LMFR BIMONTHLY PROGRESS REPORT FOR SEPTEMBER-OCTOBER 1958

Technical Report · Mon Dec 01 04:00:00 EST 1958

OSTI ID:4250665

The first LMFR exponential assembly was built and given the code number 18. Buckling for thc assembly determined from traverses is given. The distribution of Zr between the fused ternary eutectic and Bi-Mg-Zr alloys was redetermined. The data are tabulated. It was found that about 99.9% of the Po remains in the Bi when the latter is contacted with fused salt for stable fission product removal and with Zn for non-stable fission product removal. Vapor pressure measurements on BiI/sub 3/ show that no dissociation occurs at temperatures lower than about 536 C. Results of static corrosion tests indicate that 347 SS, low Cr steels, and 1020 mild steels are satisfactory for containing the NaCl-KClMgCl/sub 2/ ternary salt mixture. In absorption studies it was found that fission-product I volatilizes from the U-Bi fuel as a Bi-I compound. The solubility of Xe in Bi at 540 C was established at 3.2 x 10/sup -9/ moles/(cc)(atm). The solubility of Pd in Bi-Zn mixtures was obtained in which the Zn content was varied from 0.1 to 5%. Results of solubility tests for U and Y in Bi are reported. Results of experiments to determine the effect of additives in Bi on the contact angle between Bi and single crystals of fused ThO/ sub 2/ were inconclusive. Results indicate that only a monolayer of additive on the particle surface is required for dispersing ThO/sub 2/ in Bi. In slurry studies it was found that 1.5 wt.% ThO/sub 2/ dispersed in Bi will remain stable in day-long settling periods. A summary of loop SLC-1 operation is tabulated. In material studies weld corrosion was observed after about 13,000 hr in a Ti stabilized carbon steel. Gradual losses of Zr, U, and Mg continue in a nitrided Cr-Mo loop after 17,000 hr. Other information on the status of the various loops is tabulated. Progress in surfuce reaction studies is reported. ZrC films appear to grow more rapidly than ZrN films on carbon steel surfaces; C, Si, Mn, N, P, and S as alloying constituents many influence the susceptibility of steel to corrosion. (J.R.D.)

• Research Organization: Brookhaven National Lab., Upton, N.Y.
• NSA Number: NSA-13-014003
• OSTI ID: 4250665
• Report Number(s): BNL-4097
• Country of Publication: United States
• Language: English

Related Subjects

ABSORPTION-- BISMUTH ALLOYS-- BISMUTH IODIDES-- FISSION PRODUCTS-- IODINE-- LIQUID METAL FUEL-- LIQUID METALS-- URANIUM ALLOYS-- VOLATILITY
ADHESION-- CONTACT ANGLE-- CRYSTALS-- DISPERSIONS-- ELEMENTS-- FILMS-- LIQUID METALS-- MONOCRYSTALS-- QUANTITATIVE ANALYSIS-- SINGLE CRYSTALS-- SLURRIES-- STABILITY-- SURFACES-- THORIUM OXIDES-- TRACE AMOUNTS
BISMUTH ALLOYS-- EUTECTICS-- MAGNESIUM ALLOYS-- MELTING-- QUANTITATIVE ANALYSIS-- TABLES-- ZIRCONIUM-- ZIRCONIUM ALLOYS
BISMUTH ALLOYS-- LIQUID METALS-- PALLADIUM-- SOLUBILITY-- ZINC ALLOYS
BISMUTH IODIDES-- DECOMPOSITION-- MEASURED VALUES-- PRESSURE-- VAPORS
BISMUTH- - LIQUID METALS-- SOLUBILIT
REACTORS