What type of barricades should be placed at the ends of tanks being tested?

Warning barricades should be placed at the ends of tanks being tested to ensure the safety of personnel and the public. These barricades serve to alert individuals in the vicinity of the testing activity, signaling that there is a potential hazard in the area.

Warning barricades are typically more substantial and visible than construction cones or colorful flags, providing a clear indication of restricted access. They are designed to effectively convey danger and deter unauthorized entry into the testing zone, which is crucial in maintaining safety standards during tank testing operations. Using warning barricades reflects compliance with safety regulations that aim to protect both workers and the public from any risks associated with the testing process.

While other options, such as traffic barriers, could potentially provide containment, they are not specifically designed for indicating testing operations and might not be as effective in communicating safety hazards in this context.