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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 PSFs in the future.


Planned Major Accomplishments:​

  • 2022—update the HUNTER code to include the capability to support evaluations of operator actions during highly dynamic (i.e., time-dependent) accident scenarios; develop coupling mechanisms to support interaction between HUNTER and Event Modeling Risk Assessment using Linked Diagrams (EMRALD) to facilitate seamless integrated dynamic probabilistic risk assessment simulations; and demonstrate capabilities of HUNTER using additional accident scenarios during which operator actions are analyzed within dynamic accident progression.

  • 2023—finalize a quality-assured code for industry use; facilitate a HUNTER user's group with industry engagement.

  • 2024—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).

 

Related Reports

 

 

Human Unimodel for Nuclear Technology to Enhance Reliability (HUNTER) Demonstration: Part 1, Empirical Data Collection of Operational Scenarios534909/14/2022 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 6https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
Software Implementation and Demonstration of the Human Unimodel for Nuclear Technology to Enhance Reliability (HUNTER), INL/RPT-22-665642413073/31/2022 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 224https://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-21-645252347479/30/2021 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. 320https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
Integration of Human Reliability Analysis Models into the Simulation-Based Framework, INL/EXT-16-39015557717/1/2016 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 409https://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-15-367415592210/1/2015 9:19:16 PMINL/EXT-15-36741 Light Water Reactor Sustainability Program Proof-of-Concept Demonstrations for Computation-Based Human Reliability Analysis: Modeling Operator Performance During 189https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
A Research Roadmap for Computation-Based Human Reliability Analysis, INL-EXT-15-36051559147/31/2015 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 4https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
Simulation and Non-Simulation Based Human Reliability Analysis Approaches, INL-EXT-14-339035519412/18/2014 7:23:58 PMThis information was prepared as an account of work sponsored by an agency of the U.S. Government Neither the U.S. Government nor any agency thereof, nor any of their employees 129https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf






 








virtual operator.png
An image of a virtual op​erator​.