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A versatile radium storage safe

The radium safe described provides secure, conveniently supervised and monitored storage for more than 200 radium needles and tubes (500 mg) and is adaptable for storing other brachytherapy radionuclides. Distinctive features of the safe are: (1) the light-weight, rotating drum which holds the sources, (2) the ease, safety and rapidity with which sources can be inventoried, removed or returned to the safe, and (3) a port through which radon leak tests can be made with minimal exposure to radiation. The geometry of the safe is cylindrical.