Читать книгу Fabrication of Metallic Pressure Vessels - Maan H. Jawad - Страница 28

Pressure testing is most often performed using water or other comparably incompressible fluids. Hydrotest of a single vessel is usually accomplished by filling it, pumping to pressure, holding, and draining the vessel. For single vessels, the water is usually dumped after use, and pumping is accomplished using a small positive displacement pump.

If the quantity of vessels produced in accordance with a particular vessel design is such that multiple vessels are tested daily, then it is common to set up test fixtures and to salvage and recycle the water. As with other means employed to reduce per unit cost, the savings must be weighed against the up‐front cost of fixturing, constructing a reservoir, etc.