Operator declaration verification technique for spent fuel at reprocessing facilities

摘要: Abstract A verification technique for use at reprocessing facilities, which integrates existing technologies to strengthen safeguards through the of environmental monitoring, has been developed Los Alamos National Laboratory. This involves measurement isotopic ratios stable noble fission gases from on-stack emissions during spent fuel using high-precision mass spectrometry. These results are then compared a database calculated data analysis method determine specific parameters (e.g., burnup, type, reactor etc.). inferred can be used verify operator declarations. The integrated system (mass spectrometry, modeling, and analysis) validated measurements US production reactor. led an burnup that matched declared within 3.9%, suggesting current is sufficient most applications. Partial validation gas samples literature power reported elsewhere. shown here may have some difficulty distinguishing pressurized water (PWR) boiling (BWR) fuel; however, it consistently distinguish light (either PWR or BWR) fuels other types. Future validations will include advanced (such as breeder fuels) research become available.