A pressure vessel designed to hold compressed gas at an absolute pressure greater than 1 atmosphere at 68oF (20oC) that includes cylinders, containers, and tanks
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}