What document is necessary for a transport container to operate in CNG service?

To operate a transport container in Compressed Natural Gas (CNG) service, having a CNG service authorization is essential. This document signifies that the transport container has met all the stringent regulatory and safety requirements necessary for handling CNG. It ensures that the container is suitable for the specific pressures and characteristics associated with CNG, which is crucial given the high-pressure nature of this fuel.

The CNG service authorization encompasses aspects such as design approval, safety standards compliance, and specific inspections that a container must undergo before it can be used for CNG transport. By obtaining this authorization, transport operators demonstrate adherence to safety protocols, thus minimizing the risk of accidents and ensuring the safe delivery of CNG. Without this authorization, the transport container cannot legally operate in CNG service, which is vital for maintaining safety standards in the industry.