Radiation monitoring - Purpose, accuracy required and interpretation of results

Twenty-percent error is considered satisfactory in monitoring work, and a larger error is acceptable when the radiation level is of the order of 10% of the maximum permissible level. In this paper problems of neutron and surface contamination monitoring are reviewed and different views on pre-operational off-site surveys are compared. The order in which milk, beef and vegetables become unfit for human consumption is listed. It is pointed out that 90Sr analysis may not be required for airborne release. (author)