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Title: Eddy current position indicating apparatus for measuring displacements of core components of a liquid metal nuclear reactor

Abstract

Apparatus for measuring displacements of core components of a liquid metal fast breeder reactor by means of an eddy current probe. The active portion of the probe is located within a dry thimble which is supported on a stationary portion of the reactor core support structure. Split rings of metal, having a resistivity significantly different than sodium, are fixedly mounted on the core component to be monitored. The split rings are slidably positioned around, concentric with the probe and symmetrically situated along the axis of the probe so that motion of the ring along the axis of the probe produces a proportional change in the probes electrical output.

Inventors:
 [1];  [1]
  1. Richland, WA
Publication Date:
Research Org.:
Hanford Engineering Development Lab., Richland, WA (United States)
OSTI Identifier:
862919
Patent Number(s):
US 4047103
Assignee:
Westinghouse Electric Corporation (Pittsburgh, PA)
DOE Contract Number:  
AT(45-1-)2170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
eddy; current; position; indicating; apparatus; measuring; displacements; core; components; liquid; metal; nuclear; reactor; fast; breeder; means; probe; active; portion; located; dry; thimble; supported; stationary; support; structure; split; rings; resistivity; significantly; sodium; fixedly; mounted; component; monitored; slidably; positioned; concentric; symmetrically; situated; axis; motion; produces; proportional; change; probes; electrical; output; reactor apparatus; slidably positioned; core component; fixedly mounted; eddy current; breeder reactor; fast breeder; nuclear reactor; liquid metal; reactor core; support structure; metal fast; electrical output; current probe; core support; active portion; metal nuclear; stationary portion; position indicating; measuring displacements; core components; /376/324/976/

Citation Formats

Day, Clifford K, and Stringer, James L. Eddy current position indicating apparatus for measuring displacements of core components of a liquid metal nuclear reactor. United States: N. p., 1977. Web.
Day, Clifford K, & Stringer, James L. Eddy current position indicating apparatus for measuring displacements of core components of a liquid metal nuclear reactor. United States.
Day, Clifford K, and Stringer, James L. Sat . "Eddy current position indicating apparatus for measuring displacements of core components of a liquid metal nuclear reactor". United States. https://www.osti.gov/servlets/purl/862919.
@article{osti_862919,
title = {Eddy current position indicating apparatus for measuring displacements of core components of a liquid metal nuclear reactor},
author = {Day, Clifford K and Stringer, James L},
abstractNote = {Apparatus for measuring displacements of core components of a liquid metal fast breeder reactor by means of an eddy current probe. The active portion of the probe is located within a dry thimble which is supported on a stationary portion of the reactor core support structure. Split rings of metal, having a resistivity significantly different than sodium, are fixedly mounted on the core component to be monitored. The split rings are slidably positioned around, concentric with the probe and symmetrically situated along the axis of the probe so that motion of the ring along the axis of the probe produces a proportional change in the probes electrical output.},
doi = {},
url = {https://www.osti.gov/biblio/862919}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

Patent:

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