Following the exploration and maintenance of a network of tubes of a list of steam, of the type of system, polygonal, deformable.

摘要

The invention relates to a vehicle for exploration and maintenance (100) making it possible to position checking or maintenance tools facing each tube of the steam generator, the said vehicle including a plurality of members (1) with variable extension which are articulated together in order to constitute a polygonal system which can be deformed within its plane, and expandable and telescopic fastening fingers (12) allowing the vehicle to hold itself under the perforated plate (P) by fastening into the network of tubes (T) and to move against the said plate. In accordance with the invention, the vehicle (100) includes a telescopic tool-holder (101) carried by one of the members (1) with variable extension of the deformable polygonal system, being located outside the said system, the said tool-holder being movable within the plane of this deformable polygonal system so as to allow the exploration and maintenance of several tubes (T) for each fastening position of the said vehicle (100). Application to the checking and maintenance of the network of tubes of a steam generator. IMAGE