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Title: Pellet inspection apparatus

Abstract

Apparatus for inspecting nuclear fuel pellets in a sealed container for diameter, flaws, length and weight. The apparatus includes, in an array, a pellet pick-up station, four pellet inspection stations and a pellet sorting station. The pellets are delivered one at a time to the pick-up station by a vibrating bowl through a vibrating linear conveyor. Grippers each associated with a successive pair of the stations are reciprocable together to pick up a pellet at the upstream station of each pair and to deposit the pellet at the corresponding downstream station. The gripper jaws are opened selectively depending on the state of the pellets at the stations and the particular cycle in which the apparatus is operating. Inspection for diameter, flaws and length is effected in each case by a laser beam projected on the pellets by a precise optical system while each pellet is rotated by rollers. Each laser and its optical system are mounted in a container which is free standing on a precise surface and is provided with locating buttons which engage locating holes in the surface so that each laser and its optical system is precisely set. The roller stands are likewise free standing and aremore » similarly precisely positioned. The diameter optical system projects a thin beam of light which scans across the top of each pellet and is projected on a diode array. The fl GOVERNMENT CONTRACT CLAUSE The invention herein described was made in the course of or under a contract or subcontract thereunder with the Department of Energy bearing No. EY-67-14-C-2170.« less

Inventors:
 [1];  [2];  [1]
  1. (Plum Borough, PA)
  2. (Churchill Borough, PA)
Issue Date:
Research Org.:
Hanford Engineering Development Lab., Richland, WA (USA)
OSTI Identifier:
864332
Patent Number(s):
4349112
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
DOE Contract Number:  
EY-76-C-14-2170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pellet; inspection; apparatus; inspecting; nuclear; fuel; pellets; sealed; container; diameter; flaws; length; weight; array; pick-up; station; stations; sorting; delivered; time; vibrating; bowl; linear; conveyor; grippers; associated; successive; pair; reciprocable; pick; upstream; deposit; corresponding; downstream; gripper; jaws; selectively; depending; particular; cycle; operating; effected; laser; beam; projected; precise; optical; rotated; rollers; mounted; free; standing; surface; provided; locating; buttons; engage; holes; precisely; set; roller; stands; likewise; similarly; positioned; projects; light; scans; top; diode; fl; government; contract; clause; described; course; subcontract; thereunder; department; energy; bearing; ey-67-14-c-2170; free standing; fuel pellet; fuel pellets; nuclear fuel; laser beam; diode array; sealed container; inspection apparatus; diameter optical; precisely positioned; pellet inspection; inspecting nuclear; /209/198/250/376/702/976/

Citation Formats

Wilks, Robert S., Taleff, Alexander, and Sturges, Jr., Robert H. Pellet inspection apparatus. United States: N. p., 1982. Web.
Wilks, Robert S., Taleff, Alexander, & Sturges, Jr., Robert H. Pellet inspection apparatus. United States.
Wilks, Robert S., Taleff, Alexander, and Sturges, Jr., Robert H. Fri . "Pellet inspection apparatus". United States. https://www.osti.gov/servlets/purl/864332.
@article{osti_864332,
title = {Pellet inspection apparatus},
author = {Wilks, Robert S. and Taleff, Alexander and Sturges, Jr., Robert H.},
abstractNote = {Apparatus for inspecting nuclear fuel pellets in a sealed container for diameter, flaws, length and weight. The apparatus includes, in an array, a pellet pick-up station, four pellet inspection stations and a pellet sorting station. The pellets are delivered one at a time to the pick-up station by a vibrating bowl through a vibrating linear conveyor. Grippers each associated with a successive pair of the stations are reciprocable together to pick up a pellet at the upstream station of each pair and to deposit the pellet at the corresponding downstream station. The gripper jaws are opened selectively depending on the state of the pellets at the stations and the particular cycle in which the apparatus is operating. Inspection for diameter, flaws and length is effected in each case by a laser beam projected on the pellets by a precise optical system while each pellet is rotated by rollers. Each laser and its optical system are mounted in a container which is free standing on a precise surface and is provided with locating buttons which engage locating holes in the surface so that each laser and its optical system is precisely set. The roller stands are likewise free standing and are similarly precisely positioned. The diameter optical system projects a thin beam of light which scans across the top of each pellet and is projected on a diode array. The fl GOVERNMENT CONTRACT CLAUSE The invention herein described was made in the course of or under a contract or subcontract thereunder with the Department of Energy bearing No. EY-67-14-C-2170.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

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