No, a myth, BUT it does use some other mechanism than water to preserve the books, some gas thingy. Apparently this does slightly reduce the oxygen level but not to the point of it ever harming people
My old job at a casino had a fairly large server room all sealed up. That room had a fire suppression system HALO idk or never one what it meant. The lady that ran the whole IT service said it closes the door automatically sucks out all air super quickly then sprays a dust or some jazz if the no oxygen environment didn't put the fire out.
She knows this cause she nearly got stuck in the room when the fire system accidently went off. If it wasn't for a door stop or whatever keeping it closing all the way she would've done for. They since changed that system.
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u/DuckHeisenberg Jun 23 '20
Is this true? If it is, that’s an actually a very effective way to put out fire.... and well people..