How frequently should standard weight high-pressure oxygen cylinders undergo hydrostatic testing?

Standard weight high-pressure oxygen cylinders are typically required to undergo hydrostatic testing every 5 years. This testing is crucial to ensure the integrity and safety of the cylinders, as it evaluates their ability to withstand pressure without leaking or bursting. The hydrostatic test involves filling the cylinder with water and pressurizing it to a specific level to check for any signs of weakness or failure.

Conducting hydrostatic tests at this interval helps in identifying any potential deterioration over time, thereby safeguarding the users and equipment that rely on the oxygen supply. Although other options suggest more frequent testing, the 5-year interval is the standard established by regulations and industry best practices, balancing safety with practical considerations for maintenance schedules.