System improvements and new experiments in the Advanced Test Reactor, Idaho National Engineering and Environmental Laboratory

The Test Reactor Area (TRA) located at the US Department of Energyʹs Idaho National Engineering and Environmental Laboratory (INEEL) was a cornerstone in the development of nuclear technologies during the last half of the 20th century. The INEELʹS Advanced Test Reactor (ATR), the third generation of test reactors at the TRA. has base programs planned for the first half of the 21st century. As the role of nuclear technologies unfolds in the coming decades, past and future testing at the ATR will continue to contribute to technical, operational, and public issues facing the industry. System improvements have been completed or planned that will support operation of the ATR for many more decades. Optimal use of the past and future experience base will provide opportunities for continual improvement in reactor operations and performance. New programs at the ATR support plant aging studies for several international sponsors, disposition of excess weapons grade plutonium in MOX fuel, development of proliferation resistant fuels, and increased isotope production.