The thickness at which the calandria vault floor in a generic CANDU 6 nuclear reactor may collapse while undergoing molten core–concrete interaction (MCCI) was studied using an approximate analytical model and a finite-element model. It was confirmed that the collapse criterion of 0.45 m floor thickness that is currently used in severe accident analyses is adequate. The estimated timing of collapse is subject to uncertainty of several hours.
Collapse Criterion for the CANDU 6 Calandria Vault Floor During a Severe Accident
Manuscript received July 7, 2016; final manuscript received November 22, 2016; published online March 1, 2017. Assoc. Editor: Arun Nayak.
David, R. (March 1, 2017). "Collapse Criterion for the CANDU 6 Calandria Vault Floor During a Severe Accident." ASME. ASME J of Nuclear Rad Sci. April 2017; 3(2): 020908. https://doi.org/10.1115/1.4035336
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