What safety feature should be present on all pressure vessels?

Pressure relief valves are essential safety features on all pressure vessels because they act as a critical safety mechanism designed to prevent the vessel from experiencing excessive internal pressure. When the internal pressure exceeds a predetermined limit, the pressure relief valve automatically opens to release some of the pressure, thus preventing potential hazards such as equipment failure, explosions, or catastrophic leaks.

The importance of pressure relief valves cannot be overstated, as they are crucial in maintaining safe operational conditions and safeguarding both personnel and equipment. Without these valves, pressure vessels would be at risk for dangerous pressure buildups, which can lead to significant safety incidents. In addition to enhancing overall safety, pressure relief valves are often mandated by various safety regulations and standards governing the design and operation of pressure vessels.

While other safety features, such as temperature gauges, emergency shutdown switches, and automatic refilling systems, can be important depending on the application, none serve the critical and specific purpose of managing pressure levels within a vessel like pressure relief valves do.