ChemTracker and Compressed Gases-Environmental Health & Safety - Carnegie Mellon University

Friday, January 11, 2013

ChemTracker and Compressed Gases

Most ofour labs are quite good at keeping a current inventory of hazardous chemicals in our ChemTracker Inventory System.  We do find, though, that compressed gases are not so well represented in these inventories.   Compressed gases are hazardous materials both due to their compressed nature as well as from hazards of the gases themselves.  Our policy, through the Chemical Hygiene Plan, REQUIRES that compressed gases be including in the labs’ current chemical inventory.

Please review your chemical inventory and include all of your compressed gases in it.  This includes both the large cylinders we received from our suppliers as well as lecture bottles and calibration gas mixes.  If you need any assistance in this process, please contact EH&S.  For example, entering gas quantities for certain cylinders is not straightforward.  On the right is a chart of quantities of various gases in standard, tall cylinders.

Gas cylinder Capacities (Size A) (cuft)

  • Acetylene (380)
  • Helium (218)
  • Nitrogen (228)
  • Argon (248)
  • Oxygen (249)
  • Hydrogen (196)
  • Air (234)

By: Mark Banister,, 412-268-1493