Survey of the Static Nuclear Characteristics of Small One-Region Slurry Reactors: Part III

Technical Report · Mon Dec 08 04:00:00 EST 1958

DOI:https://doi.org/10.2172/4295369· OSTI ID:4295369

Prince, B. E. ^[1]; Lietzke, M. P. ^[1]

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1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

A summary is given of computed criticality parameters for U²³⁵ fueled, spherical ThO₂-H₂-D₂O reactors smaller than 3 ft in diameter and moderated with H₂-D₂O mixtures above 20% in H₂. Thorium concentrations were varied between 200 and 1000 g/liter, and the temperature range was 20 to 200°C. The parameters calculated were critical uranium-to-thorium ratios and the reactivity coefficients of temperature, void, and slurry concentration. As a typical example, a 2.5-ft reactor, moderated with an 80% D₂O-20% H₂O mixture, has a minimum critical mass ratio and a maximum critical temperature at about 500 g Th/liter. These values were about 0.08 g U/sup 235//g Th and 200°C, respectively.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP); US Atomic Energy Commission (AEC)
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-13-005124
• OSTI ID: 4295369
• Report Number(s): CF-58-12-15
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CONFIGURATION
CRITICALITY
Criticality
DENSITY
Density
EFFICIENCY
ENRICHMENT
EQUATIONS
Efficiency
FUEL SLURRIES
HEAVY WATER MODERATOR
HIGH TEMPERATURE
HOMOGENEOUS REACTORS
Heavy Water Moderator
MASS
MODERATORS
MULTIPLICATION FACTORS
NUMERICALS
Nuclear Criticality Safety Program (NCSP)
Parameters
REACTIVITY
REACTOR CORE
REACTORS
RESONANCE ESCAPE PROBABILITY
Ratios
SPHERES
Safety
TEMPERATURE
THERMAL UTILIZATION
THORIUM
THORIUM OXIDES
Thorium
URANIUM
URANIUM 235
Uranium
VARIATIONS
VOLUME
WATER MODERATOR