What type of test should be performed on pressure vessels before use?

A pressure test is crucial for ensuring the integrity and safety of pressure vessels before they are put into use. This test involves filling the vessel with a suitable fluid and subjecting it to pressures that exceed normal operating conditions. The primary aim is to identify any weaknesses or potential failure points that may not be visible through a visual inspection alone.

Pressure testing helps confirm that the vessel can withstand operational demands without leaking or failing, which is essential for preventing accidents and ensuring the safety of personnel and equipment. Consequently, ensuring that the pressure vessel meets safety standards and regulations is a fundamental step in the steamfitting and construction industry. Visual inspections may help identify some obvious defects, but they do not provide the same level of assurance as a pressure test. Similarly, while weight tests and temperature resistance tests have their applications, they do not specifically assess the vessel's ability to withstand internal pressures and potential hazards associated with pressure containment.