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| Radiometric Destiny-/Thickness
Profile Gauging |
| (Column Scanning for Predictive
Maintenance) |
| Service Requirements: |
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Testing to be applied during
operation |
| |
Diagnostic of progress and
condition of a column |
| Testing Technique: |
| |
Radiometric gauging of the
attenuation of gamma rays during the transition through
column sections. |
| |
Source: Cesium-137, Max.
500 mCi(18.5 GBq). |
| Evaluation: |
| |
The detectors pulse counting
rates and the respective vertical position provide a specific
distance chart. |
| |
Pulse rates are dependant
of destiny, thickness and mess absorption coefficient
|
| |
Position of constructural
elements is directly derivable. |
| |
Variations in thickness (for
instance material loss) are traceable to differences of
pulse. |
| |
The specific destiny values
of the various product phases being present during operation
distinctive pulse rate/scan position profiles. |
| Advantages: |
| |
Process conditions (pressure,
temperature, composition) do not influence the test. |
| |
The drive units design and
the customized computer aided control and the evaluation
ensure reproduceable destiny/thickness profile surveys.
|
| |
The evaluation software provides
a direct composition of individual destiny/thickness charts
gained under different process conditions of the same
column. |
| |
The activity of source used
do not require any extraordinary precautions in radiometry
usually the interference with other radiometric gages
present in the plant can be avoided. |
| Radiometric Destiny-/Thickness
Profile Gauging |
| (Column Scanning for Predictive
Maintenance) |
| Field Set Up: |
| |
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