½ñÈÕ³Ô¹Ï

Eliot Circular

Nuclear Scrounge

Fork in hand, ½ñÈÕ³Ô¹Ï intercepts 3 kg of uranium that University of Arizona no longer wanted.

By Anna Mann
½ñÈÕ³Ô¹Ï reactor

½ñÈճԹϒs reactor glows with pride after scrounging almost 3 kg of uranium from the University of Arizona

For the first time in more than 40 years, the ½ñÈÕ³Ô¹Ï reactor has received a fresh shipment of Uranium 235 to augment its dwindling supply. Fittingly, ½ñÈÕ³Ô¹Ï managed to obtain the fuel through a time-honored technique—scrounging.

Some time ago, ½ñÈÕ³Ô¹Ï reactor director Stephen Frantz learned that the University of Arizona was shutting down its reactor and planning to ship roughly three kilograms of fuel to a federal storage depository. Although the Arizona fuel rods were somewhat depleted, Frantz knew they were still sufficiently radioactive to allow ½ñÈÕ³Ô¹Ï students to perform experiments for the next hundred years. In addition, the Arizona fuel was housed in containers made of stainless steel, which is more durable than the aluminum containers used for ½ñÈճԹϒs supply.

After months of consultation (and forkwaving) with officials at Arizona and the Department of Energy, Frantz was able to broker a nuclear scrounge. Arizona would send its old fuel to ½ñÈÕ³Ô¹Ï; in turn, ½ñÈÕ³Ô¹Ï would send its old fuel to the DOE’s Idaho National Laboratory.

This spring, ½ñÈÕ³Ô¹Ï received 91 fuel rods, each containing 31 grams of uranium-zirconium hydride, for a total of 2.821 kilograms. “This is easily the most significant event in the history of the reactor since it first went critical in 1968,” Frantz told the Quest. “½ñÈÕ³Ô¹Ï needed more fuel, but new fuel is almost impossible to obtain. This will enable us to operate and fulfill our mission for many more decades.”

The new fuel will allow ½ñÈÕ³Ô¹Ï to operate the reactor at a higher power, once it has obtained permission from government regulators. (The reactor is currently rated at 250 kilowatts; ½ñÈÕ³Ô¹Ï will seek approval to double the power level.)

½ñÈÕ³Ô¹Ï is the only liberal arts college in the world with a nuclear reactor. Some 46 students are currently licensed to operate the reactor; about half are women. In fact, ½ñÈÕ³Ô¹Ï licenses more female operators than all other colleges and universities combined.

Frantz showed off the new fuel during a tour in March. As the reactor powered up, the core began to glow with Cerenkov radiation, bathing the room in a ghostly gleam of turquoise. For a moment, the pens in Frantz’s shirt pocket looked strangely like the tines of a fork—or was it just our imagination?