safety factor
factor of safety

However, the greater the safety factor, the less efficient the design may be.

His safety factor is high except when necessary in the sliding.

Maybe one of those safety factors is the happy ending.

The is a safety factor to ensure success on the next try.

Of course there was always some safety factor built into these ships.

They've got a terrific safety factor and there's really very little to go wrong.

Panel members said they were concerned about several safety factors.

I think the safety factors alone make some of the technology worthwhile.

"When I did show the area, there were people concerned about the safety factor," she said.

There was a safety factor built in, more pull could be applied.