Always transport cylinders by means of a handtruck or other mechanical means. If absolutely necessary to move them by hand, roll then on the bottom edge, never drag them. Do not drop cylinders or allow them to strike each other. Always store cylinders secured in the upright position. When in doubt, always consider cylinders to be full and handle them accordingly.
Many accidents occur when containers under partial pressure are thought to be empty.
Treat cylinders gently. Place the cylinder as far away from flames or sparks as possible. Notify a supervisor. Post warning signs. It is usually safer to open the release valve a little to let out the compressed gas gradually.