Which of the following is NOT included in the requirements for compressed gas container safety?

The correct answer highlights that ventilation systems are not explicitly included in the requirements for the safety of compressed gas containers. The primary focus for compressed gas container safety revolves around ensuring that the containers themselves are maintained and handled appropriately to prevent accidents or hazardous situations.

Regular inspection is crucial because it helps identify any damage or wear that could lead to leaks or failures. Labeling classes of materials is also important for safety, as it informs users about the types of gases contained within the cylinders, helping to mitigate risks associated with mixing incompatible gases. Additionally, the segregation of incompatible materials is a critical safety measure, as it prevents dangerous reactions between different gases or liquids that can occur if they come into contact.

While ventilation systems are essential in facilities that handle gases to ensure a safe working environment, they are not a direct requirement specifically tied to the safety protocols for the containers themselves. Therefore, the absence of a ventilation system does not breach compressed gas container safety guidelines, whereas the other options directly impact the integrity and safety of the gas containers.