Calculations for ZPR-VII Uniform Lattice Critical Experiments with Thoria-Urania Fuel in Heavy Water

Technical Report · Sat Dec 01 00:00:00 EST 1962

DOI:https://doi.org/10.2172/4756147· OSTI ID:4756147

Pennington, E. M. ^[1]

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1. Argonne National Lab. (ANL), Argonne, IL (United States)

Calculations are reported relating to the uniform lattice critical experiments performed in the ZPR-VII critical assembly with both THUD or Babcock and Wilcox thoria-urania fuel and heavy water as moderator. Constants appearing in the criticality equation and material bucklings are computed for lattice pitches used. Reflector savings are calculated and used in conjunction with experimental critical dimensions to calculate geometric bucklings. Analyses are carried out for various experiments, such as measurements of U²³⁵ and thorium cadmium ratios, water worth, and fuel-substitution experiments. Theoretical and experimental values are compared whenever possible.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP); US Atomic Energy Commission (AEC)
• DOE Contract Number: W-31-109-ENG-38
• NSA Number: NSA-17-015384
• OSTI ID: 4756147
• Report Number(s): ANL-6661
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-63
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BUCKLING
CADMIUM
CADMIUM RATIO
CONFIGURATION
CRITICAL ASSEMBLIES
EPITHERMAL NEUTRONS
EQUATIONS
FUELS
HEAVY WATER MODERATOR
MEASURED VALUES
MIXING
NEUTRONS
REACTOR CORE
REFLECTORS
SPECTRA
THERMAL NEUTRONS
THORIUM 232
THORIUM OXIDES
URANIUM 235
URANIUM OXIDES
ZPR-7
Nuclear Criticality Safety Program (NCSP)
THUD
Bucklings
Critical Dimensions
Water Worth