[citation][nom]JonnyDough[/nom]If a building does go up in flames it's your job
on the line. Any building owner would want his people to watching out.[/citation]
I dont recall seeing anything ever go up in flames as a result of liquid nitrogen. Worst case, something catches fire near a tank for some weird reason, tank gets hot and pops the blow off valve, huge cloud of nitrogen smothers the fire. ^_^