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Monte Carlo treatment of fundamental-mode neutron leakage in the presence of voids. [LMFBR]

Journal Article · · Nucl. Sci. Eng.; (United States)
OSTI ID:7213810
A Monte Carlo method has been developed for the computation of the eigenvalue, as a function of buckling, in an infinite lattice. This method has been used to test the accuracy of earlier, approximate, void-worth computations, computations that enter into the analysis of hypothetical accidents in which voids collapse. Test results indicate that reactivity effects due to the collapse of bubbles in a molten pool can be computed, with reasonable accuracy, by the Behrens method, used earlier by Goldsmith. On the other hand, the Webb estimates of eigenvalue changes, caused by the expansion of fuel pins into the voids of a previously voided lattice, appear to be somewhat too high.
Research Organization:
Argonne National Lab., IL
OSTI ID:
7213810
Journal Information:
Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 63:1; ISSN NSENA
Country of Publication:
United States
Language:
English