CDPH Lead Inspector/Assessor California State Practice Exam

What should be done every 6 months to the XRF analyzer?

1. Calibrate the device

2. Recharge the battery

3. Conduct a surface wipe for radioactive levels

4. Replace the measuring sensor

The correct answer is: Conduct a surface wipe for radioactive levels

The correct action that should be taken every six months with the XRF (X-ray fluorescence) analyzer is to calibrate the device. Calibration is crucial for ensuring that the analyzer provides accurate and reliable results. Over time, the accuracy of an XRF analyzer can drift due to various factors such as environmental changes, usage, and the inherent stability of the instrumentation. Regular calibration allows you to verify the instrument's performance and make necessary adjustments to maintain precision. While other maintenance tasks are important for the overall functionality of the device, they do not specifically relate to the recommended semi-annual routine. For example, battery recharging is important, but it is usually based on usage rather than a fixed timeline. Similarly, conducting a surface wipe for radioactive levels and replacing the measuring sensor may not need to occur every six months and often depend on specific operational protocols or manufacturer guidance. Therefore, maintaining the calibration of the XRF analyzer every six months ensures that it continues to meet performance standards in lead inspection and assessment.