How often must aluminum, steel, and carbon-fiber cylinders be hydrostatically tested?

Hydrostatic testing is a crucial safety procedure for ensuring that cylinders used to store gases, including aluminum, steel, and carbon-fiber cylinders, are safe for continued use. The correct interval for hydrostatic testing of these cylinders is every 5 years. This is in accordance with regulations set forth by organizations such as the U.S. Department of Transportation (DOT) and other relevant standards that provide guidelines for maintaining the structural integrity and safety of the cylinders.

During hydrostatic testing, the cylinder is filled with water and pressurized to a level above its normal operating pressure. This test helps identify any weaknesses, leaks, or deformities that may have developed over time. By requiring the testing to occur every 5 years, it ensures that cylinders are regularly assessed for safety, minimizing the risk of catastrophic failure during use.

Understanding the frequency of hydrostatic testing is vital for fire service personnel and others who rely on high-pressure gas cylinders, as it directly impacts the safety of both the personnel using the cylinders and the operations conducted with them.