waste anesthetic gas ventilation

[ad77]

what are the design standards / criteria for waste anesthetic gas ventilation?

application: MRI room for vet. research. anesthetised animals releasing anesthetic gas and making operators light headed and sleepy.

in my google research i have found the following;
- low level exhaust direct to outside
- min. 6 ac/hr supply air with min. 2 ac/hr outside air (OSHA)

any further input would be appreciated!!!!

 

[PEDARRIN2]

Typically, for medical gases, NFPA 99 applies. But that is for humans.

I do not know if there is anything for animals.

But since the doctor is human, you might want to look at NFPA 99 for guidance.

 

[GMcD]

Normally in most Hospitals, there is a thing on the wall called a "scavenger" which is a small (nominally 2" dia./ 50mm dia) connection that a flexible hose from the anaesthetic gas unit gets plugged into. The scavenger is connected to the general exhaust system so it's under negative pressure and will suck any waste gases out, so they don't dissipate into the room. All anaesthetic gas units should have a waste gas hose that connects to a local exhaust source. The only other way to control waste gases is by dilution and have lots of air changes in the room. In Canada we have the CSA standards for Medical Facilities that set out the requirements, and the NFPA and OSHA/NIOSH standards should also be checked.