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Title: Fuel rod assembly to manifold attachment

Abstract

A fuel element is formed with a plurality of fuel rod assemblies detachably connected to an overhead support with each of the fuel rod assemblies having a gas tight seal with the support to allow internal fission gaseous products to flow without leakage from the fuel rod assemblies into a vent manifold passageway system on the support. The upper ends of the fuel rod assemblies are located at vertically extending openings in the support and upper threaded members are threaded to the fuel rod assemblies to connect the latter to the support. The preferred threaded members are cap nuts having a dome wall encircling an upper threaded end on the fuel rod assembly and having an upper sealing surface for sealing contact with the support. Another and lower seal is achieved by abutting a sealing surface on each fuel rod assembly with the support. A deformable portion on the cap nut locks the latter against inadvertent turning off the fuel rod assembly. Orienting means on the fuel rod and support primarily locates the fuel rods azimuthally for reception of a deforming tool for the cap nut. A cross port in the fuel rod end plug discharges into a sealed annulusmore » within the support, which serves as a circumferential chamber, connecting the manifold gas passageways in the support.« less

Inventors:
 [1];  [1];  [1]
  1. (San Diego, CA)
Issue Date:
Research Org.:
General Atomic Co., San Diego, Calif.
OSTI Identifier:
863500
Patent Number(s):
4189348
Assignee:
General Atomic Company (San Diego, CA) OSTI
DOE Contract Number:  
EY-76-C-03-0167
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fuel; rod; assembly; manifold; attachment; element; formed; plurality; assemblies; detachably; connected; overhead; support; gas; tight; seal; allow; internal; fission; gaseous; products; flow; leakage; passageway; upper; located; vertically; extending; openings; threaded; connect; latter; preferred; cap; nuts; dome; wall; encircling; sealing; surface; contact; achieved; abutting; deformable; portion; nut; locks; inadvertent; orienting; means; primarily; locates; rods; azimuthally; reception; deforming; tool; plug; discharges; sealed; annulus; serves; circumferential; chamber; connecting; passageways; sealing contact; vertically extending; rod assembly; fuel rods; fuel element; fuel rod; gaseous product; gaseous products; sealing surface; fission gas; rod assemblies; tight seal; detachably connected; gas tight; upper sealing; manifold gas; /376/976/

Citation Formats

Donck, Harry A., Veca, Anthony R., and Snyder, Jr., Harold J. Fuel rod assembly to manifold attachment. United States: N. p., 1980. Web.
Donck, Harry A., Veca, Anthony R., & Snyder, Jr., Harold J. Fuel rod assembly to manifold attachment. United States.
Donck, Harry A., Veca, Anthony R., and Snyder, Jr., Harold J. Tue . "Fuel rod assembly to manifold attachment". United States. https://www.osti.gov/servlets/purl/863500.
@article{osti_863500,
title = {Fuel rod assembly to manifold attachment},
author = {Donck, Harry A. and Veca, Anthony R. and Snyder, Jr., Harold J.},
abstractNote = {A fuel element is formed with a plurality of fuel rod assemblies detachably connected to an overhead support with each of the fuel rod assemblies having a gas tight seal with the support to allow internal fission gaseous products to flow without leakage from the fuel rod assemblies into a vent manifold passageway system on the support. The upper ends of the fuel rod assemblies are located at vertically extending openings in the support and upper threaded members are threaded to the fuel rod assemblies to connect the latter to the support. The preferred threaded members are cap nuts having a dome wall encircling an upper threaded end on the fuel rod assembly and having an upper sealing surface for sealing contact with the support. Another and lower seal is achieved by abutting a sealing surface on each fuel rod assembly with the support. A deformable portion on the cap nut locks the latter against inadvertent turning off the fuel rod assembly. Orienting means on the fuel rod and support primarily locates the fuel rods azimuthally for reception of a deforming tool for the cap nut. A cross port in the fuel rod end plug discharges into a sealed annulus within the support, which serves as a circumferential chamber, connecting the manifold gas passageways in the support.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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