HFS: HEPA Filter Scrubber 99.97% HEPA filter and integral fan. Units have different capacities generally 5-600 cfm in ORs, larger units in anteroom - up to 1200 cfm
Connect HFU discharge to existing low return grille
Substerile room with blanket warmer. Seal off low return grille
HFS ~600 cfm
Remove this door so that substerile room is open to the anteroom Seal off low return grille
OR 16 1500 cfm SA
Existing room pressure monitor - use to verify OR pressure is positive relative to anteroom
Scrub Sinks
OR 15 1350 cfm SA
HFS ~600 cfm Temporary barrier wall with 54" door (clearance of 42" door will not. Angle walls as needed to clear doors, wall- or ceiling-mounted devices. Verify fire protection sprinkler coverage. Seal wall all around to existing construction. Walls shown angled here in order to avoid other doors in corridor - can be straight or angled, as needed
Temporary duct connection from HFS, blowing through temp partition into sterile corridor
Arrows indicate intended airflow direction Anteroom - Negative Pressure: orange area is considered contaminated during any procedure with infectious patient in either OR.
Seal off existing diffusers & grilles
Adjust airflow of two HFS to achieve negative pressure in anteroom, relative to sterile corridor
Temporary Modifications to prepare two-room surgery suite for airborne infectious isolation 22 March 2020
HFS: HEPA Filter Scrubber 99.97% HEPA filter and integral fan.
Connect HFU discharge to existing low return grille
Substerile room with blanket warmer.
HFS ~600 cfm Seal off low return grille Remove this door so that substerile room is open to the anteroom Seal off low return grille
OR 16 1500 cfm SA
Existing room pressure monitor - use to verify OR pressure is positive relative to anteroom
Scrub Sinks
OR 15 1350 cfm SA
HFS ~600 cfm Temporary barrier wall with 54" door (clearance of 42" door will not. Angle walls as needed to clear doors, wall- or ceiling-mounted devices. Verify fire protection sprinkler coverage. Seal wall all around to existing construction. Walls shown angled here in order to avoid other doors in corridor - can be straight or angled, as needed
Temporary duct connection from HFS, blowing through temp partition into sterile corridor
Arrows indicate intended airflow direction Anteroom - Negative Pressure: orange area is considered contaminated during any procedure with infectious patient in either OR.
Adjust airflow of two HFS to achieve negative pressure in anteroom, relative to sterile corridor Seal off existing diffusers & grilles
Temporary Modifications to prepare two-room surgery suite for airborne infectious isolation 22 March 2020