Hydrostatic testing, also known as hydro testing, is a nondestructive testing method that calls for maximizing the water pressure inside a component to analyze its strength and identify areas that may be vulnerable to leaks or ruptures. Technicians first fill the subject with water, which forces air out of the vessel and allows pressurized pumping to see if the water leaks through cracks in the vessel walls. A visual inspection to detect any leaks is performed by the Technician. There are many different hydro testing techniques, with the most effective method typically depending on the component’s size.