FUEL ELEMENT CONSTRUCTION

Title: FUEL ELEMENT CONSTRUCTION

Full Record
Other Related Research

Abstract

A method of preventing diffusible and volatile fission products from diffusing through a fuel element container and contaminating reactor coolant is described. More specifically, relatively volatile and diffusible fission products either are adsorbed by or react with magnesium fluoride or difluoride to form stable, less volatile, less diffusible forms. The magnesium fluoride or difluoride is disposed anywhere inwardly from the outer surface of the fuel element container in order to be contacted by the fission products before they reach and contaminate the reactor coolant. (AEC)

Inventors:: Simnad, M.T.

Issue Date:: 1961-08-15

Research Org.:: Originating Research Org. not identified

OSTI Identifier:: 4014790

Patent Number(s):: 2996444

Assignee:: U.S. Atomic Energy Commission DTIE; NSA-15-025618

NSA Number:: NSA-15-025618

Resource Type:: Patent

Resource Relation:: Other Information: Orig. Receipt Date: 31-DEC-61

Country of Publication:: United States

Language:: English

Subject:: REACTOR TECHNOLOGY; ADSORPTION; CHEMICAL REACTIONS; CONFIGURATION; CONTAMINATION; COOLANT LOOPS; DIFFUSION; DISTRIBUTION; FISSION PRODUCTS; FLUORIDES; FUEL CANS; FUEL ELEMENTS; GASES; MAGNESIUM COMPOUNDS; PATENT; REACTORS; VOLATILITY

Citation Formats


                    Simnad, M.T. FUEL ELEMENT CONSTRUCTION.  United States: N. p., 1961. 
        Web.

Copy to clipboard


                    Simnad, M.T. FUEL ELEMENT CONSTRUCTION.  United States.

Copy to clipboard


                    Simnad, M.T. Tue .  
        "FUEL ELEMENT CONSTRUCTION".  United States.

Copy to clipboard


                    
@article{osti_4014790,

  title        = {FUEL ELEMENT CONSTRUCTION},

  author       = {Simnad, M.T.},

  abstractNote = {A method of preventing diffusible and volatile fission products from diffusing through a fuel element container and contaminating reactor coolant is described. More specifically, relatively volatile and diffusible fission products either are adsorbed by or react with magnesium fluoride or difluoride to form stable, less volatile, less diffusible forms. The magnesium fluoride or difluoride is disposed anywhere inwardly from the outer surface of the fuel element container in order to be contacted by the fission products before they reach and contaminate the reactor coolant. (AEC)},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1961},

  month        = {8}

}

Copy to clipboard

Patent:

Search for the full text at the U.S. Patent and Trademark Office

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Patents and OSTI.GOV collections:

FUEL ELEMENT CONSTRUCTION

Patent Zumwalt, L.R.

Fuel elements having a solid core of fissionable material encased in a cladding material are described. A conversion material is provided within the cladding to react with the fission products to form stable, relatively non- volatile compounds thereby minimizing the migration of the fission products into the coolant. The conversion material is preferably a metallic fluoride, such as lead difluoride, and may be in the form of a coating on the fuel core or interior of the cladding, or dispersed within the fuel core. (AEC)
NUCLEAR REACTOR FUEL ELEMENT AND METHOD FOR PRODUCING SUCH FUEL ELEMENT

Patent Walker, C.J.

Fuel elements with improvedd heat transfer propertiess are produced by sandwiching a layer of metal containing small elongated cells for the fuel material between two layers of cladding metal that are stressed to resist internal gas pressures. High fuel temperatures are avoided since heat from the fuel cell can pass parallel to the element surface into the central ply and then proceed perpendicularly to the element surface. The metal surrounding the fuel cells is all of higher conductivity than the fuel. (D.C.W.)
Nuclear fuel element with axially aligned fuel pellets and fuel microspheres therein

Patent Sease, J.D. ; Harrington, F.E.

Elongated single- and multi-region fuel elements are prepared by replacing within a cladding container a coarse fraction of fuel material which includes plutonium and uranium in the appropriate regions of the fuel element and then infiltrating with vibration a fine-sized fraction of uranium-containing microspheres throughout all interstices in the coarse material in a single loading. The fine, rigid material defines a thin annular layer between the coarse fraction and the cladding to reduce adverse mechanical and chemical interactions. (Official Gazette)
IMPROVEMENTS IN THE CONSTRUCTION OF NUCLEAR REACTOR FUEL ELEMENT ASSEMBLIES.

Patent Walsh, S.
NUCLEAR FUEL ELEMENT CONSTRUCTION

Patent None

A reactor fuel element is described with means for retaining volatile fission products within the element. The means comprises a fluoride conversion material for reacting with the barium and cesium fission products to form relatively involatile fluorides, and it is located inside the fuel containers, preferably as a coating on the outer surface of the fuel body or compact. The conversion material is a fluoride of Pb, Mg, Zr, Ce, Fe, or Cr. This method of retaining fission products is especially useful in the case where the fuel container is made of graphite. (D.L.C.)

Similar Records