Monday, June 10, 2019

The Columbus or Nance Drill

The John Nance drill is based on the death of John Nance of the Columbus (OH) Fire Department. Engineer John Nance was trapped in the basement of a commercial occupancy following a floor collapse. Despite the exhaustive efforts of multiple crews, Engineer Nance was unable to be removed from the occupancy prior to succumbing to the fire and its by-products. Several attempts were made in John's rescue attempt, including dropping a ladder in the hole for him to climb out. Unfortunately, John was too disoriented to complete his own extrication from the below-grade area.

Dozens of videos on-line.

Assuming the unconscious body is on his back. Drape center of rope across chest at armpit level.

Lift arm and slide rope beneath arm. (Dashed section of line)

Lift other arm and slide rope beneath that arm.

If rope is tied in a loop, take end of loop opposite end draped over chest. Slide beneath loop draped over chest. Pull end of loop that was slid beneath chest loop in direction you wish to drag the unconscious body.

Most of the videos on-line show two lines to each arm and attachment with a clove hitch to the upper arm. As many as eight firefighters can lift the victim out of the hole, two on each line. Less horsepower is needed for dragging a victim down the road.
With regard to the Seven Skinny Cows story, if you were a young man you might think you were following the rules if you only approached the victim to set the ropes and then pulled him from a distance.

In a similar way, a guy as strong as Chernovsky could use a much shorter loop to make a field expedient grab handle to drag bodies to the porch.

The loop could be untied and pulled from one end to remove. In Chernovsky's case, he would simple slide the end of the loop he grabs back beneath the chest loop.

Wait until Wednesday to see how well it works for them.

1 comment:

  1. I've practiced the Nance drill many a time - lifting an "unconscious 180 lb dummy" from the floor below through a hole in the ceiling (i.e. the floor above). Tough stuff, but really the fastest way to lift a fallen firefighter out through a floor/roof collapse with no other viable exit. In many departments this kind of rescue falls to a specialized Rapid Intervention Team (RIT) that trains specifically for a variety of downed firefighter rescues. The handcuff knot (really just a clove hitch) on each of the upper arms lifts the arms first through the collapse hole - and helps to "streamline" the arms and shoulders to help get the victim back out through the hole. Not an easy rescue and it takes a coordinated and trained team to execute well. What you're describing is a standard webbing drag. Quick to execute and one man can drag another without too much struggle - although debris on the ground/floor raises the degree of difficulty very quickly.