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

Patent · Sat Jan 01 00:00:00 EST 1977

OSTI ID:862919

Day, Clifford K.; Stringer, James L.

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.

• Research Organization: Hanford Engineering Development Lab., Richland, WA (United States)
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• DOE Contract Number: AT(45-1-)2170
• Assignee: Westinghouse Electric Corporation (Pittsburgh, PA)
• Patent Number(s): 4,047,103
• Application Number: 05/547074
• OSTI ID: 862919
• Resource Relation: Patent File Date: 1975 Feb 04
• Country of Publication: United States
• Language: English

Related Subjects

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
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