I don't know how the law interprets
"normally occupied" where you are
at, or even stateside. but i do know
the laws of physics are generally
followed, regardless.
I don't like the sounds of this system. Maybe there is
more to it that would justify calling my intution--misdirection.
If people only work there 4 hours per day, 2 days per week,
then one might think that the chance of a dump on them, is
8 hours/168 hours * (frequency of false activations).
That would be bad use of uncertainty though,
as more false alarms are created during times when people are
occupying (and working) in a building than when they are not.
If there is the possibility of "total flooding" any compartment,
below grade, I would instigate some serious measures:
1. take the CO2 system out, or
2. install dead man switches
3. install Pre-Activation Alarm (visual and audio).
4. provide signage at entrance to these levels
explaining the system, the symptoms of
hypoxia (which include the inability
to recognize the symptoms), the need to evacuate
up and out, and the consequences of death with
not exitting (that should reduce some of the
guessing with pre-movement time).
5. provide SCBA near area of refuge/stair,
6. for safety's sake, we should evacuate
all sub-grade levels with a release, because CO2 sinks.
do a calculation and see what the end concentration will be
in each room, and estimate how long it will take to fill the
lower floors with a discharge on level 1.
inspect the stairways/exit routes and assure yourself they
will remain tenable long enough for occupants to be able
to evacuate.
responses are just off the cuff...this is serious stuff.
scot deal
excelsior fire
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