Radiation- Wellman Study Guide questions & answers

Radiation- Wellman Study
Guide questions & answers

survey meter - answer Primarily used during and after an
exposure to check for excess radiation levels and to assure unit
turns off at end of shot


Dosimeter - answer A device used to detect and measure an
accumulated dosage of radiation


Range 0-200 mR


Calibrated annually


INSTANT READING OF EXPOSURE


film badge - answer Records total dose history for the period worn


Must be worn at all times on the trunk during radiographic work


Processed monthly


Alarm rate meter - answer Audible signal at dose rate of 500
mR/H

, Calibrated annually


ALARA - answer As Low As Reasonably Achievable


X-Ray Tube - answer Electronic tube located in the tube head that
generates x-rays


Anode - answer The positively charge terminal in the x-ray tube-
target end


Cathode - answer Negatively charged terminal


Electron source end-filament


Bremsstrahlung - answer Slowing of electrons that forms
characteristic x rays


Posting requirements - answer Unrestricted area: 2mR/hr
Restricted area: 2mR/hr- 5mR/hr
Radiation area: 5mR/hr
High radiation area: 100 mR/hr
Very high radiation area: 500 RAD/ hr


CAUTION X RAYS EMITTED WHEN ENERGIZED on x ray cabinets