METHOD FOR VISUALIZATION AND IDENTIFICATION UNDER WATER OF NUCLEAR FUEL ASSEMBLY AND INSTALLATIONS USING THE SAME

摘要

Methods and installations for the identification and / or visualization underwater by a camera (1) of fuel assemblies (2) or the like submerged in a pool during the loading, unloading or reloading operations of a nuclear reactor ( 3) characterized in that the advantageously removable camera (1) is arranged in the transfer pool (6) and rests vertically with the lens down, at a determined altitude and at an angular position in the horizontal plane, in a vertical sleeve (10 ) cylindrical, of axis coincident with that of the camera (1), emerging above the level (11) of the water by being closed by a watertight plug (12) and provided with means (39) forming a biological screen (13) to protect the camera (1) and the zoom (21) from radioactive radiation, an optical deflection device (9) being secured to the vertical sleeve (10) by suitable means (41, 47) in the optical axis (14) of the camera (1) and below it lle according to permanent, adjustable or variable positions providing a return (15) of the optical axis (14) in a beam capable of viewing or identifying at least the assembly (2).