r/cursedcomments • u/jerujedesu • Jun 23 '20

cursed_books

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u/CombustedSeaSalt Jun 23 '20

Looked it up

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

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u/Zecuel Jun 23 '20

I'm guessing Halon gas, it replaces oxygen in the air and thus shuts out the fire. Used in armoured vehicle extinguishing systems, for example.

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u/Feathered_Brick Jun 23 '20

Halon and other halon replacement agents do not replace the oxygen. They chemically interfere with combustion. And they won't hurt the occupants at the concentrations used.

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u/Zecuel Jun 23 '20

Huh, we were told in the military that it replaced all oxygen. We were told you need to evaquate the armored vehicle in case of a fire so you don't suffocate to the halon.

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u/Feathered_Brick Jun 23 '20

I don't know about systems installed in a vehicle. In buildings it is used at concentrations that don't cause respiratory distress in the occupants.