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Jon Hart

Jesse, you raise a good point. The section referenced, 9.3.9, does still speak to a way to remove contaminants from the air that can involve a dedicated exhaust system similar to previous requirements. My understanding however is that this serves a different purpose than the language that previously existed to vent smoke in the case of a fire. The intent of this section on the other hand lends itself more to plumes that can be commonly expected for the procedures planned in that location.

The Health Care Facilities Handbook provides a good deal of commentary on this section and states in part that "...Plume ventilation control systems include portable, mobile, disposable, local, and central stationary systems."

Thanks for bringing this up. It was a bit of an oversight on my part for not mentioning that we have not completely removed the need for consideration of a similar exhaust system.

Jesse Sharp

9.3.9 Medical Plume Evacuation. Plumes from medical procedures,
including the use of lasers, shall be captured by one of
the following methods:
(1) Direct connection to an unfiltered dedicated exhaust system
that discharges outside the building
(2) HEPA filtering and direct connection to a return or exhaust
(3) Chemical and thernal sterilization and return to the space.

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