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Fume Hoods Fume Hoods, Proper Use Fume Hoods Fume Hoods, Proper Use

Fume Hoods Fume Hoods, Proper Use - PowerPoint Presentation

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Uploaded On 2020-07-01

Fume Hoods Fume Hoods, Proper Use - PPT Presentation

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

fume hood equipment sash hood fume sash equipment examples real hoods http www umn air proper work comics flow

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Presentation Transcript

Slide1

Fume Hoods

Slide2

Fume 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

.

Slide3

Fume 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

Slide4

Bad

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

Slide5

Fume Hood, Real Examples

Close the hood sash!

Work 6” back from the sash!

Slide6

Fume Hood, Real Examples

Equipment elevated to promote air circulation

Clutter

Slide7

Fume Hood, Real Examples

Solvent evaporating into the environment!

Slide8

Fume Hood, Real Examples

Researcher name and contact information.

Reaction schemes alert coworkers of

reactions that are

in progress.