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​​​​​​​​​​Terry Turbine Expanded Operating Band


Goa​​l

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).

Outcome

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.

Planned Major Accomplishments​

2023—credit Terry turbines for extended operation using the results from this completed project.

​Related Reports​​

 

 

Terry Turbopump Expanded Operating Band Modeling and Simulation Efforts in Fiscal Year 2021 Extended Period of Performance – Final Report, SAND2021-781231462Terry Turbopump Expanded Operating Band Modeling and Simulation Efforts in Fiscal Year 2021 Extended Period of Performance – Final Report, SAND2021-781Terry Turbopump Expanded Operating Band Modeling and Simulation Efforts in Fiscal Year 2021 Extended Period of Performance – Final Report, SAND2021-7817/15/2021 4:03:35 PMLindsay Gilkey 2 , Matthew Solom 3 , Bradley Beeny 1 , David Luxat 1 Prepared by Sandia National Laborato ries Albuquerque, New Mexico 87185 and Livermo re, California 94550 103https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
Terry Turbopump Expanded Operating Band Modeling and Simulation Efforts in Fiscal Year 2020 – Progress Report, SAND2020-9368200478Terry Turbopump Expanded Operating Band Modeling and Simulation Efforts in Fiscal Year 2020 – Progress Report, SAND2020-9368Terry Turbopump Expanded Operating Band Modeling and Simulation Efforts in Fiscal Year 2020 – Progress Report, SAND2020-93689/9/2020 11:43:27 PMSANDIA REPORT SAND2020-9368 Printed September 2020 Terry Turbopump Expanded Operating Band Modeling and Simulation Efforts in Fiscal Year 2020 – Progress Report Lindsay Gilkey 2 283https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
Terry Turbopump Expanded Operating Band Modeling and Full-Scale Test Development Efforts in Fiscal Year 2019 – Progress Report, SAND2019-1342355209Terry Turbopump Expanded Operating Band Modeling and Full-Scale Test Development Efforts in Fiscal Year 2019 – Progress Report, SAND2019-13423Terry Turbopump Expanded Operating Band Modeling and Full-Scale Test Development Efforts in Fiscal Year 2019 – Progress Report, SAND2019-1342310/31/2019 7:10:57 PMLindsay Gilkey, Matthew Solom, Nathan Andrews Prepared by Sandia National Laboratories Albuquerque, New Mexico 87185 and Livermore, California 94550 The authors would also like to 386https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
Terry Turbopump Expanded Operating Band Full-Scale Integral Long-Term Low-Pressure Experiments – Preliminary Test Plan, INL/EXT-18-5144255208Terry Turbopump Expanded Operating Band Full-Scale Integral Long-Term Low-Pressure Experiments – Preliminary Test Plan, SAND2018-12965Terry Turbopump Expanded Operating Band Full-Scale Integral Long-Term Low-Pressure Experiments – Preliminary Test Plan, SAND2018-129651/9/2019 2:52:42 PMSANDIA REPORT SAND2018-12965 Unlimited Release January 2019 Terry Turbopump Expanded Operating Band Full-Scale Integral Long-Term Low-Pressure Experiments – Preliminary Test Plan 159https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf

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terry turbine.jpg  
 

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.