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Title: Automated closure system for nuclear reactor fuel assemblies

Abstract

A welder for automated closure of fuel pins by a pulsed magnetic process in which the open end of a length of cladding is positioned within a complementary tube surrounded by a pulsed magnetic welder. Seals are provided at each end of the tube, which can be evacuated or can receive tag gas for direct introduction to the cladding interior. Loading of magnetic rings and end caps is accomplished automatically in conjunction with the welding steps carried out within the tube.

Inventors:
;
Publication Date:
OSTI Identifier:
5860412
Patent Number(s):
US 4542267
Application Number:
TRN: 86-017836
Assignee:
The United States of America as represented by the United States Department of Energy IFI; EDB-86-101137
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 30 Nov 1982; Other Information: PAT-APPL-445620
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; FUEL PINS; CLOSURES; MAGNETIC FORCE WELDING; WELDING MACHINES; AUTOMATION; DESIGN; FUEL ASSEMBLIES; FUEL-CLADDING INTERACTIONS; SEALS; FABRICATION; FUEL ELEMENTS; JOINING; REACTOR COMPONENTS; WELDING; 220300* - Nuclear Reactor Technology- Fuel Elements

Citation Formats

Christiansen, D. W., and Brown, W. F. Automated closure system for nuclear reactor fuel assemblies. United States: N. p., 1985. Web.
Christiansen, D. W., & Brown, W. F. Automated closure system for nuclear reactor fuel assemblies. United States.
Christiansen, D. W., and Brown, W. F. 1985. "Automated closure system for nuclear reactor fuel assemblies". United States. doi:.
@article{osti_5860412,
title = {Automated closure system for nuclear reactor fuel assemblies},
author = {Christiansen, D. W. and Brown, W. F.},
abstractNote = {A welder for automated closure of fuel pins by a pulsed magnetic process in which the open end of a length of cladding is positioned within a complementary tube surrounded by a pulsed magnetic welder. Seals are provided at each end of the tube, which can be evacuated or can receive tag gas for direct introduction to the cladding interior. Loading of magnetic rings and end caps is accomplished automatically in conjunction with the welding steps carried out within the tube.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1985,
month = 9
}
  • A welder for automated closure of fuel pins by a pulsed magnetic process in which the open end of a length of cladding is positioned within a complementary tube surrounded by a pulsed magnetic welder. Seals are provided at each end of the tube, which can be evacuated or can receive tag gas for direct introduction to the cladding interior. Loading of magnetic rings and end caps is accomplished automatically in conjunction with the welding steps carried out within the tube.
  • A system for recharging fuel assemblies of a nuclear reactor is described. It consists of a hermetically sealed chamber on whose bottom there is a movable platform of a recharging machine which charges the reactor with new fuel assemblies, removes spent fuel assemblies from the reactor, and transports spent fuel assemblies from the reactor to a place of storage. In the bottom of the hermetically sealed chamber there are channels which communicate with an intermediary distribution chamber arranged in the reactor vessel and the places for storing spent and new fuel assemblies. Between the channels of the reactor vessel andmore » the channel of the container for storing spent fuel assemblies, i.e. on the path along which spent fuel assemblies are transported, in the bottom of the hermetically sealed chamber there is a jut. A series of movably interconnected cars with overhead covers are placed between adjoining cars which are moved into and out of the hermetically sealed chamber through a hermetically sealed hatch.« less
  • A fuel assembly is described in which the fuel rods are arranged in a hexagonal or square, regular pattern, but in which single rods are omitted systematically and deflectors substituted. Each deflector is normally situated in a duct, the partition of which consists of six or eight fuel rods, respectively. The deflectors are rigidly connected to grids between the fuel rods so that the rods may expand freely in the grids. (Official Gazette)