Spent Fuel Sabotage Test Program and Surrogate Aerosol Particle Analyses Update

摘要

This multinational, multi-phase spent fuel sabotage test program is quantifying the mass and chemistryrnof aerosol particles produced when a high energy density device (HEDD) interacts with andrnexplosively particulates test rodlets that contain pellets of either surrogate materials or actual spentrnfuel. This program, underway for several years, will provide needed source term data that are relevantrnto estimation of the consequence of plausible sabotage attack scenarios on spent fuel transportrnand storage casks. The measured aerosol data, from experiments within a contained test chamber,rnare the input for follow-on modeling studies to quantify respirable hazards, associated radiologicalrnrisk assessments, vulnerability assessments, and potential cask physical protection design modifications.rnThese assessments may help guide development of transportation safety and security regulationsrnand/or validate their current technical bases. We are quantifying the spent fuel ratio, SFR, thernratio of the aerosol particles produced from HEDD-affected actual spent fuel to the aerosol particlesrnproduced from surrogate materials, measured under closely matched test conditions. We summarizernmeasured aerosol particle size distributions, plus analyses and interpretations for the respirablernfractions produced from surrogate cerium oxide pellets, Zircaloy cladding tube, and fission productrndopant cesium, plus enhanced fission product sorption onto the respirable particles. This paper providesrnan update of the fully contained, aerosol-explosive testing progress over about the last year,rnincluding: the conclusion of, and results from, aerosol measurements from rodlets containing nonradioactiverncerium oxide sintered ceramic surrogate pellets and fission product dopants; status ofrntest initiation with rodlets of depleted uranium oxide and actual spent fuel (both high- and lowburnup)rnpellets; and, an update on explosive containment and aerosol collection test componentsrnand nuclear facility related issues. The test program is strongly supported and coordinated by bothrnthe U.S. and international program participants in Germany, France, and the U.K., as part of the internationalrnWorking Group for Sabotage Concerns of Transport and Storage Casks, WGSTSC.