NUCLEAR MATERIALS CONTROL SYSTEM, PHASE II A DESIGN FOR THE EVALUATION OF A REACTOR FUELS MEASUREMENT FACILITY

摘要

The purpose of the Reactor Fuels Measurement Facility (RFMF) is to make nondestructive measurements of fuel elements to indicate by comparison with the standard under wet and dry conditions, a variation in fissile content in the absence of, or the presence of, nuclear poisons. In the prototype described in this report, provision has also been made for inserting annuli of selected materials between the fuel assembly and the reactor core to vary the moderator reflector characteristics of the reactor and thus change the sensitivity range of the device.