Bulk storage is to be in approved rooms or outside enclosures. Bulk storage cylinders should be chained and security measures taken to prevent tampering and loss. Do not store empty cylinders with full ones, and do not place cylinders where they may become part of an electrical circuit. All gas cylinders in service or storage, empty or full, shall be securely held upright in substantial racks or secured to other rigid structures so that they will not fall or be knocked over. Cylinder caps should be kept in place during storage.
All cylinders are to be considered full unless properly identified as empty.
Empty cylinders should be returned to the supplier and not be permitted to accumulate. Do not leave an empty cylinder attached to a pressurized system. Gas cylinders in portable service shall be conveyed by suitable trucks to which they are securely fastened. During movement, cylinder caps should be in place. Compressed gas cylinders shall be legibly marked, for the purpose of identifying the gas content, with either the chemical or the trade name of the gas.