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Page Title:
Pre-operational Checks |
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|  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 radiation.
3.
Pre-operational Checks
DEMONSTRATE pre-
Perform pre-operational checks before work:
operational checks.
o
Confirm calibration is current.
o
Verify that battery is OK.
o
Perform an audio check (audio response is
immediate, while needle response takes time
to stabilize.
o
Ensure instrument responds to source.
o
Verify that background count rate is normal.
Explain that there is a
statistical variation in count
rates and demonstrate this
range daily.
46
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