Medical gas piping must be tested before use. Which test verifies the system is free of leaks and cross connections at operating conditions?

Giải thích

Medical gas systems require an initial pressure test, a standing-pressure leak test, and a cross-connection test to confirm each outlet delivers only its labeled gas, typically at 1.5 times the working pressure. A crossover between oxygen and another gas is a lethal hazard, so verification of correct gas at every station outlet is mandatory. Hydrostatic water testing is not used on gas.