skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Apparatus for inspecting fuel elements

Abstract

This disclosure describes an alpha monitor usable in an automated nuclear fuel pin loading and processing unit. Fuel pins or other elongated pins are fed laterally into the alpha monitor in a singular fashion and are translated by a first roller assembly into a weld flare machining and decontamination substation not forming a part of the invention. Pins return and are lifted upwardly and transferred across to a combined pin lifting and electrode operating means which lifts the pins upwardly into a clamshell electrode assembly which is spread open by a combined pin lifting and electrode operating means. Once inserted the clamshell type electrode arrangement closes around the fuel pins so that inspection can occur. Fuel pins are inspected by charging electrodes to a negative potential and measuring the change in charge occurring when positively charged alpha particles strike the negatively charged electrodes. After inspection, the fuel pins are lowered by the pin lifting and electrode operating means into a second roller assembly which longitudinally conveys approved pins from the airtight enclosure in which the alpha monitor is mounted. If the fuel pins are rejected then they are moved laterally by a second transfer means and onto another system formore » further processing.« less

Inventors:
; ;
Issue Date:
Research Org.:
Hanford Engineering Development Lab., Richland, WA (United States)
OSTI Identifier:
6462350
Application Number:
ON: DE87007261
Assignee:
Dept. of Energy
DOE Contract Number:  
AC06-76FF02170
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 42 ENGINEERING; FUEL PINS; INSPECTION; REMOTE HANDLING; ALPHA DETECTION; AUTOMATION; COVERINGS; PLUTONIUM OXIDES; URANIUM OXIDES; ACTINIDE COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLE DETECTION; DETECTION; FUEL ELEMENTS; OXIDES; OXYGEN COMPOUNDS; PLUTONIUM COMPOUNDS; RADIATION DETECTION; REACTOR COMPONENTS; TRANSURANIUM COMPOUNDS; URANIUM COMPOUNDS; 220300* - Nuclear Reactor Technology- Fuel Elements; 420203 - Engineering- Handling Equipment & Procedures

Citation Formats

Kaiser, B J, Oakley, D J, and Groves, O J. Apparatus for inspecting fuel elements. United States: N. p., 1984. Web.
Kaiser, B J, Oakley, D J, & Groves, O J. Apparatus for inspecting fuel elements. United States.
Kaiser, B J, Oakley, D J, and Groves, O J. Fri . "Apparatus for inspecting fuel elements". United States.
@article{osti_6462350,
title = {Apparatus for inspecting fuel elements},
author = {Kaiser, B J and Oakley, D J and Groves, O J},
abstractNote = {This disclosure describes an alpha monitor usable in an automated nuclear fuel pin loading and processing unit. Fuel pins or other elongated pins are fed laterally into the alpha monitor in a singular fashion and are translated by a first roller assembly into a weld flare machining and decontamination substation not forming a part of the invention. Pins return and are lifted upwardly and transferred across to a combined pin lifting and electrode operating means which lifts the pins upwardly into a clamshell electrode assembly which is spread open by a combined pin lifting and electrode operating means. Once inserted the clamshell type electrode arrangement closes around the fuel pins so that inspection can occur. Fuel pins are inspected by charging electrodes to a negative potential and measuring the change in charge occurring when positively charged alpha particles strike the negatively charged electrodes. After inspection, the fuel pins are lowered by the pin lifting and electrode operating means into a second roller assembly which longitudinally conveys approved pins from the airtight enclosure in which the alpha monitor is mounted. If the fuel pins are rejected then they are moved laterally by a second transfer means and onto another system for further processing.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {12}
}