What do you do for ventilation when running dry ice?

[Particle]

I'm curious what ventilation precautions you guys take when running dry ice. To date I've always done my runs outdoors since it's generally pleasant and guaranteed safe, but after my recent move into the city that has become less practical if I don't want to advertise to the neighborhood that I have expensive toys worth stealing.

I was doing some calculations for my indoor rooms and the concentration of CO2 after running a couple dozen pounds of DI would likely kill me (12%), so I'm going to have to crack a couple of windows and run a fan or something to force fresh air through the house. Ideally, concentrations would be kept at < 1% and for sure I don't want them passing 3%. For reference, 1 pound of solid CO2 (dry ice) sublimates into about 8-10 cubic feet of CO2 vapor. I don't know exactly how much since I can only find good density numbers at 0C and it will expand to fill a greater volume at room temperature (23-24C).

This brings me to the point of the thread. What do you folks do for ventilation when doing your own runs, assuming you do it indoors?

[zzolio]

I just have a window open it works fine

have never had any problems even though I have used 30kg dice on a weekend with dice on two gfx and cpu

[desnudopenguino]

When I've benched with DIce, I used the kitchen/dining room table (more area to set up and not have things just thrown together) and had the overhead fan on and a couple windows opened. That seemed to work fine for 10kg.

[der8auer]

Just keep your window open and you'll be fine That's how I always do it.

[K404]

Just keep your window open and you'll be fine That's how I always do it.

+1

[M.Beier]

Keep doors open in appartment, and just a window somewhere....
If you start feeling sleepy and it isnt because you have been up for ages, or feel dissy, make sure to open a window ASAP, else, no worries...
I have never had problems at home.... I have experienced issues when driving for 40 min, in a sedan or hatchback, with 20-40kg in boxes in the trunk... I opened window same sec and problem was solved.

[M.Beier]

Keep doors open in appartment, and just a window somewhere....
If you start feeling sleepy and it isnt because you have been up for ages, or feel dissy, make sure to open a window ASAP, else, no worries...
I have never had problems at home.... I have experienced issues when driving for 40 min, in a sedan or hatchback, with 20-40kg in boxes in the trunk... I opened window same sec and problem was solved.

[xXSebaSXx]

I never took any "special" precautions.... I bench in my spare bedroom turned office/bench area and all I did was just leave the room open; there is no way that 20 Lbs of Dice will create enough CO2 to completely saturate an entire apartment to the point where it would be dangerous.... And then there is the fact that doors that lead to the outside world are not air-tight so gas can escape that way too.
I can tell you that on my longest sessions (25 Lbs and about 10 hours of benching) I never even got light headed.