During the 5-year pressure test, what is used to pressurize a pipeline and for how many hours should the pressure be maintained?

In a 5-year pressure test, the appropriate method to pressurize a pipeline typically involves using a hand pump. This testing method is essential for ensuring the integrity of the pipeline by confirming that it can maintain required pressure levels without leakage or failure.

The standard duration for which the pressure should be maintained during such a test is often established at 4 hours. This extended duration allows for a thorough assessment of the pipeline's ability to sustain pressure and also provides a reliable window for detecting any potential weaknesses or leaks that may not be immediately apparent in a shorter test.

Using a hand pump for the pressurization process is preferred in many instances because it allows for precise control over the pressure being applied, making it suitable for detailed inspections and ensuring that the levels remain constant throughout the testing period. This approach aligns with the best practices and technical guidelines often outlined in maintenance protocols for pipeline systems.