Silt screens are typically installed at the intake of the unit, primarily to prevent debris such as branches, weeds, floating objects, and aquatic plants from entering gates, valves, turbines, etc., to protect the equipment and ensure the normal operation of the power generation facilities. In hydropower stations, there are usually two silt screens: one is a floating silt screen, usually positioned upstream near the intake, which can float up and down with water level changes; the other is a fixed silt screen (removable), typically located at the intake. During operation, debris on the silt screens should be cleared promptly to minimize energy loss and prevent the screens from being collapsed by debris. Additionally, during major maintenance shutdowns, the silt screens should be inspected and repaired, including checking for any loose, deformed, or welded grid sections, and for any zinc coating or paint on the metal surface that may have peeled or rusted. Anti-corrosion treatments should be applied as needed, usually requiring maintenance every 3 to 5 years.