Sleeving of steam generators

Details Sleeving of steam generators Sleeving of steam generators

1985-10-07

1988-09-20

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291573R, 29252, 29254, 29726, 29906, 376271, 254 29R, B21D 5300, B23P 1904

Patent

active

047715260

ABSTRACT:
A tool for inserting sleeve blanks in damaged steam-generator tubes of light weight capable of being manipulated by ROSA, a remotely operated service arm. ROSA permits the tool to be attached externally of the channel head of the steam generator.
The tool includes a fixed gripper and a moveable gripper. The gripping member of each gripper is a flexible sheet or bladder which conforms readily to the surface being engaged. For insertion, the sleeve blank is mounted on a mandrel. The insertion is carried out by operating the grippers repeatedly through the following cycle until the sleeve blank is inserted into the damaged tube:

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