8 Control Measures and Equipment January 10 2012 Ventilation Laboratory ventilation should be not less that six air changes per hour calculated Work with toxic chemicals that have low air concentration limits or that have high vapor pressures should always be done in a ID: 647193
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Slide1
Tour Lab Chemical Hygiene Plan (2004), pg.
8
Control Measures and Equipment
January 10, 2012Slide2
Ventilation
Laboratory ventilation should be not less that six air changes per hour (calculated
)
Work with toxic chemicals that have low air concentration limits, or that have high vapor pressures, should always be done in a
hood
Fume
hoods should provide 70 to 90 linear feet per minute of air flowSlide3
The apparatus inside the hood should be placed on the floor of the hood at least
six inches away from the front edge
Fume hood windows should be lowered at all times
Hoods should never be used as storage areas for chemicals
VentilationSlide4
In the event of fume hood failure:
Immediately stop all work inside the fume hood
If safe to do so, secure or isolate reactions and turn off all equipment being usedIf safe to do so, close all open chemical containers
Close the sash completely
Report the problem immediately
Ventilation
Safety and Risk Management, Western Carolina University