How long must the initial pressure test be held to ensure safety?

The initial pressure test is crucial for ensuring the integrity and safety of medical gas lines. Holding the test until 100% of the joints have been examined for leakage is essential because it verifies that all connections and joints in the system are secure and free from potential leaks. This thorough examination is fundamental in preventing hazards like gas leaks, which can lead to dangerous situations in healthcare settings where the correct functioning of gas lines is critical.

When conducting pressure tests, it is standard practice to visually inspect every joint and connection while maintaining the test pressure for a specified duration. Achieving comprehensive coverage during this inspection helps identify any potential faults that could pose risks once the system is in operation. Therefore, the requirement to examine every joint ensures that nothing is overlooked, providing a higher level of safety and reliability for the medical gas system.