Hydrostatic pressure testing allows owners and supervisors over pressurized systems, such as pipelines and vessels, to easily locate leaks or ruptures. Technicians first fill the system to its maximum capacity with liquid (usually water), allowing them to perform a visual inspection identifying discontinuities. This nondestructive testing method is often used to verify that a component qualifies to return to service after being repaired. Our technicians select one among multiple hydrostatic pressure testing techniques according to the pressure system’s size and purpose. All versions of this method require that supervisors remove the involved equipment from service, however, as technicians cannot conduct hydrostatic pressure testing while a system is in use. Equipment commonly tested using hydrostatic pressure testing includes plumbing systems, boilers, pipelines, piping systems, fuel tanks, and gas cylinders.