Limit, Ceiling 2 : The maximum concentration of an airborne contaminant to which a person might be exposed. The ceiling limits utilized are those published in 29 CFR 1910. 1000
NFPA 55 Standard for the Storage, Use, and Handling of Compressed Gases and Cryogenic Fluids in Portable and Stationary Containers, Cylinders, and Tanks, 2005 ed. http://www.nfpa.org/assets/files/AboutTheCodes/55/ TIA55-05-1.pdf, http://www.colorado.edu/firelifesafety/sites/defau lt/files/attached-files/gas_storage.pdf, (Std: Storage, Use, and Hndlg of Compressed Gas and Cryogenic Fluids in Portable and Stnry Conts, Cylinders, and Tnk - Amer) {211 NFC}
NFPA 1 Fire Code, National Fire Protection Association (NFPA), MA, USA 2009 ed. https://law.resource.org/pub/us/code/ibr/nfpa.1.20 03.pdf, (Code: Nat Fire Protection Association Fr&LfSf Requir - Amer) {171 NFC}