ORNL-4396: Feb 1969 Progress Report

ORNL-4396
MOLTEN-SALT REACTOR PROGRAM
SEMIANNUAL PROGRESS REPORT
For Period Ending February 28, 1969
PART 1. MOLTEN-SALT REACTOR EXPERIMENT

  1. MSRE OPERATIONS
        1.1 Chronological Account of Operations and Maintenance
        1.2 233U Zero-Power Tests
        1.3 Operations Analysis
                 1.4 Equipment
  2. COMPONENT DEVELOPMENT
        2.1 Freeze-Flange Thermal-Cycle Test
        2.2 Pumps
        2.2.1 Mark 2 Fuel Pump
                 2.2.2 Oil Pump Endurance Test
  3. INSTRUMENTATION AND CONTROLS
        3.1 MSRE Operating Experience
        3.2 Controls System Design
                 3.3 MSRE Computer System
  4. MSRE REACTOR ANALYSIS
        4.1 Long-Term Isotopic Changes and Reactivity Effects During Operation with 233U
        4.2 Analysis of Zero Power Rod-Calibration Experiments
        4.3 Calculations of Reactivity Variations from Power-Time Records
                 4.4 Theoretical Analysis of Dynamics with 233U Fuel

PART 2. MSBR DESIGN AND DEVELOPMENT

    1. DESIGN
          5.1 General
          5.2 Plant Layout
          5.3 Reactor
          5.4 Primary Heat Exchangers
          5.5 Steam Generator and Superheater
          5.6 Steam Reheater
          5.7 Removal of Reactor Afterheat
          5.8 Distribution of Noble-Metal Fission Products and Their Decay Heat
          5.9 Reactor Temperatures, Flows, and Heat Transfer
          5.10 Estimated Costs of 1000 MWe MSBR Power Station
                   5.11 MSBE Design
    2. REACTOR PHYSICS
          6.1 Physics Analysis of MSBR
          6.2 Physics Analysis of MSBE
                  6.3 MSBR Experimental Physics
    3. SYSTEMS AND COMPONENTS DEVELOPMENT
          7.1 Off-Gas System
          7.2 Noble-Gas Migration in the MSBR
          7.3 Bubble Generator
          7.4 Bubble Separator
          7.5 Molten-Salt Steam Generator Test Stand
          7.6 Sodium Fluoroborate Circulating Test Loop
          7.7 MSBR Pumps
                  7.8 Remote Welding
    4. MSBR INSTRUMENTATION AND CONTROLS
          8.1 Control System Analysis
          8.2 Calculations of Neutron Decay After Shutdown
          8.3 Dynamic Analysis of MSBR Steam Generator
                  8.4 High-Temperature Resistance Thermometer Evaluation
    5. HEAT TRANSFER AND THERMOPHYSICAL PROPERTIES
          9.1 Heat Transfer
          9.2 Thermophysical Properties
                   9.3 Mass Transfer to Circulating Bubbles

PART 3. CHEMISTRY

    1. CHEMISTRY OF THE MSRE
          10.1 A Material Balance for the MSRE Fuel Salt
          10.2 MSRE Fuel Circuit Corrosion Chemistry
          10.3 Adjustment of U3+/sigmaU Concentration of the MSRE Fuel Salt
          10.4 Examination of Simulated MSRE Fuel Mixture for Foam-Producing Properties
                   10.5 Foaming Behavior in Molten Salts
    2. FISSION PRODUCT BEHAVIOR
          11.1 Fission Product Behavior in the MSRE
          11.2 Fission Product Volatilization Tests
          11.3 Laboratory Tests on Aerosol Formation Over Molten Salts and Transfer of
          Niobium from Salt to Bismuth
                   11.4 The Chemistry of the Noble Fission Product Fluorides
    3. PHYSICAL CHEMISTRY OF MOLTEN SALTS
          12.1 CeF3 Solubility in Molten Mixtures of LiF, BeF2, and ThF4
          12.2 Correlation of CeF3 Solubility with Solvent Composition
          12.3 Zone Melting of Fluoride Salts
          12.4 Behavior of CeF3 in the Fractional Crystallization of ThF4 from LiF-BeF2 -ThF4 Melts
          12.5 Properties of the Alkali Fluoroborates
          12.6 Limits of Miscibility in Molten Salt Systems: KBF4-LiF, Li2BeF4-KI, and Li2BeF4-KBF4
          12.7 Solubility of Thorium Metal in Molten Lithium Fluoride-Thorium Fluoride Mixtures
          12.8 The Crystal Structure of KBF4
          12.9 Densities of Molten Salts
          12.10 Spectroscopy of Fluoride Media
          12.11 The Distribution of U4+ Between Molten LiF-BeF2 ThF4-UF4
          and a (U-Th)O2 Solid Solution
          12.12 An Ni-NiO-BeO Electrode as a Reference Electrode in Molten Fluorides
          12.13 Emf Measurements with Concentration Cells with Transference in Molten
          Mixtures of LiF and BeF2
          12.14 Electrical Conductance of Molten KNO3
                  12.15 Electrical Conductance of Molten Beryllium Fluoride
    4. CHEMISTRY OF MOLTEN-SALT REACTOR FUEL REPROCESSING TECHNOLOGY
          13.1 Simultaneous Extraction of Zirconium and Uranium and of Zirconium and Protactinium
          13.2 Protactinium Studies in the High Alpha Molten-Salt Laboratory
          13.3 Further Studies of the Reductive Extraction of Protactinium from Single-Fluid MSBR Fuel Salt by Thorium in Molten Bismuth
          13.4 Reductive Extraction of Rare Earths from Molten Mixtures of LiF, BeF2, and ThF4 into Bismuth
          13.5 Metal Phases Other than Bismuth for Rare-Earth Extraction
          13.6 Separation of Cerium from Thorium in Bismuth by Cold Zone Deposition of
          Thorium Bismuthide
                   13.7 Extraction of Thorium by Electrolytic Reduction into Flowing Liquid Lead from Molten Mixtures of LiF, BeF2, ThF4, and Rare-Earth Fluorides
    5. DEVELOPMENT AND EVALUATION OF ANALYTICAL METHODS FOR MOLTEN-SALT REACTORS
          14.1 Determination of Oxide in MSRE Fuel
          14.2 Determination of the Oxidation State of Constituents of MSRE Fuel
          14.3 Emf, Voltammetric, and Spectrophotometric Measurements on the
          U(IV)/U(III) Couple in Molten LiF-BeF2 -ZrF4
          14.4 Emf Measurements in Molten Fluorides
          14.5 Development of a Molten-Salt Spectrophotometric Facility for Hot-Cell Use
          14.6 Absorption Spectra of 3d Transition-Metal Ions in Molten LiF-BeF2
          14.7 Effect of Reductants on Metal-Fluoride-Salt Wetting Behavior
          14.8 Determination of Contaminants in the Blanket Gas of NaBF4 Tests
                  14.9 Determination of Bismuth in MSRP Salts

PART 4. MOLTEN-SALT IRRADIATION EXPERIMENTS

    1. MOLTEN-SALT CONVECTION LOOP IN ORR
                   15.1 Studies of Surface Wetting of Graphite by Molten Salt

PART 5. MATERIALS DEVELOPMENT

    1. MSRE SURVEILLANCE PROGRAM
                    16.1 Examination of Particles Removed from Pump Bowl with Magnets
    2. GRAPHITE STUDIES
          17.1 Fundamental Studies of Radiation Damage Mechanisms in Graphite
          17.2 Graphitization Chemistry and Binder System Development
          17.3 Hot Pressing of Graphite Pellets Using Various Binders
          17.4 Procurement and Physical Property Measurements on New Grades of Graphite
          17.5 Physical Properties of Graphites
          17.6 X-Ray Studies
          17.7 Electron Microscopy of Graphite
          17.8 Gas Impregnation of Graphite with Carbon
          17.9 Graphite Irradiation in HFIR
                   17.10 Calculation of Lifetime and Induced Stresses in MSBR Cores
    3. HASTELLOY N
          18.1 Influence of Titanium and Carbon on the Mechanical Properties of Nickel-Base Alloys
          18.2 Aging of Modified Hastelloy N
          18.3 Influence of Irradiation Temperature on the Creep-Rupture Properties of Hastelloy N
          18.4 Electron Microscopy Studies
          18.5 Measurement of Residual Stresses in Hastelloy N Welds
          18.6 Corrosion Studies
          18.7 Forced Convection Loop
                  18.8 Oxidation of Hastelloy N
    4. SUPPORT FOR CHEMICAL PROCESSING
          19.1 Graphite-Hastelloy N Transition Joint Development
          19.2 Development of Corrosion-Resistant Brazing Alloys for Molybdenum
          19.3 Examination of Mo-TZM Capsule
                  19.4 Bismuth Corrosion Studies
    5. SUPPORT FOR COMPONENTS DEVELOPMENT PROGRAM
          20.1 Remote Welding Development
                   20.2 Thermal Cycling Tests on Coated Bearing Specimens

PART 6. MOLTEN-SALT PROCESSING AND PREPARATION

  1. FLOWSHEET ANALYSIS
        21.1 Proposed Reductive Extraction Processing Flowsheet for a Single-Fluid MSBR
        21.2 Protactinium Removal from a Single-Fluid MSBR
        21.3 Removal of Rare Earths from a Single-Fluid MSBR
               21.4 Material Balance Calculations
  2. MEASUREMENT OF DISTRIBUTION COEFFICIENTS IN MOLTEN-SALT-METAL SYSTEMS
        22.1 Extraction of Uranium, Zirconium, Protactinium, and Plutonium from
        Single-Fluid MSBR Fuels
        22.2 Solubility of Protactinium in Bismuth
        22.3 Extraction of Thorium and Rare Earths from Single-Fluid MSBR Fuels
        22.4 Metal Transfer Process Studies
                 22.5 Effect of Other Components on the Solubility of Thorium in Bismuth
  3. ENGINEERING DEVELOPMENT OF PROCESS OPERATIONS
        23.1 Electrolytic Cell Development
        23.2 Reductive Extraction Engineering Studies
        23.3 Simulated Molten-Salt-Liquid-Bismuth Contactor Studies
        23.4 Design of a Continuous Electrolytic Cell Testing System
                23.5 Experimental Facilities for Reductive Extraction Development Work
  4. DISTILLATION OF MSRE FUEL CARRIER SALT

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