ASME VVUQ 30.1 2024
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ASME VVUQ 30.1-2024 Scaling Methodologies for Nuclear Power Systems Responses
| Published By | Publication Date | Number of Pages |
| ASME | 2024 |
This Standard is focused on the scaling analysis that is used to evaluate the effects of differences (e.g., distortions) in the phenomenological behavior of experimental facilities compared to the phenomenological behavior of the real-world system. This includes scaling analysis methodologies for supporting the design of facilities and experiments capable of generating data that characterize the phenomena present in an entire system [such facilities are known as integral effects test (IET) facilities] and in components of the system (e.g., the nuclear core or the steam generator)[such facilities are known as separate effects test (SET) facilities].
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | CONTENTS |
| 6 | Foreword |
| 7 | ASME VVUQ Committee Roster |
| 8 | CORRESPONDENCE WITH THE VVUQ COMMITTEE |
| 10 | 1 PURPOSE, SCOPE, INTRODUCTION, AND NOMENCLATURE 1.1 Purpose 1.2 Scope |
| 11 | 1.3 Introduction Figures Figure 1.3-1 Determination of Model Adequacy |
| 12 | 1.4 Nomenclature |
| 16 | 2 CREATION OF THE ADEQUACY MATRIX AND VALIDATION MATRIX USING SCALED EXPERIMENTAL FACILITIES |
| 17 | 3 SCALING HISTORY AND TYPES 3.1 General Figure 2-1 Process for Creating Assessment Base for Licensing Purposes: Flowchart |
| 18 | 3.2 Volumetric Scaling Approach |
| 19 | 4 OVERVIEW AND COMPARISON OF H2TS AND FSA SYSTEM DECOMPOSITION AND HIERARCHY |
| 20 | Figure 3.2-1 Comparison of Elongated Representations of Volumes in LOFT and Semiscale Mod-2A Test Facilities |
| 21 | Figure 4-1 System Decomposition and Hierarchy for Processes Applied in H2TS |
| 22 | Figure 4-2 Four Stages of H2TS |
| 23 | 5 CONCEPT OF TIME–SCALE MODELING — DIMENSIONLESS GROUPS IN TERMS OF TIME RATIOS 5.1 Introduction |
| 24 | 5.2 Scale Identification 5.3 Top-Down Approach — Scaling Hierarchy |
| 25 | Figure 5.2-1 Subvolumes, Vi, and Control Volume, V |
| 27 | 5.4 Combination of H2TS and FSA Approaches |
| 28 | 5.5 Bottom-Up Approach 5.6 Two-Tiered Approach Figure 5.3.2-1 Changes of System Matrix for FSA During the Duration of NPP Transient |
| 29 | MANDATORY APPENDIX I REFERENCES |
| 31 | NONMANDATORY APPENDIX A EXAMPLES OF EQUATIONS AND DIMENSIONLESS GROUPS USED FOR SCALING ANALYSIS A-1 THE DIMENSIONLESS GROUPS IN H2TS |
| 32 | Figure A-1.1-1 Control Volume, Transfer Area, Surface and Volume Effects, and State Variable Tables Table A-1.1-1 Examples of Derivations of H2TS Dimensionless Groups (Time Ratios) |
| 34 | A-2 THE DIMENSIONLESS GROUPS IN FSA |
| 35 | Table A-2-1 State Variables, Agents of Change, FRCs, and Fractional Changes (Effect Metrics) |
| 36 | A-3 REACTOR VESSEL PRESSURE RESPONSE |
| 37 | Table A-3-1 Definition of Dimensionless Agents of Change and Fractional Rates of Change for Pressure Response Equation |
| 38 | Figure A-3-1 PWR Vessel Pressure Responses for Various Test Facilities in Dimensional Form Figure A-3-2 PWR Vessel Pressure Responses for Various Test Facilities in Dimensionless Form |
| 39 | A-4 REACTOR VESSEL WATER LEVEL RESPONSE A-5 PEAK CLADDING TEMPERATURE |
| 40 | Table A-4-1 Definition of Dimensionless Agents of Change and Fractional Rates of Change for Void Fractions Equation |
| 43 | Table A-5.1-1 Definition of Fractional Rates of Change and Fractional Change Metric for Peak Cladding Temperature Equation |
| 45 | Figure A-5.2-1 Dimensionless Temperature and Its Relationship to Biot Number and the Decay Fractional Change Metric |
| 46 | Figure A-5.2-2 Normalized PCT for 0.015 < ΠBi < 0.03 |
