SPECTRAL SHIFT CONTROL REACTOR--BASIC PHYSICS PROGRAM. Quarterly Technical Report No. 8, July-September 1962

Technical Report · Thu Oct 31 04:00:00 EST 1963

OSTI ID:4741713

Work performed on the Spectral Shift Control Reactor Basic Physics Program during the eighth contract quarter is summarized. Critical experiments were performed with aluminum-clad 2.46%-enriched UO/sub 2/ fuel rods in a lattice having a nonmoderator-to-moderator volume ratio (M/W) of 1.0. Moderator compositions were approximately 0, 50, and 70% D/sub 2/O in H/sub 2/O. Reported for each of the three cores are the critical size, dp/dh, bucitling and reflector savings, thermal disadvantage factor, and cadmium ratios of U/sup 235/ and U/sup 238/. Flux distributions across a gap caused by the removal of a row of fuel rods were measured in the 70% D/sub 2/O core. Erection and check-out of the Small Lattice Experiment facility were completed, and initial criticality was achieved. Anlsotropic scattering coefficients in the BPG code were reviewed. New coefficients, incorporating the latest data for oxygen and deuterium, are tabulated. Twodimensional calculations for the Small Lattice Experiments are summarized, and preliminary calculations for the next set of critical experiments (2.46%-enriched UO/sub 2/, M/W = 0.65) are given. (auth)

• Research Organization: Babcock and Wilcox Co. Lynchburg, Va.
• NSA Number: NSA-17-007627
• OSTI ID: 4741713
• Report Number(s): BAW-1262
• Country of Publication: United States
• Language: English

Related Subjects

ABSORPTION
ALUMINUM
BUCKLING
CADMIUM
CANNING
COMPUTERS
CONFIGURATION
CONTROL
CRITICALITY
CROSS SECTIONS
DEUTERIUM
DISTRIBUTION
ELASTIC SCATTERING
ENRICHMENT
FUEL ELEMENTS
HEAVY WATER MODERATOR
INTERACTIONS
MASS
MATHEMATICS
MEASURED VALUES
MULTIPLICATION FACTORS
NEUTRON FLUX
NUMERICALS
OXYGEN
PARTICLES
POWER PLANTS
PRODUCTION
PROGRAMMING
REACTIVITY
REACTOR CORE
REACTOR TECHNOLOGY
REFLECTORS
RODS
SCATTERING
SPECTRA
SPECTRAL SHIFT
SPIN
TABLES
URANIUM 235
URANIUM 238
URANIUM DIOXIDE
VARIATIONS
WATER MODERATOR
ZONES