MARINE CREATURE INSERTION PREVENTING SCREEN DEVICE AND INSERTION PREVENTING METHOD THEREOF

PURPOSE:To prevent the insertion of maine creatures by constituting a marine creature insertion preventing a screen device of a wire net screen as the anode, a metal structure isolated from the screen as the cathode and a DC power supply device. CONSTITUTION:In the case steel materials are machined as a screen, there is a danger of generating local dissolution in natural corrosion, local dissolution causing elements are almost eliminated in the case an electric current is applied from the outside to dissolve, part contacting the steel materials with sea water is uniformly dissolved, and accordingly, size of structural materials of the screen is a line diameter and a plate thickness adding dissolution amount by load current to natural corrosion amount. After that, the whole surface of sea water immersion part of a metal net screen 11 is the anode in the sea water, a metal structure isolated from the screen 11 such as a steel pipe pile 5 is the cathode, an electric circuit is formed by a DC power supply device 4 supplying a DC current between the anode and cathode, and the screen 11 is dissolved with anode activation by performing DC electrolysis to control the insertion of the marine creatures to the screen 11.