"Factorial damn, then!" said de Hooch.
"What's the matter?"
"Apparently the foul-up is on the other side of the firewall."
"Are you going in?"
"I'll have to."
"All right. Watch yourself."
"I will." He went over to the periscope that surveyed the part of the reactor beyond the firewall. Everything looked normal enough. He carefully checked the pressure gauge. Normal.
"Check the spectro for me, will you?" he asked. "Make sure that's just the normal helium atmosphere in there."
"Sure." A pause. "Nothing but helium, Guz. What were you expecting?"
"I don't think I'd care to walk into a hydrogen atmosphere at three hundred Centigrade."