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US4678624A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for loading fuel rods into a container

Assignee: Deutsche Gesellschaft fuer Wiederaufarbeitung von Kernbrennstoffen mbH
•
Filing: 1986-07-01
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Granted: 1987-07-07
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Expires: 2006-07-01
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Abstract

Abstract A method and an apparatus for loading containers with individual fuel rodsr fuel-rod sections of irradiated nuclear reactor fuel elements are disclosed. In order to ensure maximum safety, cleanliness and close packing when loading the containers, the fuel rods or fuel-rod sections are horizontally front-loaded into the container which is horizontally positioned. The loading aperture is located as closely as possible to the upper inner periphery of the container. Following their insertion, the fuel rods or fuel-rod sections will drop onto the inner wall surface of the container or onto the already existing pile of previously loaded fuel rods or fuel-rod sections. The container for loading with such a method has a loading aperture in the end wall thereof arranged close to the inner periphery thereof for insertion of the fuel rods or fuel-rod sections. The apparatus for loading containers in accordance with the method disclosed includes a loading trough which is insertable into a loading aperture in the container and serves to load the fuel rods or fuel-rod sections. The loading trough is capable of being rotated about its longitudinal axis whereupon the fuel rod or fuel-rod section drops down.

Inventors

  • 👤 Helfrid Lahr
  • 👤 Bernd Pontani

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 14:09
CPC Classifications
G; G21; G21F; G21F5/00; G21F5/005; G21F5/008; G21C; G21C19/00; G21C19/32; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/531

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 107 words
Method of loading a container with individual fuel rods separated from an irradiated nuclear reactor fuel element, the container having an end wall with an opening formed therein close to the inner periphery thereof, the method comprising: positioning said container in a horizontal position so that said opening is above the lower inner wall surface of said container; feeding said fuel rods into said container through said opening in a substantially horizontal direction; and, dropping said fuel rods inside said container so as to cause the same to fall down toward said lower inner wall surface thereby causing said fuel rods to pile up inside said container.
Claim 2
Dependent Claim 107 words
Method of loading a container with individual fuel rods separated from an irradiated nuclear reactor fuel element, the container having an end wall with an opening formed therein close to the inner periphery thereof, the method comprising: positioning said container in a horizontal position so that said opening is above the lower inner wall surface of said container; feeding said fuel rods into said container through said opening in a substantially horizontal direction; and, dropping said fuel rods inside said container so as to cause the same to fall down toward said lower inner wall surface thereby causing said fuel rods to pile up inside said container.
Claim 3
Dependent Claim 47 words
The method of claim 1, comprising the further steps of: applying a partial vacuum to the interior of said container as said fuel rods are fed into the latter; and, passing the air drawn from said interior through a filter before the withdrawn air leaves said container.
Claim 4
Dependent Claim 42 words
The method of claim 2, wherein said fuel rods are separated from said fuel elements and are fed toward said container in a first chamber, said container being positioned in a second chamber wherein said fuel rods are dropped into the same.
Claim 5
Dependent Claim 30 words
The method of loading a container of claim 1, comprising the further step of cutting said fuel rods into fuel-rod sections and then feeding said fuel-rod sections into said container.
Claim 6
Dependent Claim 47 words
The method of claim 4, comprising the further steps of: applying a partial vacuum to the interior of said container as said fuel-rod sections are fed into the latter; and, passing the air drawn from said interior through a filter before the withdrawn air leaves said container.

References Cited (Backward Citations)

US3677328A Cited
US4149087A Cited
US4183192A Cited
US4324523A Cited
EP0043096A1 Cited
EP0171774A2 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-07-06 1991-01-05 1991-07-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-07-06 1995-01-05 1995-07-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-07-06 1999-01-05 1999-07-07 $7700.00 Window Closed / Lapsed

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