A pressure vessel designed to hold compressed gases at pressures greater than one atmosphere at 20oC (68oF) that includes cylinders, containers, and tanks, transportation, handling, or storage
NFPA 318 Standard for the Protection of Semiconductor Fabrication Facilities, 2002 ed. http://www.nfpa.org/assets/files/AboutTheCodes/318 /Errata318-02-2.PDF, (Std: Prot of Semiconductor Fabrication Fcilty - Amer) {297 NFC}