What must compression equipment used with CNG include?

Compression equipment used with Compressed Natural Gas (CNG) must include pressure relief devices to ensure safety during operation. These devices are crucial for preventing excessive pressure buildup in the system, which can occur due to a variety of factors such as changes in temperature or equipment malfunctions. A pressure relief device functions by automatically releasing gas when the pressure exceeds a predetermined limit, thereby protecting the integrity of the equipment and preventing potential hazards like explosions or leaks.

While temperature control systems, waste disposal mechanisms, and regular maintenance schedules are important in various contexts, they are not specifically mandated as essential components of compression equipment in relation to safety measures associated with pressure management. Pressure relief devices specifically address the risks associated with high pressures inherent in CNG compression, making them a foundational requirement for safe operation.