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ORNL-2890

MOLTEN-SALT REACTOR PROGRAM

QUARTERLY PROGRESS REPORT

For Period Ending October 31, 1959

SUMMARYiii

PART 1. ENGINEERING AND COMPONENT DEVELOPMENT

1.1. COMPONENT DEVELOPMENT AND TESTING3

Molten-Salt-Lubricated Bearings for Fuel Pumps3

Hydrodynamic Journal Bearings3

Hydrodynamic Thrust Bearings5

Test of Pump Equipped with One Molten-Salt-Lubricated Journal Bearing5

Self-Welding of INOR-88

Friction Tests on INOR-88

Mechanical Seals for Pumps9

MF Performance Loop9

Frozen-Lead Pump Seal10

Remote Maintenance Demonstration Facility10

Design, Construction, and Operation of Materials-Testing Loops14

Forced-Circulation Corrosion Loops14

Graphite-Metal Seal Tests16

In-Pile Loop17

1.2. ENGINEERING RESEARCH19

Physical-Property Measurements19

Viscosity19

Enthalpy and Heat Capacity20

Thermal Expansion21

Heat-Transfer Studies23

PART 2. MATERIALS STUDIES

2.1. METALLURGY33

Graphite Brazing Studies33

Dynamic-Corrosion Studies35

Forced-Convection-Loops35

General Corrosion Studies43

Permeation of Graphite by Molten Salts43

Removal of Oxide Contaminants from Graphite44

Compatibility of INOR-8 and Graphite in Direct Contact45

Brazing-Material Evaluation in Fuel 13045

2.2. CHEMISTRY AND RADIATION EFFECTS49

Phase Equilibrium Studies49

The System BeF2-ThF4-UF449

The System BeF2-ThF449

The System NaF-BeF2-ThF449

Molten-Fluoride Solvents49

The Compound NaF-BeF2-3UF450

Gas Solubilities in Molten Fluorides52

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