Source PhD Comics httpwwwphdcomicscomcomicsarchivephpcomicid1023 Exhausts into the environment The hood is NOT a waste disposal mechanism All containers in the hood must be closed ID: 792269
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Slide1
Fume Hoods
Slide2Fume Hoods, Proper Use
Source:
Ph.D
Comics
http://www.phdcomics.com/comics/archive.php?comicid=1023
Exhausts
into the environment
The hood is NOT a waste disposal mechanism.
All containers in the hood must be closed
Do not store chemicals or unnecessary apparatus in the hood
.
Slide3Fume Hoods, Proper Use
Check the air flow daily. Acceptable range is 80 to 150 linear feet per minute, at the designated sash opening (usually 18 inches).
Report malfunctions to Facilities Management (612-624-2900).
Ensure baffles are not blocked.Raise equipment off floor so air may pass beneath it.Keep all apparatus at least 6 inches back from the face of the hood.
Do not place electrical receptacles or other spark sources inside the hood when flammable liquids or gases are present. Keep sash closed as much as possible. Work behind horizontal sliding sash if one exist, and if there is a chance of explosion, eruption, or splashes, etcMinimize foot traffic in front of the hood.
UMN, Duluth. General Safe Work Practices for Laboratory Fume Hood. Last Update: March 3, 2009 http://www.d.umn.edu/ehso/safety/Fumehood_sop.pdfEquipment-Specific
Slide4Bad
Best
Better
Locate equipment as far to the rear as possible, without blocking the lower slot in the rear baffle.
Never operate equipment closer than 6” behind the plane of the sash!
Fume Hood,
Proper
Setup
Green indicates ‘SAFE’ airflow
Amber light indicates warning
Red indicates a face velocity failure and ‘ALARM’ will activate
Press ‘ENTER’ to mute the alarm while you set up equipment in the hood.
Innovative Laboratories and U of MN DEHS, Kewaunee Dynamic Barrier Low-Flow Fume Hoods. http://www.chem.umn.edu/services/safety/fumehoodorientation.ppt
Slide5Fume Hood, Real Examples
Close the hood sash!
Work 6” back from the sash!
Slide6Fume Hood, Real Examples
Equipment elevated to promote air circulation
Clutter
Slide7Fume Hood, Real Examples
Solvent evaporating into the environment!
Slide8Fume Hood, Real Examples
Researcher name and contact information.
Reaction schemes alert coworkers of
reactions that are
in progress.