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ORNL-3014

MOLTEN-SALT REACTOR PROGRAM

QUARTERLY PROGRESS REPORT

For Period Ending July 31, 1960

SUMMARYiii

PART I. MSRE DESIGN, COMPONENT DEVELOPMENT, AND ENGINEERING ANALYSIS

1. MSRE DESIGN1

1.1 Introduction1

1.2 MSRE Objectives2

1.3 Conceptual Designs2

1.4 The Reactor Core and Vessel4

1.5 The Primary Heat Exchanger8

1.6 Radiator10

1.7 Drain Tanks11

1.8 Equipment Arrangement12

1.9 Design of Cover-Gas System18

1.10 Design of the Remote-Maintenance System for MSRE19

1.11 Modifications to Building 750322

2. COMPONENT DEVELOPMENT24

2.1 Freeze Flange Development24

2.2 Freeze Valves25

2.3 Sampler-Enricher Development25

2.4 MSRE Core Development27

2.5 Remote Maintenance Development Facility27

2.6 Forced-Circulation Corrosion Loops28

2.7 Pump Development29

2.7.1 MSRE Primary Pump29

2.7.2 MSRE Secondary Pump30

2.7.3 Advanced Molten-Salt Pumps30

2.7.4 MF-F Pump Performance Loop31

2.7.5 Frozen-Lead Pump Seal31

2.7.6 MSRE Engineering Test Loop31

3. REACTOR ENGINEERING ANALYSIS32

3.1 Effects of Graphite Shrinkage Under Radiation in the MSRE Core32

3.2 Temperature-Rise Effects in MSRE Cores with Round and Flat Fuel Channels34

3.3 Temperature of Fuel in a Blocked Passage in the MSRE39

3.4 MSRE Reactor Physics41

3.4.1 Core Calculations41

3.4.2 Gamma-Heating Calculations44

3.4.3 Drain Tank Criticality44

3.4.4 Pump-Bowl Fission-Product Activities45

3.4.5 Cell Calculations45

3.5 Analog Computer Study of MSRE Primary-System Flow Loss45

3.5.1 Description of the System Simulated46

3.5.2 Analog Computer Program48

3.5.3 Simulator Operation49

3.5.4 Conditions Used to Obtain Curves49

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