Model to Simulate the Fission-Product Transport Process in the Experimental Breeder Reactor II

摘要

When fission products are released from a cladding breach in EBR-II, they mix turbulently with the sodium in the core, in the upper plenum and in the intermediate heat exchanger. Eventually the fission products are discharged 12 to 13 s later into the primary tank. Fission gases migrate upward through a 9-ft layer of sodium and enter the cover gas. Loss of fission gas is due to decay, leakage of cover gas, cold trapping of iodine and bromine parents. Depending on the reactor operation requirement, it may purge with fresh argon. The assumptions made and differential equations used to develop a model for such transport are presented. (ERA citation 05:017726)