Buckling of Graphite Moderated Lattices Containing Seven Rod Fuel Clusters

Technical Report · Wed Aug 01 00:00:00 EDT 1956

DOI:https://doi.org/10.2172/4347136· OSTI ID:4347136

Fillmore, F. L. ^[1]

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1. North American Aviation, Inc., Canoga Park, CA (United States). Atomics International Div.

Buckling and intracell flux measurements have been made on three graphite moderated exponential assemblies each having seven rod enriched uranium fuel clusters. Theoretical values of the buckling are calculated and compared to the experimental values. In evaluating the resonance escape probability, two values are used for the lethargy spread of resonance neutrons. The larger value of 5.6, which appears in most of the literature, compares less favorably with the experimental values than does the smaller value 2.6. The theoretical buckling compares favorably with experimental values for the two larger lattice spacings and is about 10 per cent low for the smallest lattice spacing.

• Research Organization: North American Aviation, Inc., Canoga Park, CA (United States). Atomics International Div.
• Sponsoring Organization: US Atomic Energy Commission (AEC); USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
• NSA Number: NSA-10-008662
• OSTI ID: 4347136
• Report Number(s): NAA-SR--1535
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
22 GENERAL STUDIES OF NUCLEAR REACTORS
BUCKLING
CONFIGURATION
ENERGY
EQUATIONS
EXPONENTIAL PILES
FUEL ELEMENTS
GRAPHITE MODERATOR
MEASURED VALUES
NEUTRON FLUX
NEUTRONS
Nuclear Criticality Safety Program (NCSP)
PHYSICS
RESONANCE ESCAPE PROBABILITY
RESONANCE NEUTRONS
RODS
URANIUM