What is the required frequency for hydro testing a SCUBA cylinder according to D.O.T. regulations?

According to D.O.T. (Department of Transportation) regulations, SCUBA cylinders must undergo hydrostatic testing every 5 years. This testing is essential to ensure the integrity and safety of the cylinder, verifying that it can withstand the pressures encountered during use without risk of failure. Hydro testing involves filling the cylinder with water and pressurizing it to a defined level, allowing inspectors to examine it for any signs of leaks or structural compromise.

The importance of this 5-year interval is underscored by the need for regular evaluation of the cylinder's condition, especially since their operation involves high-pressure situations that could be dangerous if a cylinder were to fail. Regular hydrostatic testing not only enhances diver safety but also complies with regulatory requirements designed to protect users and promote safe diving practices.