MINNEAPOLIS - Hurricane Sandy forced the evacuation of 200 patients from a New York hospital Monday night after its backup generators failed.

New York University Langone Medical Center transferred patients to two other hospitals nearby.

What do hospitals in the Twin Cities do to prevent a scenario like that?

Dan Johnson-Powers, withUniversity of Minnesota Medical Center, Fairviewsaidone of its local hospitals has two backup generators placed on an upper level to protect them from flooding.

Johnson-Powers, an emergency management specialist, said hospital generators are checked at least once week. But if they were to fail in an emergency, there is still a safety net for the most critical patients.

Johnson-Powers said, "If we lose power, most of our critical life safety equipment has four hour battery backup. So we know we have a little bit of time to cause evacuation."

He said the University of Minnesota Medical Center, Fairview holds full hospital drills at least once a year and departmental drills more often.

He said last year, it took eight hours to transfer patients from the University's old children's hospital to the new University of Minnesota Amplatz Children's Hospital. But in an emergency, he said it would likely have gone much faster.