The initial pressure test for positive pressure gases ensures that the system is tested to prevent what kind of issue?

The initial pressure test for positive pressure gases is primarily aimed at preventing leakage within the system. During this test, the system is subjected to a specific pressure level beyond its normal operating pressure to check for integrity. This helps to identify any potential leaks that could compromise the safety and functionality of the medical gas system.

Leakage can lead to a loss of pressure, which may not only affect the delivery of gases to patients but can also pose significant safety risks. Ensuring that there are no leaks allows for the proper functioning of the medical gas system and guarantees that the gases remain contained within the system as intended.

In the context of the question, while cross-connections are crucial to identify in system design, the initial pressure test itself is primarily associated with checking for leaks. The other options, such as high pressure and temperature fluctuations, while important in the overall operation and maintenance of medical gas systems, are not directly addressed by the initial pressure testing specifically aimed at detecting leaks. Thus, the correct focus of the initial pressure test is indeed on leakage prevention.