What is the minimum rated service pressure for fuel supply cylinders?

Answer: B — 2,400 psig

The minimum rated service pressure for fuel supply cylinders used for Compressed Natural Gas (CNG) is set at 2,400 psig. This rating ensures that the cylinders can safely store and deliver CNG at pressures that are typical for vehicle fuel systems. CNG vehicles operate efficiently and effectively at this pressure level, as it allows for optimal performance without compromising safety. Using cylinders with a pressure rating lower than this standard could lead to inadequate fuel delivery and potential safety hazards. Therefore, adhering to the 2,400 psig standard is crucial for ensuring safe and reliable operations of CNG fuel systems.