Non-Destructive Testing (NDT) Practice Test

If an inspection instrument's calibration sticker indicates it is out of calibration by one day, what should be done before proceeding with inspections?

1. Continue using the instrument without changes

2. Calibrate the instrument on-site

3. Get a new instrument and check the calibration sticker

4. Document the calibration status and proceed

The correct answer is: Get a new instrument and check the calibration sticker

In the context of non-destructive testing (NDT), it is crucial to ensure that all equipment is functioning correctly and is properly calibrated before use. When an inspection instrument's calibration sticker indicates that it is out of calibration, even if it's by just one day, the validity of the measurements taken with that instrument can be questioned. Choosing to get a new instrument and check the calibration sticker has merit, as using a different, properly calibrated instrument would ensure the accuracy and reliability of the inspection results. This is especially important in contexts where safety and precision are paramount, as the consequences of using an out-of-calibration instrument can lead to misinterpretation of inspection results, potentially resulting in serious safety risks. On the other hand, the other choices either imply proceeding without confirming the instrument's accuracy, which could jeopardize the integrity of the testing process, or involve actions that do not adequately address the immediate issue of the calibration status. Therefore, ensuring that you use a properly calibrated instrument is essential for reliable inspections.