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ORNL-3529

MOLTEN-SALT REACTOR PROGRAM

SEMIANNUAL PROGRESS REPORT

For Period Ending July 31, 1963

SUMMARYiii

Part 1. MSRE DESIGN, ENGINEERING ANALYSIS, AND COMPONENT DEVELOPMENT

1. MSRE DESIGN, PROCUREMENT, AND CONSTRUCTION3

Status of Design3

Mechanical and Process Design3

Instrumentation and Control Design5

Status of Fabrication of Major Reactor Components9

Reactor Vessel and Control Rod Thimble Assembly9

Heat Exchanger9

Fuel and Coolant Pumps9

Radiator and Radiator Enclosure9

Salt Storage Tanks9

Freeze Flanges15

Major Procurement15

Moderator Graphite15

Salt Piping and Component Heating Equipment15

Remote Maintenance Equipment15

Reactor Auxiliary Systems15

Instrumentation Fabrication15

Fuel-Salt Sampler and Enricher16

Status of Construction16

Reactor Cell16

Fuel-Drain-Tank Cell16

Coolant Cell16

CPFF Construction21

Procurement and Installation of Instrumentation21

2. COMPONENT DEVELOPMENT23

Drain-Tank Cooler Test23

Heater Tests23

Drain-Tank Heater23

Pipe Heater with Reflective Insulation30

Control Rod30

Control Rod Prototype34

Helium Purification System34

Sampler-Enricher System Mockup35

Flange Disconnects37

Operational and Maintenance Valves38

Design38

Engineering Test Loop38

Treatment of Flush Salt with HF in ETL Drain Tank Following Oxide Additions38

Treatment of Fuel Salt with HF in ETL Drain Tank38

Loop Operation with Fuel Salt and Graphite40

Operation of the Graphite Container Access Joint40

Analysis for Chromium as an Indication of Corrosion41

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