The ASHE CMS State Operations Manual Appendix A Crosswalk provides A-Tag information along with the related codes and standards applicable to the requirements for each A-Tag. To ensure that the tool is relevant to health care facility professionals, it focuses specifically on A-Tag requirements that affect the physical environment.
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Compliance Tools
A building’s HVAC system is designed to perform several tasks: filter, cool, heat, humidify, dehumidify, pressurize, and/or exhaust. Each of these tasks affects indoor air quality. For example, if incoming air is not properly filtered, excessive dust from the outdoors is drawn into the building. If supplied air is not conditioned or heated satisfactorily, occupants may experience thermal discomfort. If supplied air is not dehumidified appropriately, excessive relative humidity levels may promote microbial growth.
Positive vs Negative
Operating room and protective isolation = Positive
Airborne isolation = Negative
When the total CFM from supply air (1&2) > than the return air (3), the room is under positive pressure and the air will flow out of the room.
When the CFM from the return air (3) > than the supply air (1&2), the room is under negative pressure and the air will flow into the room
Take the Quiz
Two principles for air-conditioning operating rooms are that air should be supplied at the ceiling, in a unidirectional or laminar air pattern, and that higher air change rates result in lower bacterial counts within the room. However, these principles are applied along a wide spectrum, and ongoing research is being conducted to optimize air distribution airflow patterns and quantities.
On-Demand Educational Webinars
All three parts of this webinar series are available for members by clicking below.
All three parts of this webinar series are available for members by clicking below.
On-Demand Educational Webinars
Reference Standards in the 2012 Edition of NFPA 101 and their Impact on the Operation of Health Care
Recorded May 18, 2016
Speakers: William E. Koffel, P.E., FSFPE and Mark J. Aaby, P.E.
The 2012 edition of NFPA 101 contains numerous reference standards that impact the operation of health care facilities, and this webinar covers those changes.