Martin E Torres

US Patent:

6394765, May 28, 2002

Filed:

Oct 18, 2000

Appl. No.:

09/691363

Inventors:

John Geddes Erbes - Mountain View CA
Martin Rudy Torres - San Jose CA

Assignee:

General Electric Company - Schenectady NY

International Classification:

F04B 1700

US Classification:

417360, 2482306

Abstract:

A clamp apparatus for a jet pump slip joint in a boiling water nuclear reactor pressure vessel includes a C-yoke having an arcuate main portion, an engagement portion extending from a first end of the main portion, and a locking preload portion extending from a second end of the main portion. The engagement portion includes an engagement slot configured to receive a diffuser guide ear. The locking portion includes a threaded clamp bolt opening extending therethrough, and a clamp bolt threadedly engaging and extending through the clamp bolt opening. The clamp bolt includes a locking collar and a plurality of ratchet teeth spaced around the periphery of the locking collar. A locking spring engages the ratchet teeth of the clamp bolt to lock the clamp bolt in place and prevent the bolt from loosening.

US Patent:

6587535, Jul 1, 2003

Filed:

Jul 10, 2001

Appl. No.:

09/682017

Inventors:

John Geddes Erbes - Mountain View CA
Martin Rudy Torres - San Jose CA

Assignee:

General Electric Company - Schenectady NY

International Classification:

G21C 1900

US Classification:

376260, 376372, 376392

Abstract:

Methods for cutting a labyrinth seal in a nuclear reactor jet pump assembly are described. In one embodiment, the method includes removing an irradiated jet pump inlet mixer from the jet pump assembly, positioning the jet pump inlet mixer underwater, and cutting at least one circumferential groove in an inlet mixer outside surface.