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Title: Computation of Dancoff Factors for Fuel Elements Incorporating Randomly Packed TRISO Particles

A new method for estimating the Dancoff factors in pebble beds has been developed and implemented within two computer codes. The first of these codes, INTRAPEB, is used to compute Dancoff factors for individual pebbles taking into account the random packing of TRISO particles within the fuel zone of the pebble and explicitly accounting for the finite geometry of the fuel kernels. The second code, PEBDAN, is used to compute the pebble-to-pebble contribution to the overall Dancoff factor. The latter code also accounts for the finite size of the reactor vessel and for the proximity of reflectors, as well as for fluctuations in the pebble packing density that naturally arises in pebble beds.
Authors:
;
Publication Date:
OSTI Identifier:
911013
Report Number(s):
INEEL/EXT-05-02593
TRN: US0704343
DOE Contract Number:
DE-AC07-99ID-13727
Resource Type:
Technical Report
Research Org:
Idaho National Laboratory (INL)
Sponsoring Org:
DOE - NE
Country of Publication:
United States
Language:
English
Subject:
73 - NUCLEAR PHYSICS AND RADIATION PHYSICS; COMPUTER CODES; FLUCTUATIONS; FUEL ELEMENTS; FUEL PARTICLES; GEOMETRY; REACTOR VESSELS Dancoff Factors; Randomly Packed TRISO Particles; TRISO