Automatic film-badge reading system for personnel dosimetry

A system has been developed to rapidly read and evaluate film badges worn by personnel occupationally exposed to ionising radiation. The developed films are inserted one at a time into the film badge reader and an identification number entered on a keyboard. An optoelectronic system measures the light transmission through the significant film areas and passes this information to a minicomputer for dose calculation and record keeping. The calculated dose is fed back to the reader for display. A paper-tape punch may be used with the film badge reader to allow subsequent offline computer processing. This system offers considerable time saving over more conventional manual techniques.