An assessment of overbadging at a large clinic

We have analyzed the need to have personnel monitors worn by over 400 individuals in our clinic. We grouped individual's personnel monitoring results according to job classification and averaged each classification's readings for 18 mo. From these averages, we were able to clearly define an "essential to monitor" group and a "not essential to monitor" group (83 muSv per monitor per mo vs. 7 muSv per monitor per mo). We then performed a cost-benefit analysis on the results and compared the cost per sievert detected with the cost per theoretical cancer induced. The result was compared with the monetary value assigned per unit collective dose used in NCRP Report No. 107.