EH&S Resources
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Fume Hoods
Chemical fume hoods are the most essential engineering control in a lab. They provide its users with protection against hazardous vapors, gases, or dusts given off by hazardous chemicals used in the lab. Although there are various types of fume hoods used at the University of South Florida, general guidelines should be followed to help maintain the fume hood’s performance. Fume hoods are checked annually by Environmental Health & Safety to assure that they are performing within the specifications to protect its users and they are in compliance with fire codes.
Types of Fume Hoods
- Full Sash
- Bypass
- Walk-In
- Perchloric Acid
- Radioisotope
Guidelines
To maintain effectiveness and performance and to minimize exposure,
- All operations should be performed at least 6 inches inside the hood
- Avoid rapid movements, such as opening & closing doors, that can create cross-drafts and disrupt airflow
- Keep sash as low as possible. The glass is your only primary barrier against a spill, splash, or explosion.
- Chemicals and equipment should not be stored permanently inside the hood
- The hood sash or panels should not be removed from the hood or altered.
- Close sash when hood is not in use
- Check the air flow monitor periodically. If the monitor is alarming, do not mute or use the fume hood. Contact EH&S/Physical Plant.
- Chemicals such as perchloric acid, hydrochloric acid, and hydrofluoric acid should not be used in a chemical fume hood that is not approved for their use.
- Radioactive materials should only be used in chemical fume hoods if certified by the Radiation Safety Office.
Repairs
Never assume your hood is functioning properly. Always check your hood prior to use. If there is a repair needed in your fume hood due to:
- No or low air flow (beeping air flow monitor)
- Leaks
- Unusual Noises
- Light Bulb replacement
Fill out a Physical Plant work order request online at http://www.pplant.usf.edu/req_work.htm, or call
Tampa- 974-2845, St. Petersburg – 873-4135. |
