Word: reactor
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Leslie Silverman, professor of Engineering and Environmental Hygiene, has been appointed chairman of the Atomic Energy Commission's advisory committee on reactor safeguards, an AEC spokesman announced recently. Silverman is director of the radiological hygiene program of the School of Public Health...
Largely a brainchild of Dr. Weinberg, the reactor HRE-2 (for Homogeneous Reactor Experiment No. 2) is an attempt to avoid some of the worst disadvantages of solid-fuel reactors. Since solid uranium is quickly corroded at high temperature, it must be enclosed in a more resistant metal such as zirconium or stainless steel. As the uranium fissions, it generates gases that tend to burst the container. Other fission products absorb neutrons, and when too much of this "poison" has accumulated, it makes the nuclear reaction slow down or stop. At intervals, the fuel elements must be removed and their...
...high-pressure fuel, which is fiercely radioactive as it comes from the spherical cell and cannot be handled or even observed except by special, remotely controlled devices. By ingenuity and careful engineering, Dr. Weinberg's staff managed to tame this lethal brew. His report proudly announced that "the reactor cell has been sealed with the circulating pumps running uninterruptedly for 1,600 hours (67 days), a feat which begins to approach the longest uninterrupted runs of any power reactor...
...effort: the roiling Belgian Congo has no university graduates capable of running an independent state. Belgium tried, but too late. It sank $9,000,000 into the Congo's five-year-old University of Lovanium near Leopoldville, a glittering campus that even boasts Africa's first nuclear reactor. But this year Lovanium (370 students) will graduate only a dozen Africans, and the newer University of Elisabethville (260 students) will produce even fewer...
...quartz, tungsten, zirconium. An electron gun fires beams that boost the temperature on the surface of the material up to 11,000° F. ; it can cut 100 holes in a straight line across a pinhead, drill a sapphire watch bearing in six seconds, weld a tough nu clear reactor core. Lease price: about $25,000 a year...