Technical Assistance in Review of Source Term: Related Issues of Advanced Reactors

摘要

The distribution of iodine in containment during an AP-600 design-basis accident was evaluated using models in the TRENDS code. The AP-600 3BE accident sequence calculations showed that a pH greater than 7 was maintained for at least 30 days. Because the pH was maintained at this level, most of the iodine was in the form of iodide.