Hydrostatic testing is a method of testing the integrity of pipes, pipelines, and other pressure vessels. It involves filling the vessel with water and applying pressure to test its strength and ability to withstand the specified design pressure.

Hydrostatic testing is commonly used to test the integrity of new pipes and pipelines before they are put into service, as well as to periodically test existing pipelines to ensure that they are still safe and reliable.

Hydrostatic testing is an important step in ensuring the safety and reliability of pressure vessels, as it can identify defects and weaknesses that could cause leaks or other problems.

The test pressure is typically higher than the operating pressure of the vessel, and the vessel is carefully monitored during the test to ensure that it does not fail or rupture.