Eleven runs were conducted at low radioactivity levels (initial iodine-131 and xenon-133 concentrations ranging from 1 to 260 uCi/1) in the Contamination-sampling fission product aerosols. In these runs, a single radionucline (iodine-1313 or xenon-133) was injected into a steam-air atmosphere in the 2.4-m3 operation of emergency core cooling, pressure reduction, or filter safety systems, was sampled during pressure and temperature transients representative of those expected for a reactor loss of-of-coolant accident.

The Three Mile Island and Chernobyl nuclear incidents emphasized the need for the world-wide nuclear community to cooperate further and exchange the results of research in this field in the most open and effective manner. Recognizing the roles of heat and mass transfer in all aspects of fission-product behavior in sever reactor accidents, the Executive Committee of the International Centre for Heat and Mass Transfer organized a Seminar on Fission Product Transport Processes in Reactor Accidents. This book contains the eleven of the lectures and all the papers presented at the seminar along with four invited papers that were not presented and a summary of the closing session.