Texas Industrial Radiography Gamma Practice Test

What is the adjustment of a radiation survey instrument to display a known radiation level called?

1. Calibration

2. Attenuation

3. Collimation

4. Initialization

The correct answer is: Calibration

The term that refers to the adjustment of a radiation survey instrument to display a known radiation level is calibration. Calibration is a crucial process in the use of radiation survey instruments because it ensures the accuracy and reliability of the measurements taken by the instrument. This process involves comparing the instrument's output with a standard reference point and making the necessary adjustments so that the readings reflect the true radiation levels present. By calibrating the instrument, it is possible to account for any deviations or inaccuracies that may arise from factors such as instrument drift, environmental conditions, or the instrument's inherent characteristics. This process is vital for ensuring safety in environments where radiation exposure is a concern, allowing operators to make informed decisions based on accurate data. The other options pertain to different concepts in radiation measurement: attenuation refers to the reduction of radiation intensity as it passes through matter, collimation is the technique used to narrow a beam of radiation, and initialization typically refers to the process of preparing a device for operation but does not specifically relate to adjusting measurement accuracy.