Whenever a large or uncontrollable leak occurs, evacuate the area and immediately contact Public Safety at 911. G. Empty Cylinders Remove the regulator and replace the cylinder cap. Mark the cylinder as empty or MT and store in a designated area for return to the supplier. Do not store full and empty cylinders together. Do not have full and empty cylinders connected to the same manifold.
Reverse flow can occur when an empty cylinder is attached to a pressurized system.
Do not refill empty cylinders. Only the cylinder supplier should refill gases. The residual contents may become contaminated with air. Lecture bottles should always be returned to the distributor or manufacturer promptly when no longer needed. Do not purchase lecture bottles that cannot be returned.