Sentence examples for most radioactive material from inspiring English sources

But the chemical process chosen to wash the most radioactive material out of the tanks also created benzene, an explosive gas, and had to be scrapped.

"You are looking at some of the most radioactive material in the world," Crawford tells me.

The plan was to put a chemical into the tanks that would make the most radioactive materials sink, so they could be pumped to the solidification plant.

The new vents were designed to send steam and gas directly from the reactor's primary containment, which houses the reactor vessel, racing past the usual filters and gas treatment systems that would normally slow releases of gas and eliminate most radioactive materials.

Fortunately, most radioactive materials cannot sustain chain reactions.

Last year, 23 countries at the Nuclear Security Summit agreed to secure their most dangerous radioactive materials.

Other options still under consideration but not given preferred status include removing most of the radioactive material off-site for $40 million and removing everything, including the reactor building, to restore the site to "greenfield" status for $96 million.

While the most obvious area of concern at a nuclear plant is the reactor, which operates under high temperatures and pressures and could vent radioactive steam in an accident, the bulk of the radioactive material at most plants is in the spent fuel pool.

Nordion, a company based in Ottawa that deals with medical isotopes, paid nearly $25,000 to the government after exporting category one radioactive material — the most dangerous type — to the United States without informing the CNSC.

Most of the radioactive materials were released in the first several days of the accident, and radiation levels in the air have been gradually declining since.

IODINE 131 and CESIUM 137 Most of the radioactive materials released from the Fukushima plant have been iodine 131 and cesium 137.