ML20036D416

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Part 02 - Final Safety Analysis Report (Rev. 4) - Part 02 - Tier 01 - Certified Design Descriptions and Inspections, Tests, Analyses, and Acceptance Criteria - Chapters 01 - 05
ML20036D416
Person / Time
Site: NuScale
Issue date: 01/16/2020
From: Bergman T
NuScale
To:
Office of Nuclear Reactor Regulation
Cranston G
References
NUSCALESMRDC, NUSCALESMRDC.SUBMISSION.10, NUSCALEPART02.NP, NUSCALEPART02.NP.4
Download: ML20036D416 (141)
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Text

NuScale Standard Plant Design Certification Application Certified Design Descriptions and Inspections, Tests, Analyses, & Acceptance Criteria (ITAAC)

PART 2 - TIER 1 Revision 4 January 2020

©2020, NuScale Power LLC. All Rights Reserved

COPYRIGHT NOTICE This document bears a NuScale Power, LLC, copyright notice. No right to disclose, use, or copy any of the information in this document, other than by the U.S. Nuclear Regulatory Commission (NRC), is authorized without the express, written permission of NuScale Power, LLC.

The NRC is permitted to make the number of copies of the information contained in these reports needed for its internal use in connection with generic and plant-specific reviews and approvals, as well as the issuance, denial, amendment, transfer, renewal, modification, suspension, revocation, or violation of a license, permit, order, or regulation subject to the requirements of 10 CFR 2.390 regarding restrictions on public disclosure to the extent such information has been identified as proprietary by NuScale Power, LLC, copyright protection notwithstanding. Regarding nonproprietary versions of these reports, the NRC is permitted to make the number of additional copies necessary to provide copies for public viewing in appropriate docket files in public document rooms in Washington, DC, and elsewhere as may be required by NRC regulations. Copies made by the NRC must include this copyright notice in all instances and the proprietary notice if the original was identified as proprietary.

NuScale Tier 1 Table of Contents TABLE OF CONTENTS CHAPTER 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.0-1 1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0-1 1.1 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1-1 1.2 General Provisions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2-1 1.2.1 Design Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2-1 1.2.2 Interpretation of System Description Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2-1 1.2.3 Interpretation of System Description Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2-1 1.2.4 Implementation of Inspections, Tests, Analyses, and Acceptance Criteria . . . . . 1.2-2 1.2.5 Acronyms and Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2-3 CHAPTER 2 UNIT SPECIFIC STRUCTURES, SYSTEMS, AND COMPONENTS DESIGN DESCRIPTIONS AND INSPECTIONS, TESTS, ANALYSES, AND ACCEPTANCE CRITERIA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.0-1 2.0 Unit Specific Systems, Structures, and Components Design Descriptions and Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . 2.0-1 2.1 NuScale Power Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1-1 2.1.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1-1 2.1.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 2.1-4 2.2 Chemical and Volume Control System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2-1 2.2.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2-1 2.2.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 2.2-1 2.3 Containment Evacuation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3-1 2.3.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3-1 2.3.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 2.3-1 2.4 Not Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.4-1 2.5 Module Protection System and Safety Display and Indication System . . . . . . . . . . 2.5-1 2.5.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5-1 2.5.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 2.5-5 2.6 Neutron Monitoring System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.6-1 2.6.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.6-1 2.6.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 2.6-1 2.7 Radiation Monitoring Module Specific. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7-1 2.7.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7-1 Tier 1 i Revision 4

NuScale Tier 1 Table of Contents TABLE OF CONTENTS 2.7.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 2.7-1 2.8 Equipment Qualification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8-1 2.8.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8-1 2.8.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 2.8-2 2.9 Fuel Assembly Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.9-1 2.9.1 Fuel Assembly Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.9-1 2.9.2 Inspections, Tests, Analyses and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . 2.9-1 CHAPTER 3 SHARED STRUCTURES, SYSTEMS, AND COMPONENTS AND NON-STRUCTURES, SYSTEMS, AND COMPONENTS DESIGN DESCRIPTIONS AND INSPECTIONS, TESTS, ANALYSES, AND ACCEPTANCE CRITERIA . . . . . . . . . . . . . . .3.0-1 3.0 Shared Structures, Systems, and Components and Non-Structures, Systems, and Components Design Descriptions and Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0-1 3.1 Control Room Habitability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1-1 3.1.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1-1 3.1.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 3.1-1 3.2 Normal Control Room Heating Ventilation and Air Conditioning System . . . . . . . 3.2-1 3.2.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2-1 3.2.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 3.2-1 3.3 Reactor Building Heating Ventilation and Air Conditioning System . . . . . . . . . . . . 3.3-1 3.3.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3-1 3.3.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 3.3-1 3.4 Fuel Handling Equipment System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4-1 3.4.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4-1 3.4.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 3.4-1 3.5 Fuel Storage System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5-1 3.5.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5-1 3.5.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 3.5-1 3.6 Ultimate Heat Sink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.6-1 3.6.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.6-1 3.6.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 3.6-2 3.7 Fire Protection System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.7-1 3.7.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.7-1 Tier 1 ii Revision 4

NuScale Tier 1 Table of Contents TABLE OF CONTENTS 3.7.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 3.7-2 3.8 Plant Lighting System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.8-1 3.8.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.8-1 3.8.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 3.8-1 3.9 Radiation Monitoring - NuScale Power Modules 1 - 12. . . . . . . . . . . . . . . . . . . . . . . . . 3.9-1 3.9.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.9-1 3.9.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . 3.9-1 3.10 Reactor Building Crane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.10-1 3.10.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.10-1 3.10.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . 3.10-1 3.11 Reactor Building. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.11-1 3.11.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.11-1 3.11.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . 3.11-2 3.12 Radioactive Waste Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.12-1 3.12.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.12-1 3.12.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . 3.12-1 3.13 Control Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.13-1 3.13.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.13-1 3.13.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . 3.13-2 3.14 Equipment Qualification - Shared Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.14-1 3.14.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.14-1 3.14.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . 3.14-1 3.15 Human Factors Engineering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.15-1 3.15.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.15-1 3.15.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . 3.15-1 3.16 Physical Security System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.16-1 3.16.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.16-1 3.16.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . 3.16-1 3.17 Radiation Monitoring - NuScale Power Modules 1 - 6 . . . . . . . . . . . . . . . . . . . . . . . . . 3.17-1 3.17.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.17-1 3.17.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . 3.17-1 Tier 1 iii Revision 4

NuScale Tier 1 Table of Contents TABLE OF CONTENTS 3.18 Radiation Monitoring - NuScale Power Modules 7 - 12. . . . . . . . . . . . . . . . . . . . . . . . 3.18-1 3.18.1 Design Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.18-1 3.18.2 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . 3.18-1 CHAPTER 4 INTERFACE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.0-1 4.0 Interface Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0-1 4.1 Site-Specific Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0-1 CHAPTER 5 SITE PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.0-1 5.0 Site Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0-1 Tier 1 iv Revision 4

NuScale Tier 1 List of Tables LIST OF TABLES Table 2.1-1: NuScale Power Module Piping Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1-5 Table 2.1-2: NuScale Power Module Mechanical Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1-7 Table 2.1-3: NuScale Power Module Electrical Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1-9 Table 2.1-4: NuScale Power Module Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1-10 Table 2.2-1: Chemical and Volume Control System Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2-2 Table 2.2-2: Chemical and Volume Control System Mechanical Equipment . . . . . . . . . . . . . . . . . . 2.2-3 Table 2.2-3: Chemical and Volume Control System Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2-4 Table 2.3-1: Containment Evacuation System Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3-2 Table 2.4-1: Not Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.4-2 Table 2.5-1: Module Protection System Automatic Reactor Trip Functions. . . . . . . . . . . . . . . . . . . 2.5-6 Table 2.5-2: Module Protection System Automatic Engineered Safety Feature Functions . . . . 2.5-7 Table 2.5-3: Module Protection System Manual Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5-9 Table 2.5-4: Module Protection System Interlocks/Permissives/Overrides . . . . . . . . . . . . . . . . . . 2.5-10 Table 2.5-5: Safety Display and Indication System Accident Monitoring Variables. . . . . . . . . . . 2.5-11 Table 2.5-6: Important Human Actions Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5-12 Table 2.5-7: Module Protection System and Safety Display and Indication System Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5-13 Table 2.6-1: Neutron Monitoring Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . 2.6-2 Table 2.7-1: Radiation Monitoring - Module-Specific Automatic Actions . . . . . . . . . . . . . . . . . . . . . 2.7-2 Table 2.7-2: Radiation Monitoring - Module-Specific Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7-3 Table 2.8-1: Module Specific Mechanical and Electrical/I&C Equipment . . . . . . . . . . . . . . . . . . . . . 2.8-3 Table 2.8-2: Equipment Qualification Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8-11 Table 3.0-1: Shared Systems Subject to Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0-2 Table 3.1-1: Control Room Habitability System Mechanical Equipment. . . . . . . . . . . . . . . . . . . . . . 3.1-2 Table 3.1-2: Control Room Habitability System Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1-3 Table 3.2-1: Normal Control Room Heating Ventilation and Air Conditioning System Mechanical Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2-2 Tier 1 v Revision 4

NuScale Tier 1 List of Tables LIST OF TABLES Table 3.2-2: Normal Control Room Heating Ventilation and Air Conditioning Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2-3 Table 3.3-1: Reactor Building Heating Ventilation and Air Conditioning System Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3-2 Table 3.4-1: Fuel Handling Equipment System Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4-2 Table 3.5-1: Fuel Storage System Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . 3.5-2 Table 3.6-1: Ultimate Heat Sink Piping System and Mechanical Equipment . . . . . . . . . . . . . . . . . . 3.6-3 Table 3.6-2: Ultimate Heat Sink Piping System Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.6-4 Table 3.7-1: Fire Protection System Inspections, Tests, Analyses, and Acceptance Criteria . . . . 3.7-3 Table 3.8-1: Plant Lighting System Inspections, Tests, Analyses, and Acceptance Criteria. . . . . 3.8-2 Table 3.9-1: Radiation Monitoring - NuScale Power Modules 1-12 Automatic Actions . . . . . . . . 3.9-2 Table 3.9-2: Radiation Monitoring - NuScale Power Modules 1-12 Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.9-4 Table 3.10-1: Reactor Building Crane Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.10-2 Table 3.11-1: Not Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.11-3 Table 3.11-2: Reactor Building Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . 3.11-4 Table 3.12-1: Not Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.12-2 Table 3.12-2: Radioactive Waste Building ITAAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.12-3 Table 3.13-1: Control Building Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . 3.13-3 Table 3.14-1: Mechanical and Electrical/Instrumentation and Controls Shared Equipment . . . 3.14-2 Table 3.14-2: Equipment Qualification - Shared Equipment ITAAC. . . . . . . . . . . . . . . . . . . . . . . . . . . 3.14-4 Table 3.15-1: Human Factors Engineering Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.15-2 Table 3.16-1: Physical Security System Inspections, Tests, Analyses, and Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.16-2 Table 3.17-1: Radiation Monitoring - Automatic Actions for NuScale Power Modules 1 - 6 . . . . 3.17-2 Table 3.17-2: Radiation Monitoring - Inspections, Tests, Analyses, and Acceptance Criteria for NuScale Power Modules 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.17-3 Table 3.18-1: Radiation Monitoring - Automatic Actions For NuScale Power Modules 7 - 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.18-2 Table 3.18-2: Radiation Monitoring Inspections, Tests, Analyses, and Acceptance Criteria For NuScale Power Modules 7 - 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.18-3 Table 5.0-1: Site Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0-2 Tier 1 vi Revision 4

NuScale Tier 1 List of Figures LIST OF FIGURES Figure 2.1-1: Containment System (Isolation Valves). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1-14 Figure 2.5-1: Module Protection System Safety Architecture Overview . . . . . . . . . . . . . . . . . . . . . . 2.5-18 Figure 2.5-2: Reactor Trip Breaker Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5-19 Figure 5.0-1: NuScale Horizontal Certified Seismic Design Response Spectra 5% Damping . . . . 5.0-4 Figure 5.0-2: NuScale Vertical Certified Seismic Design Response Spectra 5% Damping. . . . . . . 5.0-5 Figure 5.0-3: NuScale Horizontal Certified Seismic Design Response Spectra - High Frequency 5% Damping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0-6 Figure 5.0-4: NuScale Vertical Certified Seismic Design Response Spectra - High Frequency 5% Damping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0-7 Tier 1 vii Revision 4

NuScale Tier 1 Introduction CHAPTER 1 INTRODUCTION 1.0 Introduction This document presents the Tier 1 information developed for the NuScale, LLC Power Plant.

The Tier 1 information is the information that is to be certified through rulemaking and includes the Inspections, Tests, Analyses, and Acceptance Criteria required by 10 CFR 52.47(b)(1).

Tier 1 includes the following information:

  • definitions
  • general provisions
  • design descriptions
  • Inspections, Tests, Analyses, and Acceptance Criteria
  • site parameters
  • interface requirements The information presented in Tier 1 is consistent with the information presented in Tier 2.

A graded approach is employed relative to the level of design information presented in Tier 1, i.e., the amount of design information presented is proportional to the safety significance of the structures, systems, and components being addressed.

Tier 1 1.0-1 Revision 4

NuScale Tier 1 Definitions 1.1 Definitions The definitions below apply to terms that may be used in the design descriptions and associated Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC).

Acceptance Criteria refers to the performance, physical condition, or analysis result for structures, systems, and components (SSC), or program that demonstrates that the design commitment is met.

Analysis means a calculation, mathematical computation, or engineering or technical evaluation. Engineering or technical evaluations could include, but are not limited to, comparisons with operating experience or design of similar SSC.

Approved design means the design as described in the updated final safety analysis report (UFSAR), including any changes to the final safety analysis report (FSAR) since submission to the NRC of the last update of the FSAR.

As-built means the physical properties of an SSC following the completion of its installation or construction activities at its final location at the plant site. In cases where it is technically justifiable, determination of physical properties of the as-built SSC may be based on measurements, inspections, or tests that occur prior to installation, provided that subsequent fabrication, handling, installation, and testing do not alter the properties.

ASME Code meansSection III of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, as incorporated by reference in 10 CFR 50.55a with specific conditions or in accordance with relief granted or alternatives authorized by the NRC pursuant to 10 CFR 50.55a, unless a different section of the ASME Code is specifically referenced.

ASME Code Data Report means a document that certifies that a component or system is constructed in accordance with the requirements of the ASME Code. This data is recorded on a form approved by the ASME.

Common or Shared ITAAC means ITAAC that are associated with common or shared SSC and activities that support multiple NPMs. This includes (1) SSC that are common or shared by multiple NPMs, and for which the interface and functional performance requirements between the common or shared SSC and each NPM are identical, or (2) analyses or other generic design and qualification activities that are identical for each NPM (e.g., environmental qualification of equipment). For a multi-module plant, satisfactory completion of a common or shared ITAAC for the lead NPM shall constitute satisfactory completion of the common or shared ITAAC for associated NPMs.

Component, as used for reference to ASME Code components, means a vessel, concrete containment, pump, pressure relief valve, line valve, storage tank, piping system, or core support structure that is designed, constructed, and stamped in accordance with the rules of the ASME Code. ASME Code Section III classifies a metal containment as a vessel.

Design Commitment means that portion of the design description that is verified by ITAAC.

Design Description means that portion of the design that is certified. Design descriptions consist of a system description, system description tables, system description figures, and Tier 1 1.1-1 Revision 4

NuScale Tier 1 Definitions design commitments. System description tables and system description figures are only used when appropriate. The system description is not verified by ITAAC; only the design commitments are verified by ITAAC. System description tables and system description figures are only verified by ITAAC if they are referenced in the ITAAC table.

Inspect or Inspection means visual observations, physical examinations, or reviews of records based on visual observation or physical examination that compare (a) the SSC condition to one or more design commitments or (b) the program implementation elements to one or more program commitments, as applicable. Examples include walkdowns, configuration checks, measurements of dimensions, or nondestructive examinations. The terms, inspect and inspection, also apply to the review of Emergency Planning ITAAC requirements to determine whether ITAAC are met.

ITAAC are those Inspections, Tests, Analyses, and Acceptance Criteria identified in the combined license that if met by the licensee are necessary and sufficient to provide reasonable assurance that the facility has been constructed and will be operated in conformity with the license, the provisions of the Atomic Energy Act, as amended, and the Commission's rules and regulations.

Module-Specific ITAAC means ITAAC that are associated with SSC that are specific to and support operation of a single, individual NuScale Power Module. Module-specific ITAAC shall be satisfactorily completed for each NuScale Power Module.

NuScale Power Module (NPM) is a collection of systems, sub-systems, and components that together constitute a modularized, movable, nuclear steam supply system. The NPM is composed of a reactor core, a pressurizer, and two steam generators integrated within a reactor pressure vessel and housed in a compact steel containment vessel.

Reconciliation or Reconciled means the identification, assessment, and disposition of differences between a design feature as described in the Updated Final Safety Analysis Report and an as-built plant design feature. For ASME Code piping systems, it is the reconciliation of differences between the design as described in the UFSAR and the as-built piping system. For structural features, it is the reconciliation of differences between the design as described in the UFSAR and the as-built structural feature.

Report, as used in the ITAAC table Acceptance Criteria column, means a document that verifies that the acceptance criteria of the subject ITAAC have been met and references the supporting documentation. The report may be a simple form that consolidates all of the necessary information related to the closure package for supporting successful completion of the ITAAC.

Safe Shutdown Earthquake (SSE) Ground Motion is the site-specific vibratory ground motion for which safety-related SSC are designed to remain functional. The SSE for a site is a smoothed spectra developed to envelop the ground motion response spectra. The SSE is characterized at the free ground surface. A combined license (COL) applicant may use the SSE for design of site-specific SSC.

Tier 1 1.1-2 Revision 4

NuScale Tier 1 Definitions System Description (Tier 1) includes

  • a concise description of the system's or structure's safety-related functions, nonsafety-related functions that support safety-related functions, and certain nonsafety risk-significant functions.
  • a listing of components required to perform those functions.
  • identification of the system safety classification.
  • the system components general locations.

The system description may include system description tables and figures.

Test means actuation or operation, or establishment of specified conditions, to evaluate the performance or integrity of as-built SSC, unless explicitly stated otherwise, to determine whether ITAAC are met.

TF-3 is the test facility designed to study fluid elastic instability, vortex shedding, and turbulence due to primary side flow in helical steam generator tubes. Testing consists of modal testing in air and in water, and primary side flow testing with extensive instrumentation to detect vibration.

Tier 1 means the portion of the design-related information contained in the generic Design Control Document that is approved and certified by the design certification rule (Tier 1). The design descriptions, interface requirements, and site parameters are derived from Tier 2 information. Tier 1 includes:

  • definitions and general provisions
  • design descriptions
  • significant site parameters
  • significant interface requirements Top-Level Design Features means the principal performance characteristics and physical attributes that are important to performing the safety-related and certain nonsafety-related functions of the plant.

Type Test means a test on one or more sample components of the same type and manufacturer to qualify other components of the same type and manufacturer. A type test is not necessarily a test of an as-built SSC.

Tier 1 1.1-3 Revision 4

NuScale Tier 1 General Provisions 1.2 General Provisions 1.2.1 Design Descriptions Design descriptions pertain only to the structures, systems, and components (SSC) of the standard design and not to their operation and maintenance after fuel load. In the event of an inconsistency between the design descriptions and the Tier 2 information, the design descriptions in Tier 1 shall govern.

Design descriptions consist of system descriptions, system description tables, system description figures, and design commitments. System description tables and system description figures are only used when appropriate. The system description provides a concise description of the top-level design features and performance characteristics of the SSC system functions, safety classification, and general location. The system description only describes those portions of the system or structure that are important to the top-level design features and performance characteristics of the system or structure. Design commitments are provided in numbered paragraphs that are used to develop the Design Commitment column in the Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC) table. These commitments address top-level design features and performance characteristics such as:

  • seismic classification
  • American Society of Mechanical Engineers Code classification
  • equipment to be qualified for harsh environments
  • instrumentation and controls equipment to be qualified for other than harsh environments The absence of discussion or depiction of SSC in the design description shall not be construed as prohibiting a licensee from using such SSC, unless it would prevent SSC from performing a top-level design feature or performance characteristic, or impairing the performance of those functions, as discussed or depicted in the design description.

When the term operate, operates, or operation is used with respect to equipment discussed in the acceptance criteria, it refers to the actuation or control of the equipment.

1.2.2 Interpretation of System Description Tables Cells with no values in system description tables contain an N/A to denote that the cell is not applicable.

1.2.3 Interpretation of System Description Figures Figures are provided for some systems or structures with the amount of information depicted based on their safety significance. These figures may represent a functional diagram, general structural representation, or other general illustration. Unless specified, these figures are not indicative of the scale, location, dimensions, shape, or spatial relationships of as-built SSC. In particular, the as-built attributes of SSC may vary from the Tier 1 1.2-1 Revision 4

NuScale Tier 1 General Provisions attributes depicted on these figures, provided that the top-level design features discussed in the design description pertaining to the figure are not adversely affected. Valve position indications shown on system description figures do not represent a specific operational state.

The figure legends in Tier 2 Section 1.7 are used to interpret Tier 1 system description figures.

1.2.4 Implementation of Inspections, Tests, Analyses, and Acceptance Criteria Design commitments, inspections, tests, analyses, and acceptance criteria are provided in ITAAC tables with the following format:

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria Each commitment in the Design Commitment column of the ITAAC tables has one or more associated requirements for inspections, tests or analyses specified in the Inspections, Tests, Analyses column. Each inspection, test, or analysis has an associated acceptance criterion in the third column of the ITAAC tables that demonstrate that the Design Commitment in the first column has been met.

Inspections, tests, or analyses may be performed by the licensee or by its authorized vendors, contractors, or consultants.

Inspections, tests, or analyses may be

  • performed by more than a single individual or group.
  • implemented through discrete activities separated by time.
  • performed at any time prior to fuel load, including before issuance of the combined license for those ITAAC that do not require as-built equipment.
  • performed at a location other than the construction site.

Additionally, inspections, tests, or analyses may be performed as part of other activities such as construction inspections and preoperational testing. Therefore, inspections, tests, or analyses need not be performed as a separate or discrete activity.

If an acceptance criteria does not specify the temperature, pressure, or other conditions under which an inspection or test must be performed, then the inspection or test conditions are not constrained.

Many of the Acceptance Criteria state that a report or analysis exists and concludes that...

When these words are used, it indicates that the ITAAC for that Design Commitment will be met when it is confirmed that appropriate documentation exists and the documentation shows that the Design Commitment is met.

For the acceptance criteria, appropriate documentation may be a single document or a collection of documents that show that the stated acceptance criteria are met. Examples of appropriate documentation include:

Tier 1 1.2-2 Revision 4

NuScale Tier 1 General Provisions

  • design reports
  • test reports
  • inspection reports
  • analysis reports
  • evaluation reports
  • design and manufacturing procedures
  • certified data sheets
  • quality assurance records
  • calculation notes
  • equipment qualification data packages Conversion or extrapolation of test results from the test conditions to the design conditions may be necessary to satisfy an ITAAC. Suitable justification should be provided for any conversions or extrapolations of test results necessary to satisfy an ITAAC.

1.2.5 Acronyms and Abbreviations The acronyms and abbreviations contained in Tier 2 Table 1.1-1 are applicable to Tier 1.

Tier 1 1.2-3 Revision 4

Unit Specific Systems, Structures, and Components Design Descriptions NuScale Tier 1 and Inspections, Tests, Analyses, and Acceptance Criteria CHAPTER 2 UNIT SPECIFIC STRUCTURES, SYSTEMS, AND COMPONENTS DESIGN DESCRIPTIONS AND INSPECTIONS, TESTS, ANALYSES, AND ACCEPTANCE CRITERIA 2.0 Unit Specific Systems, Structures, and Components Design Descriptions and Inspections, Tests, Analyses, and Acceptance Criteria This chapter of Tier 1 provides the structures, systems, and components Design Descriptions and Inspections, Tests, Analyses, and Acceptance Criteria for those structures, systems, and components that are specific to and support operation of a single NuScale Power Module.

Unit-specific Inspections, Tests, Analyses, and Acceptance Criteria shall be satisfactorily completed for each NuScale Power Module in a multi-unit plant.

Tier 1 2.0-1 Revision 4

NuScale Tier 1 NuScale Power Module 2.1 NuScale Power Module 2.1.1 Design Description

System Description

The scope of this section is the NuScale Power Module (NPM) and its associated systems.

The NPM is installed in the reactor pool in the Reactor Building (RXB). Up to 12 NPMs may be installed in the Reactor Building. Figure 2.1-1 identifies the mechanical system boundaries for the mechanical systems within the NPM. A description of NPM piping systems is found in Table 2.1-1. The systems contained within the boundary of the NPM are the

All RCS piping is located inside the containment vessel (CNV) and connects to containment piping located outside the CNV via CNV nozzles.

  • control rod drive system (CRDS), including the control rod drive mechanisms (CRDM) with embedded cooling water tubes, cables, and associated cooling water piping. All CRDS piping is located inside the CNV and connects to containment piping located outside the CNV via CNV nozzles. The CRDS also includes instrumentation to provide control rod position indication information.
  • containment system (CNTS), including the containment vessel (CNV) and containment isolation valves (CIVs) and associated piping. All containment piping is located outside the CNV with the exception of CNTS piping used for containment flooding and drain.
  • decay heat removal system (DHRS), including associated piping and valves. DHRS steam piping is located outside the CNV and connects to containment piping outside the CNV. The DHRS condensate lines connect the DHR condensers to the steam generator system (SGS) feedwater piping inside the CNV.
  • All SGS piping is located inside the CNV. The SGS steam piping connects to CNTS steam piping located outside the CNV via CNV nozzles. The SGS feedwater piping connects to the DHRS condenser condensate line inside the CNV.

The NPM includes the pressure retaining structures of these systems because they are part of either the reactor coolant pressure boundary (RCPB) or the CNV pressure boundary.

Therefore, the mechanical design and arrangement of the piping, CRDS, and NPM valves (emergency core cooling, reactor safety, and containment isolation) are included in this section.

The CRDM pressure housings form the pressure boundary between the environments inside the RPV and the CNV. The CRDM pressure housings consist of the latch housing, rod travel housing, and rod travel housing plug.

The ECCS consists of three reactor vent valves (RVVs), two reactor recirculation valves (RRVs), and associated actuators. The RRVs are designed with a minimum flow coefficient of 55 and a maximum flow coefficient of 100. Each RVV and diffuser, as a combined unit, are designed with a minimum flow coefficient of 375 and a maximum flow coefficient of 490.

Tier 1 2.1-1 Revision 4

NuScale Tier 1 NuScale Power Module Additionally, the RVVs are designed with a minimum terminal pressure drop ratio of 0.62 and a maximum terminal pressure drop ratio of 0.90.

Prototypes of the SG assembly will undergo TF-3 testing and meet the acceptance criteria in accordance with the Initial Test Program Steam Generator Flow-Induced Vibration Test.

The results of the testing will be reviewed and approved in accordance with the NuScale Comprehensive Vibration Assessment Program Measurement and Inspection Plan Technical Report prior to loading fuel in the first ever NPM. This one-time testing satisfies TF-3 testing requirements for subsequent NPMs built in accordance with the approved design.

The NPM performs the following safety-related functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The RCS supports the CNTS by supplying the RCPB and a fission product boundary via the RPV and other appurtenances.
  • The CRDS supports the RCS by maintaining the pressure boundary of the RPV.
  • The SGS supports the RCS by supplying part of the RCPB.
  • The ECCS supports the RCS by providing a portion of the RCPB for maintaining the RCPB integrity.
  • The CNTS supports the RXB by providing a barrier to contain mass, energy, and fission product release from a degradation of the RCPB.
  • The ECCS supports the CNTS by providing a portion of the containment boundary for maintaining containment integrity.
  • The CNTS supports the DHRS by providing the required pressure boundary for DHR operation.
  • The RCS supports the SGS by providing physical support for the SG tube supports and for the integral steam and feed plenums.
  • The RCS supports the reactor core by the RVI providing mechanical support to orient, position, and seat the fuel assemblies.
  • The RCS supports the CRDS by the RPV and the RVI supporting and aligning the control rods.
  • The CNTS supports the DHRS by providing structural support for the DHRS piping.
  • The CNTS supports the neutron monitoring system by providing structural support for the ex-core detectors.
  • The RCS supports the ECCS by providing mechanical support for the ECCS valves.
  • The RCS supports the in-core instrumentation system by providing structural support of the in-core instrumentation guide tubes.
  • The CNTS supports the CRDS by providing structural support for the CRDMs.
  • The CNTS supports the RCS by providing structural support for the RPV.
  • The CNTS supports the ECCS by providing structural support of the trip and reset valves for the ECCS reactor vent valves (RVVs) and reactor recirculation valves (RRVs).

Tier 1 2.1-2 Revision 4

NuScale Tier 1 NuScale Power Module

  • The CNTS supports the RCS by closing the CIVs for pressurizer spray, chemical and volume control system (CVCS) makeup, CVCS letdown, and RPV high point degasification when actuated by module protection system (MPS) for RCS Isolation.
  • The CNTS supports the RXB by providing a barrier to contain mass, energy, and fission product release by closure of the CIVs upon containment isolation signal.
  • The CNTS supports the DHRS by closing CIVs for main steam and feedwater and opening DHRS actuation valves when actuated by MPS for DHRS operation.
  • The ECCS supports the RCS by opening the ECCS reactor vent valves and RRVs when their respective trip valve is actuated by MPS.
  • The DHRS supports the RCS by opening the DHRS actuation valves on a DHRS actuation signal.
  • The CNTS supports the MPS by providing MPS actuation instrument information signals through the CNV.

The NPM performs the following nonsafety-related, risk-significant function that is verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The CNTS supports the Reactor Building crane (RBC) by providing lifting attachment points that the RBC can connect to so that the NPM can be lifted.

The NPM performs the following nonsafety-related functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The CNTS supports the SGS by providing structural support for the SGS piping.
  • The CNTS supports the CRDS by providing structural support for the CRDS piping.
  • The CNTS supports the RCS by providing structural support for the RCS piping.
  • The CNTS supports the feedwater system (FWS) by providing structural support for the FWS piping.

Design Commitments

  • The Nuscale Power Module American Society of Mechanical Engineers (ASME) Code Class 1, 2 and 3 piping systems listed in Table 2.1-1 and NuScale Power Module ASME Code Class 1, 2, 3, and CS components listed in Table 2.1-2 comply with ASME Code Section III requirements.
  • The Nuscale Power Module ASME Code Class 1, 2, and 3 components listed in Table 2.1-2 conform to the rules of construction of ASME Code Section III.
  • The Nuscale Power Module ASME Code Class CS components listed in Table 2.1-2 conform to the rules of construction of ASME Code Section III.
  • Safety-related structures, systems, and components (SSC) are protected against the dynamic and environmental effects associated with postulated failures in high- and moderate-energy piping systems.
  • The Nuscale Power Module ASME Code Class 2 piping systems listed in Table 2.1-1 and interconnected equipment nozzles are evaluated for leak-before-break (LBB).
  • The RPV beltline material has a Charpy upper-shelf energy of 75 ft-lb minimum.

Tier 1 2.1-3 Revision 4

NuScale Tier 1 NuScale Power Module

  • The CNV serves as an essentially leak-tight barrier against the uncontrolled release of radioactivity to the environment.
  • Closure times for CIVs listed in Table 2.1-3 limit potential releases of radioactivity.
  • The length of piping listed in Table 2.1-1 shall be minimized between the containment penetration and the associated outboard CIVs.
  • The CNTS containment electrical penetration assemblies listed in Table 2.1-3 are sized to power their design loads.
  • The RPV is provided with surveillance capsule holders to hold a capsule containing RPV material surveillance specimens at locations where the capsules will be exposed to a neutron flux consistent with the objectives of the RPV surveillance program.
  • The remotely-operated CNTS containment isolation valves listed in Table 2.1-2 change position under design-basis temperature, differential pressure, and flow conditions.
  • The ECCS valves listed in Table 2.1-2 change position under design-basis temperature, differential pressure, and flow conditions.
  • The DHRS valves listed in Table 2.1-2 change position under design-basis temperature, differential pressure, and flow conditions.
  • The CNTS hydraulic-operated valves listed in Table 2.1-2 fail to (or maintain) their safety-related position on loss of electrical power under design-basis temperature, differential pressure, and flow conditions.
  • The ECCS RRVs and RVVs listed in Table 2.1-2 fail to (or maintain) their safety-related position on loss of electrical power to their corresponding trip valves under design-basis temperature, differential pressure, and flow conditions.
  • The DHRS hydraulic-operated valves listed in Table 2.1-2 fail to (or maintain) their safety-related position on loss of electrical power under design-basis temperature, differential pressure, and flow conditions.
  • The CNTS check valves listed in Table 2.1-2 change position under design-basis temperature, differential pressure, and flow conditions.
  • Each CNTS containment electrical penetration assembly listed in Table 2.1-3 is rated either (i) to withstand fault and overload currents for the time required to clear the fault from its power source, or (ii) to withstand the maximum fault and overload current for its circuits without a circuit interrupting device.
  • The NPM lifting fixture supports its rated load.
  • The NPM lifting fixture is constructed to provide assurance that a single failure does not result in the uncontrolled movement of the lifted load.
  • The ECCS valves, CIVs, and DHRS actuation valves listed in Table 2.1-2, and their associated hydraulic lines, are installed such that each valve can perform its safety function.

2.1.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 2.1-4 contains the inspections, tests, and analyses for the NPM.

Tier 1 2.1-4 Revision 4

NuScale Tier 1 NuScale Power Module Table 2.1-1: NuScale Power Module Piping Systems Piping System Description ASME Code High/ Evaluated for Length of Section III Moderate LBB Containment Class Energy Piping (ft)

Outside CNV CNTS reactor coolant system injection line valves at CNV nozzle N/A High No 0 (see Note 2) (see Note 1)

CNTS reactor coolant system pressurizer spray line valves at N/A High No 0 CNV nozzle (see Note 2) (see Note 1)

CNTS reactor coolant system discharge line from valves at CNV 3 High No 0 nozzle to NPM disconnect flange (see Note 1)

CNTS reactor coolant system RPV high point degasification line 3 High No 0 valves at CNV nozzle to NPM disconnect flange (see Note 1)

CNTS containment evacuation line valves at CNV nozzle N/A No No 0 (see Note 2) (see Note 1)

CNTS flood and drain line valves at CNV nozzle N/A No No 0 (see Note 2) (see Note 1)

CNTS control rod drive mechanism cooling water supply line N/A No No 0 valves at CNV nozzle (see Note 2) (see Note 1)

CNTS control rod drive mechanism cooling water return line N/A No No 0 valves at CNV nozzle (see Note 2) (see Note 1)

CNTS steam generator #1 feedwater line valves at CNV nozzle N/A High No 0 (see Note 2) (see Note 1)

CNTS steam generator #2 feedwater line valves at CNV nozzle N/A High No 0 (see Note 2) (see Note 1)

CNTS steam generator #1 steam line from CNV nozzle to and 2 High No 4 including CNTS main steam CIV and CNTS main steam bypass valve CIV CNTS steam generator #2 steam line from CNV nozzle to and 2 High No 4 including CNTS main steam CIV and CNTS main steam bypass valve CIV DHRS #1 lines from steam generator #1 steam line to DHRS 2 High No N/A Passive Condenser Train 1 including DHRS actuation valves DHRS #1 condensate line from DHRS Passive Condenser Train 1 2 High No N/A to CNV nozzle DHRS #2 lines from steam generator #2 steam line to DHRS 2 High No N/A Passive Condenser Train 2 including DHR actuation valves DHRS #2 condensate line from DHRS Passive Condenser Train 2 2 High No N/A to CNV nozzle Tier 1 2.1-5 Revision 4

NuScale Tier 1 NuScale Power Module Table 2.1-1: NuScale Power Module Piping Systems (Continued)

Piping System Description ASME Code High/ Evaluated for Length of Section III Moderate LBB Containment Class Energy Piping (ft)

Inside CNV RCS injection line from RPV nozzle to CNV nozzle 1 High No N/A RCS pressurizer spray line from RPV nozzles to CNV nozzle 1 High No N/A RCS discharge line from RPV nozzle to CNV nozzle 1 High No N/A RCS RPV high point degasification line from RPV nozzle to CNV 1 High No N/A nozzle CNTS flood and drain line from CNV nozzle to open pipe end at 2 No No N/A bottom of CNV CRDS control rod drive mechanism cooling water supply line 2 No No N/A from CNV nozzle to CRDM heat exchangers CRDS control rod drive mechanism cooling water return line 2 No No N/A from CRDM heat exchangers to CNV nozzle SGS steam generator #1 feedwater line from RPV nozzles to 2 High Yes N/A CNV nozzle SGS steam generator #2 feedwater line from RPV nozzles to 2 High Yes N/A CNV nozzle SGS steam generator #1 steam line from RPV nozzles to CNV 2 High Yes N/A nozzle SGS steam generator #2 steam line from RPV nozzles to CNV 2 High Yes N/A nozzle DHRS #1 condensate line from CNV nozzle to SG #1 feedwater 2 High No N/A line DHRS #2 condensate line from CNV nozzle to SG #2 feedwater 2 High No N/A line Note:

1) The listed component is welded directly to the safe end which is part of the containment vessel.
2) There is no ASME Class 1, 2, or 3 piping between the listed CNTS valves and the associated CNTS removable spool piece flange. The piping between the valves and the CNTS flange is classified as ASME B31.1.

Tier 1 2.1-6 Revision 4

NuScale Tier 1 NuScale Power Module Table 2.1-2: NuScale Power Module Mechanical Equipment Equipment Name ASME Code Valve Actuator Containment Section III Class Type Isolation Valve RCS integral RPV/SG/Pressurizer 1 N/A N/A RVI upper core plate CS N/A N/A RVI core barrel CS N/A N/A RVI reflector blocks CS N/A N/A RVI lower core plate CS N/A N/A RVI core support blocks CS N/A N/A CNTS containment vessel 1 N/A N/A RCS reactor safety valves (2 Total) 1 N/A No CNTS pressurizer spray check valve 3 N/A No CNTS injection check valve 3 N/A No CNTS discharge excess flow check valve 3 N/A No ECCS reactor vent valves (3 Total) 1 Hydraulic No ECCS reactor vent valve trip valves (4 Total) 1 Solenoid No ECCS reactor vent valve reset valves (3 Total) 1 Solenoid No ECCS reactor recirculation valves (2 Total) 1 Hydraulic No ECCS reactor recirculation valve trip valves (2 Total) 1 Solenoid No ECCS reactor recirculation valve reset valves (2 Total) 1 Solenoid No CNTS solenoid valves 1 Solenoid No CNTS reactor coolant system injection inboard CIV 1 Electro-hydraulic Yes CNTS reactor coolant system injection outboard CIV 1 Electro-hydraulic Yes CNTS pressurizer spray inboard CIV 1 Electro-hydraulic Yes CNTS pressurizer spray outboard CIV 1 Electro-hydraulic Yes CNTS reactor coolant system discharge inboard CIV 1 Electro-hydraulic Yes CNTS reactor coolant system discharge outboard CIV 1 Electro-hydraulic Yes CNTS reactor pressure vessel high point degasification inboard 1 Electro-hydraulic Yes CIV CNTS reactor pressure vessel high point degasification outboard 1 Electro-hydraulic Yes CIV CNTS containment evacuation inboard CIV 1 Electro-hydraulic Yes CNTS containment evacuation outboard CIV 1 Electro-hydraulic Yes CNTS flood and drain inboard CIV 1 Electro-hydraulic Yes CNTS flood and drain outboard CIV 1 Electro-hydraulic Yes CNTS reactor component cooling water system supply inboard 1 Electro-hydraulic Yes CIV CNTS reactor component cooling water system supply outboard 1 Electro-hydraulic Yes CIV CNTS reactor component cooling water system return inboard 1 Electro-hydraulic Yes CIV CNTS reactor component cooling water system return outboard 1 Electro-hydraulic Yes CIV Control rod drive system thermal relief valve 2 N/A No CNTS feedwater #1 CIV 2 Electro-hydraulic Yes CNTS feedwater line #1 check valve 2 N/A No Steam generator #1 relief valve 2 N/A Yes CNTS feedwater #2 CIV 2 Electro-hydraulic Yes CNTS feedwater line #2 check valve 2 N/A No Tier 1 2.1-7 Revision 4

NuScale Tier 1 NuScale Power Module Table 2.1-2: NuScale Power Module Mechanical Equipment (Continued)

Equipment Name ASME Code Valve Actuator Containment Section III Class Type Isolation Valve Steam generator #2 relief valve 2 N/A Yes CNTS main steam #1 CIV 2 Electro-hydraulic Yes CNTS main steam line #1 bypass valve CIV 2 Electro-hydraulic Yes CNTS main steam #2 CIV 2 Electro-hydraulic Yes CNTS main steam line #2 bypass valve CIV 2 Electro-hydraulic Yes DHRS actuation valves (4 Total) 2 Electro-hydraulic No DHRS passive condensers (2 Total) 2 N/A N/A CRDM heat exchangers (16 Total) 2 N/A N/A CRDM cooling water supply flex hoses (16 Total) 2 N/A N/A CRDM cooling water return flex hoses (16 Total) 2 N/A N/A CRDM latch housing 1 N/A N/A CRDM rod travel housing 1 N/A N/A CRDM rod travel housing plug 1 N/A N/A CNTS I&C Division I Electrical Penetration Assembly (EPA) 1 N/A N/A CNTS I&C Division II Electrical Penetration Assembly (EPA) 1 N/A N/A CNTS PZR Heater Power #1 Electrical Penetration Assembly (EPA) 1 N/A N/A CNTS PZR Heater Power #2 Electrical Penetration Assembly (EPA) 1 N/A N/A CNTS I&C Channel A Electrical Penetration Assembly (EPA) 1 N/A N/A CNTS I&C Channel B Electrical Penetration Assembly (EPA) 1 N/A N/A CNTS I&C Channel C Electrical Penetration Assembly (EPA) 1 N/A N/A CNTS I&C Channel D Electrical Penetration Assembly (EPA) 1 N/A N/A CNTS CRD Power Electrical Penetration Assembly (EPA) 1 N/A N/A CNTS RPI Group #1 Electrical Penetration Assembly (EPA) 1 N/A N/A CNTS RPI Group #2 Electrical Penetration Assembly (EPA) 1 N/A N/A RPV Instrument Seal Assemblies (4 Total) 1 N/A N/A Tier 1 2.1-8 Revision 4

NuScale Tier 1 NuScale Power Module Table 2.1-3: NuScale Power Module Electrical Equipment Equipment Name Remotely Loss of Motive CIV Closure Time Operated Power Position (sec)1 ECCS reactor vent valve trip valves (4 Total) Yes Open N/A ECCS reactor vent valve reset valves (3 Total) Yes Close N/A ECCS reactor recirculation valve trip valves (2 Total) Yes Open N/A ECCSreactor recirculation valve reset valves (2 Total) Yes Close N/A CNTS reactor coolant system injection inboard CIV Yes Closed 7 CNTS reactor coolant system injection outboard CIV Yes Closed 7 CNTS pressurizer spray inboard CIV Yes Closed 7 CNTS pressurizer spray outboard CIV Yes Closed 7 CNTS reactor coolant system discharge inboard CIV Yes Closed 7 CNTS reactor coolant system discharge outboard CIV Yes Closed 7 CNTS reactor pressure vessel high point degasification inboard CIV Yes Closed 7 CNTS reactor pressure vessel high point degasification outboard CIV Yes Closed 7 CNTS containment evacuation inboard CIV Yes Closed 7 CNTS containment evacuation outboard CIV Yes Closed 7 CNTS flood and drain inboard CIV Yes Closed 7 CNTS flood and drain outboard CIV Yes Closed 7 CNTS reactor component cooling water system supply inboard CIV Yes Closed 7 CNTS reactor component cooling water system supply outboard CIV Yes Closed 7 CNTS reactor component cooling water system return inboard CIV Yes Closed 7 CNTS reactor component cooling water system return outboard CIV Yes Closed 7 CNTS feedwater #1 CIV Yes Closed 7 CNTS feedwater #2 CIV Yes Closed 7 CNTS main steam #1 CIV Yes Closed 7 CNTS main steam line #1 bypass valve CIV Yes Closed 7 CNTS main steam #2 CIV Yes Closed 7 CNTS main steam line #2 bypass valve CIV Yes Closed 7 DHRS actuation valves (4 Total) Yes Open N/A CNTS I&C Division I Electrical Penetration Assembly (EPA) N/A N/A N/A CNTS I&C Division II Electrical Penetration Assembly (EPA) N/A N/A N/A CNTS PZR Heater Power #1 Electrical Penetration Assembly (EPA) N/A N/A N/A CNTS PZR Heater Power #2 Electrical Penetration Assembly (EPA) N/A N/A N/A CNTS I&C Channel A Electrical Penetration Assembly (EPA) N/A N/A N/A CNTS I&C Channel B Electrical Penetration Assembly (EPA) N/A N/A N/A CNTS I&C Channel C Electrical Penetration Assembly (EPA) N/A N/A N/A CNTS I&C Channel D Electrical Penetration Assembly (EPA) N/A N/A N/A CNTS CRD Power Electrical Penetration Assembly (EPA) N/A N/A N/A CNTS RPI Group #1 Electrical Penetration Assembly (EPA) N/A N/A N/A CNTS RPI Group #2 Electrical Penetration Assembly (EPA) N/A N/A N/A Tier 1 2.1-9 Revision 4

NuScale Tier 1 NuScale Power Module Table 2.1-4: NuScale Power Module Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The NuScale Power Module ASME i. An inspection will be performed of i. The ASME Code Section III Design Code Class 1, 2 and 3 piping systems the NuScale Power Module ASME Reports (NCA-3550) exist and listed in Table 2.1-1 and NuScale Code Class 1, 2 and 3 as-built conclude that the NuScale Power Power Module ASME Code Class 1, 2, 3, piping system Design Reports for Module ASME Code Class 1, 2 and and CS components listed in systems listed in Table 2.1-1 3 as-built piping systems listed in Table 2.1-2 comply with ASME Code required by ASME Code Section III. Table 2.1-1 meet the requirementsSection III requirements. of ASME Code Section III.

ii. An inspection will be performed of ii. The ASME Code Section III Design the NuScale Power Module ASME Reports (NCA-3550) exist and Code Class 1, 2, and 3 as-built conclude that the NuScale Power component Design Reports for Module ASME Code Class 1, 2, and components listed in Table 2.1-2 3 as-built components listed in required by ASME Code Section III. Table 2.1-2 meet the requirements of ASME Code Section III.

iii. An inspection will be performed of iii. The ASME Code Section III Design the NuScale Power Module ASME Reports (NCA-3550) exist and Code Class CS as-built component conclude that the NuScale Power Design Reports for components Module ASME Code Class CS listed in Table 2.1-2 required by as-built components listed in ASME Code Section III. Table 2.1-2 meet the requirements of ASME Code Section III.

2. The NuScale Power Module ASME An inspection will be performed of the ASME Code Section III Data Reports for Code Class 1, 2, and 3 components NuScale Power Module ASME Code the NuScale Power Module ASME listed in Table 2.1-2 conform to the Class 1, 2, and 3 as-built component Code Class 1, 2, and 3 components rules of construction of ASME Code Data Reports for components listed in listed in Table 2.1-2 and Section III. Table 2.1-2 required by ASME Code interconnecting piping exist and Section III. conclude that the requirements of ASME Code Section III are met.
3. The NuScale Power Module ASME An inspection will be performed of the ASME Code Section III Data Reports for Code Class CS components listed in NuScale Power Module ASME Code the NuScale Power Module ASME Table 2.1-2 conform to the rules of Class CS as-built component Data Code Class CS components listed in construction of ASME Code Section III. Reports for components listed in Table 2.1-2 exist and conclude that the Table 2.1-2 required by ASME Code requirements of ASME Code Section III Section III. are met.
4. Safety-related SSC are protected An inspection and analysis will be Protective features are installed in against the dynamic and performed of the as-built high- and accordance with the as-built Pipe environmental effects associated with moderate-energy piping systems and Break Hazard Analysis Report and postulated failures in high- and protective features for the safety-related SSC are protected moderate-energy piping systems. safety-related SSC. against or qualified to withstand the dynamic and environmental effects associated with postulated failures in high- and moderate-energy piping systems.
5. The NuScale Power Module ASME An analysis will be performed of the The as-built LBB analysis for the ASME Code Class 2 piping systems listed in ASME Code Class 2 as-built piping Code Class 2 piping systems listed in Table 2.1-1 and interconnected systems listed in Table 2.1-1 and Table 2.1-1 and interconnected equipment nozzles are evaluated for interconnected equipment nozzles. equipment nozzles is bounded by the LBB. as-designed LBB analysis.

Tier 1 2.1-10 Revision 4

NuScale Tier 1 NuScale Power Module Table 2.1-4: NuScale Power Module Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

6. The RPV beltline material has a Charpy A vendor test will be performed of the An ASME Code Certified Material Test upper-shelf energy of 75 ft-lb Charpy V-Notch specimen of the RPV Report exists and concludes that the minimum. beltline material. initial RPV beltline material Charpy upper-shelf energy is 75 ft-lb minimum.
7. The CNV serves as an essentially leak- A leakage test will be performed of the The leakage rate for local leak rate tight barrier against the uncontrolled pressure containing or leakage- tests (Type B and Type C) for pressure release of radioactivity to the limiting boundaries, and CIVs. containing or leakage-limiting environment. boundaries and CIVs meets the requirements of 10 CFR Part 50, Appendix J.
8. Closure times for CIVs listed in A test will be performed of the Each CIV listed in Table 2.1-3 travels Table 2.1-3 limit potential releases of automatic CIVs listed in Table 2.1-3. from the full open to full closed radioactivity. position in less than or equal to the time listed in Table 2.1-3 after receipt of a containment isolation signal.
9. The length of piping listed in An inspection will be performed of the The length of piping between each Table 2.1-1 shall be minimized as-built piping listed in Table 2.1-1 containment penetration and its between the containment penetration between containment penetrations associated outboard CIV is less than or and the associated outboard CIVs. and associated outboard CIVs. equal to the length identified in Table 2.1-1.
10. The CNTS containment electrical i. An analysis will be performed of i. An electrical rating report exists penetration assemblies listed in the CNTS as-designed that defines and identifies the Table 2.1-3 are sized to power their containment electrical penetration required design electrical rating to design loads. assemblies listed in Table 2.1-3. power the design loads of each CNTS containment electrical penetration assembly listed in Table 2.1-3.

ii. An inspection will be performed of ii. The electrical rating of each CNTS CNTS as-built containment containment electrical penetration electrical penetration assemblies assembly listed in Table 2.1-3 is listed in Table 2.1-3. greater than or equal to the required design electrical rating as specified in the electrical rating report.

11. Not used. Not used. Not used.
12. The RPV is provided with surveillance An inspection will be performed of the Four surveillance capsule holders are capsule holders to hold a capsule as-built RPV surveillance capsule installed in the RPV beltline region at containing RPV material surveillance holders. locations where the capsules will be specimens at locations where the exposed to a neutron flux consistent capsules will be exposed to a neutron with the objectives of the RPV flux consistent with the objectives of surveillance program.

the RPV surveillance program.

13. The remotely-operated CNTS A test will be performed of the Each remotely-operated CNTS containment isolation valves listed in remotely-operated CNTS containment containment isolation valve listed in Table 2.1-2 change position under isolation valves listed in Table 2.1-2 Table 2.1-2 strokes fully open and fully design-basis temperature, differential under preoperational temperature, closed by remote operation under pressure, and flow conditions. differential pressure, and flow preoperational temperature, conditions. differential pressure, and flow conditions.

Tier 1 2.1-11 Revision 4

NuScale Tier 1 NuScale Power Module Table 2.1-4: NuScale Power Module Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

14. The ECCS valves listed in Table 2.1-2 A test will be performed of the ECCS Each ECCS valve listed in Table 2.1-2 change position under design-basis valves listed in Table 2.1-2 under strokes fully open and fully closed by temperature, differential pressure, and preoperational temperature, remote operation under flow conditions. differential pressure, and flow preoperational temperature, conditions. differential pressure, and flow conditions.
15. The DHRS valves listed in Table 2.1-2 A test will be performed of the DHRS Each DHRS valve listed in Table 2.1-2 change position under design-basis valves listed in Table 2.1-2 under strokes fully open and fully closed by temperature, differential pressure, and preoperational temperature, remote operation under flow conditions. differential pressure, and flow preoperational temperature, conditions. differential pressure, and flow conditions.
16. Not used. Not used. Not used.
17. Not used. Not used. Not used.
18. The CNTS hydraulic-operated valves A test will be performed of the CNTS Each CNTS hydraulic-operated valve listed in Table 2.1-2 fail to (or maintain) hydraulic-operated valves listed in listed in Table 2.1-2 fails to (or their safety-related position on loss of Table 2.1-2 under preoperational maintains) its safety-related position electrical power under design-basis temperature, differential pressure, and on loss of motive power under temperature, differential pressure, and flow conditions. preoperational temperature, flow conditions. differential pressure, and flow conditions.
19. The ECCS RRVs and RVVs listed in A test will be performed of the ECCS Each ECCS RRV and RVV listed in Table 2.1-2 fail to (or maintain) their RRVs and RVVs listed in Table 2.1-2 Table 2.1-2 fails to (or maintains) its safety-related position on loss of under preoperational temperature, safety-related position on loss of electrical power to their differential pressure, and flow electrical power to its corresponding corresponding trip valves under conditions. trip valve under preoperational design-basis temperature, differential temperature, differential pressure, and pressure, and flow conditions. flow conditions.
20. The DHRS hydraulic-operated valves A test will be performed of the DHRS Each DHRS hydraulic-operated valve listed in Table 2.1-2 fail to (or maintain) hydraulic-operated valves listed in listed in Table 2.1-2 fails to (or their safety-related position on loss of Table 2.1-2 under preoperational maintains) its safety-related position electrical power under design-basis temperature, differential pressure, and on loss of motive power under temperature, differential pressure, and flow conditions. preoperational temperature, flow conditions. differential pressure, and flow conditions.
21. The CNTS check valves listed in A test will be performed of the CNTS Each CNTS check valve listed in Table 2.1-2 change position under check valves listed in Table 2.1-2 under Table 2.1-2 strokes fully open and design-basis temperature, differential preoperational temperature, closed (under forward and reverse pressure, and flow conditions. differential pressure, and flow flow conditions, respectively) under conditions. preoperational temperature, differential pressure, and flow conditions.

Tier 1 2.1-12 Revision 4

NuScale Tier 1 NuScale Power Module Table 2.1-4: NuScale Power Module Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

22. Each CNTS containment electrical An analysis will be performed of each For each CNTS containment electrical penetration assembly listed in CNTS as-built containment electrical penetration assembly listed in Table 2.1-3 is rated either (i) to penetration assembly listed in Table 2.1-3, either (i) a circuit withstand fault and overload currents Table 2.1-3. interrupting device coordination for the time required to clear the fault analysis exists and concludes that the from its power source, or (ii) to current carrying capability for the withstand the maximum fault and CNTS containment electrical overload current for its circuits without penetration assembly is greater than a circuit interrupting device. the analyzed fault and overload currents for the time required to clear the fault from its power source, or (ii) an analysis of the CNTS containment electrical penetration maximum fault and overload current exists and concludes the fault and overload current is less than the current carrying capability of the CNTS containment electrical penetration.
23. The CNV serves as an essentially A preservice design pressure leakage No water leakage is observed at CNV leaktight barrier against the test of the CNV will be performed. bolted flange connections.

uncontrolled release of radioactivity to the environment.

24. The NPM lifting fixture supports its A rated load test will be performed of The NPM lifting fixture supports a load rated load. the NPM lifting fixture. of at least 150 percent of the manufacturer's rated capacity.
25. The NPM lifting fixture is constructed An inspection will be performed of the The NPM lifting fixture is single-failure-to provide assurance that a single as-built NPM lifting fixture. proof.

failure does not result in the uncontrolled movement of the lifted load.

26. The ECCS valves, CIVs, and DHRS An inspection will be performed of A report exists and concludes each actuation valves listed in Table 2.1-2, each ECCS valve, CIV, and DHRS ECCS valve, CIV, and DHRS actuation and their associated hydraulic lines, actuation valve listed in Table 2.1-2, valve listed in Table 2.1-2, and the are installed such that each valve can and associated hydraulic line. associated hydraulic line, is installed in perform its safety function. accordance with its associated installation specification.

Tier 1 2.1-13 Revision 4

Tier 1 NuScale Tier 1 Figure 2.1-1: Containment System (Isolation Valves)

MS MS NOTE:

ALL COMPONENTS NOT WITHIN A DASHED BOX ARE PART OF THE CNTS TO MS CES CFDS CVCS RCCW FW CNT FROM CVC FROM CVC FROM RCCW FROM FW FROM FW TO/FROM CFD MS-HOV-0101 E MS-HOV-0103 E H H DHRS TO CE TO CVC TO CVC TO RCCW TO DHRS FW RCCW RCCW CNT DHRS TO DHRS CE CFD CVC CVC CVC CVC FW MS MS CNT TO MS CNT CNT CNT CNT CNT CNT CNT CNT CNT CNT MS-HOV-0201 E MS-HOV-0203 E H H CVC-CKV-0336 CVC-CKV-0329 CVC-CKV-0323 DHRS TO DHRS CE-HOV-0002 E CFD-HOV-0021 E CVC-HOV-0335 E CVC-HOV-0330 E CVC-HOV-0324 E CVC-HOV-0402 E RCCW-HOV-0184 E RCCW-HOV-0191 E H H H H H H H H CNT DHRS TO DHRS FW-CKV-0136 FW-CKV-0236 CE-HOV-0001 E CFD-HOV-0022 E CVC-HOV-0334 E CVC-HOV-0331 E CVC-HOV-0325 E CVC-HOV-0401 E RCCW-HOV-0185 E RCCW-HOV-0190 E FW-HOV-0137 E FW-HOV-0237 E H H H H H H H H H H CNV10 CNV11 CNV13 CNV6 CNV7 CNV14 CNV12 CNV5 CNV1 CNV2 CNV3 CNV4 CNT CNT CNT CNT CNT CNT CNT CNT CNT 2.1-14 CNT TO RCS TO RCS TO CRDS NOTE:

ALL COMPONENTS NOT WITHIN A DASHED BOX ARE PART OF THE CNTS RCS RCS RCS CRDS CRDS SG SG SG SG RCS FROM RCS FROM RCS FROM CRDS FROM SG 1 FROM SG 2 RCS CRDS DHRS SGS-RV-0102 SGS-RV-0202 COUPLER CNV22 FROM TO SG DHRS CNV23 FROM TO SG DHRS TO SG TO SG SGS NuScale Power Module Revision 4

NuScale Tier 1 Chemical and Volume Control System 2.2 Chemical and Volume Control System 2.2.1 Design Description

System Description

The scope of this section is the chemical and volume control system (CVCS). The system purifies reactor coolant, manages reactor coolant chemistry, provides reactor coolant inventory injection and discharge, and supplies spray flow to the pressurizer to reduce the reactor coolant system pressure. The CVCS is nonsafety-related. Each NuScale Power Module (NPM) has its own module-specific CVCS. The Reactor Building houses all CVCS equipment.

The CVCS performs the following safety-related system functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The CVCS supports the RCS by isolating dilution sources.

Design Commitments

  • The chemical and volume control system American Society of Mechanical Engineers (ASME) Code Class 3 piping listed in Table 2.2-1 and chemical and volume control system ASME Code Class 3 components listed in Table 2.2-2 comply with ASME Code Section III requirements.
  • The chemical and volume control system ASME Code Class 3 components listed in Table 2.2-2 conform to the rules of construction of ASME Code Section III.
  • The chemical and volume control system ASME Code Class 3 air-operated demineralized water system supply isolation valves listed in Table 2.2-2 change position under design-basis temperature, differential pressure, and flow conditions.
  • The chemical and volume control system ASME Code Class 3 air-operated demineralized water system supply isolation valves listed in Table 2.2-2 perform their function to fail to (or maintain) their position on loss of motive power under design-basis temperature, differential pressure, and flow conditions.

2.2.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 2.2-3 contains the inspections, tests, and analyses for the CVCS.

Tier 1 2.2-1 Revision 4

NuScale Tier 1 Chemical and Volume Control System Table 2.2-1: Chemical and Volume Control System Piping Piping System Description ASME Code Section III Class Demineralized water supply line between DWS Supply Isolation Valves 3 Reactor pressure vessel (RPV) discharge line from the NPM disconnect flange downstream of 3 CVC Discharge containment isolation valve up to and including RPV discharge isolation valve and including NPM removable spool piece RPV high point degasification line from the NPM disconnect flange downstream of RPV High 3 Point Degas containment isolation valve up to and including RPV high point degasification isolation valve and NPM removable spool piece Tier 1 2.2-2 Revision 4

NuScale Tier 1 Chemical and Volume Control System Table 2.2-2: Chemical and Volume Control System Mechanical Equipment Equipment Name ASME Code Section III Loss of Motive Power Class Position Demineralized water system supply isolation valves (2 Total) 3 Closed RPV discharge isolation valve 3 N/A RPV high point degasification isolation valve 3 N/A Tier 1 2.2-3 Revision 4

NuScale Tier 1 Chemical and Volume Control System Table 2.2-3: Chemical and Volume Control System Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The chemical and volume control i. An inspection will be performed i. The ASME Code Section III Design system ASME Code Class 3 piping of the chemical and volume Report (NCA-3550) exists and listed in Table 2.2-1 and chemical and control system ASME Code Class 3 concludes that the chemical and volume control system ASME Code as-built piping Design Report volume control system ASME Code Class 3 components listed in required by ASME Code Section III Class 3 as-built piping listed in Table 2.2-2 comply with the ASME for piping listed in Table 2.2-1. Table 2.2-1 meets the requirements Code Section III requirements. ii. An inspection will be performed of ASME Code Section III.

of the chemical and volume ii. The ASME Code Section III Design control system ASME Code Class 3 Reports (NCA-3550) exist and as-built component Design conclude that the chemical and Reports required by ASME Code volume control system ASME Code Section III for components listed Class 3 as-built components listed in in Table 2.2-2 Table 2.2-2 meet the requirements of ASME Code Section III.

2. The chemical and volume control An inspection will be performed of ASME Code Section III Data Reports for system ASME Code Class 3 the chemical and volume control the chemical and volume control system components listed in Table 2.2-2 system ASME Code Class 3 as-built ASME Code Class 3 components listed in conform to the rules of construction component Data Reports required by Table 2.2-2 and interconnecting piping of ASME Code Section III. ASME Code Section III for exist and conclude that the components listed in Table 2.2-2. requirements of ASME Code Section III are met.
3. The chemical and volume control A test will be performed of the Each chemical and volume control system ASME Code Class 3 chemical and volume control system system ASME Code Class 3 air-operated air-operated demineralized water ASME Code Class 3 air-operated demineralized water system supply system supply isolation valves listed demineralized water system supply isolation valve listed in Table 2.2-2 in Table 2.2-2 change position under isolation valves listed in Table 2.2-2 strokes fully open and fully closed by design-basis temperature, differential under preoperational temperature, remote operation under preoperational pressure, and flow conditions. differential pressure, and flow temperature, differential pressure, and conditions. flow conditions.
4. Not used. Not used. Not used.
5. The chemical and volume control A test will be performed of the Each chemical and volume control system ASME Code Class 3 chemical and volume control system system ASME Code Class 3 air-operated air-operated demineralized water ASME Code Class 3 air-operated demineralized water system supply system supply isolation valves listed demineralized water system supply isolation valve listed in Table 2.2-2 its in Table 2.2-2 perform their function isolation valves listed in Table 2.2-2 function to fail to (or maintain) its to fail to (or maintain) their position under preoperational temperature, position performs on loss of motive on loss of motive power under differential pressure and flow power under preoperational design-basis temperature, differential conditions. temperature, differential pressure, and pressure, and flow conditions. flow conditions.

Tier 1 2.2-4 Revision 4

NuScale Tier 1 Containment Evacuation System 2.3 Containment Evacuation System 2.3.1 Design Description

System Description

The scope of this section is the containment evacuation system (CES). Water vapor and non-condensable gases are removed from the containment vessel by the CES. The water vapor is collected and condensed into the CES sample vessel where it is monitored using level and temperature instrumentation. The CES pressure instrumentation and sample vessel level instrumentation is used to quantify and trend leak rates in the containment.

The CES is a nonsafety-related system. Each NuScale Power Module (NPM) has its own module-specific CES. The Reactor Building houses all CES equipment.

The CES performs the following nonsafety-related system functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:

Design Commitments

  • The CES sample vessel level instrumentation supports RCS leakage detection.
  • The CES inlet pressure instrumentation supports RCS leakage detection.

2.3.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 2.3-1 contains the inspections, tests, and analyses for the CES.

Tier 1 2.3-1 Revision 4

NuScale Tier 1 Containment Evacuation System Table 2.3-1: Containment Evacuation System Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The CES sample vessel level A test will be performed of the CES The CES sample vessel level instrumentation supports RCS leakage sample vessel level instrumention. instrumentation detects a level detection. increase in the CES sample vessel, which correlates to a detection of an unidentified RCS leakage rate of one gpm within one hour.
2. The CES inlet pressure instrumentation A test will be performed of the CES The CES inlet pressure instrumentation supports RCS leakage detection. inlet pressure instrumentation. detects a pressure increase in CES inlet pressure, which correlates to a detection of an unidentified RCS leakage rate of one gpm within one hour.

Tier 1 2.3-2 Revision 4

NuScale Tier 1 Not Used 2.4 Not Used Tier 1 2.4-1 Revision 4

NuScale Tier 1 Not Used Table 2.4-1: Not Used Tier 1 2.4-2 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System 2.5 Module Protection System and Safety Display and Indication System 2.5.1 Design Description

System Description

The scope of this section is the module protection system (MPS) and its associated components in the safety display and indication system (SDIS). The primary purpose of the MPS is to monitor process variables and provide automatic initiating signals in response to out-of-normal conditions to provide protection against unsafe reactor operation during steady state and transient power operation. The MPS is a safety-related system. Each NuScale Power Module has its own independent MPS and SDIS. The Reactor Building and the Control Building house all MPS and SDIS equipment.

The MPS is comprised of the reactor trip system (RTS) and the engineered safety features actuation system (ESFAS). The RTS is responsible for monitoring key variables and shutting down the reactor when specified limits are reached. The ESFAS is responsible for monitoring key variables and actuating the engineered safety features (ESF) such as the emergency core cooling system (ECCS) and the decay heat removal system (DHRS) when specified limits are reached.

The MPS performs the following safety-related system functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The MPS supports the containment system (CNTS) by removing electrical power to the trip solenoids of the following containment isolation valves (CIVs) on a containment system isolation actuation signal:

reactor coolant system (RCS) injection CIVs RCS discharge CIVs pressurizer spray CIVs reactor pressure vessel (RPV) high point degasification containment isolation valves feedwater CIVs main steam CIVs main steam bypass valves containment evacuation (CE) system CIVs reactor component cooling water CIVs containment flooding and drain system (CFDS) containment isolation valves

  • The MPS supports the CNTS by removing electrical power to the trip solenoids of the following valves on a DHRS actuation signal:

DHRS actuation valves main steam CIVs main steam bypass valves Tier 1 2.5-1 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System feedwater CIVs

  • The MPS supports the CNTS by removing electrical power to the trip solenoids of the following valves on a secondary system isolation actuation signal:

main steam CIVs main steam bypass valves feedwater CIVs

  • The MPS supports the ECCS by removing electrical power to the trip solenoids of the following valves on an ECCS actuation signal:

reactor vent valves reactor recirculation valves

  • The MPS supports the CNTS by removing electrical power to the trip solenoids of the following CIVs on a chemical and volume control isolation actuation signal:

RCS injection CIVs RCS discharge CIVs Pressurizer spray CIVs RPV high point degasification CIVs

  • The MPS supports the chemical and volume control system (CVCS) by removing electrical power to the trip solenoids of the demineralized water system supply isolation valves on a demineralized water system isolation actuation signal.
  • The MPS supports the ECCS by removing electrical power to the trip solenoids of the reactor vent valves on a low temperature overpressure protection actuation signal.
  • The MPS supports the low voltage AC electrical distribution system (ELVS) by removing electrical power to the pressurizer heaters on a pressurizer heater trip actuation signal.
  • The MPS supports the following systems by providing power to sensors for reactor trip and ESFAS actuation:

CNTS RCS DHRS (main steam system pressure sensors)

The MPS performs the following nonsafety-related system function that is verified by ITAAC.

  • The MPS supports the following systems by providing power to sensors for post-accident monitoring (PAM) Type B and Type C variables:

CNTS RCS Tier 1 2.5-2 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System The primary purpose of the SDIS is to provide accurate, complete and timely information pertinent to MPS status and information displays. The SDIS provides display panels of MPS post-accident monitoring variables to support manually controlled protective actions if required.

The SDIS performs the following nonsafety-related system function that is verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The SDIS supports the main control room (MCR) by providing displays of PAM Type B and Type C variables.

Design Commitments

  • The MPS design and software are implemented using a quality process composed of the following system design lifecycle phases, with each phase having outputs which satisfy the requirements of that phase:

system concept phase system requirements phase system design phase system implementation phase system test phase system installation and checkout phase

  • Protective measures are provided to restrict modifications to the MPS tunable parameters.
  • Communications independence exists between Separation Groups A, B, C, and D of the Class 1E MPS.
  • Communications independence exists between Divisions I and II of the Class 1E MPS.
  • The MPS automatically initiates an ESF actuation signal for ESF functions listed in Table 2.5-2.
  • The reactor trip logic fails to a safe state such that loss of electrical power to a MPS separation group results in a trip state for that separation group.
  • The ESFs logic fails to a safe state such that loss of electrical power to a MPS separation group results in a safe state listed in Table 2.1-3.
  • The MPS interlocks listed in Table 2.5-4 automatically establish an operating bypass for the specified reactor trip or ESF actuations when the interlock condition is met, and the operating bypass is automatically removed when the interlock condition is no longer satisfied.

Tier 1 2.5-3 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System

  • The MPS permissives listed in Table 2.5-4 allow the manual bypass of the specified reactor trip or ESF actuations when the permissive condition is met, and the operating bypass is automatically removed when the permissive condition is no longer satisfied.
  • The O-1 Override listed in Table 2.5-4 is established when the manual override switch is active and the RT-1 interlock is established. The Override switch must be manually taken out of Override when the O-1 Override is no longer needed.
  • The MPS is capable of performing its safety-related functions when any one of its separation groups is out of service.
  • The reactor trip breakers (RTBs) are installed and arranged as shown in Figure 2.5-2 in order to successfully accomplish the reactor trip function.
  • Two of the four separation groups and one of the two divisions of RTS and ESFAS will utilize a different programmable technology.
  • Physical separation exists (i) between each separation group of the MPS Class 1E instrumentation and control current-carrying circuits, (ii) between each division of the MPS Class 1E instrumentation and control current-carrying circuits, and (iii) between Class 1E instrumentation and control current-carrying circuits and non-Class 1E instrumentation and control current-carrying circuits.
  • Electrical isolation exists (i) between each separation group of the MPS Class 1E instrumentation and control circuits, (ii) between each division of the MPS Class 1E instrumentation and control circuits, and (iii) between Class 1E instrumentation and control circuits and non-Class 1E instrumentation and control circuits to prevent the propagation of credible electrical faults.
  • Electrical isolation exists between the highly reliable DC power system-module-specific (EDSS-MS) subsystem non-Class 1E circuits and connected MPS 1E circuits to prevent the propagation of credible electrical faults.
  • Communications independence exists between the Class 1E MPS and non-Class 1E digital systems.
  • The MPS automatically actuates the ESF equipment to perform its safety-related function listed in Table 2.5-2.
  • The MPS manually actuates the ESF equipment to perform its safety-related function listed in Table 2.5-2.
  • An MPS signal, once initiated (automatically or manually), results in an intended sequence of protective actions that continue until completion, and requires deliberate operator action in order to return the safety systems to normal.
  • The MPS response times from sensor output through equipment actuation for the reactor trip functions and ESF functions are less than or equal to the value required to satisfy the design basis safety analysis response time assumptions.
  • MPS operational bypasses are indicated in the MCR.
  • MPS maintenance bypasses are indicated in the MCR.
  • The MPS self-test features detect faults in the system and provide an alarm in the MCR.
  • The PAM Type B and Type C displays are indicated on the SDIS displays in the MCR.

Tier 1 2.5-4 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System

  • The controls located on the operator workstations in the MCR operate to perform important human actions (IHAs).

2.5.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 2.5-7 contains the inspections, tests, and analyses for the MPS and SDIS.

Tier 1 2.5-5 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-1: Module Protection System Automatic Reactor Trip Functions Parameter Input Variable Interlock/Permissive High source range count rate Source range count rate N-1 permissive High source range log power rate Source range log power N-1 permissive High intermediate range log power rate Intermediate range log power N-2L interlock High-1 power range linear power Power range linear power N-2L permissive High-2 power range linear power Power range linear power None High power range positive rate Power range rate (calculated from power N-2H interlock range power)

High power range negative rate Power range rate (calculated from power N-2H interlock range power)

High narrow range containment pressure Narrow range containment pressure None High narrow range RCS hot temperature Narrow range RCS hot temperature (NR RCS None Thot)

High pressurizer level Pressurizer level None High pressurizer pressure Pressurizer pressure None High main steam pressure Main steam pressure (DHRS inlet pressure) None High main steam superheat Main steam pressure (DHRS inlet pressure) None Main steam temperature (DHRS inlet temperature)

Low AC voltage to battery chargers ELVS voltage None Low low RCS flow RCS flow None Low pressurizer level Pressurizer level None Low pressurizer pressure Pressurizer pressure T-4 interlock Low low pressurizer pressure Pressurizer pressure None Low main steam pressure Main steam pressure (DHRS inlet pressure) N-2H interlock Low low main steam pressure Main steam pressure (DHRS inlet pressure) None Low main steam superheat Main steam pressure (DHRS inlet pressure) V-1 interlock Main steam temperature (DHRS inlet N-2H interlock temperature)

High under-the-bioshield temperature Under-the-bioshield temperature None Tier 1 2.5-6 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-2: Module Protection System Automatic Engineered Safety Feature Functions Engineered Safety Feature Protective Input Variable Interlock/Permissive Function ESFAS - ECCS actuation High containment water level Containment water level T-3 interlock L-2 interlock Low ELVS voltage 24-hour ELVS voltage None timer ESFAS - DHRS actuation High narrow range RCS hot Narrow range RCS hot None temperature temperature (NR RCS Thot)

High pressurizer pressure Pressurizer pressure None High main steam pressure Main steam pressure (DHRS None inlet pressure)

Low AC voltage to battery ELVS voltage None chargers ESFAS - Secondary System High pressurizer pressure Pressurizer pressure None Isolation High narrow range RCS hot Narrow range RCS hot None temperature temperature (NR RCS Thot)

Low main steam pressure Main steam pressure N-2H interlock Low low main steam pressure Main steam pressure L-1 interlock High main steam pressure Main steam pressure None Low main steam superheat Main steam pressure (DHRS L-1 interlock inlet pressure) V-1 interlock Main steam temperature N-2H interlock (DHRS inlet temperature)

High main steam superheat Main steam pressure (DHRS None inlet pressure)

Main steam temperature (DHRS inlet temperature)

High narrow range Narrow range containment T-3 interlock containment pressure pressure L-1 interlock Low low pressurizer pressure Pressurizer pressure T-5 interlock RT-1 interlock Low low pressurizer level Pressurizer level T-2 interlock L-1 interlock Low AC voltage to battery ELVS voltage None chargers High under-the-bioshield Under-the-bioshield None temperature temperature ESFAS - containment system High narrow range Narrow range containment T-3 interlock isolation containment pressure pressure Low AC voltage to battery ELVS voltage None chargers Low low pressurizer level Pressurizer level T-2 interlock L-1 interlock High under-the-bioshield Under-the-bioshield None temperature temperature ESFAS - demineralized water High subcritical Source range count rate N-1 interlock system isolation multiplication Low RCS flow RCS flow None Automatic reactor trip N/A T-5 interlock RT-1 interlock Tier 1 2.5-7 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-2: Module Protection System Automatic Engineered Safety Feature Functions (Continued)

Engineered Safety Feature Protective Input Variable Interlock/Permissive Function ESFAS - chemical and volume High narrow range Narrow range containment T-3 interlock control system isolation containment pressure pressure High pressurizer level Pressurizer level None Low low pressurizer level Pressurizer level T-2 interlock L-1 interlock Low low pressurizer pressure Pressurizer pressure T-5 interlock RT-1 interlock Low low RCS flow RCS flow F-1 interlock RT-1 interlock Low AC voltage to battery ELVS voltage None chargers High under-the-bioshield Under-the-bioshield None temperature temperature ESFAS - pressurizer heater trip Low pressurizer level Pressurizer level None High pressurizer pressure Pressurizer pressure None High narrow range RCS hot Narrow range RCS hot None temperature temperature (NR RCS Thot)

Low AC voltage to battery ELVS voltage None chargers High main steam pressure Main steam pressure (DHRS None inlet pressure)

Low temperature overpressure Low temperature interlock Wide range RCS cold T-1 interlock protection actuation with high pressure temperature (WR RCS Tcold)

Wide range RCS pressure Tier 1 2.5-8 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-3: Module Protection System Manual Switches Reactor trip Operating bypass Emergency core cooling system actuation Containment system isolation actuation Decay heat removal system actuation Secondary system isolation actuation Chemical and volume control system isolation actuation Demineralized water system isolation actuation Pressurizer heater breaker trip Low temperature overpressure protection actuation Main control room isolation Override Enable nonsafety control Tier 1 2.5-9 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-4: Module Protection System Interlocks/Permissives/Overrides Interlock/Permissive/Override F-1 RCS flow interlock L-1 Containment water level interlock L-2 Pressurizer level interlock N-1 Intermediate range log power interlock/permissive N-2H Power range linear power interlock N-2L Power range linear power interlock/permissive O-1 CNTS isolation override RT-1 Reactor tripped interlock T-1 Wide range RCS cold temperature interlock T-2 Wide range RCS hot temperature interlock T-3 Wide range RCS hot temperature interlock T-4 Narrow range RCS hot temperature interlock T-5 Wide range RCS hot temperature interlock V-1 Feedwater isolation valve closed interlock Tier 1 2.5-10 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-5: Safety Display and Indication System Accident Monitoring Variables Variable Type B Type C Source range count rate X Intermediate range log power X Power range linear power X Neutron monitoring system-flood X Core exit temperature X X Core inlet temperature X Wide range RCS pressure X X Degrees of subcooling (calculated from WR RCS Thot and WR RCS pressure) X Wide range RCS hot temperature X RPV riser level X X Wide range containment pressure X X Containment water level X X CIV positions X X Inside bioshield area radiation monitor X X Narrow range containment pressure X Tier 1 2.5-11 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-6: Important Human Actions Controls Component Description Operation CFDS Emergency Flooding Division I enable nonsafety control switch Enable Division II enable nonsafety control switch Enable Division I override switch Override Division II override switch Override Containment drain inlet valve Close Containment drain discharge valve Close Containment drain separator gas discharge valve Close Module flood isolation valve Open/Close Pool suction isolation valve Open CFDS flood/drain selector valve Open CFDS pump discharge flow control valve Open System priming valve Open/Close CFDS pump A case vent valve Open/Close CFDS pump B case vent valve Open/Close Module flood outboard CIV Open/Close Module flood inboard CIV Open/Close CFDS pump A Start/Stop CFDS pump B Start/Stop CVCS Injection Following Containment Isolation Division I enable nonsafety control switch Enable Division II enable nonsafety control switch Enable Division I override switch Override Division II override switch Override Boric acid supply pump A Start/Stop Boric acid supply pump B Start/Stop CVCS makeup aligning valve Open Boric acid supply to CVCS makeup pumps Open CVCS three-way valve Open CVCS isolation valve Open CVCS to module heatup system isolation valve Open CVCS from module heatup system isolation valve Open CVCS isolation valve Open CVCS isolation valve Open CVCS isolation valve Open RCS injection CIVs (2 Total) Open/Close Pressurizer spray CIVs (2 Total) Open/Close CVCS makeup pump A Start/Stop CVCS makeup pump B Start/Stop Tier 1 2.5-12 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-7: Module Protection System and Safety Display and Indication System Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. i. The MPS design and software i.a. An analysis will be performed of i.a. The output documentation of the are implemented using a the output documentation of the MPS Concept Phase satisfies the quality process composed of System Concept Phase. requirements of the System Concept the following system design Phase.

lifecycle phases, with each i.b. An analysis will be performed of i.b. The output documentation of the phase having outputs which the output documentation of the MPS Requirements Phase satisfies the satisfy the requirements of that System Requirements Phase. requirements of the System phase. Requirements Phase.

i.a. System Concept Phase i.c. An analysis will be performed of i.c. The output documentation of the i.b. System Requirements Phase the output documentation of the MPS Design Phase satisfies the i.c. System Design Phase System Design Phase. requirements of the System Design i.d. System Implementation Phase Phase.

i.e. System Test Phase i.d. An analysis will be performed of i.d. The output documentation of the i.f. System Installation and the output documentation of the MPS Implementation Phase satisfies Checkout Phase System Implementation Phase. the requirements of the System Implementation Phase.

i.e. An analysis will be performed of i.e. The output documentation of the the output documentation of the MPS Test Phase satisfies the System Test Phase. requirements of the System Test Phase.

i.f. An analysis will be performed of i.f. The output documentation of the the output documentation of the MPS Installation and Checkout Phase System Installation and Checkout satisfies the requirements of the Phase. System Installation and Checkout Phase.

ii. Protective measures are ii. Test will be performed on the ii. Protective measures restrict provided to restrict access control features modification to the MPS tunable modifications to the MPS associated with MPS tunable parameters without proper tunable parameters. parameters. configuration and authorization.

iii.a. Communications iii. A test will be performed of the iii.a. Communications independence independence exists between Class 1E MPS. between Separation Groups A, B, C, Separation Groups A, B, C, and and D of the Class 1E MPS is D of the Class 1E MPS. provided.

iii.b. Communications iii.b. Communications independence independence exists between between Division I and II of the Class Divisions I and II of the Class 1E 1E MPS is provided.

MPS.

iv. The MPS automatically initiates iv. A test will be performed of the iv. Reactor trip signal is automatically a reactor trip signal for reactor MPS. initiated for each reactor trip trip functions listed in function listed in Table 2.5-1.

Table 2.5-1.

v. The MPS automatically initiates v. A test will be performed of the v. An ESF actuation signal is an ESF actuation signal for ESF MPS. automatically initiated for each ESF functions listed in Table 2.5-2. function listed in Table 2.5-2.

vi. The MPS automatically vi. A test will be performed of the vi. The RTBs open upon an injection of a actuates a reactor trip. MPS. single simulated MPS reactor trip signal.

vii. The MPS manually actuates a vii. A test will be performed of the vii. The RTBs open when a reactor trip is reactor trip. MPS. manually initiated from the main control room.

Tier 1 2.5-13 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-7: Module Protection System and Safety Display and Indication System Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria viii. The reactor trip logic fails to a viii. A test will be performed of the viii. Loss of electrical power in a safe state such that loss of MPS. separation group results in a trip electrical power to a MPS state for that separation group.

separation group results in a trip state for that separation group.

ix. The ESFs logic fails to a safe ix. A test will be performed of the ix. Loss of electrical power in a state such that loss of electrical MPS. separation group results in the safe power to a MPS separation state listed in Table 2.1-3.

group results in a safe state listed in Table 2.1-3.

x. The MPS interlocks listed in x. A test will be performed of the x. The MPS interlocks listed in Table Table 2.5-4 automatically MPS. 2.5-4 automatically establish an establish an operating bypass operating bypass for the specified for the specified reactor trip or reactor trip or ESF actuations when ESF actuations when the the interlock condition is met. The interlock condition is met, and operating bypass is automatically the operating bypass is removed when the interlock automatically removed when condition is no longer satisfied.

the interlock condition is no longer satisfied.

xi. The MPS permissives listed in xi. A test will be performed of the xi. The MPS permissives listed in Table 2.5-4 allow the manual MPS. Table 2.5-4 allow the manual bypass bypass of the specified reactor of the specified reactor trip or ESF trip or ESF actuations when the actuations when the permissive permissive condition is met, condition is met. The operating and the operating bypass is bypass is automatically removed automatically removed when when the permissive condition is no the permissive condition is no longer satisfied.

longer satisfied.

xii. The O-1 Override listed in xii. A test will be performed of the xii. The O-1 Override listed in Table 2.5-4 Table 2.5-4 is established when MPS. is established when the manual the manual override switch is override switch is active and the RT-1 active and the RT-1 interlock is interlock is established. The Override established. The Override switch must be manually taken out switch must be manually taken of Override when the O-1 Override is out of Override when the O-1 no longer needed.

Override is no longer needed.

xiii. The MPS is capable of xiii. A test will be performed of the xiii. The MPS performs its safety-related performing its safety-related MPS. functions if any one of its separation functions when any one of its groups is out of service.

separation groups is out of service.

xiv. The RTBs are installed and xiv. An inspection will be performed xiv. The RTBs have the proper arranged as shown in of the as-built RTBs, including the connections for the shunt and Figure 2.5-2 in order to connections for the shunt and undervoltage trip mechanisms and successfully accomplish the undervoltage trip mechanism auxiliary contacts, and are arranged reactor trip function. and auxiliary contacts. as shown in Figure 2.5-2 to successfully accomplish the reactor trip function.

Tier 1 2.5-14 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-7: Module Protection System and Safety Display and Indication System Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria xv. Two of the four separation xv. An inspection will be performed xv. Separation groups A & C and groups and one of the two of the as-built MPS. Division I of RTS and ESFAS utilize a divisions of RTS and ESFAS will different programmable technology utilize a different from separation groups B & D and programmable technology. Division II of RTS and ESFAS.

2. Not used. Not used. Not used.
3. Physical separation exists (i) An inspection will be performed of i. Physical separation between each between each separation group of the MPS Class 1E as-built separation group of the MPS Class 1E the MPS Class 1E instrumentation instrumentation and control current- instrumentation and control current-and control current-carrying circuits, carrying circuits. carrying circuits is provided by a (ii) between each division of the minimum separation distance, or by MPS Class 1E instrumentation and barriers (where the minimum control current-carrying circuits, and separation distances cannot be (iii) between Class 1E maintained), or by a combination of instrumentation and control separation distance and barriers.

current-carrying circuits and non- ii. Physical separation between each Class 1E instrumentation and division of the MPS Class 1E control current-carrying circuits. instrumentation and control current-carrying circuits is provided by a minimum separation distance, or by barriers (where the minimum separation distances cannot be maintained), or by a combination of separation distance and barriers.

iii. Physical separation between MPS Class 1E instrumentation and control current-carrying circuits and non-Class 1E instrumentation and control current-carrying circuits is provided by a minimum separation distance, or by barriers (where the minimum separation distances cannot be maintained), or by a combination of separation distance and barriers.

4. Electrical isolation exists (i) between An inspection will be performed of i. Class 1E electrical isolation devices each separation group of the MPS the MPS Class 1E as-built are installed between each Class 1E instrumentation and instrumentation and control circuits. separation group of the MPS Class 1E control circuits, (ii) between each instrumentation and control circuits.

division of the MPS Class 1E ii. Class 1E electrical isolation devices instrumentation and control circuits, are installed between each division of and (iii) between Class 1E the MPS Class 1E instrumentation and instrumentation and control circuits control circuits.

and non-Class 1E instrumentation iii. Class 1E electrical isolation devices and control circuits to prevent the are installed between MPS Class 1E propagation of credible electrical instrumentation and control circuits faults. and non-Class 1E instrumentation and control circuits.

Tier 1 2.5-15 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-7: Module Protection System and Safety Display and Indication System Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

5. Electrical isolation exists between i. A type test, analysis, or a i. The Class 1E circuit does not degrade the EDSS-MS subsystem non-Class combination of type test and below defined acceptable operating 1E circuits and connected MPS Class analysis will be performed of the levels when the non-Class 1E side of 1E circuits to prevent the Class 1E isolation devices. the isolation device is subjected to propagation of credible electrical the maximum credible voltage, faults. current transients, shorts, grounds, or open circuits.

ii. An inspection will be performed ii. Class 1E electrical isolation devices of the MPS Class 1E as-built are installed between the EDSS-MS circuits. Subsystem non-Class 1E circuits and connected MPS Class 1E circuits.

6. Not used. Not used. Not used.
7. Communications independence A test will be performed of the Class Communications independence between exists between the Class 1E MPS and 1E MPS. the Class 1E MPS and non-Class 1E digital non-Class 1E digital systems. systems is provided.
8. Not used. Not used. Not used.
9. Not used. Not used. Not used.
10. Not used. Not used. Not used.
11. The MPS automatically actuates the A test will be performed of the MPS. The ESF equipment automatically ESF equipment to perform its actuates to perform its safety-related safety-related function listed in function listed in Table 2.5-2 upon an Table 2.5-2. injection of a single simulated MPS signal.
12. Not used. Not used. Not used.
13. The MPS manually actuates the ESF A test will be performed of the MPS. The MPS actuates the ESF equipment to equipment to perform its safety- perform its safety-related function listed related function listed in Table 2.5-2. in Table 2.5-2 when manually initiated.
14. Not used. Not used. Not used.
15. Not used. Not used. Not used.
16. An MPS signal once initiated A test will be performed of the MPS i. Upon initiation of a real or simulated (automatically or manually), results reactor trip and engineered safety MPS reactor trip signal listed in in an intended sequence of features signals. Table 2.5-1, the RTBs open, and the protective actions that continue RTBs do not automatically close when until completion, and requires the MPS reactor trip signal clears.

deliberate operator action in order ii. Upon initiation of a real or simulated to return the safety systems to MPS engineered safety feature normal. actuation signal listed in Table 2.5-2, the ESF equipment actuates to perform its safety-related function and continues to maintain its safety-related position and perform its safety-related function when the MPS engineered safety feature actuation signal clears.

17. The MPS response times from A test will be performed of the MPS. The MPS reactor trip functions listed in sensor output through equipment Table 2.5-1 and ESFs functions listed in actuation for the reactor trip Table 2.5-2 have response times that are functions and ESF functions are less less than or equal to the design basis than or equal to the value required safety analysis response time to satisfy the design basis safety assumptions.

analysis response time assumptions.

18. Not used. Not used. Not used.

Tier 1 2.5-16 Revision 4

NuScale Tier 1 Module Protection System and Safety Display and Indication System Table 2.5-7: Module Protection System and Safety Display and Indication System Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

19. Not used. Not used. Not used.
20. Not used. Not used. Not used.
21. Not used. Not used. Not used.
22. MPS operational bypasses are A test will be performed of the MPS. Each operational MPS manual or indicated in the MCR. automatic bypass is indicated in the MCR.
23. MPS maintenance bypasses are A test will be performed of the MPS. Each maintenance bypass is indicated in indicated in the MCR. the MCR.
24. The MPS self-test features detect A test will be performed of the MPS. A report exists and concludes that:

faults in the system and provide an

  • Self-testing features verify that faults alarm in the MCR. requiring detection are detected.
  • Self-testing features verify that upon detection, the system responds according to the type of fault.
  • Self-testing features verify that faults are detected and responded within a sufficient timeframe to ensure safety function is not lost.
  • The presence and type of fault is indicated by the MPS alarms and displays.
25. The PAM Type B and Type C displays An inspection will be performed for The PAM Type B and Type C displays are indicated on the SDIS displays in the ability to retrieve the as-built PAM listed in Table 2.5-5 are retrieved and the MCR. Type B and Type C displays on the displayed on the SDIS displays in the SDIS displays in the MCR. MCR.
26. The controls located on the A test will be performed of the The IHAs controls provided on the operator workstations in the MCR controls on the operator workstations operator workstations in the MCR operate to perform IHAs. in the MCR. perform the functions listed in Table 2.5-6.
27. Not used. Not used. Not used.
28. Not used. Not used. Not used.

Tier 1 2.5-17 Revision 4

Tier 1 NuScale Tier 1 Figure 2.5-1: Module Protection System Safety Architecture Overview P T L N F P T L N F P T L N F P T L N F Signal Conditioning Signal Conditioning Signal Conditioning Signal Conditioning A B C D Monitoring Monitoring Trip Determination Trip Determination Trip Determination Trip Determination and and A B C D Indication Indication Module Protection System and Safety Display and Indication System 2.5-18 Monitoring Monitoring ESFAS Voting and RTS Voting RTS Voting and ESFAS Voting I Indication I II Indication II Priority Logic I Manual Priority Logic I Priority Logic II Manual Priority Logic II Actuation Actuation ESFAS Equipment ESFAS Equipment Reactor Trip Breakers LEGEND RTS Reactor Trip System ESFAS Engineered Safety Features Actuation System Hard-wired Signal One-way Serial Connection Triple Modular Redundant One-Way Serial Data Connection Revision 4

Tier 1 NuScale Tier 1 Figure 2.5-2: Reactor Trip Breaker Arrangement RTS Voting RTS Voting I II Manual Manual Priority Logic I Priority Logic II Trip Trip Control Rod From EDNS Drive System Module Protection System and Safety Display and Indication System 2.5-19 Reactor Trip Breakers Revision 4

NuScale Tier 1 Neutron Monitoring System 2.6 Neutron Monitoring System 2.6.1 Design Description

System Description

The scope of this section is the neutron monitoring system (NMS). The NMS is a safety-related system. Each NuScale Power Module has its own module-specific NMS. The Reactor Building houses all NMS equipment.

The NMS monitors the neutron flux level of the reactor core by detecting neutron leakage from the core. The NMS measures neutron flux as an indication of core power and provides safety-related inputs to the module protection system.

The NMS performs the following safety-related system function that is verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The NMS supports the module protection system by providing neutron flux data for various reactor trips.

Design Commitments

  • Electrical isolation exists between the NMS Class 1E circuits and connected non-Class 1E circuits to prevent the propagation of credible electrical faults.
  • Physical separation exists between the redundant divisions of the NMS Class 1E instrumentation and control current-carrying circuits, and between Class 1E instrumentation and control current-carrying circuits and non-Class 1E instrumentation and control current-carrying circuits.
  • Electrical isolation exists between the redundant divisions of the NMS Class 1E instrumentation and control circuits, and between Class 1E instrumentation and control circuits and non-Class 1E instrumentation and control circuits to prevent the propagation of credible electrical faults.

2.6.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 2.6-1 contains the inspections, tests, and analyses for the NMS.

Tier 1 2.6-1 Revision 4

NuScale Tier 1 Neutron Monitoring System Table 2.6-1: Neutron Monitoring Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. Electrical isolation exists between the i. A type test, analysis, or a i. The Class 1E circuit does not NMS Class 1E circuits and connected combination of type test and degrade below defined acceptable non-Class 1E circuits to prevent the analysis will be performed of the operating levels when the non-propagation of credible electrical Class 1E isolation devices. Class 1E side of the isolation device faults. ii. An inspection will be performed of is subjected to the maximum the NMS Class 1E as-built circuits. credible voltage, current transients, shorts, grounds, or open circuits.

ii. Class 1E electrical isolation devices are installed between NMS Class 1E circuits and connected non-Class 1E circuits.

2. Physical separation exists between the An inspection will be performed of the i. Physical separation between redundant divisions of the NMS Class NMS Class 1E as-built instrumentation redundant divisions of NMS Class 1E instrumentation and control and control current-carrying circuits. 1E instrumentation and control current-carrying circuits, and between current-carrying circuits is Class 1E instrumentation and control provided by a minimum current-carrying circuits and non-Class separation distance, or by barriers 1E instrumentation and control (where the minimum separation current-carrying circuits. distances cannot be maintained),

or by a combination of separation distance and barriers.

ii. Physical separation between NMS Class 1E instrumentation and control current-carrying circuits and non-Class 1E instrumentation and control current-carrying circuits is provided by a minimum separation distance, or by barriers (where the minimum separation distances cannot be maintained),

or by a combination of separation distance and barriers.

3. Electrical isolation exists between the An inspection will be performed of the i. Class 1E electrical isolation devices redundant divisions of the NMS Class NMS Class 1E as-built instrumentation are installed between redundant 1E instrumentation and control and control circuits. divisions of NMS Class 1E circuits, and between Class 1E instrumentation and control instrumentation and control circuits circuits.

and non-Class 1E instrumentation and ii. Class 1E electrical isolation devices control circuits to prevent the are installed between NMS Class propagation of credible electrical 1E instrumentation and control faults. circuits and non-Class 1E instrumentation and control circuits.

Tier 1 2.6-2 Revision 4

NuScale Tier 1 Radiation Monitoring Module Specific 2.7 Radiation Monitoring Module Specific 2.7.1 Design Description

System Description

The scope of this section is automatic actions of various systems based on radiation monitoring. Automatic actions of systems based on radiation monitoring are nonsafety-related functions. The components actuated by these automatic radiation monitoring functions are contained in module-specific systems.

Design Commitments

  • The containment evacuation system (CES) automatically responds to the CES high radiation signal listed in Table 2.7-1 to mitigate a release of radioactivity.
  • The chemical and volume control system (CVCS) automatically responds to the CVCS and auxiliary boiler system (ABS) high radiation signals listed in Table 2.7-1 to mitigate a release of radioactivity.

2.7.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 2.7-2 contains the inspections, tests, and analyses for the radiation monitoring - module-specific automatic actions.

Tier 1 2.7-1 Revision 4

NuScale Tier 1 Radiation Monitoring Module Specific Table 2.7-1: Radiation Monitoring - Module-Specific Automatic Actions Variable Monitored Actuated Component(s) Component Action(s)

CES vacuum pump 1. CES effluent to Reactor Building heating ventilation and air 1. Close discharge conditioning system isolation valve

2. CES effluent to gaseous waste management system isolation 2. Open valve
3. CES effluent to process sample panel isolation valve 3. Close
4. CES purge air solenoid valve to CES vacuum pump A 4. Close
5. CES purge air solenoid valve to CES vacuum pump A 5. Close
6. CES purge air solenoid valve to CES vacuum pump A 6. Close
7. CES purge air solenoid valve to CES vacuum pump B 7. Close
8. CES purge air solenoid valve to CES vacuum pump B 8. Close
9. CES purge air solenoid valve to CES vacuum pump B 9. Close Reactor coolant system 1. Reactor coolant system discharge to process sampling 1. Close discharge to regenerative system isolation valve heat exchanger AB system steam flow to 0A 1. CVCS module heatup system 0A & 0B heat exchanger 1. Close module heatup system heat isolation valve exchanger 2. CVCS module heatup system 0A & 0B heat exchanger 2. Close isolation valve Auxiliary boiler system 1. CVCS module heatup system 0A & 0B heat exchanger 1. Close steam flow to 0B module isolation valve heatup system heat 2. CVCS module heatup system 0A & 0B heat exchanger 2. Close exchanger isolation valve Tier 1 2.7-2 Revision 4

NuScale Tier 1 Radiation Monitoring Module Specific Table 2.7-2: Radiation Monitoring - Module-Specific Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The CES automatically responds to the A test will be performed of the CES Upon initiation of a real or simulated CES high radiation signal listed in high radiation signal listed in CES high radiation signal listed in Table 2.7-1 to mitigate a release of Table 2.7-1. Table 2.7-1, the CES automatically radioactivity. aligns/actuates the identified components to the positions identified in the table.
2. The CVCS automatically responds to A test will be performed of the CVCS Upon initiation of the real or simulated the CVCS and ABS high radiation and ABS high radiation signals listed in CVCS and ABS high radiation signals signals listed in Table 2.7-1 to mitigate Table 2.7-1. listed in Table 2.7-1, the CVCS a release of radioactivity. automatically aligns/actuates the identified component(s) to the position identified in the table.

Tier 1 2.7-3 Revision 4

NuScale Tier 1 Equipment Qualification 2.8 Equipment Qualification 2.8.1 Design Description

System Description

The scope of this section is equipment qualification (EQ) of equipment specific to each NuScale Power Module. Equipment qualification applies to safety-related electrical and mechanical equipment and safety-related digital instrumentation and controls equipment.

Additionally, this section applies to a limited population of module-specific, nonsafety-related equipment that has augmented Seismic Category I or environmental qualification requirements. The nonsafety-related equipment in this section has one of the following design features:

  • Nonsafety-related mechanical and electrical equipment located within the boundaries of the NuScale Power Module that has an augmented Seismic Category I or environmental qualification design requirement.
  • Nonsafety-related mechanical and electrical equipment that performs a credited function in Chapter 15 analyses (secondary main steam isolation valves (MSIV),

feedwater regulating valves (FWRV) and secondary feedwater check valves).

Design Commitments

  • The module-specific Seismic Category I equipment listed in Table 2.8-1, including its associated supports and anchorages, withstands design basis seismic loads without loss of its function(s) during and after a safe shutdown earthquake (SSE).
  • The module-specific electrical equipment located in a harsh environment listed in Table 2.8-1, including associated connection assemblies, withstand the design basis harsh environmental conditions experienced during normal operations, anticipated operational occurrences (AOOs), design basis accidents (DBAs), and post-accident conditions, and performs its function for the period of time required to complete the function.
  • The non-metallic parts, materials, and lubricants used in module-specific mechanical equipment listed in Table 2.8-1 perform their function up to the end of their qualified life in the design basis harsh environmental conditions (both internal service conditions and external environmental conditions) experienced during normal operations, AOOs, DBAs, and post-accident conditions.
  • The Class 1E computer-based instrumentation and control systems listed in Table 2.8-1 located in a mild environment withstand design basis mild environmental conditions without loss of safety-related functions.
  • The Class 1E digital equipment listed in Table 2.8-1 performs its safety-related function when subjected to the design basis electromagnetic interference, radio frequency interference, and electrical surges that would exist before, during, and following a DBA.
  • The valves listed in Table 2.8-1 are functionally designed and qualified to perform their safety-related function under the full range of fluid flow, differential pressure, electrical, temperature, and fluid conditions up to and including DBA conditions.

Tier 1 2.8-1 Revision 4

NuScale Tier 1 Equipment Qualification

  • The safety-related relief valves listed in Table 2.8-1 provide overpressure protection.
  • The DHRS condensers listed in Table 2.8-1 have the capacity to transfer their design heat load.
  • The containment system (CNTS) containment electrical penetration assemblies listed in Table 2.8-1, including associated connection assemblies, withstand the design basis harsh environmental conditions experienced during normal operations, AOOs, DBAs, and post-accident conditions, and performs its function for the period of time required to complete the function.

2.8.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 2.8-2 contains the inspections, tests, and analyses for equipment qualification - module-specific equipment.

Tier 1 2.8-2 Revision 4

Tier 1 NuScale Tier 1 Table 2.8-1: Module Specific Mechanical and Electrical/I&C Equipment Description Location EQ Qualification Seismic Class 1E EQ Environment Program Category I Category(1)

Containment System CNTS I&C Division I Electrical Penetration RXB - Top of Module Harsh Electrical Yes No A Assembly (EPA) RXB - Inside Containment Mechanical CNTS I&C Division II Electrical Penetration RXB - Top of Module Harsh Electrical Yes No A Assembly (EPA) RXB - Inside Containment Mechanical CNTS PZR Heater Power #1 Electrical Penetration RXB - Top of Module Harsh Electrical Yes No A Assembly (EPA) RXB - Inside Containment Mechanical CNTS PZR Heater Power #2 Electrical Penetration RXB - Top of Module Harsh Electrical Yes No A Assembly (EPA) RXB - Inside Containment Mechanical CNTS I&C Channel A Electrical Penetration RXB - Top of Module Harsh Electrical Yes Yes A Assembly (EPA) RXB - Inside Containment Mechanical CNTS I&C Channel B Electrical Penetration RXB - Top of Module Harsh Electrical Yes Yes A Assembly (EPA) RXB - Inside Containment Mechanical CNTS I&C Channel C Electrical Penetration RXB - Top of Module Harsh Electrical Yes Yes A 2.8-3 Assembly (EPA) RXB - Inside Containment Mechanical CNTS I&C Channel D Electrical Penetration RXB - Top of Module Harsh Electrical Yes Yes A Assembly (EPA) RXB - Inside Containment Mechanical CNTS CRD Power Electrical Penetration Assembly RXB - Top of Module Harsh Electrical Yes No A (EPA) RXB - Inside Containment Mechanical CNTS RPI Group #1 Electrical Penetration RXB - Top of Module Harsh Electrical Yes No A Assembly (EPA) RXB - Inside Containment Mechanical CNTS RPI Group #2 Electrical Penetration RXB - Top of Module Harsh Electrical Yes No A Assembly (EPA) RXB - Inside Containment Mechanical MS #1 CIV (MSIV #1) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical MS #2 CIV (MSIV #2) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical Equipment Qualification MS line #1 Bypass Valve (MSIV Bypass #1) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical MS line #2 Bypass Valve (MSIV Bypass #2) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical Revision 4 FW #1 CIV (FWIV #1) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical

Table 2.8-1: Module Specific Mechanical and Electrical/I&C Equipment (Continued)

Tier 1 NuScale Tier 1 Description Location EQ Qualification Seismic Class 1E EQ Environment Program Category I Category(1)

FW #2 CIV (FWIV #2) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical FW line #1 Check Valve RXB - Top of Module Harsh Mechanical Yes N/A AB FW line #2 Check Valve RXB - Top of Module Harsh Mechanical Yes N/A AB CVC Discharge CIVs (2 Total) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical CVC Injection CIVs (2 Total) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical CVC PZR Spray CIVs (2 Total) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical RPV High Point Degas CIVs (2 Total) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical RCCW Supply CIVs (2 Total) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical RCCW Return CIVs (2 Total) RXB - Top of Module Harsh Electrical Yes Yes AB 2.8-4 Mechanical CE CIVs (2 Total) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical CFDS CIVs (2 Total) RXB - Top of Module Harsh Electrical Yes Yes AB Mechanical CNTS Check Valves and Excess Flow Check Valves RXB - Top of Module Harsh Mechanical Yes N/A AB (3 Total)

Hydraulic Skids (2 Total) RXB - 100 Harsh Electrical Yes No A RXB - 120' Mechanical Containment Pressure Transducers (Narrow RXB - Inside Containment Harsh Electrical Yes Yes A Range) (4 Total)

Containment Pressure Transducers (Wide Range) RXB - Inside Containment Harsh Electrical Yes No A (2 Total)

Equipment Qualification Containment Water Level Sensors (Radar RXB - Top of Module Harsh Electrical Yes Yes A Transceiver) (4 Total) RXB - Inside Containment SG #1 Steam Temperature Sensors (RTD) RXB - Top of Module Harsh Electrical Yes Yes A (4 Total)

Revision 4 SG #2 Steam Temperature Sensors (RTD) RXB - Top of Module Harsh Electrical Yes Yes A (4 Total)

Table 2.8-1: Module Specific Mechanical and Electrical/I&C Equipment (Continued)

Tier 1 NuScale Tier 1 Description Location EQ Qualification Seismic Class 1E EQ Environment Program Category I Category(1)

CE Inboard CIV Close Position Sensor RXB - Top of Module Harsh Electrical Yes No A CE Inboard CIV Open Position Sensor RXB - Top of Module Harsh Electrical Yes No A CE Outboard CIV Close Position Sensor RXB - Top of Module Harsh Electrical Yes No A CE Outboard CIV Open Position Sensor RXB - Top of Module Harsh Electrical Yes No A CFD Inboard CIV Close Position Sensor RXB - Top of Module Harsh Electrical Yes No A CFD Inboard CIV Open Position Sensor RXB - Top of Module Harsh Electrical Yes No A CFD Outboard CIV Close Position Sensor RXB - Top of Module Harsh Electrical Yes No A CFD Outboard CIV Open Position Sensor RXB - Top of Module Harsh Electrical Yes No A CVCS Inboard RCS Discharge CIV Close Position RXB - Top of Module Harsh Electrical Yes No A Sensor CVCS Inboard RCS Discharge CIV Open Position RXB - Top of Module Harsh Electrical Yes No A Sensor CVCS Outboard CIV RCS Discharge Close Position RXB - Top of Module Harsh Electrical Yes No A Sensor CVCS Outboard CIV RCS Discharge Open Position RXB - Top of Module Harsh Electrical Yes No A 2.8-5 Sensor CVCS Inboard RCS Injection CIV Close Position RXB - Top of Module Harsh Electrical Yes No A Sensor CVCS Inboard RCS Injection CIV Open Position RXB - Top of Module Harsh Electrical Yes No A Sensor CVCS Outboard RCS Injection CIV Close Position RXB - Top of Module Harsh Electrical Yes No A Sensor CVCS Outboard RCS Injection CIV Open Position RXB - Top of Module Harsh Electrical Yes No A Sensor CVCS Inboard PZR Spray Line CIV Close Position RXB - Top of Module Harsh Electrical Yes No A Sensor CVCS Inboard PZR Spray Line CIV Open Position RXB - Top of Module Harsh Electrical Yes No A Equipment Qualification Sensor CVCS Outboard PZR Spray Line CIV Close Position RXB - Top of Module Harsh Electrical Yes No A Sensor CVCS Outboard PZR Spray Line CIV Open Position RXB - Top of Module Harsh Electrical Yes No A Revision 4 Sensor CVCS Inboard RPV High- Point Degasification CIV RXB - Top of Module Harsh Electrical Yes No A Close Position Sensor

Table 2.8-1: Module Specific Mechanical and Electrical/I&C Equipment (Continued)

Tier 1 NuScale Tier 1 Description Location EQ Qualification Seismic Class 1E EQ Environment Program Category I Category(1)

CVCS Inboard RPV High- Point Degasification CIV RXB - Top of Module Harsh Electrical Yes No A Open Position Sensor CVCS Outboard RPV High-Point Degasification CIV RXB - Top of Module Harsh Electrical Yes No A Close Position Sensor CVCS Outboard RPV High-Point Degasification CIV RXB - Top of Module Harsh Electrical Yes No A Open Position Sensor RCCW Supply Inboard CIV Close Position Sensor RXB - Top of Module Harsh Electrical Yes No A RCCW Supply Inboard CIV Open Position Sensor RXB - Top of Module Harsh Electrical Yes No A RCCW Supply Outboard CIV Close Position Sensor RXB - Top of Module Harsh Electrical Yes No A RCCW Supply Outboard CIV Open Position Sensor RXB - Top of Module Harsh Electrical Yes No A RCCW Return Inboard CIV Close Position Sensor RXB - Top of Module Harsh Electrical Yes No A RCCW Return Inboard CIV Open Position Sensor RXB - Top of Module Harsh Electrical Yes No A RCCW Return Outboard CIV Close Position Sensor RXB - Top of Module Harsh Electrical Yes No A RCCW Return Outboard CIV Open Position Sensor RXB - Top of Module Harsh Electrical Yes No A FW Supply to SG1 and DHR HX1 CIV/FWIV Open RXB - Top of Module Harsh Electrical Yes No A 2.8-6 Position Sensors (2 Total)

FW Supply to SG1 and DHR HX1 CIV/FWIV Close RXB - Top of Module Harsh Electrical Yes No A Position Sensors (2 Total)

FW Supply to SG2 and DHR HX2 CIV/FWIV Close RXB - Top of Module Harsh Electrical Yes No A Position Sensors (2 Total)

FW Supply to SG2 and DHR HX2 CIV/FWIV Open RXB - Top of Module Harsh Electrical Yes No A Position Sensors (2 Total)

SG1 Steam Supply CIV/ MSIV Close Position RXB - Top of Module Harsh Electrical Yes No A Sensors (2 Total)

SG1 Steam Supply CIV/ MSIV Open Position RXB - Top of Module Harsh Electrical Yes No A Sensors (2 Total)

SG1 Steam Supply CIV/ MS Bypass Isolation Valve RXB - Top of Module Harsh Electrical Yes No A Equipment Qualification Close Position Sensors (2 Total)

SG1 Steam Supply CIV/ MS Bypass Isolation Valve RXB - Top of Module Harsh Electrical Yes No A Open Position Sensors (2 Total)

SG2 Steam Supply CIV/ MSIV Close Position RXB - Top of Module Harsh Electrical Yes No A Revision 4 Sensors (2 Total)

SG2 Steam Supply CIV/ MSIV Open Position RXB - Top of Module Harsh Electrical Yes No A Sensors (2 Total)

Table 2.8-1: Module Specific Mechanical and Electrical/I&C Equipment (Continued)

Tier 1 NuScale Tier 1 Description Location EQ Qualification Seismic Class 1E EQ Environment Program Category I Category(1)

SG2 Steam Supply CIV/ MS Bypass Isolation Valve RXB - Top of Module Harsh Electrical Yes No A Close Position Sensors (2 Total)

SG2 Steam Supply CIV/ MS Bypass Isolation Valve RXB - Top of Module Harsh Electrical Yes No A Open Position Sensors (2 Total)

Steam Generator System SG Tubes and Tube Supports RXB - Inside Containment N/A N/A Yes N/A N/A Steam Plenums (4 Total) RXB - Inside Containment N/A N/A Yes N/A N/A Feedwater Plenums (4 Total) RXB - Inside Containment N/A N/A Yes N/A N/A Flow Restrictors RXB - Inside Containment N/A N/A Yes N/A N/A Thermal Relief Valves (2 Total) RXB - Inside Containment Harsh Mechanical Yes N/A B Control Rod Drive System Rod Position Indication (RPI) Coils (32 Total) RXB - Inside Containment Harsh Electrical Yes No B Control Rod Drive Shafts RXB - Inside Containment N/A N/A Yes N/A N/A Control Rod Drive Latch Mechanism RXB - Inside Containment N/A N/A Yes N/A N/A 2.8-7 CRDM Pressure Boundary (Latch Housing, Rod RXB - Inside Containment N/A N/A Yes N/A N/A Travel Housing, Rod Travel Housing Plug)

Control Rod Assembly All components RXB - Inside Containment N/A N/A Yes N/A N/A Neutron Source Assembly Primary and secondary neutron source rodlets RXB - Inside Containment N/A N/A Yes N/A N/A Spider body, hub or coupling housing RXB - Inside Containment N/A N/A Yes N/A N/A Reactor Coolant System Reactor Vessel Internals RXB - Inside Containment N/A N/A Yes N/A N/A Reactor Safety Valve Position Indicators (4 Total) RXB - Inside Containment Harsh Electrical Yes No B Reactor Safety Valves (2 Total) RXB - Inside Containment Harsh Electrical Yes N/A A Mechanical Equipment Qualification Narrow Range Pressurizer Pressure Elements (4 RXB - Inside Containment Harsh Electrical Yes Yes A Total)

Wide Range RCS Pressure Elements (4 Total) RXB - Inside Containment Harsh Electrical Yes Yes A PZR/RPV Level Elements (4 Total) RXB - Top of Module Harsh Electrical Yes Yes A Revision 4 RXB - Inside Containment Narrow Range RCS Hot Leg Temperature RXB - Inside Containment Harsh Electrical Yes Yes A Elements (12 Total)

Table 2.8-1: Module Specific Mechanical and Electrical/I&C Equipment (Continued)

Tier 1 NuScale Tier 1 Description Location EQ Qualification Seismic Class 1E EQ Environment Program Category I Category(1)

Wide Range RCS Hot Leg Temperature Elements RXB - Inside Containment Harsh Electrical Yes Yes A (4 Total)

Wide Range RCS Cold Leg Temperature Elements RXB - Inside Containment Harsh Electrical Yes Yes B (4 Total)

RCS Flow Transmitters (4 Total) RXB - Inside Containment Harsh Electrical Yes Yes A PZR Heaters (2 Total) RXB - Inside Containment N/A N/A Yes No N/A Chemical and Volume Control System DWS Supply Isolation Valves (2 Total) RXB - 50 Harsh Electrical Yes Yes AB Mechanical Emergency Core Cooling System Reactor Vent Valves (3 Total) RXB - Inside Containment Harsh Mechanical Yes No A RVV Position Indications (8 Total) RXB - Inside Containment Harsh Electrical Yes No A Reactor Recirculation Valves (2 Total) RXB - Inside Containment Harsh Mechanical Yes No A RRV Position Indications (4 Total) RXB - Inside Containment Harsh Electrical Yes No A RVV Trip Valves (4 Total) RXB - Pool Harsh Electrical Yes Yes AB 2.8-8 Mechanical RRV Trip Valves (2 Total) RXB - Pool Harsh Electrical Yes Yes AB Mechanical RVV Trip Valve Position Indications (8 Total) RXB - Pool Harsh Electrical Yes No A RRV Trip Valve Position Indications (4 Total) RXB - Pool Harsh Electrical Yes No A RVV Reset Valves (3 Total) RXB - Pool Harsh Electrical Yes No A Mechanical RRV Reset Valves (2 Total) RXB - Pool Harsh Electrical Yes No A Mechanical Decay Heat Removal System DHRS Actuation Valves (4 Total) RXB - Top of Module Harsh Electrical Yes Yes A Mechanical Equipment Qualification DHRS Condenser Outlet Temperature RXB - Pool Harsh Electrical Yes No A Transmitters (4 Total)

DHRS Condenser Outlet Pressure Transmitters (6 RXB - Pool Harsh Electrical Yes No A Total)

Revision 4 DHRS Valve Position Indicators (8 Total) RXB - Top of Module Harsh Electrical Yes No A Condensers (2 Total) RXB - Side of Module N/A N/A Yes N/A N/A SG Steam Pressure Transmitters (8 Total) RXB - Top of Module Harsh Electrical Yes Yes A

Table 2.8-1: Module Specific Mechanical and Electrical/I&C Equipment (Continued)

Tier 1 NuScale Tier 1 Description Location EQ Qualification Seismic Class 1E EQ Environment Program Category I Category(1)

Main Steam System Secondary Main Steam Isolation Valves (2 Total) RXB - 100' Harsh Electrical Yes No AB Mechanical Secondary Main Steam Isolation Bypass Valves (2 RXB - 100' Harsh Electrical Yes No AB Total) Mechanical Condensate and Feedwater System Feedwater Regulating Valves A/B (2 Total) RXB - 100 Harsh Electrical Yes No A Mechanical Feedwater Supply Check Valves (2 Total) RXB - 100 Harsh Mechanical Yes N/A A Module Protection System Safety-Related MPS Modules RXB - 75' Mild Electrical Yes Yes E Safety Function Modules RXB - 86' Hard-wired Modules Scheduling and Bypass Modules 2.8-9 Equipment Interface Modules Scheduling and Voting Modules Power Isolation, Conversion and Monitoring RXB - 75' Mild Electrical Yes Yes E Devices RXB - 86' ELVS Voltage Sensors RXB - 75' Mild Electrical Yes Yes E RXB - 86' Under-the-Bioshield Temperature Sensors RXB - Top of the Module Harsh Electrical Yes Yes A PZR Heater Trip Breakers (4 Total) RXB - 75' Mild Electrical Yes Yes E RXB - 86' Reactor Trip Breakers (4 Total) RXB - 75' Mild Electrical Yes Yes E RXB - 86' Equipment Qualification Safety Function Module Trip/Bypass Switches (60 RXB - 75' Mild Electrical Yes Yes E Total) RXB - 86' Enable Nonsafety Control Switches (2 Total) CRB - 76.5' Mild Electrical Yes Yes E MCR Isolation Switches (2 Total) RXB - 75' Harsh Electrical Yes Yes B Revision 4 Manual PZR Heater Breaker Trip Switches (2 Total) CRB - 76.5' Mild Electrical Yes Yes E Manual LTOP Actuation Switches (2 Total) CRB - 76.5' Mild Electrical Yes Yes E Manual ECCS Actuation Switches (2 Total) CRB - 76.5' Mild Electrical Yes Yes E

Table 2.8-1: Module Specific Mechanical and Electrical/I&C Equipment (Continued)

Tier 1 NuScale Tier 1 Description Location EQ Qualification Seismic Class 1E EQ Environment Program Category I Category(1)

Manual DWSI Actuation Switches (2 Total) CRB - 76.5' Mild Electrical Yes Yes E Manual DHRS Actuation Switches (2 Total) CRB - 76.5' Mild Electrical Yes Yes E Manual CVCSI Actuation Switches (2 Total) CRB - 76.5' Mild Electrical Yes Yes E Manual CSI Actuation Switches (2 Total) CRB - 76.5' Mild Electrical Yes Yes E Manual Reactor Trip Switches (2 Total) CRB - 76.5' Mild Electrical Yes Yes E Override Switches (2 Total) CRB - 76.5' Mild Electrical Yes Yes E Operating Bypass Switches (2 Total) CRB - 76.5' Mild Electrical Yes Yes E Neutron Monitoring System Excore Neutron Detectors RXB - Pool Harsh Electrical Yes Yes A Excore Signal Conditioning and Processing RXB - 75' Mild Electrical Yes Yes E Equipment RXB - 86' Excore Power Isolation, Conversion and RXB - 75' Mild Electrical Yes Yes E Monitoring Devices RXB - 86' In-Core Instrumentation System 2.8-10 In-core instrument string / temperature and flux RXB - Inside Containment Harsh Electrical Yes No A sensors In-core instrument string sheath RXB - Inside Containment Harsh Mechanical Yes N/A B Notes:

1. EQ Categories:
  • A Equipment that will experience the environmental conditions of design basis accidents for which it must function to mitigate said accidents, and that will be qualified to demonstrate operability in the accident environment for the time required for accident mitigation with safety margin to failure.
  • B Equipment that will experience the environmental conditions of design basis accidents through which it need not function for mitigation of said accidents, but through which it must not fail in a manner detrimental to plant safety or accident mitigation, and that will be qualified to demonstrate the capability to withstand the accident environment for the time during which it must not fail with safety margin to failure.
  • E Equipment that will not experience environmental conditions of design basis accidents and that will be qualified to demonstrate operability under the expected extremes of its nonaccident service environment.

Equipment Qualification Revision 4

NuScale Tier 1 Equipment Qualification Table 2.8-2: Equipment Qualification Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The module-specific Seismic Category i. A type test, analysis, or a i. A Seismic Qualification Report I equipment listed in Table 2.8-1, combination of type test and exists and concludes that the including its associated supports and analysis will be performed of the module-specific Seismic Category I anchorages, withstands design basis module-specific Seismic Category I equipment listed in Table 2.8-1, seismic loads without loss of its equipment listed in Table 2.8-1, including its associated supports function(s) during and after an SSE. including its associated supports and anchorages, will withstand the and anchorages. design basis seismic loads and ii. An inspection will be performed of perform its function(s) during and the module-specific Seismic after an SSE.

Category I as-built equipment ii. The module-specific Seismic listed in Table 2.8-1, including its Category I equipment listed in associated supports and Table 2.8-1, including its anchorages. associated supports and anchorages, is installed in its design location in a Seismic Category I structure in a configuration bounded by the equipments Seismic Qualification Report.

2. The module-specific electrical i. A type test or a combination of i. An EQ record form exists and equipment located in a harsh type test and analysis will be concludes that the module-environment listed in Table 2.8-1, performed of the module-specific specific electrical equipment listed including associated connection electrical equipment listed in in Table 2.8-1, including associated assemblies, withstand the design basis Table 2.8-1, including associated connection assemblies, perform harsh environmental conditions connection assemblies. their function under the experienced during normal ii. An inspection will be performed of environmental conditions operations, AOOs, DBAs, and post- the module-specific as-built specified in the EQ record form for accident conditions and performs its electrical equipment listed in the period of time required to function for the period of time Table 2.8-1, including associated complete the function.

required to complete the function. connection assemblies. ii. The module-specific electrical equipment listed in Table 2.8-1, including associated connection assemblies, are installed in their design location in a configuration bounded by the EQ record form.

3. The non-metallic parts, materials, and A type test or a combination of type A qualification record form exists and lubricants used in module-specific test and analysis will be performed of concludes that the non-metallic parts, mechanical equipment listed in the non-metallic parts, materials, and materials, and lubricants used in Table 2.8-1 perform their function up lubricants used in module-specific module-specific mechanical to the end of their qualified life in the mechanical equipment listed in equipment listed in Table 2.8-1 design basis harsh environmental Table 2.8-1. perform their function up to the end of conditions (both internal service their qualified life under the design conditions and external basis harsh environmental conditions environmental conditions) (both internal service conditions and experienced during normal external environmental conditions) operations, AOOs, DBAs, and specified in the qualification record post-accident conditions. form.

Tier 1 2.8-11 Revision 4

NuScale Tier 1 Equipment Qualification Table 2.8-2: Equipment Qualification Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

4. The Class 1E computer-based i. A type test or a combination of i. An EQ record form exists and instrumentation and control systems type test and analysis will be concludes that the Class 1E listed in Table 2.8-1 located in a mild performed of the Class 1E computer-based instrumentation environment withstand design basis computer-based instrumentation and control systems listed in mild environmental conditions and control systems listed in Table 2.8-1 located in a mild without loss of safety-related Table 2.8-1 located in a mild environment perform their functions. environment. function under the environmental ii. An inspection will be performed of conditions specified in the EQ the Class 1E as-built computer- record form.

based instrumentation and control ii. The Class 1E computer-based systems listed in Table 2.8-1 instrumentation and control located in a mild environment. systems listed in Table 2.8-1 located in a mild environment are installed in their design location in a configuration bounded by the EQ record form.

5. The Class 1E digital equipment listed A type test, analysis, or a combination An EQ record form exists and in Table 2.8-1 performs its safety- of type test and analysis will be concludes that the Class 1E digital related function when subjected to performed of the Class 1E digital equipment listed in Table 2.8-1 the design basis electromagnetic equipment listed in Table 2.8-1. withstands the design basis interference, radio frequency electromagnetic interference, radio interference, and electrical surges that frequency interference, and electrical would exist before, during, and surges that would exist before, during, following a DBA. and following a DBA without loss of safety-related function.
6. The valves listed in Table 2.8-1 are A type test or a combination of type A Qualification Report exists and functionally designed and qualified to test and analysis will be performed of concludes that the valves listed in perform their safety-related function the valves listed in Table 2.8-1. Table 2.8-1 are capable of performing under the full range of fluid flow, their safety-related function under the differential pressure, electrical, full range of fluid flow, differential temperature, and fluid conditions up pressure, electrical, temperature, and to and including DBA conditions. fluid conditions up to and including DBA conditions.
7. The safety-related relief valves listed in i. A vendor test will be performed of i. An American Society of Table 2.8-1 provide overpressure each safety-related relief valve Mechanical Engineers Code protection. listed in Table 2.8-1. Section III Data Report exists and ii. An inspection will be performed of concludes that the relief valves each safety-related as-built relief listed in Table 2.8-1 meet the valve listed in Table 2.8-1. valves required set pressure, capacity, and overpressure design requirements.

ii. Each relief valve listed in Table 2.8-1 is provided with an American Society of Mechanical Engineers Code Certification Mark that identifies the set pressure, capacity, and overpressure.

Tier 1 2.8-12 Revision 4

NuScale Tier 1 Equipment Qualification Table 2.8-2: Equipment Qualification Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

8. The DHRS condensers listed in A type test or a combination of type A report exists and concludes that the Table 2.8-1 have the capacity to test and analysis will be performed of DHRS condensers listed in Table 2.8-1 transfer their design heat load. the DHRS condensers listed in have a heat removal capacity sufficient Table 2.8-1. to transfer their design heat load.
9. The CNTS containment electrical i. A type test or a combination of i. An EQ record form exists and penetration assemblies listed in type test and analysis will be concludes that the CNTS electrical Table 2.8-1, including associated performed of the CNTS penetration assemblies listed in connection assemblies, withstand the containment electrical penetration Table 2.8-1, including associated design basis harsh environmental assemblies listed in Table 2.8-1 connection assemblies, performs conditions experienced during normal including associated connection their function under the operations, AOOs, DBAs, and assemblies. environmental conditions postaccident conditions and performs ii. An inspection will be performed of specified in the EQ record form for its function for the period of time the containment CNTS electrical the period of time required to required to complete the function. penetration assembles listed in complete the function.

Table 2.8-1, including associated ii. The CNTS electrical penetration connection assemblies. assemblies listed in Table 2.8-1, including associated connection assemblies, are installed in their design location in a configuration bounded by the EQ record form.

Tier 1 2.8-13 Revision 4

NuScale Tier 1 Fuel Assembly Design 2.9 Fuel Assembly Design 2.9.1 Fuel Assembly Design

System Description

The fuel assembly is designed to ensure that possible fuel damage will not result in the release of radioactive materials during normal operations, anticipated operational occurrences, and postulated accidents, in excess of prescribed limits. The fuel assembly is comprised of fuel rods, spacer grids, guide tubes, top and bottom nozzles, and plenum springs. The fuel assembly design is approved by the NRC for the NuScale reactor design.

2.9.2 Inspections, Tests, Analyses and Acceptance Criteria None Tier 1 2.9-1 Revision 4

Shared Structures, Systems, and Components and Non-Structures, Systems, and NuScale Tier 1 Components Design Descriptions and Inspections, Tests, Analyses, and Acceptance Criteria CHAPTER 3 SHARED STRUCTURES, SYSTEMS, AND COMPONENTS AND NON-STRUCTURES, SYSTEMS, AND COMPONENTS DESIGN DESCRIPTIONS AND INSPECTIONS, TESTS, ANALYSES, AND ACCEPTANCE CRITERIA 3.0 Shared Structures, Systems, and Components and Non-Structures, Systems, and Components Design Descriptions and Inspections, Tests, Analyses, and Acceptance Criteria This chapter of Tier 1 provides the structures, systems, and components (SSC) Design Descriptions and Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC) for those SSC that are common or shared by multiple NuScale Power Modules (NPMs). Shared systems in this chapter of Tier 1 are either shared by 1-12 NPMs or by 1- 6 NPMs as shown in Table 3.0-1. This chapter also includes non-SSC based Design Descriptions and ITAAC that are common or shared by multiple NPMs. For a multi-module plant, satisfactory completion of a shared ITAAC for the lead module shall constitute satisfactory completion of the shared ITAAC for associated modules. The ITAAC in Sections 3.1 through 3.17 shall only be completed once in conjunction with the ITAAC in Chapter 2 for the first NPM. The ITAAC in Section 3.18 shall only be completed once in conjunction with the ITAAC in Chapter 2 for NPM 7 or NPM 12, whichever is completed first.

Tier 1 3.0-1 Revision 4

Shared Structures, Systems, and Components and Non-Structures, Systems, and NuScale Tier 1 Components Design Descriptions and Inspections, Tests, Analyses, and Acceptance Criteria Table 3.0-1: Shared Systems Subject to Inspections, Tests, Analyses, and Acceptance Criteria Shared System NPMs Supported Balance-of-plant drain system 1 system per 6 modules Containment flooding and drain system 1 system per 6 modules Normal control room heating ventilation and air conditioning system 1 system per 12 modules Control room habitability system 1 system per 12 modules Reactor Building heating ventilation and air conditioning system 1 system per 12 modules Fuel handling equipment system 1 system per 12 modules Fuel storage system 1 system per 12 modules Ultimate heat sink 1 system per 12 modules Fire protection system 1 system per 12 modules Plant lighting system 1 system per 12 modules Gaseous radioactive waste system 1 system per 12 modules Liquid radioactive waste system 1 system per 12 modules Auxiliary boiler system 1 system per 12 modules Pool surge control system 1 system per 12 modules Reactor Building crane system 1 system per 12 modules Reactor Building and Reactor Building components 1 system per 12 modules Radioactive Waste Building 1 system per 12 modules Control Building 1 system per 12 modules Physical security system 1 system per 12 modules Tier 1 3.0-2 Revision 4

NuScale Tier 1 Control Room Habitability 3.1 Control Room Habitability 3.1.1 Design Description

System Description

The scope of this section is the control room habitability system (CRHS). The CRHS provides clean breathing air to the control room envelope and maintains a positive control room pressure during high radiation or loss of offsite power conditions for habitability and control of radioactivity. The CRHS is a nonsafety-related system which supports up to 12 NuScale Power Modules (NPMs). The Control Building houses all CRHS equipment.

The CRHS performs the following nonsafety-related system function that is verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The CRHS supports the Control Building by providing clean breathing air to the main control room (MCR) and maintains a positive control room pressure during high radiation or loss of normal AC power conditions.

Design Commitments

  • The air exfiltration out of the control room envelope (CRE) is less than or equal to the assumptions used to size the CRHS inventory and the supply flow rate.
  • The CRHS valves listed in Table 3.1-1 change position under design basis temperature, differential pressure, and flow conditions.
  • The CRHS solenoid-operated valves listed in Table 3.1-1 perform their function to fail open on loss of motive power under design basis temperature, differential pressure, and flow conditions.
  • The CRE heat sink passively maintains the temperature of the CRE within an acceptable range for the first 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> following a design basis accident (DBA).
  • The CRHS maintains a positive pressure in the MCR relative to the adjacent areas.

3.1.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.1-2 contains the inspections, tests, and analyses for the CRHS.

Tier 1 3.1-1 Revision 4

NuScale Tier 1 Control Room Habitability Table 3.1-1: Control Room Habitability System Mechanical Equipment Equipment Name Failure Position Air supply isolation solenoid valves (2 Total) Open CRE pressure relief isolation valves (2 Total) Open Tier 1 3.1-2 Revision 4

NuScale Tier 1 Control Room Habitability Table 3.1-2: Control Room Habitability System Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The air exfiltration out of the CRE is less A test will be performed of the CRE. The air exfiltration measured by tracer than or equal to the assumptions used gas testing is less than or equal to the to size the CRHS inventory and the CRE air infiltration rate assumed in the supply flow rate. dose analysis.
2. The CRHS valves listed in Table 3.1-1 A test will be performed of the CRHS Each CRHS valve listed in Table 3.1-1 change position under design basis valves listed in Table 3.1-1 under strokes fully open and fully closed by temperature, differential pressure, and preoperational temperature, remote operation under flow conditions. differential pressure, and flow preoperational temperature, conditions. differential pressure, and flow conditions.
3. The CRHS solenoid-operated valves A test will be performed of the CRHS Each CRHS solenoid-operated valve listed in Table 3.1-1 perform their solenoid-operated valves listed in listed in Table 3.1-1 performs its function to fail open on loss of motive Table 3.1-1 under preoperational function to fail open on loss of motive power under design basis temperature, differential pressure and power under preoperational temperature, differential pressure, and flow conditions. temperature, differential pressure, and flow conditions. flow conditions.
4. The CRE heat sink passively maintains An analysis will be performed of the A report exists and concludes that the the temperature of the CRE within an as-built CRE heat sinks. CRE heat sink passively maintains the acceptable range for the first 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> temperature of the CRE within an following a DBA. acceptable range for the first 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> following a DBA.
5. The CRHS maintains a positive A test will be performed of the CRHS. The CRHS maintains a positive pressure in the MCR relative to pressure of greater than or equal to adjacent areas. 1/8 inches water gauge in the CRE relative to adjacent areas, while operating in DBA alignment.

Tier 1 3.1-3 Revision 4

NuScale Tier 1 Normal Control Room Heating Ventilation and Air Conditioning System 3.2 Normal Control Room Heating Ventilation and Air Conditioning System 3.2.1 Design Description

System Description

The scope of this section is the normal control room HVAC system (CRVS). The CRVS serves the entire Control Building (CRB) and the access tunnel between the CRB and the Reactor Building (RXB). The CRVS is a nonsafety-related system. The CRVS supports up to 12 NuScale Power Modules. The CRB houses all CRVS equipment.

The CRVS performs the following nonsafety-related system functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The CRVS supports the CRB by maintaining the CRB at a positive pressure relative to the RXB and the outside atmosphere to control the ingress of potentially airborne radioactivity from the RXB or the outside atmosphere to the CRB.
  • The CRVS supports the highly reliable DC power system by providing ventilation to maintain airborne hydrogen concentrations below the allowable limits.
  • The CRVS supports the normal DC power system by providing ventilation to maintain airborne hydrogen concentrations below allowable limits.

Design Commitments

  • The CRVS air-operated CRE isolation dampers listed in Table 3.2-1 perform their function to fail to the closed position on loss of motive power under design basis temperature, differential pressure, and flow conditions.
  • The CRVS maintains a positive pressure in the CRB relative to the outside environment.
  • The CRVS maintains the hydrogen concentration levels in the CRB battery rooms containing batteries below one percent by volume.

3.2.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.2-2 contains the inspections, tests, and analyses for the CRVS.

Tier 1 3.2-1 Revision 4

NuScale Tier 1 Normal Control Room Heating Ventilation and Air Conditioning System Table 3.2-1: Normal Control Room Heating Ventilation and Air Conditioning System Mechanical Equipment Equipment Name Actuator Type CRE isolation dampers (8 Total) Pneumatic Tier 1 3.2-2 Revision 4

NuScale Tier 1 Normal Control Room Heating Ventilation and Air Conditioning System Table 3.2-2: Normal Control Room Heating Ventilation and Air Conditioning Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The CRVS air-operated CRE isolation A test will be performed of the air- Each CRVS air-operated CRE isolation dampers listed in Table 3.2-1 perform operated CRE isolation dampers listed damper listed in Table 3.2-1 performs their function to fail to the closed in Table 3.2-1 under preoperational its function to fail to the closed position on loss of motive power temperature, differential pressure and position on loss of motive power under design basis temperature, flow conditions. under preoperational temperature, differential pressure, and flow differential pressure, and flow conditions. conditions.
2. The CRVS maintains a positive A test will be performed of the CRVS The CRVS maintains a positive pressure in the CRB relative to the while operating in the normal pressure of greater than or equal to outside environment. operating alignment. 1/8 inches water gauge in the CRB relative to the outside environment, while operating in the normal operating alignment.
3. The CRVS maintains the hydrogen A test will be performed of the CRVS The airflow capability of the CRVS concentration levels in the CRB battery while operating in the normal maintains the hydrogen concentration rooms containing batteries below one operating alignment. levels in the CRB battery rooms percent by volume. containing batteries below one percent by volume.

Tier 1 3.2-3 Revision 4

NuScale Tier 1 Reactor Building Heating Ventilation and Air Conditioning System 3.3 Reactor Building Heating Ventilation and Air Conditioning System 3.3.1 Design Description

System Description

The scope of this section is the Reactor Building HVAC system (RBVS). The RBVS is designed to remove radioactive contaminants from the exhaust streams of the Reactor Building (RXB) general area, the Radioactive Waste Building (RWB) general area, and the Annex Building. The RBVS is a nonsafety-related system. The RBVS supports up to 12 NuScale Power Modules. The RXB and the RWB house the RBVS equipment.

The RBVS performs the following nonsafety-related system functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The RBVS supports the RXB by maintaining the RXB at a negative pressure relative to the outside atmosphere to control the movement of potentially airborne radioactivity from the RXB to the environment.
  • The RBVS supports the RWB by maintaining the RWB at a negative ambient pressure relative to the outside atmosphere to control the movement of potentially airborne radioactivity from the RWB to the environment.
  • The RBVS supports the highly reliable DC power system by providing ventilation to maintain airborne hydrogen concentrations below allowable limits.
  • The RBVS supports the normal DC power system by providing ventilation to maintain airborne hydrogen concentrations below allowable limits.

Design Commitments

  • The RBVS maintains a negative pressure in the RXB relative to the outside environment.
  • The RBVS maintains a negative pressure in the RWB relative to the outside environment.
  • The RBVS maintains the hydrogen concentration levels in the RXB battery rooms containing batteries below one percent by volume.

3.3.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.3-1 contains the inspections, tests, and analyses for the RBVS.

Tier 1 3.3-1 Revision 4

NuScale Tier 1 Reactor Building Heating Ventilation and Air Conditioning System Table 3.3-1: Reactor Building Heating Ventilation and Air Conditioning System Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The RBVS maintains a negative A test will be performed of the RBVS The RBVS maintains a negative pressure in the RXB relative to the while operating in the normal pressure in the RXB relative to the outside environment. operating alignment. outside environment, while operating in the normal operating alignment.
2. The RBVS maintains a negative A test will be performed of the RBVS The RBVS maintains a negative pressure in the RWB relative to the while operating in the normal pressure in the RWB relative to the outside environment. operating alignment. outside environment, while operating in the normal operating alignment.
3. The RBVS maintains the hydrogen A test will be performed of the RBVS The airflow capability of the RBVS concentration levels in the RXB battery while operating in the normal maintains the hydrogen concentration rooms containing batteries below one operating alignment. levels in the RXB battery rooms percent by volume. containing batteries below one percent by volume.

Tier 1 3.3-2 Revision 4

NuScale Tier 1 Fuel Handling Equipment System 3.4 Fuel Handling Equipment System 3.4.1 Design Description

System Description

The scope of this section is the fuel handling equipment (FHE) system. The FHE system is designed to support the periodic refueling of the reactor as well as movement of control rods and other radioactive components within the reactor core, refueling pool, and spent fuel pool. The FHE system is a nonsafety-related system. The FHE system supports up to 12 NuScale Power Modules (NPMs). The Reactor Building houses all FHE system equipment.

The FHE system performs the following nonsafety-related system function that is verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The FHE system supports the reactor fuel assembly by providing structural support during handling of fuel.

Design Commitments

  • The fuel handling machine (FHM) main and auxiliary hoists are single-failure-proof in accordance with the approved design.
  • The FHM main hoist is capable of lifting and supporting its rated load, holding the rated load, and transporting the rated load.
  • The FHM auxiliary hoist is capable of lifting and supporting its rated load, holding the rated load, and transporting the rated load.
  • The FHM welds comply with the American Society of Mechanical Engineers NOG-1 Code.
  • The FHM travel is limited to maintain a water inventory for personnel shielding with the pool level at the lower limit of the normal operating low water level.
  • The new fuel jib crane hook movement is limited to prevent carrying a fuel assembly over the fuel storage racks in the spent fuel pool.

3.4.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.4-1 contains the inspections, tests, and analyses for the FHE system.

Tier 1 3.4-1 Revision 4

NuScale Tier 1 Fuel Handling Equipment System Table 3.4-1: Fuel Handling Equipment System Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The FHM main and auxiliary hoists are An inspection will be performed of the A report exists and concludes that the single-failure-proof in accordance with as-built FHM main and auxiliary hoists. FHM main and auxiliary hoists are the approved design. single-failure-proof in accordance with the approved design.
2. The FHM main hoist is capable of A rated load test will be performed of The FHM main hoist lifts, supports, lifting and supporting its rated load, the FHM main hoist. holds with the brakes, and transports a holding the rated load, and load of at least 125 percent of the transporting the rated load. manufacturers rated capacity.
3. The FHM auxiliary hoist is capable of A rated load test will be performed of The FHM auxiliary hoist lifts, supports, lifting and supporting its rated load, the FHM auxiliary hoist. holds with the brakes, and transports a holding the rated load, and load of at least 125 percent of the transporting the rated load. manufacturers rated capacity.
4. The FHM welds comply with the An inspection will be performed of the The results of the non-destructive American Society of Mechanical as-built FHM welds. examination of the FHM welds comply Engineers NOG-1 Code. with American Society of Mechanical Engineers NOG-1 Code.
5. The FHM travel is limited to maintain a A test will be performed of the FHM The FHM maintains at least 10 feet of water inventory for personnel gripper mast limit switches. water above the top of the fuel shielding with the pool level at the assembly when lifted to its maximum lower limit of the normal operating height with the pool level at the lower low water level. limit of the normal operating low water level.
6. The new fuel jib crane hook A test will be performed of new fuel jib The new fuel jib crane interlocks movement is limited to prevent crane interlocks. prevent the crane from carrying a fuel carrying a fuel assembly over the fuel assembly over the spent fuel racks.

storage racks in the spent fuel pool.

Tier 1 3.4-2 Revision 4

NuScale Tier 1 Fuel Storage System 3.5 Fuel Storage System 3.5.1 Design Description

System Description

The scope of this section is the fuel storage system. The fuel storage system consists of the fuel storage racks in the spent fuel pool (SFP) that can store either spent fuel assemblies or new fuel assemblies. The fuel storage system is a nonsafety-related system. The fuel storage system supports up to 12 NuScale Power Modules (NPMs). The Reactor Building houses all fuel storage system equipment.

The fuel storage system performs the following nonsafety-related system functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The fuel storage system supports the reactor fuel assembly system by providing mechanical support for storage of new and spent fuel in a wet storage location.
  • The fuel storage system supports the reactor fuel assembly system by providing neutron absorption to ensure subcriticality during storage of new and spent fuel.
  • The fuel storage system supports the control rod assembly system by providing mechanical support for storage of control rods in fuel assemblies.

Design Commitments

  • The fuel storage system American Society of Mechanical Engineers (ASME) Code Class NF components conform to the rules of construction of ASME Code Section III.
  • The fuel storage racks maintain an effective neutron multiplication factor (k-effective) within the following limits at a 95 percent probability, 95 percent confidence level when loaded with fuel of the maximum reactivity to assure subcriticality during plant life, including normal operations and postulated accident conditions:

k-effective must not exceed 0.95 if flooded with borated water k-effective must not exceed 1.0 if flooded with unborated water 3.5.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.5-1 contains the inspections, tests, and analyses for the fuel storage system.

Tier 1 3.5-1 Revision 4

NuScale Tier 1 Fuel Storage System Table 3.5-1: Fuel Storage System Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The fuel storage system ASME Code An inspection will be performed of the ASME Code Section III Data Reports for Class NF components conform to the fuel storage system ASME Code Class the fuel storage system ASME Code rules of construction of ASME Code NF as-built component Data Reports Class NF fuel storage racks exist and Section III. required by ASME Code Section III. conclude that the requirements of ASME Code Section III are met.
2. The fuel storage racks maintain an An inspection will be performed of the The as-built fuel storage racks, effective neutron multiplication factor as-built fuel storage racks, their including any neutron absorbers, and (k-effective) within the following limits configuration in the SFP, and the their configuration within the SFP at a 95 percent probability, 95 percent associated documentation. conform to the design values for confidence level when loaded with materials and dimensions and their fuel of the maximum reactivity to tolerances, as shown to be acceptable assure subcriticality during plant life, in the fuel storage criticality analysis including normal operations and described in the UFSAR.

postulated accident conditions:

  • k-effective must not exceed 0.95 if flooded with borated water
  • k-effective must not exceed 1.0 if flooded with unborated water Tier 1 3.5-2 Revision 4

NuScale Tier 1 Ultimate Heat Sink 3.6 Ultimate Heat Sink 3.6.1 Design Description

System Description

The scope of this section is the ultimate heat sink (UHS). The UHS is the system of structures and components credited for functioning as a heat sink for decay heat removal from the NuScale Power Modules during normal reactor operations or shutdown following an accident or transient, including a loss-of-coolant accident. The UHS is a safety-related system and supports up to 12 NuScale Power Modules. The Reactor Building (RXB) houses all UHS equipment.

The configuration of the UHS includes the combined volume of water in the reactor pool, refueling pool (RFP), and spent fuel pool (SFP). The pool areas are open to each other with a weir wall partially separating the SFP from the RFP. The dry dock area is not considered part of the UHS volume.

The structural components of the reactor pool, RFP, and SFP (i.e., structural walls, weir wall, and floor) and associated pool liners are a component of the RXB structure. The design commitments for the Reactor Building are provided in Tier 1 Section 3.11.

The UHS performs the following safety-related system functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The UHS supports the containment system by providing the removal of heat via direct water contact with the containment vessel.
  • The UHS supports the spent fuel system by providing the removal of decay heat from the spent fuel via direct water contact with the spent fuel assemblies.

The UHS performs the following nonsafety-related system functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The UHS supports the containment system by providing the radiation shielding for the NPMs via the water surrounding the components.
  • The UHS supports the spent fuel system by providing radiation shielding for spent fuel via the water surrounding the components.
  • The UHS supports the RXB by having an assured water make-up line that can provide emergency make-up water to the UHS during off-normal events.

Design Commitments

  • The UHS American Society of Mechanical Engineers (ASME) Code Class 3 piping system listed in Table 3.6-1 complies with ASME Code Section III requirements.
  • The UHS Code Class 3 components listed in Table 3.6-1 conform to the rules of construction of ASME Code Section III.

Tier 1 3.6-1 Revision 4

NuScale Tier 1 Ultimate Heat Sink

  • The spent fuel pool, refueling pool, reactor pool, and dry dock piping and connections are located to prevent the drain down of the SFP and reactor pool water level below the minimum safety water level.

3.6.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.6-2 contains the inspections, tests, and analyses for the UHS.

Tier 1 3.6-2 Revision 4

NuScale Tier 1 Ultimate Heat Sink Table 3.6-1: Ultimate Heat Sink Piping System and Mechanical Equipment Piping System Description ASME Code Section III Class Make-up line from the exterior of the RXB to the SFP. 3 Mechanical Equipment Equipment Name ASME Code Section III Class UHS make-up line isolation valve 3 Tier 1 3.6-3 Revision 4

NuScale Tier 1 Ultimate Heat Sink Table 3.6-2: Ultimate Heat Sink Piping System Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The ultimate heat sink ASME Code An inspection will be performed of the The ASME Code Section III Design Class 3 piping system listed in ultimate heat sink ASME Code Class 3 Report (NCA-3550) exists and Table 3.6-1 complies with ASME Code as-built piping system listed in concludes that the ultimate heat sink Section III requirements. Table 3.6-1 Design Report required by ASME Code Class 3 as-built piping ASME Code Section III. system listed in Table 3.6-1 meets the requirements of ASME Code Section III.
2. The UHS Code Class 3 components An inspection will be performed of the The ASME Code Section III Data Report listed in Table 3.6-1 conform to the UHS ASME Code Class 3 as-built for the UHS ASME Code Class 3 rules of construction of ASME Code component Data Report for the components listed in Table 3.6-1 and Section III. components listed in Table 3.6-1 interconnecting piping exists and required by ASME Code Section III. concludes that the requirements of ASME Code Section III are met.
3. The spent fuel pool, refueling pool, An inspection will be performed of the There are no gates, openings, drains, reactor pool, and dry dock piping and as-built SFP, RFP, reactor pool and dry or piping within the SFP, RFP, reactor connections are located to prevent the dock piping and connections. pool, and dry dock that are below 80 ft drain down of the SFP and reactor building elevation (55 ft pool level) as pool water level below the minimum measured from the bottom of the SFP safety water level. and reactor pool.

Tier 1 3.6-4 Revision 4

NuScale Tier 1 Fire Protection System 3.7 Fire Protection System 3.7.1 Design Description

System Description

The scope of this section is the fire protection system (FPS). The FPS is comprised of the equipment and components that provide early fire detection and suppression to limit the spread of fires. The FPS is a nonsafety-related system that supports up to 12 NuScale Power Modules (NPMs). The FPS equipment is located throughout the plant site.

The FPS includes the following equipment:

  • fire water storage tanks, motor and diesel driven fire pumps, jockey pump, distribution piping, valves, and fire hydrants
  • automatic fire detection, fire alarm notification, and fire suppression systems, including fire water supply and distribution systems
  • manual firefighting capability, including portable fire extinguishers, standpipes, hydrants, hose stations, and fire department connections The FPS performs the following nonsafety-related system functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:
  • The FPS supports the Reactor Building by providing fire prevention, detection, and suppression.
  • The FPS supports the Radioactive Waste Building by providing fire prevention, detection, and suppression.
  • The FPS supports the Control Building by providing fire prevention, detection, and suppression.

Design Commitments

  • Two separate firewater storage tanks provide a dedicated volume of water for firefighting.
  • The FPS has a sufficient number of fire pumps to provide the flow demand for the largest sprinkler or deluge system plus an additional 500 gpm for fire hoses assuming failure of the largest fire pump or loss of off-site power.
  • Safe-shutdown can be achieved assuming that all equipment in any one fire area (except for the main control room (MCR) and under the bioshield) is rendered inoperable by fire damage and that reentry into the fire area for repairs and operator actions is not possible. An alternative shutdown capability that is physically and electrically independent of the MCR exists. Additionally, smoke, hot gases, or fire suppressant cannot migrate from the affected fire area into other fire areas to the extent that they could adversely affect safe-shutdown capabilities, including operator actions.
  • A plant fire hazards analysis (FHA) considers potential fire hazards and ensures the fire protection features in each fire area are suitable for the hazards.

Tier 1 3.7-1 Revision 4

NuScale Tier 1 Fire Protection System 3.7.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.7-1 contains the inspections, tests, and analyses for the FPS.

Tier 1 3.7-2 Revision 4

NuScale Tier 1 Fire Protection System Table 3.7-1: Fire Protection System Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. Two separate firewater storage tanks An inspection will be performed of the Each firewater storage tank provides a provide a dedicated volume of water as-built firewater storage tanks. usable water volume dedicated for for firefighting. firefighting that is greater than or equal to 300,000 gallons.
2. The FPS has a sufficient number of fire i. An analysis will be performed of i. A report exists and concludes that pumps to provide the flow demand for the as-built fire pumps. the fire pumps can provide the the largest sprinkler or deluge system ii. A test will be performed of the fire flow demand for the largest plus an additional 500 gpm for fire pumps. sprinkler or deluge system plus an hoses assuming failure of the largest additional 500 gpm for fire hoses fire pump or loss of off-site power. assuming failure of the largest fire pump or loss of off-site power.

ii. Each fire pump delivers the design flow to the FPS.

3. Safe-shutdown can be achieved A safe-shutdown analysis of the as- A safe-shutdown analysis report exists assuming that all equipment in any built plant will be performed, and concludes that:

one fire area (except for the MCR and including a post-fire safe-shutdown

  • Safe-shutdown can be achieved under the bioshield) is rendered circuit analysis. assuming that all equipment in any inoperable by fire damage and that one fire area (except for the MCR and reentry into the fire area for repairs under the bioshield) is rendered and operator actions is not possible. inoperable by fire and that reentry An alternative shutdown capability into the fire area for repairs and that is physically and electrically operator actions is not possible independent of the MCR exists.
  • Smoke, hot gases, or fire suppressant Additionally, smoke, hot gases, or fire cannot migrate from the affected suppressant cannot migrate from the fire area into other fire areas to the affected fire area into other fire areas extent that they could adversely to the extent that they could adversely affect safe-shutdown capabilities, affect safe-shutdown capabilities, including operator actions.

including operator actions.

  • MPS equipment rooms within the Reactor Building used as the alternative shutdown capability are physically and electrically independent of the MCR.
4. A plant FHA considers potential fire A FHA of the as-built plant will be A FHA report exists and concludes hazards and ensures the fire performed. that:

protection features in each fire area

  • Combustible loads and ignition are suitable for the hazards. sources are accounted for, and
  • Fire protection features are suitable for the hazards they are intended to protect against.

Tier 1 3.7-3 Revision 4

NuScale Tier 1 Plant Lighting System 3.8 Plant Lighting System 3.8.1 Design Description

System Description

The scope of this section is the plant lighting system (PLS). The PLS is a nonsafety-related system and supports up to 12 NuScale Power Modules (NPMs). The PLS provides artificial illumination for the entire plant: buildings (interior and exterior), rooms, spaces, and all outdoor areas of the plant. The PLS consists of normal and emergency lighting and includes miscellaneous non-lighting loads as required.

The PLS performs the following nonsafety-related system functions that are verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The PLS supports the Control Building by providing normal lighting.

Design Commitments

  • The PLS provides normal illumination of the operator workstations and auxiliary panels in the MCR.
  • The PLS provides emergency illumination of the operator workstations and auxiliary panels in the MCR.

3.8.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.8-1 contains the inspections, tests, and analyses for the PLS.

Tier 1 3.8-1 Revision 4

NuScale Tier 1 Plant Lighting System Table 3.8-1: Plant Lighting System Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The PLS provides normal illumination A test will be performed of the MCR The PLS provides at least 100 foot-of the operator workstations and operator workstations and auxiliary candles illumination at the MCR auxiliary panels in the MCR. panel illumination. operator workstations and at least 50 foot-candles at the auxiliary panels.
2. The PLS provides emergency A test will be performed of the MCR The PLS provides at least 10 foot-illumination of the operator operator workstations and auxiliary candles of illumination at the MCR workstations and auxiliary panels in panel illumination. operator workstations and auxiliary the MCR. panels when it is the only MCR lighting system in operation.
3. Eight-hour battery-pack emergency A test will be performed of the eight- Eight-hour battery-pack emergency lighting fixtures provide illumination hour battery-pack emergency lighting lighting fixtures illuminate their for post-FSSD activities performed by fixtures. required target areas to provide at operators outside the MCR and RSS least one foot-candle illumination in where post-FSSD activities are the areas outside the MCR or RSS performed. where post-FSSD activities are performed.

Tier 1 3.8-2 Revision 4

NuScale Tier 1 Radiation Monitoring - NuScale Power Modules 1 - 12 3.9 Radiation Monitoring - NuScale Power Modules 1 - 12 3.9.1 Design Description

System Description

The scope of this section is automatic actions of various systems based on radiation monitoring (RM). Automatic actions of systems based on RM are nonsafety-related functions. The systems actuated by these automatic RM functions are shared by NuScale Power Modules (NPMs) 1-12.

Design Commitments

  • The normal control room HVAC system (CRVS) automatically responds to the CRVS high-radiation signals upstream of the CRVS filter unit listed in Table 3.9-1 to mitigate a release of radioactivity.
  • The CRVS and the control room habitability system (CRHS) automatically respond to the CRVS high-radiation signals downstream of the CRVS filter unit listed in Table 3.9-1 to mitigate a release of radioactivity.
  • The Reactor Building HVAC system (RBVS) automatically responds to the RBVS high-radiation signals listed in Table 3.9-1 to mitigate a release of radioactivity.
  • The gaseous radioactive waste system (GRWS) automatically responds to the GRWS high-radiation signals listed in Table 3.9-1 to mitigate a release of radioactivity.
  • The liquid radioactive waste system (LRWS) automatically responds to the LRWS high-radiation signals listed in Table 3.9-1 to mitigate a release of radioactivity.
  • The auxiliary boiler system (ABS) automatically responds to the ABS high-radiation signals listed in Table 3.9-1 to mitigate a release of radioactivity.
  • The pool surge control system (PSCS) automatically responds to the PSCS high-radiation signal listed in Table 3.9-1 to mitigate a release of radioactivity.

3.9.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.9-2 contains the inspections, tests, and analyses for radiation monitoring NPMs 1-12.

Tier 1 3.9-1 Revision 4

Tier 1 NuScale Tier 1 Table 3.9-1: Radiation Monitoring - NuScale Power Modules 1-12 Automatic Actions Variable Monitored Actuated Component(s) Component Action(s)

CRVS outside air upstream of CRVS filter unit 1. CRVS filter unit bypass damper 1. Close

2. CRVS filter unit bypass damper 2. Close
3. CRVS filter unit inlet isolation damper 3. Open
4. CRVS filter unit outlet isolation damper 4. Open
5. CRVS filter unit fan 5. Start CRVS outside air downstream of CRVS filter 1. CRVS outside air intake damper 1. Close unit 2. CRVS outside air intake damper 2. Close
3. CRVS filter unit fan 3. Stop
4. CRVS control room envelope supply damper 4. Close
5. CRVS control room envelope supply damper 5. Close
6. CRVS control room envelope return damper 6. Close
7. CRVS control room envelope return damper 7. Close
8. CRVS control room envelope smoke purge damper 8. Close
9. CRVS control room envelope smoke purge damper 9. Close
10. CRVS control room envelope exhaust damper 10. Close
11. CRVS control room envelope exhaust damper 11. Close
12. CRHS air supply isolation valve 12. Open 3.9-2 13. CRHS air supply isolation valve 13. Open
14. CRHS pressure relief isolation valve 14. Open
15. CRHS pressure relief isolation valve 15. Open Radiation Monitoring - NuScale Power Modules 1 - 12 RBVS spent fuel pool exhaust 1. RBVS Reactor Building general exhaust isolation damper for the spent fuel pool 1. Close and dry dock area 2. Open
2. RBVS spent fuel pool filter unit A inlet isolation damper 3. Open
3. RBVS spent fuel pool filter unit A outlet isolation damper 4. Close
4. RBVS spent fuel pool filter unit A bypass isolation damper 5. Open
5. RBVS spent fuel pool filter unit B inlet isolation damper 6. Open
6. RBVS spent fuel pool filter unit B outlet isolation damper 7. Close
7. RBVS spent fuel pool filter unit B bypass isolation damper 8. Reduce flow to maintain Reactor
8. RBVS main supply AHU fan Building (RXB) & Radioactive Waste
9. RBVS main supply AHU fan Building (RWB) dP
10. RBVS main supply AHU fan 9. Reduce flow to maintain RXB & RWB
11. RBVS main supply AHU fan dP
10. Reduce flow to maintain RXB & RWB dP
11. Reduce flow to maintain RXB & RWB Revision 4 dP GRWS train A charcoal decay bed discharge 1. GRWS train A charcoal bed effluent isolation valve 1. Close

Table 3.9-1: Radiation Monitoring - NuScale Power Modules 1-12 Automatic Actions (Continued)

Tier 1 NuScale Tier 1 Variable Monitored Actuated Component(s) Component Action(s)

GRWS train B charcoal decay bed discharge 1. GRWS train B charcoal bed effluent isolation valve 1. Close GRWS effluent to RBVS 1. GRWS common charcoal bed effluent isolation valve 1. Close

2. GRWS common charcoal bed effluent isolation valve 2. Close LRWS discharge to utility water system 1. LRWS to UWS isolation valve 1. Close (UWS) 2. LRWS to UWS isolation valve 2. Close ABS flash tank vent 1. ABS flash tank vent pressure control valve 1. Close
2. ABS high pressure steam supply isolation valve 2. Close
3. ABS high pressure steam supply isolation valve 3. Close ABS high pressure to low pressure steam 1. ABS high pressure to low pressure steam supply pressure control valve 1. Close supply PSCS tank vent 1. PSCS tank inlet isolation valve 1. Close
2. PSCS tank outlet isolation valve 2. Close 3.9-3 Radiation Monitoring - NuScale Power Modules 1 - 12 Revision 4

NuScale Tier 1 Radiation Monitoring - NuScale Power Modules 1 - 12 Table 3.9-2: Radiation Monitoring - NuScale Power Modules 1-12 Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The CRVS automatically responds to A test will be performed of the CRVS Upon initiation of the real or simulated the CRVS high-radiation signals high-radiation signals listed in CRVS high-radiation signals upstream upstream of the CRVS filter unit listed Table 3.9-1. of the CRVS filter unit listed in in Table 3.9-1 to mitigate a release of Table 3.9-1, the CRVS automatically radioactivity. aligns/actuates the identified components to the positions identified in the table.
2. The CRVS and the CRHS automatically A test will be performed of the CRVS Upon initiation of the real or simulated respond to the CRVS high-radiation high-radiation signals listed in CRVS high-radiation signals signals downstream of the CRVS filter Table 3.9-1. downstream of the CRVS filter unit unit listed in Table 3.9-1 to mitigate a listed in Table 3.9-1, the CRVS and the release of radioactivity. CRHS automatically align/actuate the identified components to the positions identified in the table.
3. The RBVS automatically responds to A test will be performed of the RBVS Upon initiation of the real or simulated the RBVS high-radiation signals listed high-radiation signals listed in RBVS high-radiation signals listed in in Table 3.9-1 to mitigate a release of Table 3.9-1. Table 3.9-1, the RBVS automatically radioactivity. aligns/actuates the identified components to the positions identified in the table.
4. The GRWS automatically responds to A test will be performed of the GRWS Upon initiation of the real or simulated the GRWS high-radiation signals listed high-radiation signals listed in GRWS high-radiation signals listed in in Table 3.9-1 to mitigate a release of Table 3.9-1. Table 3.9-1, the GRWS automatically radioactivity. aligns/actuates the identified components to the positions identified in the table.
5. Not Used. Not Used. Not Used.
6. Not Used. Not Used. Not Used.
7. The LRWS automatically responds to A test will be performed of the LRWS Upon initiation of the real or simulated the LRWS high-radiation signals listed high-radiation signals listed in LRWS high-radiation signals listed in in Table 3.9-1 to mitigate a release of Table 3.9-1. Table 3.9-1, the LRWS automatically radioactivity. aligns/actuates the identified components to the positions identified in the table.
8. The ABS automatically responds to the A test will be performed of the ABS Upon initiation of the real or simulated ABS high-radiation signals listed in high-radiation signals listed in ABS high-radiation signals listed in Table 3.9-1 to mitigate a release of Table 3.9-1. Table 3.9-1, the ABS automatically radioactivity. aligns/actuates the identified components to the positions identified in the table.
9. Not Used. Not Used. Not Used.
10. The PSCS automatically responds to A test will be performed of the PSCS Upon initiation of the real or simulated the PSCS high-radiation signal listed in high-radiation signal listed in PSCS high-radiation signal listed in Table 3.9-1 to mitigate a release of Table 3.9-1. Table 3.9-1, the PSCS automatically radioactivity. aligns/actuates the identified components to the positions identified in the table.

Tier 1 3.9-4 Revision 4

NuScale Tier 1 Reactor Building Crane 3.10 Reactor Building Crane 3.10.1 Design Description

System Description

The scope of this section is the Reactor Building crane (RBC). The RBC is a bridge crane that rides on rails anchored to the Reactor Building. The bridge crane can travel the length of the reactor pool, refueling pool, and the dry dock. The RBC is nonsafety-related and supports up to 12 NuScale Power Modules (NPMs). The Reactor Building houses all RBC equipment.

The RBC includes the following:

  • RBC with auxiliary hoist
  • below-the-hook lifting devices, including the module lifting adapter (MLA) and the wet hoist The RBC performs the following risk-significant system function that is verified by Inspections, Tests, Analyses, and Acceptance Criteria:
  • The RBC supports the NuScale Power Module by providing structural support and mobility while moving from refueling, inspection and operating bay.

Design Commitments

  • The RBC main hoist is single-failure-proof in accordance with the approved design.
  • The RBC auxiliary hoists are single-failure-proof in accordance with the approved design.
  • The RBC wet hoist is single-failure-proof in accordance with the approved design.
  • The RBC main hoist is capable of lifting and supporting its rated load, holding the rated load, and transporting the rated load.
  • The RBC auxiliary hoists are capable of lifting and supporting their rated load, holding the rated load, and transporting the rated load.
  • The RBC wet hoist is capable of lifting and supporting its rated load, holding the rated load, and transporting the rated load.
  • All RBC weld joints whose failure could result in the drop of a critical load comply with the American Society of Mechanical Engineers NOG-1 Code.
  • The MLA is capable of supporting its rated load.
  • The MLA is single-failure-proof in accordance with the approved design.

3.10.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.10-1 contains the inspections, tests, and analyses for the RBC.

Tier 1 3.10-1 Revision 4

NuScale Tier 1 Reactor Building Crane Table 3.10-1: Reactor Building Crane Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The RBC main hoist is single-failure- An inspection will be performed of the A report exists and concludes that the proof in accordance with the as-built RBC main hoist. RBC main hoist is single-failure-proof approved design. in accordance with the approved design.
2. The RBC auxiliary hoists are single- An inspection will be performed of the A report exists and concludes that the failure-proof in accordance with the as-built RBC auxiliary hoists. RBC auxiliary hoists are single-failure-approved design. proof in accordance with the approved design.
3. The RBC wet hoist is single-failure- An inspection will be performed of the A report exists and concludes that the proof in accordance with the as-built RBC wet hoist. RBC wet hoist is single-failure-proof in approved design. accordance with the approved design.
4. The RBC main hoist is capable of lifting A rated load test will be performed of The RBC main hoist lifts, supports, and supporting its rated load, holding the RBC main hoist. holds with the brakes, and transports a the rated load, and transporting the load of at least 125 percent of the rated load. manufacturers rated capacity.
5. The RBC auxiliary hoists are capable of A rated load test will be performed of The RBC auxiliary hoists lift, support, lifting and supporting their rated load, the RBC auxiliary hoists. hold with the brakes, and transport a holding the rated load, and load of at least 125 percent of the transporting the rated load. manufacturers rated capacity.
6. The RBC wet hoist is capable of lifting A rated load test will be performed of The RBC wet hoist lifts, supports, holds and supporting its rated load, holding the RBC wet hoist. with the brakes, and transports a load the rated load, and transporting the of at least 125 percent of the rated load. manufacturers rated capacity.
7. All RBC weld joints whose failure could An inspection will be performed of the The results of the non-destructive result in the drop of a critical load as-built RBC weld joints whose failure examination of the RBC weld joints comply with the American Society of could result in the drop of a critical whose failure could result in the drop Mechanical Engineers NOG-1 Code. load. of a critical load comply with American Society of Mechanical Engineers NOG-1 Code.
8. Not Used. Not Used. Not Used.
9. The MLA is capable of supporting its i. A rated load test will be performed i. The MLA single load path rated load. of the MLA single load path elements support a load of at least elements. 300 percent of the manufacturer's rated capacity.

ii. A rated load test will be performed of the MLA dual load path ii. The MLA dual load path elements elements. support a load of at least 150 percent of the manufacturer's rated capacity.

10. The MLA is single-failure-proof in An inspection will be performed of the A report exists and concludes that the accordance with the approved design. as-built MLA. MLA is single-failure-proof in accordance with the approved design.

Tier 1 3.10-2 Revision 4

NuScale Tier 1 Reactor Building 3.11 Reactor Building 3.11.1 Design Description Building Description The scope of this section is the Reactor Building (RXB). The RXB is a safety-related structure.

The RXB supports up to 12 NuScale Power Modules. The RXB is a reinforced-concrete structure that is embedded in soil and supported on a basemat foundation. The RXB houses all Reactor Building components equipment.

The RXB performs the following safety-related system function that is verified by Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC):

  • The RXB supports the following systems by housing and providing structural support:

NuScale Power Module chemical and volume control system (CVCS) ultimate heat sink module protection system nuclear monitoring system The RXB performs the following nonsafety-related, risk-significant system function that is verified by ITAAC:

  • The RXB supports the RXB crane by housing and providing structural support.

Design Commitments

  • Fire and smoke barriers provide confinement so that the impact from internal fires, smoke, hot gases, or fire suppressants is contained within the RXB fire area of origin.
  • The Seismic Category I RXB is protected against external flooding in order to prevent flooding of safety-related structures, systems, and components (SSC) within the structure.
  • The RXB includes radiation shielding barriers for normal operation and post-accident radiation shielding.
  • The RXB includes radiation attenuating doors for normal operation and post-accident radiation shielding. These doors have a radiation attenuation capability that meets or exceeds that of the wall within which they are installed.
  • The RXB is Seismic Category I and maintains its structural integrity under the design basis loads.
  • Non-Seismic Category I SSC located where there is a potential for adverse interaction with the RXB or a Seismic Category I SSC in the RXB will not impair the ability of Seismic Category I SSC to perform their safety functions during or following a safe shutdown earthquake (SSE).

Tier 1 3.11-1 Revision 4

NuScale Tier 1 Reactor Building

  • Safety-related SSC are protected against the dynamic and environmental effects associated with postulated failures in high- and moderate-energy piping systems.

3.11.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.11-2 contains the inspections, tests, and analyses for the RXB.

Tier 1 3.11-2 Revision 4

NuScale Tier 1 Reactor Building Table 3.11-1: Not Used Tier 1 3.11-3 Revision 4

NuScale Tier 1 Reactor Building Table 3.11-2: Reactor Building Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. Fire and smoke barriers provide An inspection will be performed of the The following RXB fire and smoke confinement so that the impact from RXB as-built fire and smoke barriers. barriers exist in accordance with the internal fires, smoke, hot gases,or fire fire hazards analysis, and have been suppressants is contained within the qualified for the fire rating specified in RXB fire area of origin. the fire hazards analysis:
  • fire-rated doors
  • fire-rated penetration seals
  • fire-rated walls, floors, and ceilings
  • smoke barriers
2. Internal flooding barriers provide An inspection will be performed of the The following RXB internal flooding confinement so that the impact from RXB as-built internal flooding barriers. barriers exist in accordance with the internal flooding is contained within internal flooding analysis report and the RXB flooding area of origin. have been qualified as specified in the internal flooding analysis report:
  • flood resistant doors
  • curbs and sills
  • walls
  • water tight penetration seals
  • National Electrical Manufacturer's Association enclosures
3. The Seismic Category I RXB is An inspection will be performed of the The RXB floor elevation at ground protected against external flooding in RXB as-built floor elevation at ground entrances is higher than the maximum order to prevent flooding of safety- entrances. external flood elevation.

related SSC within the structure.

4. The RXB includes radiation shielding An inspection and analysis will be A report exists and concludes the barriers for normal operation and performed of the as-built RXB radiation attenuation capability of RXB post-accident radiation shielding. radiation shielding barriers. radiation shielding barriers is greater than or equal to the required attenuation capability of the approved design.
5. The RXB includes radiation An inspection will be performed of the The RXB radiation attenuating doors attenuating doors for normal as-built RXB radiation attenuating are installed in their design location operation and for post-accident doors. and have a radiation attenuation radiation shielding. These doors have a capability that meets or exceeds that radiation attenuation capability that of the wall within which they are meets or exceeds that of the wall installed.

within which they are installed.

6. The RXB is Seismic Category I and A reconciliation analysis will be A design summary report exists and maintains its structural integrity under performed of the as-built RXB under concludes that the design basis loads. the actual design basis loads. (1) the as-built RXB maintains its structural integrity in accordance with the approved design under the actual design basis loads, and (2) the in-structure responses for the as-built RXB are enveloped by those in the approved design.

Tier 1 3.11-4 Revision 4

NuScale Tier 1 Reactor Building Table 3.11-2: Reactor Building Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

7. Non-Seismic Category I SSC located An inspection and analysis will be A report exists and concludes that the where there is a potential for adverse performed of the as-built non-Seismic Non-Seismic Category I SSC located interaction with the RXB or a Seismic Category I SSC located where there is a where there is a potential for adverse Category I SSC in the RXB will not potential for adverse interaction with interaction with the RXB or a Seismic impair the ability of Seismic Category I the RXB or a Seismic Category I SSC in Category I SSC in the RXB will not SSC to perform their safety functions the RXB. impair the ability of Seismic Category I during or following a SSE. SSC to perform their safety functions during or following an SSE as demonstrated by one or more of the following criteria:
  • Seismic Category I SSC are isolated from non-Seismic Category I SSC, so that interaction does not occur.
  • Seismic Category I SSC are analyzed to confirm that the ability to perform their safety functions is not impaired as a result of impact from non-Seismic Category I SSC.
  • A non-Seismic Category I restraint system designed to Seismic Category I requirements is used to assure that no interaction occurs between Seismic Category I SSC and non-Seismic Category I SSC.
8. Safety-related SSC are protected An inspection and analysis will be Protective features are installed in against the dynamic and performed of the as-built high- and accordance with the as-built Pipe environmental effects associated with moderate-energy piping systems and Break Hazard Analysis Report and postulated failures in high- and protective features for the safety- safety-related SSC are protected moderate-energy piping systems. related SSC located in the RXB outside against or qualified to withstand the the Reactor Pool Bay. dynamic and environmental effects associated with postulated failures in high- and moderate-energy piping systems.

Tier 1 3.11-5 Revision 4

NuScale Tier 1 Radioactive Waste Building 3.12 Radioactive Waste Building 3.12.1 Design Description Building Description The scope of this section is the Radioactive Waste Building (RWB). The RWB is a nonsafety-related building which supports up to 12 NuScale Power Modules (NPMs). The RWB is located west of the Reactor Building (RXB) and serves as the primary radioactive waste facility to collect waste from the RXB and the Annex Building.

The RWB is a reinforced-concrete structure with a concrete roof supported on a steel frame.

It is embedded in soil and is supported on a foundation basemat. There are penetrations in the east wall and in the west wall through which the NuScale Power Module is transported into the RXB using a module import trolley.

Design Commitments

  • The RWB includes radiation shielding barriers for normal operation and post-accident radiation shielding.
  • The RWB includes radiation attenuating doors for normal operation and for post-accident radiation shielding. These doors have a radiation attenuation capability that meets or exceeds that of the wall within which they are installed.
  • The RWB is an RW-IIa structure and maintains its structural integrity under the design basis loads.

3.12.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.12-2 contains the inspections, tests, and analyses for the RWB.

Tier 1 3.12-1 Revision 4

NuScale Tier 1 Radioactive Waste Building Table 3.12-1: Not Used Tier 1 3.12-2 Revision 4

NuScale Tier 1 Radioactive Waste Building Table 3.12-2: Radioactive Waste Building ITAAC No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The RWB includes radiation shielding An inspection and analysis will be A report exists and concludes the barriers for normal operation and performed of the as-built RWB radiation attenuation capability of post-accident radiation shielding. radiation shielding barriers. RWB radiation shielding barriers is greater than or equal to the required attenuation capability of the approved design.
2. The RWB includes radiation An inspection will be performed of the The RWB radiation attenuating doors attenuating doors for normal as-built RWB radiation attenuating are installed in their design location operation and for post-accident doors. and have a radiation attenuation radiation shielding. These doors have a capability that meets or exceeds that radiation attenuation capability that of the wall within which they are meets or exceeds that of the wall installed.

within which they are installed.

3. The RWB is an RW-IIa structure and A reconciliation analysis will be A design summary report exists and maintains its structural integrity under performed of the as-built RW-IIa RWB concludes that (1) the as-built RWB the design basis loads. under the actual design basis loads. maintains its structural integrity in accordance with the approved design under the actual design basis loads, and (2) the in-structure responses for the as-built RWB are enveloped by those in the approved design.

Tier 1 3.12-3 Revision 4

NuScale Tier 1 Control Building 3.13 Control Building 3.13.1 Design Description Building Description The scope of this section is the Control Building (CRB). The CRB is a safety-related building that supports up to 12 NuScale Power Modules (NPMs). The CRB houses the main control room, the technical support center, the control room habitability system, the normal control room HVAC system, and safety and nonsafety control and instrumentation systems.

The CRB is designated as Seismic Category I except for the following areas which are designated Seismic Category II:

  • above the 120'-0" elevation
  • inside the elevator shaft (full building height)
  • inside the two stairwells (full building height)
  • the fire protection vestibule located on the East side of the CRB The CRB is a reinforced-concrete building with an upper steel structure supporting the roof and has an underground equipment tunnel that connects to the Reactor Building. The tunnel is comprised of two levels-- an upper tunnel for personnel access to the Reactor Building and a lower tunnel that is a utilities tunnel between the CRB and for the Reactor Building. Above Elevation 120'-0", the CRB is a steel structure supporting a steel roof.

The CRB performs the following safety-related system function that is verified by Inspections, Tests, Analyses, and Acceptance Criteria:

  • The CRB supports the module protection system by housing and providing structural support.

The CRB performs the following nonsafety-related system function that is verified by Inspections, Tests, Analyses, and Acceptance Criteria:

Design Commitments

  • Fire and smoke barriers provide confinement so that the impact from internal fires, smoke, hot gases, or fire suppressants is contained within the CRB fire area of origin.
  • The Seismic Category I CRB is protected against external flooding in order to prevent flooding of safety-related structures, systems, and components (SSC) within the structure.
  • The CRB at Elevation 120'-0" and below (except for the elevator shaft, the stairwells and the fire protection vestibule which are Seismic Category II) is Seismic Category I and maintains its structural integrity under the design basis loads.

Tier 1 3.13-1 Revision 4

NuScale Tier 1 Control Building

  • Non-Seismic Category I SSC located where there is a potential for adverse interaction with the CRB or a Seismic Category I SSC in the CRB will not impair the ability of Seismic Category I SSC to perform their safety functions during or following a safe shutdown earthquake.

3.13.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.13-1 contains the inspections, tests, and analyses for the CRB.

Tier 1 3.13-2 Revision 4

NuScale Tier 1 Control Building Table 3.13-1: Control Building Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. Fire and smoke barriers provide An inspection will be performed of the The following CRB fire and smoke confinement so that the impact from CRB as-built fire and smoke barriers. barriers exist in accordance with the internal fires, smoke, hot gases, or fire fire hazards analysis, and have been suppressants is contained within the qualified for the fire rating specified in CRB fire area of origin. the fire hazards analysis:
  • fire-rated doors
  • fire-rated penetration seals
  • fire-rated walls, floors, and ceilings
  • smoke barriers
2. Internal flooding barriers provide An inspection will be performed of the The following CRB internal flooding confinement so that the impact from CRB as-built internal flooding barriers. barriers exist in accordance with the internal flooding is contained within internal flooding analysis report and the CRB flooding area of origin. have been qualified as specified in the internal flooding analysis report:
  • flood resistant doors
  • walls
  • water tight penetration seals
  • National Electrical Manufacturer's Association (NEMA) enclosures
3. The Seismic Category I CRB is An inspection will be performed of the The CRB floor elevation at ground protected against external flooding in CRB as-built floor elevation at ground entrances is higher than the maximum order to prevent flooding of safety- entrances. external flood elevation.

related SSC within the structure.

4. The CRB at Elevation 120-0 and A reconciliation analysis will be A design summary report exists and below (except for the elevator shaft, performed of the as-built CRB at concludes that the stairwells, and the fire protection Elevation 120'-0" and below under the (1) the as-built CRB at Elevation 120'-0" vestibule which are Seismic Category actual design basis loads. and below maintains its structural II) is Seismic Category I and maintains integrity in accordance with the its structural integrity under the approved design under the actual design basis loads. design basis loads, and (2) the in-structure responses for the as-built CRB at Elevation 120'-0" and below are enveloped by those in the approved design.

Tier 1 3.13-3 Revision 4

NuScale Tier 1 Control Building Table 3.13-1: Control Building Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

5. Non-Seismic Category I SSC located An inspection and analysis will be A report exists and concludes that the where there is a potential for adverse performed of the as-built non-Seismic Non-Seismic Category I SSC located interaction with the CRB or a Seismic Category I SSC located where there is a where there is a potential for adverse Category I SSC in the CRB will not potential for adverse interaction with interaction with the CRB or a Seismic impair the ability of Seismic Category I the CRB or a Seismic Category I SSC in Category I SSC in the CRB will not SSC to perform their safety functions the CRB. impair the ability of Seismic Category I during or following a safe shutdown SSC to perform their safety functions earthquake. during or following an SSE as demonstrated by one or more of the following criteria:
  • Seismic Category I SSC are isolated from non-Seismic Category I SSC, so that interaction does not occur.
  • Seismic Category I SSC are analyzed to confirm that the ability to perform their safety functions is not impaired as a result of impact from non-Seismic Category I SSC.
  • A non-Seismic Category I restraint system designed to Seismic Category I requirements is used to assure that no interaction occurs between Seismic Category I SSC and non-Seismic Category I SSC.

Tier 1 3.13-4 Revision 4

NuScale Tier 1 Equipment Qualification - Shared Equipment 3.14 Equipment Qualification - Shared Equipment 3.14.1 Design Description

System Description

The scope of this section is equipment qualification (EQ) of equipment shared by NuScale Power Modules 1 through 12.

This section applies to the safety-related reactor pressure vessel (RPV) support stand and Reactor Building (RXB) over-pressurization vents, and a limited population of common, nonsafety-related equipment that has augmented Seismic Category I or environmental qualification requirements. The nonsafety-related equipment in this section provides one of the following nonsafety-related functions:

  • Provides physical support of irradiated fuel (fuel handling machine, spent fuel storage racks, reactor building crane, and module lifting adapter).
  • Provides containment of the UHS water.
  • Monitors UHS water level.

Additionally, this section applies to the nonsafety-related, RW-IIa components and piping used for processing gaseous radioactive waste.

Design Commitments

  • The common, Seismic Category I equipment listed in Table 3.14-1, including its associated supports and anchorages, withstands design basis seismic loads without loss of its function(s) during and after a safe shutdown earthquake.
  • The common electrical equipment listed in Table 3.14-1 located in a harsh environment, including its connection assemblies, withstands the design basis harsh environmental conditions experienced during normal operations, anticipated operational occurrences, design basis accidents, and post-accident conditions, and performs its function for the period of time required to complete the function.
  • The RW-IIa components and piping used for processing gaseous radioactive waste listed in Table 3.14-1 are constructed to the standards of RW-IIa.

3.14.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.14-2 contains the inspections, tests, and analyses for EQ-shared equipment.

Tier 1 3.14-1 Revision 4

Tier 1 NuScale Tier 1 Table 3.14-1: Mechanical and Electrical/Instrumentation and Controls Shared Equipment Description Location EQ EQ Program Seismic Class 1E EQ Environment Category Category(1)

Module Assembly Equipment - Bolting RPV Support Stand RXB - UHS N/A N/A I N/A N/A Fuel Handling Equipment Fuel handling machine (FHM) RXB 100'-0" Elevation Harsh Electrical I No B Mechanical Spent Fuel Storage System Fuel Storage Racks(14 Total) RXB - Spent Fuel Pool N/A N/A I N/A N/A Ultimate Heat Sink Pool level instruments (8 Total) RXB - UHS Harsh Electrical I No A Water Makeup Line RXB - UHS N/A N/A I N/A N/A Reactor Building Cranes Reactor Building crane RXB 100-0 thru 145-6 Elevation Harsh Electrical Mechanical I No B Module Lifting Adapter RXB - Various N/A N/A I N/A N/A 3.14-2 Reactor Building Components UHS Pool Liner and Dry Dock Liner RXB - UHS N/A N/A I N/A N/A RXB over-pressurization vents (34 Total) RXB N/A N/A I N/A A Liquid Radioactive Waste System Degasifiers (2 Total) RXB N/A N/A RW-IIa N/A N/A For each line connected to a degasifier, RXB N/A N/A RW-IIa N/A N/A Equipment Qualification - Shared Equipment piping and components up to and including the first isolation valve Gaseous Radioactive Waste System Charcoal Guard Bed RWB N/A N/A RW-IIa N/A N/A For each line connected to the charcoal RWB N/A N/A RW-IIa N/A N/A guard bed, piping and components up to and including the first isolation valve Charcoal Decay Beds (8 Total) RWB N/A N/A RW-IIa N/A N/A Revision 4

Table 3.14-1: Mechanical and Electrical/Instrumentation and Controls Shared Equipment (Continued)

Tier 1 NuScale Tier 1 Description Location EQ EQ Program Seismic Class 1E EQ Environment Category Category(1)

For each line connected to a charcoal RWB N/A N/A RW-IIa N/A N/A decay bed, piping and components up to and including the first isolation valve Notes:

1. EQ Categories:
  • A - Equipment that will experience the environmental conditions of design basis accidents for which it must function to mitigate said accidents, and that will be qualified to demonstrate operability in the accident environment for the time required for accident mitigation with safety margin to failure.
  • B - Equipment that will experience the environmental conditions of design basis accidents through which it need not function for mitigation of said accidents, but through which it must not fail in a manner detrimental to plant safety or accident mitigation, and that will be qualified to demonstrate the capability to withstand the accident environment for the time during which it must not fail with safety margin to failure.

3.14-3 Equipment Qualification - Shared Equipment Revision 4

NuScale Tier 1 Equipment Qualification - Shared Equipment Table 3.14-2: Equipment Qualification - Shared Equipment ITAAC No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The common Seismic Category I i. A type test, analysis, or a i. A Seismic Qualification Report equipment listed in Table 3.14-1, combination of type test and exists and concludes that the including its associated supports and analysis will be performed of the common Seismic Category I anchorages, withstands design basis common Seismic Category I equipment listed in Table 3.14-1, seismic loads without loss of its equipment listed in Table 3.14-1, including its associated supports function(s) during and after a safe including its associated supports and anchorages, will withstand the shutdown earthquake. and anchorages. design basis seismic loads and perform its function during and after a safe shutdown earthquake.

ii. An inspection will be performed of ii. The common Seismic Category I the common Seismic Category I as- equipment listed in Table 3.14-1, built equipment listed in including its associated supports Table 3.14-1, including its and anchorages, is installed in its associated supports and design location in a Seismic anchorages. Category I structure in a configuration bounded by the equipments Seismic Qualification Report.

2. The common electrical equipment i. A type test or a combination of i. An equipment qualification record listed in Table 3.14-1 located in a harsh type test and analysis will be form exists and concludes that the environment, including its connection performed of the common common electrical equipment assemblies, withstands the design electrical equipment listed in listed in Table 3.14-1, including its basis harsh environmental conditions Table 3.14-1, including its connection assemblies, performs experienced during normal connection assemblies. its function under the operations, anticipated operational environmental conditions occurrences, DBA, and post-accident specified in the equipment conditions and performs its function qualification record form for the for the period of time required to period of time required to complete the function. complete the function.

ii. An inspection will be performed of ii. The common electrical equipment the common as-built electrical listed in Table 3.14-1, including its equipment listed in Table 3.14-1, connection assemblies, is installed including its connection in its design location in a assemblies. configuration bounded by the EQ record form.

3. The RW-IIa components and piping i. An inspection and reconciliation i. A report exists and concludes that used for processing gaseous analysis will be performed of the the as-built RW-IIa components radioactive waste listed in Table 3.14-1 as-built RW-IIa components and and piping used for processing are constructed to the standards of piping used for processing gaseous radioactive waste listed in RW-IIa. gaseous radioactive waste listed in Table 3.14-1 meet the RW-IIa Table 3.14-1. design criteria.

Tier 1 3.14-4 Revision 4

NuScale Tier 1 Human Factors Engineering 3.15 Human Factors Engineering 3.15.1 Design Description

System Description

The human factors engineering (HFE) program design process is employed to design the control rooms and the human-system interfaces (HSIs) and associated equipment while relating the high-level goal of plant safety into individual, discrete focus areas for the design.

The HFE and control room design team establish design guidelines, define program-specific design processes, and verify that the guidelines and processes are followed. The scope of the HFE program includes the following:

  • location and accessibility requirements for the control rooms and other control stations
  • layout requirements of the control rooms, including requirements regarding the locations and design of individual displays and panels
  • basic concepts and detailed design requirements for the information displays, controls, and alarms for HSI control stations
  • coding and labeling conventions for control room components and plant displays
  • HFE design requirements and guidelines for the screen-based HSI, including the actual screen layout and the standard dialogues for accessing information and controls
  • requirements for the physical environment of the control rooms (e.g., lighting, acoustics, heating, ventilation, and air conditioning)
  • HFE requirements and guidelines regarding the layout of operator workstations and work spaces
  • corporate policies and procedures regarding the verification and validation of the design of HSI The HFE program applies to the design of the main control room (MCR) and the remote shutdown station. The HSI of the technical support center, the emergency operations facility, and local control stations (LCS) are derivatives of the MCR HSI. The design of LCS is accomplished concurrently with the applicable system design and follows guidelines established by the HFE and control room design team.

Design Commitments

  • The configuration of the MCR HSI is consistent with the design verified and validated by the integrated system validation as reconciled by the Design Implementation Implementation Plan.

3.15.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.15-1 contains the inspections, tests, and analyses for the HFE.

Tier 1 3.15-1 Revision 4

NuScale Tier 1 Human Factors Engineering Table 3.15-1: Human Factors Engineering Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The configuration of the main control An inspection will be performed of the A report exists and concludes the room HSI is consistent with the design as-built configuration of MCR HSI. as-built configuration of main control verified and validated by the room HSI is consistent with the design integrated system validation as verified and validated by the reconciled by the Design integrated system validation as Implementation Implementation Plan. reconciled by the Design Implementation Implementation Plan.

Tier 1 3.15-2 Revision 4

NuScale Tier 1 Physical Security System 3.16 Physical Security System 3.16.1 Design Description

System Description

The NuScale Power Plant physical security system design provides the capabilities to detect, assess, impede and delay threats up to and including the design basis threat, and to provide for defense-in-depth through the integration of systems, technologies, and equipment.

Design Commitments

  • Vital equipment will be located only within a vital area.
  • Access to vital equipment requires passage through at least two physical barriers.
  • The external walls, doors, ceilings, and floors in the main control room (MCR) and central alarm station (CAS) will be bullet-resistant.
  • An access control system will be installed and designed for use by individuals who are authorized access to vital areas within the nuclear island and structures without escort.
  • Unoccupied vital areas within the nuclear island and structures will be designed with locking devices and intrusion-detection devices that annunciate in the CAS.
  • The CAS will be located inside the protected area and will be designed so that the interior is not visible from the perimeter of the protected area.
  • Security alarm devices in the Reactor Building (RXB) and Control Building (CRB),

including transmission lines to annunciators, will be tamper-indicating and self-checking, and alarm annunciation indicates the type of alarm and its location.

  • Intrusion detection and assessment systems in the RXB and CRB will be designed to provide visual display and audible annunciation of alarms in the CAS.
  • Intrusion detection systems' recording equipment will record security alarm annunciations with the nuclear island and structures, including each alarm, false alarm, alarm check, and tamper indication and the type of alarm, location, alarm circuit, date, and time.
  • Emergency exits through the vital area boundaries within the nuclear island and structures will be alarmed with intrusion detection devices and are secured by locking devices that allow prompt egress during an emergency.
  • The CAS will have landline telephone service with the control room and local law enforcement authorities.
  • The CAS will be capable of continuous communication with on-duty security force personnel.
  • Non-portable communications equipment in the CAS will remain operable from an independent power source in the event of the loss of normal power.

3.16.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.16-1 contains the inspections, tests, and analyses for physical security system.

Tier 1 3.16-1 Revision 4

NuScale Tier 1 Physical Security System Table 3.16-1: Physical Security System Inspections, Tests, Analyses, and Acceptance Criteria No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. Vital equipment will be located only All vital equipment locations will be Vital equipment is located only within within a vital area. inspected. a vital area.
2. Access to vital equipment requires All vital equipment physical barriers Vital equipment is located within a passage through at least two physical will be inspected. protected area such that access to the barriers. vital equipment requires passage through at least two physical barriers.
3. The external walls, doors, ceilings, and Type test, analysis, or a combination of A report exists and concludes that the floors in the MCR and CAS will be type test and analysis of the external walls, doors, ceilings, and floors in the bullet-resistant. walls, doors, ceilings, and floors in the MCR and CAS are bullet-resistant.

MCR and CAS, will be performed.

4. An access control system will be The access control system will be The access control system is installed installed and designed for use by tested. and provides authorized access to vital individuals who are authorized access areas within the nuclear island and to vital areas within the nuclear island structures only to those individuals and structures without escort. with authorization for unescorted access.
5. Unoccupied vital areas within the Tests, inspections, or a combination of Unoccupied vital areas within the nuclear island and structures will be tests and inspections of unoccupied nuclear island and structures are designed with locking devices and vital areas' intrusion detection locked and alarmed and intrusion is intrusion detection devices that equipment and locking devices will be detected and annunciated in the CAS.

annunciate in the CAS. performed.

6. The CAS will be located inside the The CAS will be inspected. The CAS is located inside the protected area and will be designed so protected area, and the interior of the that the interior is not visible from the alarm station is not visible from the perimeter of the protected area. perimeter of the protected area.
7. Security alarm devices in the RXB and All security alarm devices and Security alarm devices, in the RXB and CRB, including transmission lines to transmission lines in the RXB and CRB CRB including transmission lines to annunciators, will be tamper- will be tested. annunciators, are tamper-indicating indicating and self-checking, and and self-checking; an automatic alarm annunciation indicates the type indication is provided when failure of of alarm and its location. the alarm system or a component thereof occurs or when the system is on standby power; the alarm annunciation indicates the type of alarm and location.
8. Intrusion detection and assessment Intrusion detection and assessment The intrusion detection systems, in the systems in the RXB and CRB will be systems in the RXB and CRB will be RXB and CRB provide a visual display designed to provide visual display and tested. and audible annunciation of all alarms audible annunciation of alarms in the in the CAS.

CAS.

9. Intrusion detection systems' recording The intrusion detection systems' Intrusion detection systems' recording equipment will record security alarm recording equipment will be tested. equipment is capable of recording annunciations within the nuclear each security alarm annunciation island and structures including each within the nuclear island and alarm, false alarm, alarm check, and structures, including each alarm, false tamper indication, and the type of alarm, alarm check, and tamper alarm, location, alarm circuit, date, and indication and the type of alarm, time. location, alarm circuit, date, and time.

Tier 1 3.16-2 Revision 4

NuScale Tier 1 Physical Security System Table 3.16-1: Physical Security System Inspections, Tests, Analyses, and Acceptance Criteria (Continued)

No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

10. Emergency exits through the vital area Tests, inspections, or a combination of Emergency exits through the vital area boundaries within the nuclear island tests and inspections of emergency boundaries within the nuclear island and structures will be alarmed with exits through vital area boundaries and structures are alarmed with intrusion detection devices and are within the nuclear island and intrusion detection devices and secured by locking devices that allow structures will be performed. secured by locking devices that allow prompt egress during an emergency. prompt egress during an emergency.
11. The CAS will have a landline telephone Tests, inspections, or a combination of The CAS is equipped with landline service with the control room and local tests and inspections of the CAS's telephone service with the control law enforcement authorities. landline telephone service will be room and local law enforcement performed. authorities.
12. The CAS will be capable of continuous Tests, inspections, or a combination of The CAS is capable of continuous communication with on-duty security tests and inspections of the CAS's communication with on-duty force personnel. continuous communication watchmen, armed security officers, capabilities will be performed. armed responders, or other security personnel who have responsibilities within the physical protection program and during contingency response events.
13. Non-portable communications Tests, inspections, or a combination of All nonportable communication equipment in the CAS will remain tests and inspections of the devices in the CAS remain operable operable from an independent power nonportable communications from an independent power source in source in the event of the loss of equipment will be performed. the event of the loss of normal power.

normal power.

Tier 1 3.16-3 Revision 4

NuScale Tier 1 Radiation Monitoring - NuScale Power Modules 1 - 6 3.17 Radiation Monitoring - NuScale Power Modules 1 - 6 3.17.1 Design Description

System Description

The scope of this section is automatic actions of various systems based on radiation monitoring. Automatic actions of systems based on radiation monitoring are nonsafety-related functions. The systems actuated by these automatic radiation monitoring functions are shared by NuScale Power Modules (NPMs) 1 through 6.

Design Commitments

  • The containment flooding and drain system (CFDS) automatically responds to the CFDS high-radiation signal listed in Table 3.17-1 to mitigate a release of radioactivity.
  • The balance-of-plant drain system (BPDS) automatically responds to the BPDS high-radiation signals listed in Table 3.17-1 to mitigate a release of radioactivity.

3.17.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.17-2 contains the inspections, tests, and analyses for radiation monitoring --

NuScale Power Modules 1 - 6.

Tier 1 3.17-1 Revision 4

NuScale Tier 1 Radiation Monitoring - NuScale Power Modules 1 - 6 Table 3.17-1: Radiation Monitoring - Automatic Actions for NuScale Power Modules 1 - 6 Variable Monitored Actuated Component(s) Component Action(s)

CFDS containment drain separator 1. CFDS containment drain separator gaseous discharge 1. Close gaseous discharge to Reactor isolation valve Building heating ventilation and air conditioning system BPDS 0A condensate polishing 1. North chemical waste water sump pump A 1. Stop system regeneration skid waste 2. North chemical waste water sump pump B 2. Stop effluent 3. North chemical water sump to BPDS collection tank flow 3. Close control valve

4. North chemical water sump to liquid radioactive waste 4. Close system (LRWS) isolation valve BPDS north turbine building floor 1. North waste water sump pump A 1. Stop drains 2. North waste water sump pump B 2. Stop
3. North waste water sump to BPDS collection tank flow 3. Close control valve
4. North waste water sump to LRWS isolation valve 4. Close BPDS auxiliary blowdown cooler 1. North waste water sump pump A 1. Stop condensate 2. North waste water sump pump B 2. Stop
3. North waste water sump to BPDS collection tank flow 3. Close control valve
4. North waste water sump to LRWS isolation valve 4. Close Tier 1 3.17-2 Revision 4

NuScale Tier 1 Radiation Monitoring - NuScale Power Modules 1 - 6 Table 3.17-2: Radiation Monitoring - Inspections, Tests, Analyses, and Acceptance Criteria for NuScale Power Modules 1-6 No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The CFDS automatically responds to A test will be performed of the CFDS Upon initiation of a real or simulated the CFDS high-radiation signal listed in high-radiation signal listed in CFDS high-radiation signal listed in Table 3.17-1 to mitigate a release of Table 3.17-1. Table 3.17-1, the CFDS automatically radioactivity. aligns/actuates the identified components to the positions identified in the table.
2. The BPDS automatically responds to A test will be performed of the BPDS Upon initiation of the real or simulated the BPDS high-radiation signals listed high-radiation signals listed in BPDS high-radiation signals listed in in Table 3.17-1 to mitigate a release of Table 3.17-1. Table 3.17-1the BPDS automatically radioactivity. aligns/actuates the identified components to the positions identified in the table.

Tier 1 3.17-3 Revision 4

NuScale Tier 1 Radiation Monitoring - NuScale Power Modules 7 - 12 3.18 Radiation Monitoring - NuScale Power Modules 7 - 12 3.18.1 Design Description

System Description

The scope of this section is automatic actions of various systems based on radiation monitoring. Automatic actions of systems based on radiation monitoring are nonsafety-related functions. The systems actuated by these automatic radiation monitoring functions are shared by NuScale Power Modules (NPMs) 7 through 12.

Design Commitments

  • The containment flooding and drain system (CFDS) automatically responds to the CFDS high-radiation signal listed in Table 3.18-1 to mitigate a release of radioactivity.
  • The balance-of-plant drain system (BPDS) automatically responds to the BPDS high-radiation signals listed in Table 3.18-1 to mitigate a release of radioactivity.

3.18.2 Inspections, Tests, Analyses, and Acceptance Criteria Table 3.18-2 contains the inspections, tests, and analyses for radiation monitoring of NuScale Power Modules 7 - 12.

Tier 1 3.18-1 Revision 4

NuScale Tier 1 Radiation Monitoring - NuScale Power Modules 7 - 12 Table 3.18-1: Radiation Monitoring - Automatic Actions For NuScale Power Modules 7 - 12 Variable Monitored Actuated Component(s) Component Action(s)

CFDS containment drain separator 1. CFDS containment drain separator gaseous discharge 1. Close gaseous discharge to Reactor isolation valve Building heating ventilation and air conditioning system BPDS 0B condensate polishing 1. South chemical waste water sump pump A 1. Stop system regeneration skid waste 2. South chemical waste water sump pump B 2. Stop effluent 3. South chemical water sump to BPDS collection tank flow 3. Close control valve

4. South chemical water sump to liquid radioactive waste 4. Close system (LWRS) isolation valve BPDS south turbine building floor 1. South waste water sump pump A 1. Stop drains 2. South waste water sump pump B 2. Stop
3. South waste water sump to BPDS collection tank flow 3. Close control valve
4. South waste water sump to liquid radioactive waste system 4. Close isolation valve Tier 1 3.18-2 Revision 4

NuScale Tier 1 Radiation Monitoring - NuScale Power Modules 7 - 12 Table 3.18-2: Radiation Monitoring Inspections, Tests, Analyses, and Acceptance Criteria For NuScale Power Modules 7 - 12 No. Design Commitment Inspections, Tests, Analyses Acceptance Criteria

1. The CFDS automatically responds to A test will be performed of the CFDS Upon initiation of a real or simulated the CFDS high-radiation signal listed in high-radiation signal listed in CFDS high-radiation signal listed in Table 3.18-1 to mitigate a release of Table 3.18-1. Table 3.18-1, the CFDS automatically radioactivity. aligns/actuates the identified components to the positions identified in the table.
2. The BPDS automatically responds to A test will be performed of the BPDS Upon initiation of the real or simulated the BPDS high-radiation signals listed high-radiation signals listed in BPDS high-radiation signals listed in in Table 3.18-1 to mitigate a release of Table 3.18-1. Table 3.18-1, the BPDS automatically radioactivity. aligns/actuates the identified components to the positions identified in the table.

Tier 1 3.18-3 Revision 4

NuScale Tier 1 Interface Requirements CHAPTER 4 INTERFACE REQUIREMENTS 4.0 Interface Requirements As noted in10 CFR 52.47(a)(25), identification of the interface requirements is to be met by those portions of the plant for which the application does not seek certification. Also, 10 CFR 52.47(a)(26) requires justification that compliance with the interface requirements be verifiable through inspection, testing (either in the plant or elsewhere), or analysis. The method to be used for verification of interface requirements must be included as part of the proposed Inspections, Tests, Analyses, and Acceptance Criteria required by 10 CFR 52.47 (b)(1).

In additiion, 10 CFR 52.79(d)(2) requires that if the combined license application references a standard design certification, then the Final Safety Analysis Report must demonstrate that the interface requirements established for the design under § 52.47 have been met.

This section provides the Tier 1 material for interface items. No Tier 1 information is provided for the conceptual design portions that are combined license applicant scope.

4.1 Site-Specific Structures Failure of any of the site-specific structures not within the scope of the NuScale Power Plant certified design will not cause any of the Seismic Category I structures within the scope of the NuScale Power Plant-certified design to fail.

Tier 1 4.0-1 Revision 4

NuScale Tier 1 Site Parameters CHAPTER 5 SITE PARAMETERS 5.0 Site Parameters The NuScale Power Plant design certification may be deployed over a wide variety of sites; therefore, it is necessary to specify a set of parameters that bound the site conditions that are suitable for NuScale Power Plant operation. A site for construction of a NuScale Power Plant is acceptable if the site-specific characteristics fall within the site parameter values specified in Table 5.0-1 and Figure 5.0-1 through Figure 5.0-4. In case of deviation from these parameters, justification may be provided that the proposed facility is acceptable at the proposed site.

Tier 1 5.0-1 Revision 4

NuScale Tier 1 Site Parameters Table 5.0-1: Site Parameters Site Characteristic Site Parameter Nearby Industrial, Transportation, and Military Facilities External hazards on plant structures, systems, and components (SSC) (e.g., explosions, fires, release of toxic chemicals and flammable clouds, pressure effects) on plant SSC No external hazards Aircraft hazards on plant SSC No design basis aircraft hazards Meteorology Maximum precipitation rate 19.4 inches per hour 6.3 inches for a 5 minute period Normal roof snow load 50 psf Extreme roof snow load 75 psf 100-year return period 3-second wind gust speed 145 mph (Exposure Category C) with an importance factor of 1.15 for Reactor Building, Control Building, and Radioactive Waste Building Design Basis Tornado maximum wind speed 230 mph translational speed 46 mph maximum rotational speed 184 mph radius of maximum rotational speed 150 ft pressure drop 1.2 psi rate of pressure drop 0.5 psi/sec Tornado missile spectra Table 2 of Regulatory Guide 1.76, Revision 1, Region 1.

Maximum wind speed design basis hurricane 290 mph Hurricane missile spectra Tables 1 and 2 of Regulatory Guide 1.221, Revision 0.

Zero percent exceedance value (historical limit excluding peaks <2 hours)

Maximum outdoor design dry bulb temperature 115°F Minimum outdoor design dry bulb temperature -40°F Accident release /Q values at exclusion area boundary and outer boundary of low population zone 0-2 hr 6.22E-04 s/m3 2-8 hr 5.27E-04 s/m3 8-24 hr 2.41E-04 s/m3 24-96 hr 2.51E-04 s/m3 96-720 hr 2.46E-04 s/m3 Accident release /Q values at main control room/

technical support center door and heating ventilation and air Door Heating Ventilation and Air Conditioning conditioning intake Intake 0-2 hr 6.50E-03 s/m3 6.50E-03 s/m3 2-8 hr 5.34E-03 s/m3 5.34E-03 s/m3 8-24 hr 2.32E-03 s/m3 2.32E-03 s/m3 1-4 day 2.37E-03 s/m3 2.37E-03 s/m3 4-30 day 2.14E-03 s/m3 2.14E-03 s/m3 Hydrologic Engineering Maximum flood elevation Probable maximum flood and coincident wind wave and other effects on maximum flood level 1 foot below the baseline plant elevation Maximum elevation of groundwater 2 feet below the baseline plant elevation Tier 1 5.0-2 Revision 4

NuScale Tier 1 Site Parameters Table 5.0-1: Site Parameters (Continued)

Site Characteristic Site Parameter Geology, Seismology, and Geotechnical Engineering Ground motion response spectra/safe shutdown earthquake See Figure 5.0-1 and Figure 5.0-2 for horizontal and vertical certified seismic design response spectra (CSDRS) for all Seismic Category I SSC.

See Figure 5.0-3 and Figure 5.0-4 for horizontal and vertical high frequency certified seismic design response spectra (CSDRS-HF) for Reactor Building and Control Building.

Fault displacement potential No fault displacement potential Minimum soil bearing capacity (Qult) beneath safety-related structures 75 ksf Lateral soil variability Uniform site (< 20 degree dip)

Minimum soil angle of internal friction 30 degrees Minimum shear wave velocity 1000 fps at bottom of foundation Maximum settlement for the Reactor Building, Control Building, and Radioactive Waste Building:

  • total settlement 4 inches
  • tilt settlement Maximum of 0.5 inch per 50 feet of building length or 1 inch total in any direction at any point in these structures
  • differential settlement (between Reactor Building and 0.5 inch Control Building, and Reactor Building and Radioactive Waste Building)

Slope failure potential No slope failure potential Tier 1 5.0-3 Revision 4

NuScale Tier 1 Site Parameters Figure 5.0-1: NuScale Horizontal Certified Seismic Design Response Spectra 5% Damping 10.00 CSDRS RG 1.60 @ 0.3g RG 1.60 @ 0.1g 1.00 Acceleration (g) 0.10 0.01 0.1 1.0 10.0 100.0 Frequency (Hz)

Tier 1 5.0-4 Revision 4

NuScale Tier 1 Site Parameters Figure 5.0-2: NuScale Vertical Certified Seismic Design Response Spectra 5% Damping 10.000 CSDRS RG 1.60 @ 0.3g RG 1.60 @ 0.1g 1.000 Acceleration (g) 0.100 0.010 0.1 1.0 10.0 100.0 Frequency (Hz)

Tier 1 5.0-5 Revision 4

NuScale Tier 1 Site Parameters Figure 5.0-3: NuScale Horizontal Certified Seismic Design Response Spectra - High Frequency 5% Damping 10.00 CSDRS CSDRS-HF 1.00 Acceleration (g) 0.10 0.01 0.1 1.0 10.0 100.0 Frequency (Hz)

Note: CSDRS-HF is evaluated for the RXB and CRB only Tier 1 5.0-6 Revision 4

NuScale Tier 1 Site Parameters Figure 5.0-4: NuScale Vertical Certified Seismic Design Response Spectra - High Frequency 5% Damping 10.000 CSDRS CSDRS-HF 1.000 Acceleration (g) 0.100 0.010 0.1 1.0 10.0 100.0 Frequency (Hz)

Note: CSDRS-HF is evaluated for the RXB and CRB only Tier 1 5.0-7 Revision 4

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