[Ferro List] Respiriatory Precautions

[Keith B]

Respirators are an appropriate topic for FC workers.  Silicosis is an 
obvious hazard with cement dust, but some admixes and finishing 
materials are sold for commercial use, often lacking detailed warnings 
but needing special awareness and equipment for the amateur.  One aspect 
of something like a positive air rig is that its use encourages the 
discipline towards proper procedures that is not ingrained in an 
occasional worker.  I have a self contained Scott pack somewhere in the 
basement, but it hasn't been recharged or checked in 20 years.  When I 
needed it, I was never tempted to take off the mask to wipe my brow...  

Making a positive blown mask system is not difficult, but since leakage 
is not an issue, a hood is better and a lot more comfortable if used for 
long periods on a hot day.  Even computer style fans are enough if the 
pipe diameter is adequate (e.g. the wire spiral flex ducting for dryer 
vents), one just needs to avoid brush style commutation.

This would be a good subject for a 'how to' article on the FEN website.

kb


Jon Sherbeck wrote:
> Alan,
> ...
> I wish I had a $2,000 respirator, but honestly I doubt it would work any 
> better than my improvised set-up which I'll describe for the benefit of 
> anyone who like me, is really sensitive to inhaled crap, chemicals, dust 
> etc.
>
> I use an old Kirby vacuum cleaner for the air source.  I place the machine 
> ...