Fume Hood Safety: DOs and DON'Ts

Fume Hood Safety: DOs and DON'Ts

fumehood safety should be taken very seriously you should regularly review the recommended safe practices listed on your lab Kongo fume hoods corner post don't be like scooter when using substances that produce hazardous levels of airborne chemicals such as gas fumes vapors and dust make sure the selected enclosure is appropriate for the work you intend to do consult your safety officer for a reference on what type of safety equipment is required the safety tips in this video applied to chemical fume hoods specifically scooter works with dangerous chemicals and in appropriate enclosures don't be like scooter do not place your head inside the hood the fume hood interior should be considered a contaminated space at all times don't lean in to the contaminated fume hood like scooter minimize drafts and sudden movements in front of the hood because turbulence generated in front of a chemical fume hood can cause loss of containment locate hoods away from heavy foot traffic don't be like scooter work a minimum of 6 inches inside the hood potential loss of containment increases significantly at distances within 6 inches of the plane of the sash place all hazards beyond this threshold don't keep your work dangerously close to the front of the work surface like scooter is livid on the age elevate equipment above the work surface elevated apparatus is much less obstructive to the airflow through the hood equipment left flat on the work surface interferes with air flow needed below to efficiently clear contaminants don't block airflow with equipment like scooter keep sill and baffle unobstructed the sill or airfoil of the hood is critical to containment so avoid blocking it all of the airflow through the hood eventually moves through the baffles at the back obstructing these baffles can cause uneven face velocities and potential loss of containment don't block the airfoil with notes reminders and other obstructions like scooter do not use the hood for storage because hoods work more efficiently without obstructions keep unneeded objects to a minimum chemicals should be capped and stored in the appropriate chemical storage cabinet scooter keeps things that he needed long ago and things he might someday need in his fume hood and that thing adjust the sash to the smallest opening possible when in use locate the sash at a comfortable height just above the elbows and look into the hood through the glass the sash glass should be used as a physical barrier to protect the user's breathing area whenever possible scooter likes to keep the sash wide open says it gives him elbow room you're doing alright scooter you look a little woozy scooter close the sash when the hood is unattended closing the sash completely protects passers-by in the event of a projectile reaction inside the hood additionally in a variable air volume or Vav mechanical system this improves energy efficiency scooter shows blatant disregard for his lab mates do not remove any of the hood components multiple components of a chemical fume hood are designed to manipulate air flow into and through the hood these components typically work together in harmony and a single modification can result in severe loss of containment Scooter fancies himself something of a fume hood engineer and he likes to make changes on the fly don't be like scooter do not place flammable solvents near heat flame or sparks if flammable materials and heat sources must coexist in the same hood take great care and work practices and separate them as much as possible to avoid an accidental fire scooter recklessly places flammable solvents near heating devices do not evaporate large amounts of flammable liquids especially in a low air volume situation such as with the sash closed on a Vav mechanical system minimize the evaporation rate of flammables by keeping the vessels covered whenever possible scooter is a sucker for convenience so he leaves flammable agent containers wide open see you tomorrow scooter if the lab is still here wipe up spills immediately spilling a solvent increases its surface area evaporation rate and probability of exposure scooter must think his mother works in the lab and will clean up after him routinely validate air flow proper air flow through the fume hood is critical to safe operation annual inspection of the face velocity with a calibrated instrument should be minimum protocol into complete ASHRAE 110 containment assessment is strongly recommended scooter doesn't know if anyone has ever done that and he's not about to start caring now if the ventilation system malfunctions or if the airflow alarm indicates an unsafe condition close the sash discontinue hood operation immediately and call for help do not use the hood with bio hazards or perchloric acid remember your chemical fume hood is designed for a very specific family of hazardous substances working with biological hazards requires the use of an enclosure or cabinet classified for biological applications the use of perchloric acid requires a fume hood designed and dedicated to the use of this specific very hazardous chemical don't be like scooter take protecting your laboratory environment seriously and pay attention to recommended practices when using any chemical fume hood

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11 thoughts on “Fume Hood Safety: DOs and DON'Ts

  1. I sincerely hope the "Scooter Dance" is what soon becomes what's hip with the kids… away from fume hoods

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