Nuclear core component hold-down assembly

Details Nuclear core component hold-down assembly Nuclear core component hold-down assembly

2011-08-09

2011-08-09

Mondt, Johannes P (Department: 3663)

Induced nuclear reactions: processes, systems, and elements

Reactor structures

Circulating fluid within reactor

C376S302000, C376S441000

Reexamination Certificate

active

07995701

ABSTRACT:
A plate mounted fuel assembly hold-down system that provides a defined channel for both the insertion and removal of reactor head mounted, fixed in-core detector instrumentation, provides a guided path for the fixed in-core detector during insertion, and shields the instrument shroud against coolant cross flow. The hold-down assembly includes a base plate that seats on the adapter plate of the fuel assembly and has openings that align with the control rod guide thimbles. A hollow sleeve extends through and below a central opening in the base plate to mate with the fuel assembly instrument thimble. The sleeve extends above the base plate and through and above an upper core plate of the reactor. A hold-down bar is slidably mounted on the sleeve and is restrained below the top of the sleeve. A spring is positioned around the sleeve and is captured between the hold-down bar and the base plate.

REFERENCES:
patent: 3354040 (1967-11-01), Frame et al.
patent: 3425905 (1969-02-01), Greenhalgh et al.
patent: 3977940 (1976-08-01), Frisch et al.
patent: 4078967 (1978-03-01), Anthony
patent: 4728487 (1988-03-01), Cooney et al.
patent: 4765947 (1988-08-01), Babin et al.
patent: 4820475 (1989-04-01), Mayers et al.
patent: 4966747 (1990-10-01), Tower et al.
patent: 4983351 (1991-01-01), Tower et al.
patent: 5057270 (1991-10-01), Chevereau
patent: 5078957 (1992-01-01), Tower et al.
patent: 5263060 (1993-11-01), Obermeyer
patent: 5265138 (1993-11-01), DeMario et al.
patent: 5357547 (1994-10-01), Obermeyer et al.
patent: 7085340 (2006-08-01), Goldenfield et al.
patent: 2002-317553 (2002-10-01), None
Academic Press Dicitionary of Science and Technology, copyright © 1992, 1996, electronicially retrieved from htpp:/www.credo.reference.com, “sleeve”.

Affiliated with

Also associated with

Rating

Nuclear core component hold-down assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Nuclear core component hold-down assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nuclear core component hold-down assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2708764