When are steel and aluminum DOT containers required to undergo their first certification test?

Steel and aluminum DOT containers are required to undergo their first certification test 12 years after their manufacture. This requirement ensures that the containers remain safe and meet the regulatory standards for transporting liquefied petroleum gas and other hazardous materials. The testing process evaluates the integrity of the container and confirms that it can safely contain the gas under pressure.

After the initial certification test at the 12-year mark, ongoing inspections and tests are usually required at regular intervals, which helps to maintain safety standards and address any potential weaknesses that may have developed during use. The 12-year timeframe is established by regulations to promote safety in the handling and transporting of gas, thus reinforcing the importance of routine safety measures in the industry.