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Title: High speed radiation scanning technique for simultaneously determining the pitch and eccentricity of an encased oil

Abstract

A method of determining the pitch and eccentricity of the winding of a coil unit is provided. It specifically relates to nondestructively examining completely encased heating coils used to simulate the heat generated from fuel rods in reactor studies. The method comprises (1) the use of an x-ray transmission technique through the axial centerline of the coil unit after the winding of the coil unit has been completely encased, (2) the use of a radiation detection instrument to monitor the transmitted radiation, and (3) the use of recording instrumentation calibrated as a function of the distance between windings. A change in the pitch of the winding is detected by a general increase or decrease in the distance between recorded peaks of the transmitted radiation. Eccentricity is detected by a consistent variation in distance between peaks occuring in alternate pairs.

Inventors:
 [1]
  1. Oak Ridge, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
862732
Patent Number(s):
3999067
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
speed; radiation; scanning; technique; simultaneously; determining; pitch; eccentricity; encased; oil; method; winding; coil; unit; provided; specifically; relates; nondestructively; examining; completely; heating; coils; simulate; heat; generated; fuel; rods; reactor; studies; comprises; x-ray; transmission; axial; centerline; detection; instrument; monitor; transmitted; recording; instrumentation; calibrated; function; distance; windings; change; detected; increase; decrease; recorded; peaks; consistent; variation; occuring; alternate; pairs; fuel rods; method comprises; fuel rod; radiation detection; heat generated; x-ray transmission; axial centerline; method comprise; coil unit; simultaneously determining; reactor studies; detection instrument; heating coil; /378/

Citation Formats

Foster, Billy E. High speed radiation scanning technique for simultaneously determining the pitch and eccentricity of an encased oil. United States: N. p., 1976. Web.
Foster, Billy E. High speed radiation scanning technique for simultaneously determining the pitch and eccentricity of an encased oil. United States.
Foster, Billy E. Thu . "High speed radiation scanning technique for simultaneously determining the pitch and eccentricity of an encased oil". United States. https://www.osti.gov/servlets/purl/862732.
@article{osti_862732,
title = {High speed radiation scanning technique for simultaneously determining the pitch and eccentricity of an encased oil},
author = {Foster, Billy E},
abstractNote = {A method of determining the pitch and eccentricity of the winding of a coil unit is provided. It specifically relates to nondestructively examining completely encased heating coils used to simulate the heat generated from fuel rods in reactor studies. The method comprises (1) the use of an x-ray transmission technique through the axial centerline of the coil unit after the winding of the coil unit has been completely encased, (2) the use of a radiation detection instrument to monitor the transmitted radiation, and (3) the use of recording instrumentation calibrated as a function of the distance between windings. A change in the pitch of the winding is detected by a general increase or decrease in the distance between recorded peaks of the transmitted radiation. Eccentricity is detected by a consistent variation in distance between peaks occuring in alternate pairs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {1}
}

Patent:

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