Leak detection procedures should be implemented prior to use of any system using compressed gas. Allow it to remain isolated until the gas has discharged, making certain that appropriate warnings have been posted. if the gas is corrosive, remove the cylinder to an isolate, well-ventilated area, away from incompatibles. The stream of leaking gas should be directed into an appropriate neutralizing material. Be especially cautious that the reactant is not allowed to be sucked back into the cylinder where further dangerous chemical reaction could occur. Instead, contact the supplier and ask for response instructions.
Cylinders have a finite life expectancy.
This is especially true for cylinders containing corrosive materials.