• Pre-qualified ADA hoods
  
  
  • Where ADA hoods are determined to be needed, the hood work surface shall be from 33-34 in. above the finished floor.
  • Hoods shall be equipped with a front edge air foils to reduce airflow eddies and to contain chemical spills inside the hood.  Pre-approved ADA hoods include:
  • SafeAire II by Thermo Scientific
    
    
• NC Sate University, EH&S Modified AHREA 110 test requirements:
  All As Installed (AI) fume hood test shall include the followings. All readings/records shall be directly downloaded from the instruments. Hand writing records are not acceptable:
  
  
  • Exhaust Flow Measurement
  • Hood Static Pressure Measurement
  • Face Velocity test
  • Cross draft evaluation per SHARAE 110
  • Airflow visualization (both small and large volume smoke tests)
  • Tracer Gas Containment Test
    • static and test
    • dynamic/sass movement test
  • Hood monitor and alarm calibration
  • Room pressurization check
    
    
• VAV hoods require additional commissioning tests:
  
  
• Flow/face velocity measurements at different sash heights full open, 18” and 12” sash height
  VAV systems shall prevent flow variations in excess of 10% from design at each sash location.
• VAV response time measurement
  • A response time of 3-5 sec.
    
    
    
• NEW AND RENOVATED FUME HOOD CONSTRUCTION FORM

One from needs to be filled out for each hood and returned to EH&S. EH&S will certify the fume hoods only after completed forms are received. Please visit the following link for FH-1 form download:

• Examples of other  Local Exhaust Devices:
• Gas cabinets
• Snorkels
• Canopy hoods