QUARTERLY PROGRESS REPORT FOR FEBRUARY 16-MAY 15, 1954
Technical Report
·
OSTI ID:4171699
Buckling measurements with 0.600-in. fuel reds in clean water were completed for U enrichments of 1.3, 1.15, and 1.0%. Water-to-U volume ratios of 1, 1.5, 2, 3, and 4 to 1 were used. Values of B/sup 2/ = +0.26 plus or minus 19 x 10/sup -4//cm/sup 2/ and k = 1.0009 plus or minus 0.0006 were obtained from a lattice of natural U rods in H/sub 2/O at a volume ratio of 1.5: 1. A proposed shim control system for the LMFR is described which will maintain continuous control of the fuel concentration. In a test of the "torch" precess for removing Pa and U from ThF/sub 4/ blankets by the fluorination of contaminants in a H/sub 2/-- F/sub 2/ flame, 77% of the original feed lost 72% of its original activity. A method using fused salts was less successful. It was found that 92 to 95% of mixed fission prcduct activity in molten NaNO/sub 3/ was scavenged out by a suspension of metallic oxides such as Mn and Fe. Isothermal studies of Th/sub 3/Bi/sub 5/ in liquid Bi and a liquid Pb--Bi eutectic showed that after 2000 hr, the compound particles grow larger in Bi, but thermal cyc~g tests with the same dispersions indicated that the particles grow larger in Pb-- Bi. Static corrosion tests of B and W alloy 701 and chromized Croloy 2 1/4 showed no corrosion in Bi or U--Bi. Wetting experiments revealed that pure Fe can be wetted by heating to 1600 deg F under high vacuum and immersing in Bi at 725 C for 5 hr. Additional data are presented on the erosion of grapbite by Th--Bi, the solubility of Fe and Zr in Bi, the adsorption of Zr on Fe from liquid Bi, the radiation daraage of SiO/sub 2/, and the thermal cycling of U. The transmission of neutrons through an air slot was investigated as a function of slot dimensions. Parameters of several neutron reso- . nance levels in U/sup 238/ were obtatined. (For preceding pericd see BNL-285.) (C.J.G.)
- Research Organization:
- Brookhaven National Lab., Upton, N.Y.
- NSA Number:
- NSA-14-018613
- OSTI ID:
- 4171699
- Report Number(s):
- BNL-297
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ADSORPTION-- NEUTRONS-- RESONANCE ESCAPE PROBABILITY-- SHIELDING-- SILICON OXIDES-- URANIUM-- URANIUM 238- - ZIRCONIUM
BISMUTH-- BISMUTH COMPOUNDS-- CHROMIUM ALLOYS-- CORROSION-- CROLOY-- EROSION-- EUTECTICS-- GRAPHITE-- HEAT TREATMENTS-- HIGH TEMPERATURE-- IRON OXIDES-- LEAD-- LIQUID METAL FUEL-- MANGANESE OXIDES-- RADIATION EFFECTS-- SOLUBILITY-- SOLUTIONS-- STEELS-- SUSPENSIONS-- THORIUM-- THORIUM COMPOUNDS-- VACUUM
BUCKLING-- CHEMICAL REACTIONS-- CONTROL SYSTEMS-- ENRICHMENT-- FLUORINE-- FUEL ELEMENTS-- FUELS-- FUSED SALTS-- HYDROGEN-- LMFR-- MEASURED VALUES-- MULTIPLICATION FACTORS-- NATURAL URANIUM FUEL-- PROTACTINIUM-- QUANTITY RATIO
REACTOR TECHNOLOGY
BISMUTH-- BISMUTH COMPOUNDS-- CHROMIUM ALLOYS-- CORROSION-- CROLOY-- EROSION-- EUTECTICS-- GRAPHITE-- HEAT TREATMENTS-- HIGH TEMPERATURE-- IRON OXIDES-- LEAD-- LIQUID METAL FUEL-- MANGANESE OXIDES-- RADIATION EFFECTS-- SOLUBILITY-- SOLUTIONS-- STEELS-- SUSPENSIONS-- THORIUM-- THORIUM COMPOUNDS-- VACUUM
BUCKLING-- CHEMICAL REACTIONS-- CONTROL SYSTEMS-- ENRICHMENT-- FLUORINE-- FUEL ELEMENTS-- FUELS-- FUSED SALTS-- HYDROGEN-- LMFR-- MEASURED VALUES-- MULTIPLICATION FACTORS-- NATURAL URANIUM FUEL-- PROTACTINIUM-- QUANTITY RATIO
REACTOR TECHNOLOGY