Analytical Laboratories Method No. 4015 - the Radiometric Determination of Beta Activity in Recycled Materials.

摘要

This method is used to compare the activity of reactor recycle uranium materials (both by-products and end-products included) to that of an aged natural uranium (ANU) standard. Both fission products and radioactive decay products are included in the measurement. Decay product activity will continue to increase for about 7 months following purification of uranium. A measurement can normally be performed in 2-4 hours. The method is applicable to a lower limit of 0.1% of the activity of ANU. No upper limit has been established. (ERA citation 13:043571)