The pressure relief device must communicate with the fuel and withstand what type of pressure?

The requirement for a pressure relief device is to be able to communicate with the fuel and specifically withstand maximum pressure. This is critical to ensure the safety and integrity of the system because pressure relief devices are designed to mitigate excessive pressure buildup in a containment system, such as a CNG tank. When the internal pressure exceeds a predetermined set point, the relief device activates to release gas, preventing potential over-pressurization that could lead to system failure or catastrophic events.

Understanding maximum pressure is essential, as CNG systems operate under high pressures, and the relief mechanisms must be capable of managing these extreme conditions effectively. By focusing on maximum pressure, the design ensures that the system remains safe, functional, and reliable under all operational scenarios. This emphasis on maximum pressure is paramount for compliance with safety regulations and standards applicable to gas systems.