NUCLEAR ENGINEERING DEPARTMENT PROGRESS REPORT, MAY 1-AUGUST 31, 1961

Technical Report · Wed Oct 31 04:00:00 EST 1962

OSTI ID:4829433

Reynolds, J.H. ed.

Reactor Theory. Reactor physics studies of settled bed fuel reactors were obtained over the full density range of Na for the several reactor types under consideration. Design studies of reactor safety of the HFBR under meltdown conditions were completed. Studies of fuel storage configurations are continuing. Studies of high conversion ratio, Pu-fueled reactors are continuing. It is found that specific powers of up to 2 Mw (thermal)/kg Pu are obtainable with D/sub 2/O cooled rod clusters of low Pu content. The investigation of the radiation field in a polymerization vessel was completed. The systematic comparison of theory and experiment was extended to integral measurements of resonance capture in U-H/ sub 2/O lattices, to U/sup 238/U/sup 235/ fission ratios measured in Snell experiments, and in single rods in graphite. Theoretical calculations of the thermal diffusion length and diffusion cooling coefficient in water and disadvantage factors in water moderated slab lattices were compared with recent BNL experimental data. The detailed comparison of ihe anisotropic neutron spectrum in the CampbellPoole lattice was completed. Calculations of criticality in Be moderated experimental assemblies are continuing. More general work reported includes calculations of resonance capture in D/sub 2/O as well as H/sub 2/O cooled lattices, transport theory calculations of thermal diffusion anisotropy in slab lattices, fission product poisoning in fast reactors, Xe instability, neutron thermalization, and temperature coefficients of heterogeneous reactors, Experimental Reactor Physics. During this quarter work continued on the slightly enriched U and uranium oxide, light water moderated lattices. Additional pulsed-neutron and HFBR experiments were carried out. Measurements were performed on the 1.3% enriched slab lattice with a volume ratio of 1.5:1, the 3% enriched 1.5 : 1 uranium oxide lattice with poison, minature slab lattices of all volume ratios and miniature oxide lattices of various volume ratios.--Other topics included are Chemistry; Chemical Technology; Engineering; Hot Laboratory; Metallurgy; and Mechanical Engineering. (Abstract too long)

• Research Organization: Brookhaven National Lab., Upton, N.Y.
• DOE Contract Number: AT(30-2)-GEN-16
• NSA Number: NSA-16-020042
• OSTI ID: 4829433
• Report Number(s): BNL-696
• Country of Publication: United States
• Language: English

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