Why must the CNG service hose be continuously marked?

The continuous marking of the CNG service hose is essential to ensure safety and identification. A well-marked hose provides crucial information regarding its intended use, operating pressure, and compatibility with CNG, which is vital for preventing accidents and ensuring proper handling. This identification is particularly important in environments where multiple types of hoses and gases may coexist, helping operators quickly and accurately identify the correct equipment for the job. Continuous markings can include safety warnings, usage instructions, and specifications, all of which contribute to the safe operation and maintenance of natural gas systems. This focus on safety is a fundamental aspect of regulatory compliance and operational efficiency in the handling of compressed natural gas.

Aesthetic reasons do not constitute a justification for marking the service hose, as markings primarily serve functional purposes related to safety and identification. While compliance with international standards is important, the specific requirement for continuous marking directly addresses the need for clear identification and safety in practical scenarios. Furthermore, indicating the manufacturer’s logo is not the primary goal of the marking; rather, it is to ensure that the hose can be safely and effectively used in the application for which it is designed.