ML21286A197

Amendment 29 to Updated Final Safety Analysis Report, Appendix C, Structural Qualification of Subsystems and Components, Table of Contents

ML21286A197
Person / Time
Site:	Browns Ferry
Issue date:	10/04/2021
From:	Tennessee Valley Authority
To:	Office of Nuclear Reactor Regulation
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BFN-29 C.0-i APPENDIX C STRUCTURAL QUALIFICATION OF SUBSYSTEMS AND COMPONENTS TABLE OF CONTENTS Introduction................................................................................................................................................. C.0-1 C.1 Scope............................................................................................................................................. C.0-1 C.2 Loading Conditions, Definitions, and Overview.............................................................................. C.0-1 C.2.1 Seismic Classification...................................................................................................... C.0-1 C.2.2 Loading Conditions.......................................................................................................... C.0-2 C.2.3 Definitions........................................................................................................................ C.0-3 C.2.4 Seismic Design Input....................................................................................................... C.0-4 C.2.5 Overview of Structural Qualification................................................................................. C.0-5 C.2.6 Safety Margins................................................................................................................. C.0-6 C.3 Piping and Pipe Supports............................................................................................................... C.0-8 C.3.1 Large Bore Piping............................................................................................................ C.0-9 C.3.2 Small Bore Piping............................................................................................................ C.0-11 C.3.3 Instrument Tubing............................................................................................................ C.0-13 C.3.4 Buried Piping................................................................................................................... C.0-14 C.3.5 Torus Attached Piping Systems....................................................................................... C.0-14 C.3.6 Pipe and Tubing Supports............................................................................................... C.0-18 C.3.7 Computer Programs for Class I Piping System Analysis................................................. C.0-22 C.4 Major Components......................................................................................................................... C.0-25 C.4.1 Reactor Pressure Vessel (RPV), RPV Internals, and Supports....................................... C.0-25 C.4.2 Primary System Components Stress Analysis................................................................. C.0-29 C.5 Primary Containment System and Penetrations............................................................................. C.0-29 C.5.1 Primary Containment Vessels Stress Analysis................................................................ C.0-30 C.5.2 Primary Containment Bellows Stress Analysis................................................................ C.0-31 C.5.3 Long Term Torus Integrity Program (LTTIP).................................................................... C.0-31 C.5.4 Wetwell/Drywell Vacuum Breakers.................................................................................. C.0-33 C.6 Equipment...................................................................................................................................... C.0-33 C.6.1 Equipment Seismic Loading (Historical).......................................................................... C.0-34 C.6.2 Equipment Seismic Analysis (Historical).......................................................................... C.0-35 C.6.3 Seismic Qualification of New Equipment and Replacements for Existing Equipment from March 1988 until July 2007.................................................................... C.0-36 C.6.4 Equipment Seismic/Structural Qualification (ESQ) after July 2007.................................. C.0-37 C.6.5 Qualification of Equipment in Torus Attached Piping Systems........................................ C.0-38 C.6.6 Interface Loads from Class I Piping Analysis................................................................... C.0-38 C.7 Heating, Ventilation, and Air Conditioning (HVAC) Ductwork and Supports................................... C.0-38 C.7.1 Scope.............................................................................................................................. C.0-39 C.7.2 Ductwork System Seismic Analysis................................................................................. C.0-39 C.7.3 Ductwork Load Combinations and Allowable Stresses.................................................... C.0-40

BFN-29 C.0-ii C.8 Control of Heavy Loads.................................................................................................................. C.0-42 C.8.1 Introduction/Licensing Background................................................................................. C.0-42 C.8.2 Safety Basis.................................................................................................................... C.0-44 C.8.3 Scope of Heavy Load Handling Systems........................................................................ C.0-44 C.8.4 Control of Heavy Loads Program.................................................................................... C.0-45 C.8.5 Safety Evaluation............................................................................................................ C.0-50 C.9 References..................................................................................................................................... C.0-51

BFN-29 C.0-iii APPENDIX C LIST OF TABLES Table Title C.2-1 Deformation Limit C.2-2 Primary Stress Limit C.2-3 Buckling Stability Limit C.2-4 Fatigue Limit C.3-1A Load Combinations and Allowable Stress Criteria for Class I Piping and Tubing (Piping other than RRS, MS, FW, and CRDH Systems)

C.3.1B Load Combinations and Allowable Stress Criteria of Class I Piping for Reactor Recirculation (RRS), Main Steam (MS), and Feedwater (FW)

Systems C.3.1C Load Combinations and Allowable Stress Criteria for Control Rod Drive Hydraulic Piping C.3-2 Load Combinations and Allowable Stresses for Class I Pipe and Tubing Supports C.4-1 Reactor Vessel, Reactor Vessel Internals, and Supports - Critical Load Combinations, Locations, and Allowables.

C.4-2 Primary System Components - Critical Load Combinations, Locations, and Allowables.

C.5-1 Drywell Loading Conditions and Allowable Stresses