Cannonpointer » 20 Jun 2022, 8:30 pm » wrote: ↑
If you have a chimney fire, you call the chimney fire department.
Or you could keep the damper in a resonable position and maybe clean your stack from time to time...
Or just stop burning stolen railroad ties.

The hottest of the hot is when I burn white styrofoam and particle board scrap.
Do you have a positive mechanical lock on your damper handle position..or do you hope that air pressure doesn't work it open after you go to bed...?
I won't argue about this any more, since fire risk assessment is a personal choice / gamble that we all should make for ourselves.