A licensee shall maintain a record of the calibrations of brachytherapy sources required by § 35.432 for 3 years after the last use of the source.
The record must include—
The date of the calibration;
The manufacturer's name, model number, and serial number for the source and the instruments used to calibrate the source;
The source output or activity;
The source positioning accuracy within the applicators; and
The name of the individual, the source manufacturer, or the calibration laboratory that performed the calibration.