Bottom Mounted Instrumentation (BMI) - Corrosion Inspection
- Instrument Penetrations have caused significant reliability concerns at nuclear plants.
- Difficult access and need for detailed inspection data required multi-modal approach for proper integrity assessment.
- Combination of remote visual inspection (RVI), ultrasonic testing (UT) and eddy current non-destructive testing (NDT) techniques help assess BMI guide tubes to prioritize need for repair
![]() |
![]() |
| Bottom mounted instruments present a challenge for mechanical integrity assessment | Visual inspection and measurement of guide tube |







