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oai:www.ideals.illinois.edu:2142/67782 2023-07-11 col_2142_5131 col_2142_14837 com_2142_5130 com_2142_14836 com_2142_234

Mast, Peter Karl 2014-12-14T06:26:12Z 2014-12-14T06:26:12Z 10000-01-01 1980 1980 A fuel pin failure model is developed and incorporated into a fast-running computer program. The model is designed to predict irradiated fuel-pin cladding rupture during a hypothetical transient-overpower (TOP) accident in a liquid metal fast breeder reactor. The principal failure mechanisms of fuel-cladding differential thermal expansion and fission-gas pressurization are accounted for. The prediction of cladding failure is based on a mechanistic calculation of the time-dependent cladding temperature and stress. A finite-difference thermal solution is used to obtain the radial temperature distribution in the pin. The pin mechanics calculation uses a very efficient few-fuel-node/single-cladding-node algorithm that utilizes the Tresca yield criterion to determine the onset of cladding plastic deformation. Comparisons are made between model predictions and the results of a number of Transient Reactor Test Facility TOP experiments. The importance of accurately modeling the fuel radial and circumferential crack characterization is investigated and discussed. The effect of model limitations is discussed and recommendations for future work are made. Made available in DSpace on 2014-12-14T06:26:12Z (GMT). No. of bitstreams: 1 8018184.pdf: 7290537 bytes, checksum: f0e73949ab951bbee526832322d170e9 (MD5) Previous issue date: 1980 Embargo set by: Seth Robbins for item 67960 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 225 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1980. http://hdl.handle.net/2142/67782 (UMI)AAI8018184 eng Engineering, Nuclear Energy A Simple Computational Model for the Prediction of Fuel Pin Failure During A Transient-Overpower Accident text Nuclear Engineering Nuclear Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.