Re: My manager used halon...
I'm puzzled, why would Halon, an inert gas, need to be sealed off from the rest of the building?
If there is something burning in a building, _everybody_ should get the fsck out of the building immediatly, having seals between hoomans and burning toxic chemicals won't do diddly.
Halon doesn't kill you, the products of burning things kill you, especially all the PFTE and PVC byproducts as they burn. Halon at an effective dispersion is at 10% of the air at most.
Halon works by disrupting the actual chemical reaction of burning, it doesn't "displace all the oxygen" or "alter the oxygen to not be breathable" as so many common myths have it.
It is an Ozone depleting gas, so that is why FM200 was developed. Same things apply though.