![CDATA[ [if IE 9] ]]>
The goal of this research is to understand the true operating limits of Terry turbines and self-regulating mode of operation of reactor-core isolation cooling (RCIC) systems for boiling water reactors (BWRs) and turbine-driven auxiliary feedwater (TDAFW) systems for pressurized water reactors (PWRs).
The outcome of this research is a demonstration, with a high level of confidence, that Terry turbine systems remain operational well beyond the normally credited 4 to 12 hours. Knowledge of the true operating limits of these systems will provide a technical basis to allow utilities to take credit for extended emergency core cooling, thus providing margin on the distribution of scarce plant resources to where they are most-urgently needed and providing more time to transition to other core-cooling equipment, such as FLEX, in order to prevent core damage.
2023—credit Terry turbines for extended operation using the results from this completed project.
Terry turbine equipment is used to demonstrate self-regulating performance. Terry turbopumps are an important safety system credited for providing cooling water during accident conditions, similar to those that occurred during the Fukushima Daichi event in 2011.