Overview
Toxic/corrosive/pyrophoric or monoxide gas cylinders used/stored outside a gas cabinet, exhausted enclosure, or gas room. For example:
- Hydrogen Chloride
- Ammonia
- Carbon monoxide
- Arsine
- Silane
- Diborane
- Phosphine
- Phosgene
- Nitrogen dioxide
- Nitric oxide
This inspection item focuses on toxic, corrosive, pyrophoric and carbon monoxide gases that are larger than a lecture bottle that are not in a proper enclosure. Lecture bottles meeting this definition are required at a minimum to be in a fume hood. At UNL, the most common of these gases are ammonia, carbon monoxide, and fluorine. Others include hydrogen chloride, arsine, silane, diborane, phosphine, phosgene, nitrogen dioxide and nitric oxide. When inspecting cylinders, look for these names or other indicators of toxicity such as the DOT placard for poison/toxic. If you find these but are not sure if the cylinder requires special storage, make a note of the name and check it against information you find, such as in safety data sheets, once you return to the office. Next we will look at what is uniquely required for cylinders containing gases noted.
Note: It does not matter if these cylinders are in use or not, if the cylinder is in the lab and greater than a lecture cylinder, it must be in one of the three types of enclosures and not in a chemical fume hood.
Citations and Related Resources