Why fume hood is used

The following documents may be required for your research operation, depending on what type of research you are performing, the potential hazards you and your staff will be exposed to, and the engineering controls you are implementing.

When you click the link it will automatically go to the download file. If your fume hood has not been certified within the last year, or if you have any questions regarding fume hoods, call EHS at Ductless fume hoods are not an acceptable alternative for traditional ventilated fume hoods because they do not offer the same level of protection to lab personnel as traditional ventilated fume hoods.

They do not remove certain hazardous contaminants from the work space and may cause personnel to be exposed. In addition, the National Fire Protection Association NFPA 45 explains that ductless chemical fume hoods are only applicable for use with nuisance vapors and dusts that do not present a fire or toxicity hazard.

EHS does not recommend the use of ductless fume hoods for the following reasons:. Lab directors must obtain approval from EHS to purchase a ductless fume hood.

This will reduce the risk of eddy currents blowing vapors back at you and will maximize capture ability of the hood. In case of lab fire or explosion, ensure your safety first and call emergency responders immediately for help. If possible, shut down the electric power before evacuating the area. Use a wet towel to cover mouth and nose as protection against heavy smoke.

Pull fire alarms and evacuate the building safely. Why are no unauthorized experiments permitted in the lab? The student lacks experience in the lab and could be harmed.

You just studied terms! Low flow fume hoods are designed to operate at 70 LFM at 18 inches sash height. The fume hood can provide adequate protection for most laboratory processes if it is used correctly. Detailed instructions for use of the fume hood can be found in the Lab Safety Manual. The performance test typically includes an evaluation of the face velocity, the sound, containment, monitor performance and the tracking ability of a VAV when applicable.

If a hood fails an inspection, it may need to be taken out of service until repaired. Use your fume hood, or other engineering controls, rather than the benchtop when there is a possibility of overexposure to air contaminants generated by a laboratory activity. Be aware of ventilation system shutdowns and do not use the hood when the ventilation system serving the room is shut down. The following guidelines should be followed if your alarm activates:. We will troubleshoot the problem and we may refer it to UW Facilities for repair.

Installing and replacing a fume hood may require design and planning, asbestos abatement, decontamination and work beyond simply installing the hood. An evaluation by a mechanical engineer or other qualified party and a design is often needed before procurement is authorized.

Laboratories can experience ventilation shutdowns.