Get approval from the supplier before subjecting cylinders to very low temperatures. Where provided, valve outlet caps or plugs should be securely affixed to the valve outlet prior to transportation. These shall be used since they provide a secondary containment for the valve. These plugs shall be checked and tightened before returning the cylinder to the supplier. Storage Safe storage of compressed gas shall start with signs being posted identifying locations for gases and cryogenic liquids.
Identification can be by name, hazard class, or both.
Storage areas must not exceed 125 degrees Fahrenheit. Adequate spacing shall be provided to allow cylinders to be grouped together by Hazard Class. Separate storage should be provided for full cylinders and empty cylinders. Storage in basements shall be avoided. Cylinders shall be adequately separated from combustibles and not stored near flammables such as gasoline.