Pre-operational Checks - doe-hdbk-1106-97

DOE-HDBK-1106-97

Lesson Plan

Instructor's Notes

Most hand-held survey instruments are calibrated to a

Cesium-137 source. Correction factors for the specific

radionuclide being monitored should be known when

surveying. Often the survey instrument will over or

under respond when monitoring for beta or alpha

3. Pre-operational Checks

DEMONSTRATE

preoperational checks.

Perform pre-operational checks before work:

Confirm calibration is current.

Verify that battery is OK.

Perform an audio check (audio response is

immediate, while needle response takes time to

stabilize.

Ensure instrument responds to source.

Explain that there is a

statistical variation in count

Verify that background count rate is normal.

rates and demonstrate this

range daily.