TWO-REGION REACTIVITY WORTH METHOD FOR ANALYSIS OF FUEL-POISON SUBASSEMBLIES

In the early production of reactor cores, a final nondestructive method to insure proper loading of fuel-poison subassemblies was desired. Subsequent analytical studies are presented which indicate that two-region reactivity measurements, as obtained from a suitable critical facility, should determine subassembly loading to within 2g U and 0.03g B. Increased confidence in fuel component assembly methods resulted in a decision to abandon use of this method and, as a result, it has never been put into practice at the Bettis Laboratory. (auth