What is the service life limit for a DOT 3HT oxygen cylinder?

The service life limit for a DOT 3HT oxygen cylinder is established at 24 years or 4380 filling cycles, which reflects both the durability of the cylinder material and the safety protocols associated with its use. This specific lifespan ensures that the cylinder can maintain safe structural integrity under the pressures and conditions it will face during its usage. The limit is measured in both years and filling cycles because it is important not only to assess the calendar age of the cylinder but also the frequency of its use.

Choosing this limit ensures that operators monitor the condition of the cylinder through regular inspections and maintenance, adhering to the guidelines set forth by regulatory organizations. The focus on a multi-faceted approach to determining service life helps in preventing potential failures that could arise from cycling stresses or material degradation over time.