No abstract

No abstract

2.1 INTRODUCTION , 3 2.2 CELL BURNUP CALCULATIONS 4 2.3 AIMS OF THE PRESENT STUDY 6 2.4 (CM)FMSR DESIGN AND CALCULATIONS 8 2.4.1 Reactor Configuration 8 2.4.2 Startup Core Calculations 10 2.4.3 Fuel Management Strategy 14 2.4.4 Results of Burnup Calculations 20 2.4.5 Reactivity Coefficients 24 2.4.6 Reactor Control During Burnup Cycles. ........ 29 2.4.7 Thermal-Hydraulic Calculations 29 2.5 URANIUM RESOURCE REQUIREMENTS 31 3. THE EXTENDED FUEL CYCLE FMSR [(EC)FMSR] CONCEPT-PHYSICS ANALYSIS 33 3.1 INTRODUCTION 33 3.2 (EC)FMSR DESIGN CONSIDERATIONS «. 36 3.3 CALCULATION METHODS 39 3.3.1 Cross-Section Generation 39 3.3.2 Hexagonal and R-Z Models of the (EC)FHSR Core .... 44 3.4 RESULTS OF THE (EC)FMSR PHYSICS ANALYSES 49 3.4.1 Reactivity Swing and Plutonium Concentrations During the Fuel Cycle 49 iii-TABLE OF CONTENTS (cont'd) Page 3.4.2 Power Shape anu Power Swing. 51 3.4.3 Burnup and Fast Fluence Damage 55 3.4.4 Reactivity Coefficients 55 3.4.5 Radial and Axial Blankets 64 3.4.6 Reactivity Control Systems 64 4. THERMAL-HYDRAULIC ANALYSIS OF THE (EC)FMSR 78 4.1 GENERAL DESIGN CONSIDERATIONS ... 78 4.2 METHOD OF CALCULATION 78 4.3 THERMAL-HYDRAULIC PERFORMANCE 79 5. (EC)FMSR FUEL CYCLE COST ANALYSIS 83 5.1 INTRODUCTION. 83 5.2 FUEL CYCLE COST MODEL AND THE ECONOMIC ENVIRONMENT 83 5.3 RESULTS AND CONCLUSIONS 88 6. THE 30-YEAR (EC)FMSR 94 6,1 PRELIMINARY RESULTS OF THE 30-YEAR (EC)FMSR 94 7. CONCLUSIONS AND RECOMMENDATIONS 102 7.1 CONCLUSIONS 102 7.2 RECOMMENDATIONS 103 LIST OF TABLES (cont'd) Table Page 3.16 Control Rod Reactivity Worths 72 4.1 Summary of Core Fuel Thermal Hydraulics for the (EC)FMSR.. 80 4.2 Thermal-Hydraulic Results for Average Pin at Nominal Conditions in Zone 1 of (EC)FMSR 82 4.3 Thermal-Hydraulic Results for the Hot Pin in Zone 1 of the (EC)FMSR 84 5.1 Unit Cost and Financial Parameters Used in the Fuel Cycle Cost Calculations 86 5.2 Unit Cost of Fissile Plutonium Based on the Recovery Costs from PWR Spent Fuel 87 5.3 Cash Flow Associated with Core and Blanket Fuel Assemblies of (EC)FMSR 89 5.4 Cash Flow Associated with Core and Blanket Fuel Assemblies of a Homogeneous LMFBR (1200 MW(e)) 91 5.5 Cash Flow Associated with Core and Blanket Fuel Assemblies of a Heterogeneous LMFBR (1000 HW(e) Core) 92 5.6 Comparison Between the Levelized Fuel Cycle Cost of the (EC)FHSR and a Homogeneous and Heterogeneous LMFBR 93 6.1 Comparison Between 10-and 30-Year (EC)FMSR Cores 95 6.2 30-Year FMSR Performance 98 6.3 Cash Flow Associated with Core and Blanket Fuel Assemblies of the 30-Year FMSR 99 6.4 Comparison Between the Levelized Fuel Cycle Cost of the 10and 20-Year FMSR and a Heterogeneous LMFBR 100 6.5 Advantages and Disadvantages of the 30-Year FMSR Design. . 100-vi-LIST OF FIGURES Figure Page 2.1 Variation of K e ff and Breeding Ratio with Peak Cell Burnup , 7 2.2 Schematic View of the Centrally-Moderated FMSR in the X-Y Plane 9 2.3 Reactor Layout in the X-Y Plane for the (CM)FMSR 12 2.4 Schematic R-Z Representation of the (CM)FMSR 13 2.5 Neutron Energy Spectra at the Beginning)f Reactor Life for the (CM...