DEVICE FOR LAYING AN EXTRACTION SLEEVE IN A STEAM GENERATOR TUBE AND CORRESPONDING EXTRACTION METHOD FOR A TUBE SECTION

摘要

The fitting device comprises a guide sleeve 75 provided at one of its ends with connecting means 77 to corresponding means 87 disposed at a first end of an extraction sleeve 85, a holding cuff 100 provided at the 'one of its ends of removable connecting means to corresponding means disposed at the second end of the extraction sleeve 85 and means for fixing the retaining sleeve 100 on the inlet face 3ade the tube plate 3. The device also comprises means for fitting the extraction sleeve 85 and for fitting and controlling and extracting a glue injection syringe comprising an operating member 17 and an elongated transmission element 18 connected to one of its ends to the injection syringe and at its other end to the operating member 17. The extraction sleeve 85 can be connected to the guide sleeve 75 and to the holding sleeve 10 0 to be placed inside the tube 5 from which the extraction is carried out. The glue injection syringe is placed inside the sleeve 85 and manually controlled by means of the operating member 17 and the flexible transmission element 18. The invention also relates to a method of extraction of a portion of a generator tube remote from the ends of the tube.