High speed radiation scanning technique for simultaneously determining the pitch and eccentricity of an encased oil
Patent
·
OSTI ID:862732
- Oak Ridge, TN
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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
- DOE Contract Number:
- W-7405-ENG-26
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Number(s):
- US 3999067
- OSTI ID:
- 862732
- Country of Publication:
- United States
- Language:
- English
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High speed radiation scanning technique for simultaneously determining the pitch and eccentricity of an encased coil
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Related Subjects
/378/
alternate
axial
axial centerline
calibrated
centerline
change
coil
coil unit
coils
completely
comprises
consistent
decrease
detected
detection
detection instrument
determining
distance
eccentricity
encased
examining
fuel
fuel rod
fuel rods
function
generated
heat
heat generated
heating
heating coil
increase
instrument
instrumentation
method
method comprise
method comprises
monitor
nondestructively
occuring
oil
pairs
peaks
pitch
provided
radiation
radiation detection
reactor
reactor studies
recorded
recording
relates
rods
scanning
simulate
simultaneously
simultaneously determining
specifically
speed
studies
technique
transmission
transmitted
unit
variation
winding
windings
x-ray
x-ray transmission
alternate
axial
axial centerline
calibrated
centerline
change
coil
coil unit
coils
completely
comprises
consistent
decrease
detected
detection
detection instrument
determining
distance
eccentricity
encased
examining
fuel
fuel rod
fuel rods
function
generated
heat
heat generated
heating
heating coil
increase
instrument
instrumentation
method
method comprise
method comprises
monitor
nondestructively
occuring
oil
pairs
peaks
pitch
provided
radiation
radiation detection
reactor
reactor studies
recorded
recording
relates
rods
scanning
simulate
simultaneously
simultaneously determining
specifically
speed
studies
technique
transmission
transmitted
unit
variation
winding
windings
x-ray
x-ray transmission