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​​​​​​​​​​​​​​Human Reliability Analysis — HUNTER


Goal

To develop a human-reliability assessment (HRA) application, called the Human Unimodel for Nuclear Technology to Enhance Reliability (HUNTER).

HUNTER functions as a framework for dynamic HRA modeling — including a simplified model of human cognition and a virtual operator — that produces relevant outputs, such as human-error probability, time spent on task, or task decisions based on plant evolutions.

​Outco​me

Researchers will develop a framework that formalizes the HRA method as software code that could be applied to industry risk analysis. The initial demonstration centers on a steam-generator tube-rupture scenario, using complexity as the first virtual operator performance-shaping factor. The implementation of HUNTER can be readily scaled to other nuclear power plant scenarios of interest and will include additional performance-shaping factors in the future.

Planned Major Accomplishments

  • ​Finalize a quality-assured code for industry use; facilitate a HUNTER users group with industry engagement.

  • Use HUNTER to model safety margins and staffing efficiency through planned control-room upgrade scenarios related to digital instrumentation and control; develop an approach for the use of artificial-intelligence and machine-learning technologies for simplifying HUNTER analyses; develop and demonstrate interfaces between HUNTER and other simulator tools (e.g., full-scope and microworld simulators).

Reports​

 

 

EMRALD-HUNTER: An Embedded Dynamic Human Reliability Analysis Module for Probabilistic Risk Assessment, INL/RPT-23-72783279088EMRALD is a software package for dynamic probabilistic risk assessment, while HUNTER is a tool for modeling human reliability analysis. The integration of these tools, known as EMRALD-HUNTER, enables streamlined risk modeling for both plant systems and human operator reliability, incorporating human reliability analysis into dynamic probabilistic risk assessment models.EMRALD is a software package for dynamic probabilistic risk assessment, while HUNTER is a tool for modeling human reliability analysis. The integration of these tools, known as EMRALD-HUNTER, enables streamlined risk modeling for both plant systems and human operator reliability, incorporating human reliability analysis into dynamic probabilistic risk assessment models.5/31/2023 12:23:27 PMINL/RPT-23-72783 Light Water Reactor Sustainability Program EMRALD-HUNTER: An Embedded Dynamic Human Reliability Analysis Module for Probabilistic Risk Assessment May 2023 U.S. 263https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
Human Unimodel for Nuclear Technology to Enhance Reliability (HUNTER) Demonstration: Part 2, Model Runs of Operational Scenarios, INL/RPT-22-70076269638The purpose of this report is to demonstrate two additional operational scenarios modeled in HUNTER: startup and loss of feedwater. The report also documents additional features in HUNTER accomplished through coupling it with the Rancor Microworld Simulator.The purpose of this report is to demonstrate two additional operational scenarios modeled in HUNTER: startup and loss of feedwater. The report also documents additional features in HUNTER accomplished through coupling it with the Rancor Microworld Simulator.11/16/2022 4:28:46 AMNeither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the 98https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
HUNTER Demonstration: Part 1, Empirical Data Collection of Operational Scenarios, INL/RPT-22-6916753490Human Unimodel for Nuclear Technology to Enhance Reliability (HUNTER) Demonstration: Part 1, Empirical Data Collection of Operational Scenarios.Human Unimodel for Nuclear Technology to Enhance Reliability (HUNTER) Demonstration: Part 1, Empirical Data Collection of Operational Scenarios.9/14/2022 11:54:27 AMINL/RPT-22-69167 Light Water Reactor Sustainability Program Human Unimodel for Nuclear Technology to Enhance Reliability (HUNTER) Demonstration: Part 1, Empirical Data Collection 224https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
Software Implementation and Demonstration of the HUNTER, INL/RPT-22-66564241307Software Implementation and Demonstration of the Human Unimodel for Nuclear Technology to Enhance Reliability (HUNTER)Software Implementation and Demonstration of the Human Unimodel for Nuclear Technology to Enhance Reliability (HUNTER)3/31/2022 10:26:03 PMINL/RPT-22-66564 Light Water Reactor Sustainability Program Software Implementation and Demonstration of the Human Unimodel for Nuclear Technology to Enhance Reliability (HUNTER 543https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
An Adaptable Software Toolkit for Dynamic Human Reliability Analysis: Progress Toward HUNTER 2, INL/EXT-21-64525234747The report concludes with a discussion of future activities. One area of considerable focus is ensuring additional scenarios are modeled to support emerging industry needs for human reliability analysisThe report concludes with a discussion of future activities. One area of considerable focus is ensuring additional scenarios are modeled to support emerging industry needs for human reliability analysis9/30/2021 9:21:38 PMINL/EXT-21-64525 Light Water Reactor Sustainability Program An Adaptable Software Toolkit for Dynamic Human Reliability Analysis: Progress Toward HUNTER 2 September 2021 U.S. 612https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
Integration of Human Reliability Analysis Models into the Simulation-Based Framework, INL/EXT-16-3901555771Integration of Human Reliability Analysis Models into the Simulation-Based Framework, INL/EXT-16-39015Integration of Human Reliability Analysis Models into the Simulation-Based Framework, INL/EXT-16-390157/1/2016 5:19:06 PMINL/EXT-16-39015 Light Water Reactor Sustainability Program Integration of Human Reliability Analysis Models into the Simulation-Based Framework for the Risk-Informed Safety 566https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
Proof-of-Concept Demonstrations for Computation-Based Human Reliability Analysis: Modeling Operator Performance During Flooding Scenarios, INL/EXT-15-3674155922Proof-of-Concept Demonstrations for Computation-Based Human Reliability Analysis: Modeling Operator Performance During Flooding Scenarios, INL-EXT-15-36741Proof-of-Concept Demonstrations for Computation-Based Human Reliability Analysis: Modeling Operator Performance During Flooding Scenarios, INL-EXT-15-3674110/1/2015 9:19:16 PMNeither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the 336https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
A Research Roadmap for Computation-Based Human Reliability Analysis, INL/EXT-15-3605155914A Research Roadmap for Computation-Based Human Reliability Analysis, INL-EXT-15-36051A Research Roadmap for Computation-Based Human Reliability Analysis, INL-EXT-15-360517/31/2015 6:08:03 PMINL/EXT-15-36051 Revision 0 Light Water Reactor Sustainability Program A Research Roadmap for Computation-Based Human Reliability Analysis July 2015 DOE Office of Nuclear 145https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf

​For more information, contact

Svetlana (Lana) Lawrence
Risk-Informed Systems Analysis, Pathway Lead
Idaho National Laboratory
virtual operator.png

​An image of a virtual operator in action.