How long would somebody be able to be burned on an open fire without sustaining life threatening burns? Also i love your blog 😀 Thank you for your time!
I’m honestly not sure exactly how long, but it’s not going to take much time.
A quick caveat: The data I could find was on conductive burns, not convection burns, so there is a little bit more leeway, but this one isn’t going to end well. Also, this is one of those times where I’m having to make an educated guess. I don’t have this particular bit of info internalized, and I can’t find a concrete answer on short notice.
Direct contact with water or steam over 155 Fahrenheit (68C) can result in third degree burns in around a second. For reference: Water boils at around 212F (100C), so even if you haven’t brought it to a boil, you’re already in range for some serious injuries, just messing around with simmering.
An open bonfire tops out at around 1100F (593C). Technically, the sustained temperature will be a bit lower than that, and it will vary by the wood being used. Of course, when you’re talking about temperatures in the 500C range, five degrees difference isn’t going to mean much. (Also, if that wasn’t enough fun, a charcoal briquette can burn at nearly twice that.)
Remembering that third degree burns are life threatening, and remembering that the smoke emitted from the flame will start out at roughly the same temperature as the fire. I’m inclined to say under a second.
It’s not that being set on fire is an immediate death sentence, nor that there aren’t some unusual circumstances where someone could get away unscathed. (Firewalkers are a thing, after all. They rely on a thin layer of moisture on their feet to avoid burning.) There are also plenty of burn survivors who have been, literally, set on fire. But, this is one of those things that can flat out kill someone. Even if they somehow survive the heat, the resulting smoke inhalation will probably finish the job.