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THE ORCBS > Radiation Safety > Radiation Safety Manual >
Radiation detection
instruments used for contamination surveys must be operable and capable
of detecting the radioisotopes used in the laboratory. To assure this,
radiation detection instruments will be calibrated annually by the
ORCBS. Calibrations are conducted using a set of sealed radiation
check sources containing known amounts of activity. The percentage
of the known activity that the instrument detects is known as the
efficiency of the instrument. The sources are for a range of radiation
energies; instruments calibrated then can be evaluated as to their
performance and accuracy through the calibration.
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Calibrations
