In CNG systems, what is a "tightness test"?

The definition of a "tightness test" in CNG systems revolves around the importance of ensuring the integrity and safety of the fuel system. This inspection specifically focuses on checking for leaks within the entire fuel system while it is under pressure. By performing a tightness test, operators can detect any potential leaks that might pose safety hazards, such as fire or explosion risks due to the highly flammable nature of CNG.

Conducting a tightness test helps ensure that the system functions properly and minimizes the risk of fuel leakage, which is crucial for safe CNG operations. This kind of test is essential for compliance with safety standards and regulations governing the use of gaseous fuels, as it helps to maintain the operational reliability and safety of the system.