What is the purpose of a containment vessel?

The purpose of a containment vessel is primarily to confine a leaking compressed gas container. This function is critical in preventing the release of hazardous materials into the environment, which can occur if a leak develops. Containment vessels are designed to safely contain such leaks, minimizing the risk of exposure to potentially harmful gases and ensuring that any released content is contained in a controlled manner.

In the context of medical gases, where pressure and the potential for leaks require stringent safety measures, a containment vessel plays a vital role in the overarching safety protocols. It allows for safe management of leaks, protecting both personnel and the environment from the dangers associated with compressed gases.

In contrast, while the other options relate to functions that may involve hazardous materials, they do not accurately define the specific purpose of a containment vessel. Storing cryogenic fluids, transporting hazardous materials, or serving as an energy source are roles that do not align with the primary role of a containment vessel, which emphasizes safety and containment rather than storage, transport, or energy production.