Hose and tubing must be suitable for what type of conditions expected under normal operations?

The correct answer focuses on the need for hose and tubing to withstand the most severe pressure and temperature conditions that can occur during normal operations. This ensures safety and reliability in systems using compressed natural gas (CNG).

In CNG applications, the potential for fluctuations in both pressure and temperature is inherent due to the nature of gas compression and the operational environments. If the components are not designed to handle these extreme conditions, it could lead to failures, leaks, or catastrophic incidents, which poses serious risks to equipment and personnel.

Using materials that can endure the highest expected pressures and temperatures ensures that the hoses and tubing maintain their integrity over time and under varying operational conditions. Therefore, selecting components that are rated for these extreme situations is critical for the safe and efficient functioning of CNG systems.