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ORNL-3626

MOLTEN-SALT REACTOR PROGRAM

SEMIANNUAL PROGRESS REPORT

For Period Ending January 31, 1964

SUMMARYiii

INTRODUCTION1

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

1. MSRE DESIGN, PROCUREMENT, AND CONSTRUCTION5

Status of Design5

Mechanical and Process Design5

Instrumentation and Controls Design6

Status of Fabrication of Major Reactor Components9

Reactor Vessel and Control Rod Thimble Assembly9

Fuel and Coolant Pumps9

Radiator and Radiator Enclosure11

Salt Storage Tanks11

Freeze Flanges11

Major Procurement14

Salt Piping and Component Heating Equipment14

Remote Maintenance Equipment14

Reactor Auxiliary Systems14

Neutron Instrument Tube14

Instrumentation14

Status of Construction15

Reactor Cell15

Fuel Drain Tank Cell17

Coolant Drain Cell17

Radiator Cell and Penthouse17

Auxiliaries17

Leak Testing17

General Instrumentation19

Cost Plus Fixed Fee Construction19

Mechanical19

Electrical19

2. COMPONENT DEVELOPMENT23

Primary Heat23

Drain Tank Heater23

Pipe Heaters24

Drain Tank Cooler24

Modified Freeze Valves27

Reactor Drain Valve27

Control Rod Test29

Helium Purification System31

Engineering Test Loop32

Mockup of Sampler-Enricher System32

Sample Capsule32

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