How often should nitrogen, argon, and carbon dioxide cylinders be hydro tested?

The correct interval for hydro testing nitrogen, argon, and carbon dioxide cylinders is every 5 years. This requirement is established to ensure the safety and integrity of gas cylinders, as they can be subject to high pressures and potential degradation over time. Hydro testing is a critical safety measure that evaluates the structural integrity of the cylinders, checking for weaknesses or leaks that could be dangerous if not addressed.

By requiring this testing every 5 years, regulatory bodies aim to minimize the risk of catastrophic failures while maintaining the cylinders' functionality for storage and transportation of gases. Understanding this maintenance protocol is essential for anyone involved in handling or using gas cylinders as part of their safety responsibilities.