DSC_0172.jpg (IMAGE) DOE/Idaho National Laboratory Caption INL operations and maintenance team members stand back as the 32-ton top head of the Advanced Test Reactor is removed from the vessel to allow access to begin the core overhaul that was completed on March 21, 2022. Credit Idaho National Laboratory Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.