How often must a DOT Composite Cylinder propane container be recertified?

A DOT Composite Cylinder propane container must be recertified every 5 years. This requirement ensures the safety and integrity of the cylinder for storage and transportation of propane gas. The recertification process involves a thorough inspection to check for any signs of wear, damage, or degradation of the material used in the cylinder's construction. This periodic assessment is crucial because composite materials can degrade over time due to environmental factors, making it vital to ensure that the cylinders remain safe for continued use. By adhering to this 5-year recertification interval, operators can help prevent potential hazards associated with compromised propane storage.