What is the requirement for ASME Connections for pressure relief valves?

The requirement for ASME connections for pressure relief valves mandates that they must have direct communication with the vapor space. Pressure relief valves are essential safety devices that protect pressurized systems from exceeding their design limits. Ensuring that these valves communicate directly with the vapor space allows them to effectively sense the pressure within the container and relieve excess pressure when necessary.

This design is based on the principle that pressure relief valves need to operate accurately under fluctuating pressure conditions. If a valve were to communicate with the liquid space rather than the vapor space, the valve could become ineffective, resulting in the potential for dangerous conditions should the pressure rise too high.

The other options do not meet the criteria necessary for proper function and safety of the pressure relief valves as dictated by ASME standards. For instance, having indirect communication with liquid space could hinder the valve's responsiveness. Random placement of the valve could lead to improper functioning and safety risks. Certification of technicians is important for installation quality, but it does not specifically pertain to the design and operational requirements of the pressure relief valve connections.