Structural Response of 1/20 Scale Models of Above Core Structures to Increasingly Energetic Hypothetical Core Disruptive Accidents. Technical Report 7

摘要

Six experiments were performed to evaluate the structural response of an above core structure (ACS) to increasingly energetic hypothetical core disruptive accidents (HCDA). The tests were performed in a thickwall 1/20-scale model of a liquid metal fast breeder reactor (LMFBR) demonstration plant to provide information on ACS displacement as a function of HCDA energy so that computer codes such as SIMMER might include ACS displacement when calculating core release energetics. The 1/20-scale ACS models include a 5-kg aluminum block with dimensions that simulate the overall geometry of the ACS and the four columns that support the ACS over the core of the reactor. Each column includes an 8-in-long, 0.7-in-diameter 0.050-in-wall Ni 200 tubular section that experiences all of the deformation upon HCDA loading. The columns are supported by a rigid structure that simulates the geometrical constraints provided by the cover of the reactor. (ERA citation 05:022458)