| 摘要 |
<p>PURPOSE: A dust material cleaning system for a steam generator of an atomic power plant is provided to prevent a safety accident in advance by discharging a foreign substance inserted between small tubes in the short term. CONSTITUTION: A nondestructive inspection device outputs the shape of a small tube (2) of a steam generator (1) and confirms and indicates the position a foreign substance (3) between small tubes. A route search device is formed in order to detect the shortest via distance for discharging the foreign substance located between the small tubes via the outer surface of the each small tube. A probe device is successively put on the each small tube based on the shortest via distance which is detected by the route search device and makes the foreign substance of a metal material maintain on the outer surface of the each small tube and discharges the foreign substance to outside.</p> |
