What are all brazed joints required to be examined for during the initial pressure test?

Brazed joints in piping systems, especially in medical gas installations, are critical points where leaks could compromise safety and efficacy. During the initial pressure test, it is essential to examine these joints for leaks to ensure that the system is secure and functioning properly.

The use of a leak detectant that is safe for oxygen is crucial because medical gas systems often transport gases that can be highly reactive, such as oxygen. Utilizing a leak detection method that is compatible with the materials and gases involved ensures that no harmful reactions occur and that an accurate assessment of the joint's integrity can be made.

Using soap, for example, may not be suitable in all contexts, particularly with reactive gases. Likewise, ammonia is inappropriate due to its corrosive nature and the potential hazards it poses in medical environments. Water can promote corrosion in certain metals and is generally not used in systems where gas integrity is paramount.

Thus, the requirement to use a leak detectant that is confirmed safe for use with oxygen reflects best practices that maintain safety and integrity in medical gas systems, ensuring reliable operation.