Buckling of Light Water Lattices (.600" Diameter Rods, 1.3% and 1.15% 25)
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
Three methods are described for measuring the buckling of light-water lattices. In method 1, a sub-critical, cylindrical reactor lattice is placed in the neutron field of the Brookhaven reactor thermal column. The vertical relaxation length of the neutron-excited thermal neutron flux is then measured as a function of the loaded radius, and best values of buckling and reflector savings are found which fit the calculated functional dependence to the measured data. In the second procedure, that of the standard exponential experiment, buckling and reflector savings are determined from plots of the measured radial and axial variation of the thermal neutron flux, determined by foil exposure. Method 3 is essentially that of the critical assembly. Uranium is loaded in the presence of a Po-Be source until a keff of 0.99 is attained. The source is then removed, and the lattice is partly unloaded by steps. Foil counting methods and experimental procedures for obtaining relaxation lengths and radial traverses are explained. Tabulated buckling measurements are given for 1.15 and 1.3% enrichment factors at 4:1, 3:1, 2:1, 1.5:1 volume ratios.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP); US Atomic Energy Commission (AEC)
- DOE Contract Number:
- AT(30-2)-GEN-16
- NSA Number:
- NSA-10-003038
- OSTI ID:
- 4372640
- Report Number(s):
- BNL-1627
- Country of Publication:
- United States
- Language:
- English
Similar Records
Analysis of the Clean Bucklings of 1.3 Per Cent Enriched Uranium-Water Lattices
KINETIC AND BUCKLING MEASUREMENTS ON LATTICES OF SLIGHTLY ENRICHED URANIUM OR UO$sub 2$ RODS IN LIGHT WATER
Thermal Utilization, 1.3% Enriched, 0.600" Diameter Uranium Rods in Light Water
Technical Report
·
Sun Apr 05 23:00:00 EST 1953
·
OSTI ID:4363786
KINETIC AND BUCKLING MEASUREMENTS ON LATTICES OF SLIGHTLY ENRICHED URANIUM OR UO$sub 2$ RODS IN LIGHT WATER
Technical Report
·
Tue Dec 31 23:00:00 EST 1957
·
OSTI ID:4328549
Thermal Utilization, 1.3% Enriched, 0.600" Diameter Uranium Rods in Light Water
Technical Report
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Tue Jul 10 00:00:00 EDT 1956
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERYLLIUM
BUCKLING
Buckling
CRITICAL ASSEMBLIES
Critical Assemblies
Criticality
DIFFUSION LENGTH
ENRICHMENT
EXPONENTIAL PILES
Enrichment
FOILS
MEASURED VALUES
MULTIPLICATION FACTORS
NEUTRON FLUX
NEUTRON SOURCES
Nuclear Criticality Safety Program (NCSP)
POLONIUM
REFLECTORS
SLOWDOWN
SPHERES
Safety
Studies
THERMAL NEUTRONS
URANIUM
VOLUME
WATER
ZONES
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERYLLIUM
BUCKLING
Buckling
CRITICAL ASSEMBLIES
Critical Assemblies
Criticality
DIFFUSION LENGTH
ENRICHMENT
EXPONENTIAL PILES
Enrichment
FOILS
MEASURED VALUES
MULTIPLICATION FACTORS
NEUTRON FLUX
NEUTRON SOURCES
Nuclear Criticality Safety Program (NCSP)
POLONIUM
REFLECTORS
SLOWDOWN
SPHERES
Safety
Studies
THERMAL NEUTRONS
URANIUM
VOLUME
WATER
ZONES