Tour Lab Chemical Hygiene Plan (2004), pg. 8

CONTROL MEASURES AND EQUIPMENTJANUARY 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 hood

• Fume hoods should provide 70 to 90 linear feet per minute of air flow

• 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

VENTILATION

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 used

• If 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