An Inert gas fire suppression system would ruin ROI for any Bitcoin mine but surely if you spent a few million on SP30's you'd buy a few $5 fire alarms and have a security guard?
I think it's an insurance scam but they forgot to buy any first.
You could fry an egg on top of an SP10 I certainty wouldn't put 2 on top of each other.
SP10 had the heatsinks bolted to the bottom of the frame, heance the case being so hot. the SP30 'hovers' so its case doesnt get remotely as hot to the touch.
and most fire suppression systems would either damage the miners, or are designed for enclosed data centers (you cant just sray inert gas into a windtunnel - it would be pushed out of the building in a heartbeat by all those fans