No human can run there and back before the reactor goes up!

She was the only woman present when the reactor went critical.

The reactor went critical for the first time on March 30, 1963.

Cables were destroyed by the fire and the reactor went out of control.

According to our calculations, the reactor will go in about ten minutes.

In the end, only one of the two planned reactors went on line.

Should the reactor go critical now we would have no chance of escaping.

At this rate the reactor will go in about seventeen minutes.

"How much time do you estimate until your reactors go critical?"

We've taken some serious damage here; our reactor is going to go critical at any time.