quantification 68 APR1400-K-P-NR-013764-P Notebook, Rev. 0 69 APR1400-K-P-NR-013801-P Other External Events Notebook, Rev. 0 70 APR1400-K-P-NR-013901-P SAMDA Analysis, Rev. 1 71 APR1400-K-P-NR-013902-P Level 3 Notebook, Rev. 1 72 APR1400-K-P-NR-013605-P Level 2 UPC Analysis, Rev. 0 Document Summary Revised PRA Notebooks Initiating Event 73 Document Summary Analysis

W. Ward 8 Full Power Level 1 PRA - Initiating Event Analysis, Rev. 0A ,

74 APR1400-K-P-NR-013101-P Markup copy Full Power Level 1 PRA - Initiating Event Analysis, Rev. 0A ,

75 APR1400-K-P-NR-013101-P Clean copy Document Summary Revised PRA Notebooks Accident 76 Document Summary Sequence Analysis Full Power Level 1 PRA - Accident Sequence Analysis, Rev.

77 APR1400-K-P-NR-013102-P 0A , Markup copy Full Power Level 1 PRA - Accident Sequence Analysis, Rev.

78 APR1400-K-P-NR-013102-P 0A, Clean copy 79 Document Summary Revised PRA Notebooks Fire Volume I Document Summary 80 APR1400-K-P-NR-013401-P R0A_Markup(1) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 81 APR1400-K-P-NR-013401-P R0A_Markup(2) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 82 APR1400-K-P-NR-013401-P Fire R0A_Markup(3) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 83 APR1400-K-P-NR-013401-P Fire R0A_Markup(4) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 84 APR1400-K-P-NR-013401-P R0A_Markup(5) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 85 APR1400-K-P-NR-013401-P Fire R0A_Markup(6) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 86 APR1400-K-P-NR-013401-P Fire R0A_Markup(7) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 87 APR1400-K-P-NR-013401-P R0A_Markup(8) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 88 APR1400-K-P-NR-013401-P R0A_Clean Internal Fire PRA -Volume I, Rev. 0A, Clean copy 89 Document Summary Revised PRA Notebook Fire Volume II Document Summary 90 APR1400-K-P-NR-013402-P R0A_Markup(1) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 91 APR1400-K-P-NR-013402-P R0A_Markup(2) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 92 APR1400-K-P-NR-013402-P R0A_Markup(3) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 93 APR1400-K-P-NR-013402-P R0A_Markup(4) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 94 APR1400-K-P-NR-013402-P R0A_Markup(5) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 95 APR1400-K-P-NR-013402-P R0A_Markup(6) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 96 APR1400-K-P-NR-013402-P R0A_Markup(7) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 97 APR1400-K-P-NR-013402-P R0A_Markup(8) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 98 APR1400-K-P-NR-013402-P R0A_Markup(9) Internal Fire PRA -Volume II, Rev. 0A, Markup copy 99 APR1400-K-P-NR-013402-P Internal Fire PRA -Volume II, Rev. 0A, Markup copy

W. Ward 9 100 APR1400-K-P-NR-013402-P R0A_Clean Internal Fire PRA -Volume II, Rev. 0A, Clean copy 101 Document Summary Revised PRA Notebook Fire Volume IV Document Summary 102 APR1400-K-P-NR-013404-P R0A_Markup Internal Fire PRA -Volume IV, Rev. 0A, Markup copy 103 APR1400-K-P-NR-013404-P R0A_Clean Internal Fire PRA -Volume IV, Rev. 0A, Clean copy 104 Markup_APR1400-K-P-NR-013602-P CET Notebook_0A(1) Full Power Level 2 CET DET Analysis 105 Document Summary PRA Report Document Summary Full Power Fire PRA, Task 13, Seismic-Fire Interaction 106 APR1400-K-P-NR-013455-P R0 FP Fire Task 13_R0 Assessment 107 Document Summary PRA Notebook Document Summary Full Power Level 1 PRA -Human Reliability Analysis, Rev. 0A, 108 APR1400-K-P-NR-013105-P_R0A_Markup Markup copy Full Power Level 1 PRA - Human Reliability Analysis, Rev.

109 APR1400-K-P-NR-013105-P_R0A_Clean 0A, Clean copy Document Summary PRA Notebook Success Criteria Analysis 110 Document Summary 160318 Full Power Level 1 PRA -Human Reliability Analysis, Rev. 0A, 111 APR1400-K-P-NR-013103-P_R0A_Markup Markup copy Full Power Level 1 PRA -Human Reliability Analysis, Rev. 0A, 112 APR1400-K-P-NR-013103-P_R0A_Clean Clean copy Document Summary Success Criteria Analysis Notebook R0B 113 Document Summary 160629 114 APR1400-K-P-NR-013103-P SC Markup R0B Full Power Level 1 PRA Success Criteria Probabilistic Risk Assessment and Severe Accident 115 Markup APR1400 DCD Tier 2 Chapter 19.1 Rev 0A Evaluation Probabilistic Risk Assessment and Severe Accident 116 Markup APR1400 DCD Tier 2 Chapter 19.1 Rev 0A 160718 Evaluation 117 APR1400-K-P-NR-013602-P CET Notebook R2 Full Power Level 2 PRA CET DET Analysis 118 APR1400-K-P-NR-013603-P STC Notebook R1 Level 2 STC Analysis 119 APR1400-K-P-NR-013761-P LPSD L2 MAAP Analysis LPSD Level 2 MAAP Analysis 120 APR1400-K-P-NR-013762-P LPSD L2 Modeling Notebook LPSD Level 2 Modeling Notebook 121 APR1400-K-P-NR-013903-P RAP Rev. 3 Reliability Assurance Program

W. Ward 10 Full Power Internal Events and Internal Flooding Level 1 PRA APR1400 NRC DC PRA Peer Review with Resolutions (Rev.

122 - Resolution Evaluations of the Facts and Observations from 0)

Peer Review 123 APR1400-K-P-NR-013101-P IE Rev. 3(1) At Power Level 1 PRA - Initiating Event Analysis 124 APR1400-K-P-NR-013102-P AS Rev. 3(1) At Power Level 1 PRA - Accident Sequence Analysis 125 APR1400-K-P-NR-013104-P DA Rev. 3(1) At Power Level 1 PRA - Data Analysis 126 APR1400-K-P-NR-013107-P QU Rev. 3(1) At Power Level 1 PRA - Quantification Notebook 127 APR1400-K-P-NR-013761-P Rev.1 LPSD L2 MAAP Analyses LPSD Level 2 MAAP Analyses Seismic Margin Analysis - Seismic Equipment List 128 APR1400-K-P-NR-013301-P SEL Revision 2 Development Seismic Margin Analysis - Seismic Accident Sequence and 129 APR1400-K-P-NR-013302-P SMA Model Revision 2 Model Development 130 APR1400-K-P-NR-013303-P SMA Quantification Revision 2 Seismic Margin Analysis - Quantification Notebook 131 APR1400-K-P-NR-017771-P LPSD SMA Revision 1 LPSD Seismic Margin Analysis 132 APR1400-K-P-NR-013108-P Rev. 2 Sensitivity & Uncertainty At Power Level 1 PRA - Sensitivity and Uncertainty Analysis LPSD Fire PRA Notebook, Task 12, Post-Fire Human 133 APR1400-K-P-NR-013755-P R1 LPSD Fire Draft Rev. 1 Reliability Analysis 134 Appendix A HRA Calculator LPSD Fire HFE Output LPSD Fire HRA Calculator 135 Appendix B LPSD Fire Dependency Report LPSD Fire Dependency Report 136 APR1400-K-P-NR-013705-P LPSD HRA Draft Rev. 1 Low Power and Shutdown PRA - Human Reliability Analysis 137 Appendix A LPSD IE&FL HRA Report LPSD IE&FL HRA Report 138 Appendix B LPSD IE&FL Dependency Report LPSD IE&FL Dependency Report 139 APR1400-K-P-NR-013760-P LPSD Flooding HRA Draft Rev. 1 LPSD Internal Flooding PRA Human Reliability Analysis 140 APR1400 DC Environmental Report Rev. 1 Environmental Report Rev. 1 141 11E47-1-037-N417-001-01, Rev. 03 (RAP)-1 Reliability Assurance Program Seismic Margin Analysis - Seismic Equipment List 142 APR1400-K-P-NR-013301-P SEL Revision 2-20180413 Development APR1400-K-P-NR-013302-P SMA Model Revision 2- Seismic Margin Analysis - Seismic Accident Sequence and 143 20180416 Model Development APR1400-K-P-NR-013303-P SMA Quantification Revision 2, 144 Seismic Margin Analysis - Quantification Notebook 20180416 145 APR1400-K-P-NR-017304-P SFA Revision 1, 20180416 Seismic Fragility Analysis Notebook

W. Ward 11 146 APR1400-K-P-NR-017771-P LPSD SMA Revision 1, 20180416 LPSD Seismic Margin Analysis APR1400-K-P-NR-017202-P Self Assessment for PRA-based 147 Self-Assessment for PRA-Based SMA SMA Revision 0, 20180416 148 APR1400-K-P-NR-013101-P IE R3 Total At Power Level 1 PRA - Initiating Event Analysis 149 APR1400-K-P-NR-013102-P AS R3 Total At Power Level 1 PRA - Accident Sequence Analysis 150 APR1400-K-P-NR-013103-P SC R3 Total At Power Level 1 PRA - Success Criteria Analysis 151 APR1400-K-P-NR-013104-P DA R3 Total At Power Level 1 PRA - Data Analysis 152 APR1400-K-P-NR-013105-P R3 HRA At Power Level 1 PRA - Human Reliability Analysis 153 APR1400-K-P-NR-013106-P SA R2 Total At Power Level 1 PRA - System Analysis Guideline 154 APR1400-K-P-NR-013107-P QU R3 Total At Power Level 1 PRA - Quantification Notebook 155 APR1400-K-P-NR-013108-P UN R2 Total At Power Level 1 PRA - Sensitivity and Uncertainty Analysis 156 APR1400-K-P-NR-013201-P SI SNB R2-Total At Power Level 1 PRA - Safety Injection System Notebook 157 APR1400-K-P-NR-013202-P SC SNB R2-Total At Power Level 1 PRA - Shutdown Cooling System Notebook At Power Level 1 PRA - Containment Spray System 158 APR1400-K-P-NR-013203-P CS SNB R2 Total Notebook 159 APR1400-K-P-NR-013204-P RC SNB R2 Total At Power Level 1 PRA - Reactor Coolant System Notebook At Power Level 1 PRA - Chemical Volume Control System 160 APR1400-K-P-NR-013205-P CV-SNB R2 Total Notebook 161 APR1400-K-P-NR-013221-P R2 CFS At Power Level 1 PRA - Cavity Flooding System Notebook At Power Level 1 PRA - Containment Isolation System 162 APR1400-K-P-NR-013222-P R2 CIS Notebook 163 APR1400-K-P-NR-013223-P R2 HGR At Power Level 1 PRA - Hydrogen Control System Notebook At Power Level 1 PRA - Reactor Coolant Gas Vent System 164 APR1400-K-P-NR-013206-P RG SNB R2 Total Notebook At Power Level 1 PRA - Auxiliary Feedwater System 165 APR1400-K-P-NR-013207-P AF-SNB R2 Total Notebook 166 APR1400-K-P-NR-013208-P FW-SNB_R2-Total At Power Level 1 PRA - Feedwater System Notebook 167 APR1400-K-P-NR-013209-P MS-SNB_R2-Total At Power Level 1 PRA - Main Steam System Notebook 168 APR1400-K-P-NR-013216-P IA-SNB_R2-Total At Power Level 1 PRA - Instrument Air System Notebook At Power Level 1 PRA - Engineered Safety Features 169 APR1400-K-P-NR-013217-P EF-SNB_R2-Total Actuation System Notebook 170 APR1400-K-P-NR-013218-P RP-SNB_R2-Total At Power Level 1 PRA - Reactor Protection System Notebook

W. Ward 12 171 APR1400-K-P-NR-013211-P AP-SNB_R2-Total At Power Level 1 PRA - Auxiliary Power System Notebook At Power Level 1 PRA - Component Cooling Water System 172 APR1400-K-P-NR-013212-P CC-SNB_R2-Total Notebook At Power Level 1 PRA - Essential Service Water System 173 APR1400-K-P-NR-013213-P SX-SNB_R2-Total Notebook At Power Level 1 PRA - Essential Chilled Water System 174 APR1400-K-P-NR-013214-P WO-SNB_R2-Total Notebook 175 APR1400-K-P-NR-013215-P HV-SNB_R2-Total At Power Level 1 PRA - HVAC System Notebook 176 APR1400-K-P-NR-013401-P Fire PRA Volume I-Final-Total Internal Fire PRA - Volume I 177 APR1400-K-P-NR-013402-P Fire PRA Volume II_Final-Total Internal Fire PRA - Volume II APR1400-K-P-NR-013404-P Fire PRA Volume IV-2_Final-178 Internal Fire PRA - Volume IV Total 179 APR1400-K-P-NR-013764-P LPSD L2 Fire Quantification_R2 LPSD Level 2 Fire Quantification 180 APR1400-K-P-NR-013756-P LPSD Fire Task 14_R2 LPSD Fire PRA Notebook, Task 14, Fire Risk Quantification LPSD Fire PRA Notebook, Task 15, Uncertainty and 181 APR1400-K-P-NR-013757-P LPSD Fire Task 15_R2 Sensitivity Analyses 182 APR1400-K-P-NR-013758-P LPSD Fire Task 16_R2 LPSD Fire PRA Notebook, Task 16, Fire PRA Documentation 183 APR1400-K-P-NR-013764-P LPSD L2 Fire Quantification_R2 LPSD Level 2 Fire Quantification LPSD Fire PRA Notebook, Task 1, Plant Boundary Definition 184 APR1400-K-P-NR-013741-P LPSD Fire Task 1_R2 and Partitioning 185 APR1400-K-P-NR-013742-P LPSD Fire Task 2 _R2 LPSD Fire PRA Notebook, Task 2, Component Selection LPSD Fire PRA Notebook, Tasks 3 and 9, Cable Selection 186 APR1400-K-P-NR-013743-P LPSD Fire Task 3 & 9_R2 and Circuit Analysis 187 APR1400-K-P-NR-013744-P LPSD Fire Task 4 _ R2 LPSD Fire PRA Notebook, Task 4, Qualitative Screening 188 APR1400-K-P-NR-013745-P LPSD Fire Task 5 _ R2 LPSD Fire PRA Notebook, Task 5, Fire Induced Risk Model 189 APR1400-K-P-NR-013746-P LPSD Fire Task 6 _ R2 LPSD Fire PRA Notebook, Task 6, Fire Ignition Frequencies 190 APR1400-K-P-NR-013747-P LPSD Fire Task 7 _ R2 LPSD Fire PRA Notebook, Task 7, Quantitative Screening LPSD Fire PRA Notebook, Task 11, Detailed Fire Modeling 191 APR1400-K-P-NR-013750-P LPSD Fire Task 11 - F000-TB_R2 for F000-TB APR1400-K-P-NR-013751-P LPSD Fire Task 11-F157- LPSD Fire PRA Notebook, Task 11, Detailed Fire Modeling 192 AMCR_R2 for F157-AMCR 193 APR1400-K-P-NR-013752-P LPSD Fire Task 11 - FSS _ R2 LPSD Fire PRA Notebook, Task 11, Fire Scenario Selection

W. Ward 13 LPSD Fire PRA Notebook, Task 11, Multi-Compartment 194 APR1400-K-P-NR-013754-P LPSD Fire Task 11 - MCA _ R2 Analysis LPSD Fire PRA Notebook, Task 12, Post-Fire Human 195 APR1400-K-P-NR-013755-P LPSD Fire Task 12_R2 Reliability Analysis APR1400-K-P-NR-013501-P AP Internal Flooding Area 196 Internal Flooding PRA - Flood Area Definition Descriptions_R2 APR1400-K-P-NR-013503-P AP Internal Flooding Initiating Internal Flooding PRA - Initiating Event Frequency 197 Events_R2 Development 198 APR1400-K-P-NR-013504-P AP Internal Flooding HRA_R2 Internal Flooding PRA - Human Reliability Analysis 199 APR1400-K-P-NR-013505-P AP Internal Flooding QU_R0 Internal Flooding PRA - Quantification Notebook 200 APR1400-K-P-NR-013801-P Other External Events_R2 Other External Events 201 APR1400-K-P-NR-017771-P LPSD SMA Revision 1 LPSD Seismic Margin Analysis APR1400-K-P-NR-017202-P Self Assessment for PRA-based 202 Self-Assessment for PRA-Based SMA SMA Revision 0 Seismic Margin Analysis - Seismic Equipment List 203 APR1400-K-P-NR-013301-P SEL Revision 2 Development Seismic Margin Analysis - Seismic Accident Sequence and 204 APR1400-K-P-NR-013302-P SMA Model Revision 2 Model Development 205 APR1400-K-P-NR-013303-P SMA Quantification Revision 2 Seismic Margin Analysis - Quantification Notebook 206 APR1400-K-P-NR-017304-P SFA Revision 1 Seismic Fragility Analysis Notebook 207 APR1400-K-P-NR-013601-P R3 PDS At Power Level 2 PRA - PDS Analysis 208 APR1400-K-P-NR-013602-P R3 CET At Power Level 2 PRA - CET/DET Analysis 209 APR1400-K-P-NR-013603-P R2_STC At Power Level 2 PRA - Source Term Category Analysis 210 APR1400-K-P-NR-013604-P R2_Level 2 QU At Power Level 2 PRA - Quantification Notebook 211 APR1400-K-P-NR-013761-P R1 LPSD L2 TH LPSD Level 2 MAAP Analyses 212 APR1400-K-P-NR-013762-P R1 LPSD L2 Modeling LPSD Level 2 Modeling Notebook 213 APR1400-K-P-NR-013763-P R2 LPSD L2 Internal QU LPSD Level 2 Internal Events Quantification Low Power and Shutdown PRA - Plant Operating States 214 APR1400-K-P-NR-013700-P R2_LPSD POS Development 215 APR1400-K-P-NR-013701-P R2_LPSD IE Analysis.pdf Low Power and Shutdown PRA - Initiating Event Analysis Low Power and Shutdown PRA - Accident Sequences 216 APR1400-K-P-NR-013702-P R2_LPSD AS Analysis

W. Ward 14 217 APR1400-K-P-NR-013704-P R2_LPSD Data Analysis Low Power and Shutdown PRA - Data Analysis 218 APR1400-K-P-NR-013705-P R2_LPSD HRA Low Power and Shutdown PRA - Human Reliability Analysis Low Power and Shutdown PRA - Human Reliability Analysis 219 APR1400-K-P-NR-013705-P R2_Appendix A

- Appendix A Low Power and Shutdown PRA - Human Reliability Analysis 220 APR1400-K-P-NR-013705-P R2_Appendix B

- Appendix B 221 APR1400-K-P-NR-013706-P R2_LPSD System Low Power and Shutdown PRA - System Analysis 222 APR1400-K-P-NR-013707-P R2_LPSD QU Low Power and Shutdown PRA - Quantification Notebook 223 APR1400-K-P-NR-013759-P R2_LPSD Flooding LPSD Internal Flooding Analysis 224 APR1400-K-P-NR-013760-P R0_LPSD Flooding HRA LPSD Internal Flooding PRA Human Reliability Analysis 225 APR1400-K-P-NR-013711-P, Rev 0 - Fire PRA Gap Analysis At-Power and LPSD Fire PRA Gap Analysis APR1400-K-P-NR-013712-P, Rev 0 - Level 2 PRA Gap 226 LPSD Internal Events PRA Gap Analysis Analysis APR1400-K-P-NR-013713-P, Rev 0 - LPSD IE PRA Gap 227 LPSD Internal Flooding PRA Gap Analysis Analysis APR1400-K-P-NR-013714-P, Rev 0 - LPSD Internal Flooding 228 Level 2 PRA Gap Analysis PRA Gap Analysis At-Power Internal Events and Internal Flooding Peer Review 229 APR1400-K-P-NR-013710-P Peer Review with Resolutions_R0 Resolution 230 APR1400-E-P-NR-14006-P_R2_SAMDA SAMDA Analysis 231 APR1400-K-P-NR-013902-P R2_Level 3 Level 3 Analysis 232 APR1400-K-P-NR-013903-P R4_RAP-1 Reliability Assurance Program The List of RELAP and MAAP Results (APR1400-K-P-NR-233 The List of RELAP and MAAP Results 013103-P) 234 0.0 Title_APR1400 DC_Rev1.0 Title 235 0.1 Foreword_APR1400 DC_Rev1.0 Foreword 236 1.0 SPTA_APR1400 DC_Rev1.0 Standard Post Trip Actions 237 1.0 SPTA_Bases_APR1400 DC_Rev1.0 Base of Standard Post Trip Actions 238 2.0 DA_APR1400 DC_Rev1.0 Diagnostic Actions 239 2.0 DA_Bases_APR1400 DC_Rev1.0 Base of Diagnostic Actions 240 3.0 RT_APR1400 DC_Rev1.0 Reactor Trip Recovery Guideline

W. Ward 15 241 3.0 RT_Bases_APR1400 DC_Rev1.0 Base of Reactor Trip Recovery Guideline 242 4.0 LOCA_APR1400 DC_Rev1.0 Loss of Coolant Accident Recovery Guideline 243 4.0 LOCA_Bases_APR1400 DC_Rev1.0 Base of Loss of Coolant Accident Recovery Guideline 244 5.0 SGTR_APR1400 DC_Rev1.0 Steam Generator Tube Rupture Recovery Guideline 245 5.0 SGTR_Bases_APR1400 DC_Rev1.0 Base of Steam Generator Tube Rupture Recovery Guideline 246 6.0 ESDE_APR1400 DC_Rev1.0 Excess Steam Demand Event Recovery Guideline 247 6.0 ESDE_Bases_APR1400 DC_Rev1.0 Base of Excess Steam Demand Event Recovery Guideline 248 7.0 LOAF_APR1400 DC_Rev1.0 Loss of All Feedwater Recovery Guideline 249 7.0 LOAF_Bases_APR1400 DC_Rev1.0 Base of Loss of All Feedwater Recovery Guideline Loss of offsite Power / Loss of Forced Circulation Recovery 250 8.0 LOOP_APR1400 DC_Rev1.0 Guideline Base of Loss of offsite Power / Loss of Forced Circulation 251 8.0 LOOP_Bases_APR1400 DC_Rev1.0 Recovery Guideline 252 9.0 SBO_APR1400 DC_Rev1.0 Station Blackout Recovery Guideline 253 9.0 SBO_Bases_APR1400 DC_Rev1.0 Base of Station Blackout Recovery Guideline 254 10.1 FRG ENTRY_APR1400 DC_Rev1.0 Functional Recovery Guideline 255 10.1 FRG ENTRY_Bases_APR1400 DC_Rev1.0 Base of Functional Recovery Guideline 256 10.2 RAT_APR1400 Fig 10-7_10-14_Rev1.0 Figure 10-7 to Figure 10-14 257 10.3 FRG SFSC_APR1400 DC_Rev1.0 FRG Safety Functions Status Checks 258 10.4 FRG RC_APR1400 DC_Rev1.0 FRG Reactivity Control 259 10.4 FRG RC_Bases_APR1400 DC_Rev1.0 Base of FRG Reactivity Control 260 10.5 FRG MOVA_APR1400 DC_Rev1.0 FRG Maintenance of Vital Auxiliaries 261 10.5 FRG MOVA_Bases_APR1400 DC_Rev1.0 Base of FRG Maintenance of Vital Auxiliaries 262 10.6 FRG IC_APR1400 DC_Rev1.0 FRG RCS Inventory Control 263 10.6 FRG IC_Bases_APR1400 DC_Rev1.0 Base of FRG RCS Inventory Control 264 10.7 FRG PC_APR1400 DC_Rev1.0 FRG RCS Pressure Control 265 10.7 FRG PC_Bases_APR1400 DC_Rev1.0 Base of FRG RCS Pressure Control 266 10.8 FRG HR_APR1400 DC_Rev1.0 FRG Core and RCS Heat Removal 267 10.8 FRG HR_Bases_APR1400 DC_Rev1.0 Base of FRG Core and RCS Heat Removal 268 10.9 FRG CI_APR1400 DC_Rev1.0 FRG Containment Isolation

W. Ward 16 269 10.9 FRG CI_Bases_APR1400 DC_Rev1.0 Base of FRG Containment Isolation FRG Containment Isolation Temperature and Pressure 270 10.10 FRG CTPC_APR1400 DC_Rev1.0 Control Base of FRG Containment Isolation Temperature and 271 10.10 FRG CTPC_Bases_APR1400 DC_Rev1.0 Pressure Control 272 10.11 FRG CCGC_APR1400 DC_Rev1.0 Containment Combustible Gas Control 273 10.11 FRG CCGC_Bases_APR1400 DC_Rev1.0 Base of Containment Combustible Gas Control 274 10.12 FRG LTA_APR1400 DC_Rev1.0 Long Term Actions 275 10.12 FRG LTA_Bases_APR1400 DC_Rev1.0 Base of Long Term Actions 276 11.0 EOG SYSTEM_APR1400 DC_Rev1.0 APR1400 EOG System 277 12.0 WRITER_S GUIDE_APR1400 DC_Rev1.0 EOG Writers Guide 278 12.1 APPENDIX A_APR1400 DC_Rev1.0 Appendix A: Sample EOG for Reactor Trip Recovery 279 12.2 APPENDIX B_APR1400 DC_Rev1.0 Appendix B: Preferred Verb List 280 12.3 APPENDIX C_APR1400 DC_Rev1.0 Appendix C: List of Special Meanings 281 12.4 APPENDIX D_APR1400 DC_Rev1.0 Appendix D: Abbreviations & Acronyms List 282 13.0 Reference_APR1400 DC_Rev1.0 Reference 283 Peer Review Report for the APR1400 DC PRA Peer Review Report APR1400 NRC DC PRA Peer Review Resolution Evaluation 284 Peer Review Resolution Evaluation Report Report 285 Document Summary for NRC Review Summary 286 1_1st Expert Panel Results 1st Expert Panel Results 287 2_2nd Expert Panel Results 2nd Expert Panel Results 288 3_3rd Expert Panel Results 3rd Expert Panel Results 289 4_4th Expert Panel Results 4th Expert Panel Results 290 5_5th Expert Panel Results 5th Expert Panel Results 291 6_Final RAP SSC List 6th Expert Panel Results 292 Room Heat up Calculation Summary for NRC Review_PRA Room Heat-up Calculation Summary 293 APR1400-K-P-NR-013101-P (IE Notebook) Full Power Level 1 PRA Initiating Event Analysis 294 DC-DG-03-01_Rev_3 Design Control Procedure (Rev. 3)

Implementation of Severe Accident Mitigation Design 295 DC-DG-03-23_rev.0 Alternatives

W. Ward 17 296 DC-DG-03-24_rev_1(draft) Risk Management Procedure (Rev. 1_draft) 297 DC-DG-03-24-rev2-engkor(watermark) Risk Management Procedure (Rev. 2) 298 EP-6.40 Risk Management Engineering Procedure-Rev2 Risk Management Engineering Procedure, Rev2 EP-6.41 Risk Management Engineering Configuration Control-299 Risk Management Engineering Configuration Control, Rev3 Rev3.

300 EP-6.42 Risk Management Engineering Documentation-Rev1 Risk Management Engineering Documentation, Rev1 EP-6.45 Risk Management Engineering Training and Cert-301 Risk Management Engineering Training, Rev1 Rev1 EP-6.47 Risk Management Engineering Peer Reviews, Risk Management Engineering Peer Reviews, Independent 302 Independent Reviews and Self Assessments-Rev1 Reviews and Self Assessments, Rev1 303 DC-DG-03-09_rev_0 Implementation of the Reliability Assurance Program (Rev. 0) 304 DC-DG-03-10_rev_0 Expert Panel Roles and Responsibilities (Rev. 0) 305 DC-DG-03-11_rev_0 Risk Significance Determination of RAPs SSCs (Rev. 0) 306 APR1400 MELTSPREAD and CORQUENCH Report Calculation of Corium Spreading 307 Severe Accident Analysis Summary for NRC review Severe Accident Analysis Summary 308 The List of STC MAAP Results (APR1400-K-P-NR-013603-P) Release Parameter Data for APR1400 Release Category List of key source of uncertainty and assumption of MAAP Key Source of Uncertainty and Assumption of MAAP 309 calculations and Results Calculations and Results 310 FTREX Testing Report Testing Report for FTREX 311 SAREX V13 SVVR V&V Report for SAREX ver. 1.3 312 01_ Main Body Main Body of Report 313 02_ Appendix 1-4 Appendix 1 to 4 314 03_ Appendix 5-8 Appendix 5 to 8 315 04_ Appendix 9-12 Appendix 9 to 12 316 05_ Appendix 13-16 Appendix 13 to 16

W. Ward 18 317 06_ Appendix 17-19 Appendix 17 to 19 318 07_ Appendix 20-24 Appendix 20 to 24 319 08_ Appendix 25-28 Appendix 25 to 28 320 09_ Appendix 29-30 Appendix 29 and 30 321 Distance from the top of the RHR pipe flow area Distance from the Top of the RHR Pipe Flow Area 322 UCN34 Vortex TP UCN34 Vortex Docket No.52-046

ML18282A78 Pkg. NRO-002 OFFICE PM:NRO/DSRA BC:NRO/DSRA NAME HPhan MHayes DATE 10/09/2018 10/09/2018