As to these supposed 'mist' sprinklers ... I would INSIST upon FM or UL approval of the system.
I've seen all manner of experiments done regarding droplet size, and it is my belief that a fine mist would not be an effective way to dampen a fire.
Likewise, I've been in all manner of situations where "instant experts" decided, simply using 'logic of the moment,' that sprinklers posed a greater risk than a fire posed - either from water damage after the fire was suppressed, or from an accidental discharge. One gent went so far as to defeat the alarms, and chain the water main shut, using his own good hands.
Such fears are founded upon emotion- not actual data. If there is an intolerable risk, it seems to be the result of a poorly designed work center - not of the sprinklers themselves.
