A licensee must maintain a record of radiation surveys of treatment units made according to part 4731.4476 for the duration of use of the unit. The record must include:
the manufacturer's name, model number, and serial number for the treatment unit, source, and instrument used to measure radiation levels;
each dose rate measured around the source while the unit is in the off position and the average of all measurements; and
29 SR 755
March 12, 2009
Official Publication of the State of Minnesota
Revisor of Statutes