For the new high efficiency hoods, require an Ashrae 110 test as manufactured(AM) and another one as installed (AI) for at least 10 or 20% of the hoods in your facility.
Air flow alarm visible( with numbers) and audible are a requirement. When testing the hoods we have a required that the hoods pass at flow rate: 80 FPM(70-90FPM) at 18 inches opening and hood alarm set at 55FPM , sash response time at 60 sec or less. Ask for a balancing report also to be sure the supply is proper for the space as a VAV hood will not work without enough supplied air, hence the constant flow alarm which can be a nuisance to the occupants. Fume hoods sensors are not always useful as research hoods have to run overnight at optimum flow rates, a constant battle between the energy group and safety people. Room occupancy sensors are fine as long as the researchers know to not to work in the dark(with the light off) unless they want their hoods air flow to go down.
Again, just my two cents.
Yung Morgan, MsPH
Industrial Hygiene Services
Environmental Health and Safety
117 Draper hall
UMASS,Amherst MA 01003
phone (413) 545-2682
Fax (413) 545-2600
email : pmorgan**At_Symbol_Here**ehs.umass.edu
I would like to start a discussion on current experience with chemistry fume hoods related to overall quality, best value, interior construction, coatings/materials of construction, installation issues, air flow alarms, order lead time, energy saving features plus anything else that comes to mind.
James S. Johnson Ph.D., CIH, QEP
JSJ and Associates
Pleasanton, CA 94588
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