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ORNL-2474

MOLTEN-SALT REACTOR PROGRAM

QUARTERLY PROGRESS REPORT

For Period Ending January 31, 1958

SUMMARY1

PART 1. REACTOR DESIGN STUDIES

1.1. REACTOR DESIGN9

Study Layouts of Reactor System9

Nuclear Calculations12

Univac-Ocusol Reactor Calculations12

Oracle Calculations14

IBM-704 Codes15

Fuel Fill-and-Drain System Design15

Design of a Hydrostatic Bearing for a Molten Salt Pump Impeller16

1.2. COMPONENT DEVELOPMENT AND TESTING18

Fuel Pump Design and Development18

Pump Design Studies18

Development Tests of Salt-Lubricated Bearings18

Development Tests of Mechanical Shaft Seals19

Development Tests of Oil-Lubricated Bearings20

Irradiation and Endurance Tests of Bearings and Seals20

Development of Techniques for Remote Maintenance of the Reactor System20

Mechanical Joint Development20

Remote Manipulation Techniques24

Heater-Insulation Units for Remote Application25

Maintenance Demonstration Facility26

Heat Exchanger Development27

Design, Construction, and Operation of Materials Testing Loops27

Forced-Circulation Loops27

In-Pile Loops32

1.3. ENGINEERING RESEARCH35

Hydrodynamic Studies of MSR Core35

Physical Property Measurements37

Molten Salt Heat Transfer Studies37

1.4. ADVANCED REACTOR STUDIES41

A Molten Salt Natural-Convection Reactor41

Salt-Cooled Heat Exchangers42

Helium-Cooled Heat Exchangers for Steam Cycle42

Helium-Cooled Heat Exchanger for Gas-Turbine Cycle43

Comparison of the Various Cooling Systems44

Comparison of Natural-Convection System with Forced-Convection System44

High-Flux Reactors44

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