What is the requirement for piping, tubing, fittings, gaskets, and packing material used in CNG services?

The requirement that piping, tubing, fittings, gaskets, and packing material used in CNG services must be compatible with the fuel under service conditions is essential for safety and efficiency. This compatibility ensures that the materials can withstand the chemical properties of compressed natural gas, preventing leaks or failures that could occur if the materials degrade or react adversely with CNG.

Using materials that are not compatible could lead to significant hazards, such as leaks, which pose risks of explosions, environmental harm, or operational inefficiencies. This requirement supports not only the integrity of the system but also complies with safety regulations and industry standards designed to protect personnel and property.

In contrast, materials that focus on ignition sources, fit, or the use of plastic alone do not address the critical nature of the compatibility of materials with the fuel itself, which is the primary focus of safe CNG service operations. Ensuring that all materials can handle the specific service conditions effectively mitigates potential risks associated with compressed natural gas.