What type of inspection must be conducted annually on each cargo tank?

The annual inspection of each cargo tank is designed to ensure the overall safety and integrity of the tank and its associated systems. Conducting an external and visual leakage test is crucial as it allows for the detection of any potential leaks or issues that may not be visible otherwise, ensuring that the tank is in compliance with safety standards.

This type of inspection involves examining the exterior surfaces of the tank for signs of wear, corrosion, or any other degradation that could lead to leaks. It also includes a visual evaluation of any fittings, valves, and connections, as these areas are often subject to wear and may require maintenance or repair to prevent leakage of liquefied petroleum gas.

By implementing an external and visual leakage test, inspectors can proactively identify and address any concerns before they escalate into more serious problems, thus maintaining safety for people and the environment. Other types of inspections, like internal leakage tests or pressure tests, may not be mandated on an annual basis or may not capture the same range of potential issues as the external and visual tests.