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Q:
How does dilution work?
A: It simply
reduces the concentration of contaminants in a space
by introducing cleaner air supplied from other areas
within the building or from outside.
Q:
Won't this practice allow contaminated air to flow
to other areas?
A: If the
room is kept under negative pressure by exhausting more
air from the space than that which is being introduced
into the space, then most of the contaminants should
either be exhausted from the space or contained within
it.
Q:
What is the removal process?
A: When the
contaminant is diluted within the space by evacuating
or exhausting from the contaminated space either directly
to the outside or through a HEPA filter.
Q:
Should air contaminated by TB be exhausted directly
outside?
A: Since
TB is spread via the airborne route, it is advisable
to research any existing federal, state, or local codes
which regulate environmental discharge since people and
or animals could be put at risk. Also, when contaminated
air is being exhausted great care should be taken to
insure that the exhaust is ample distance away from any
other air intakes or adjoining buildings.
Q:
Are there any other concerns related to the total
exhaust of room air?
A: The initial
cost of breaking through outside walls, electrical wiring,
or replacing windows makes the modification both permanent
and costly. Exhausting already heated or cooled air from
the space will greatly add to energy and fuel costs on
an ongoing basis. The tempered air which is removed from
the space will greatly add to energy and fuel costs on
an ongoing basis. The tempered air which is removed from
the space must be replaced with outside or makeup air
which must be treated to match the design conditions
of the environment. Also, by making this a permanent
modification, you become limited to which areas may be
utilized to treat TB patients.
-End of Section
3a-
Next- Section
3b
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