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Nuclear News 40 Under 40 discuss the future of nuclear
Seven members of the inaugural Nuclear News 40 Under 40 came together on March 4 to discuss the current state of nuclear energy and what the future might hold for science, industry, and the public in terms of nuclear development.
To hear more insights from this talented group of young professionals, watch the “40 Under 40 Roundtable: Perspectives from Nuclear’s Rising Stars” on the ANS website.
L. Leibowitz, J. G. Schnizlein, L. W. Mishler
Nuclear Science and Engineering | Volume 15 | Number 4 | April 1963 | Pages 404-410
Technical Paper | doi.org/10.13182/NSE63-A26457
Articles are hosted by Taylor and Francis Online.
It has been found that the addition of several percent of any of a score of halogenated hydrocarbons to air in which uranium or zirconium foil is burning will markedly lower both the burning propagation velocity and the maximum burning temperature. For example, the addition of 2% CH3C1 will lower the burning propagation velocity of 0.013 × 0.3 cm uranium foil from 0.52 to 0.41 cm/sec; the maximum burning temperature is lowered from 1375 to 1225°C. The use of 2% CH3CHF2 prevented burning from progressing along the entire length of this foil. For combustion of 0.002 × 0.3 cm zirconium foil, CF2BrCF2Br, CF3Cl, and CF3Br were found to be effective inhibiting agents. Because of the flammability of CH3CHF2, measurements were made of the effect of several halogenated agents on the flammability limits of that compound. It was found for example, that a 1:1 mixture of CH3CHF2 and CF3Cl was nonflammable and effectively inhibited burning propagation of the uranium foil used in this study. Measurements with the uranium foil showed chlorine and bromine containing compounds to lower significantly the metal ignition temperature. That the halogenated agents may have opposite effects on ignition and steady combustion is a reflection of the difference in the controlling factors in the two cases.