Skip Ribbon Commands
Skip to main content
Sign In

​​​​​​​​Integrated Risk Assessment for Digital Instrumentation and Control


Goal​​​

To support licensing of the transition from analog instrumentation and control (I&C) technologies to digital technologies in a nuclear power facility.

Integrated risk-assessment methodologies for digital I&C assure the long-term safety and reliability of vital systems, reduce uncertainty in licensing costs and time, and support integration of digital systems in the plant and more-efficient upgrades of technology for the entire life cycle of nuclear power plants.​

O​​​utcome

Researchers will develop a risk-informed analysis process that may be used as a part of the qualification basis to replace analog I&C with digital safety class systems at nuclear power plants. Completion of this project will occur when the methodology is demonstrated on a representative system that meets requirements for current safety rated technology.

Planned Major Accomplishments:

  • 2022—complete enhancements of the integrated digital risk assessment for digital I&C framework and demonstrate its capabilities via various safety analyses; produce a plug-and-play capability for the platform that enhances its robustness and flexibility by allowing integration with various advanced modeling tools and methods to better analyze accident scenarios.

  • 2023—complete development of the integrated digital risk assessment for digital I&C technology by incorporating the state-of-the-art techniques such as dynamic probabilistic risk analysis and human-reliability analysis, machine-learning and artificial-intelligence, validation, and uncertainty quantification.

  • 2024—apply the integrated digital risk assessment for digital I&C methodology to support formalizing new risk-informed regulatory processes, particularly in defense-in-depth and diversity applications.


Related Reports

 

 

Quantitative Risk Analysis of High Safety significant Safety-related Digital Instrumentation and Control Systems in Nuclear Power Plants using IRADIC Technology, INL/EXT-21-640392315648/31/2021 3:22:07 AMU.S. Department of Energy Office of Nuclear Energy This information was prepared as an account of work sponsored by an agency of the U.S. Government Han Bao 1 , Tate Shorthill 2 198https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
Redundancy-guided System-theoretic Hazard and Reliability Analysis of Safetyrelated Digital Instrumentation and Control Systems in Nuclear Power Plants, INL/EXT-20-595501995378/26/2020 9:04:58 PMHan Bao, Tate Shorthill, Hongbin Zhang U.S. Department of Energy Office of Nuclear Energy This information was prepared as an account of work sponsored by an agency of the U.S. 449https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
An Integrated Risk Assessment Process for Digital Instrumentation and Control Upgrades of Nuclear Power Plants, INL/EXT-19-55219557708/29/2019 6:33:21 PMINL/EXT-19-55219 Light Water Reactor Sustainability Program An Integrated Risk Assessment Process for Digital Instrumentation and Control Upgrades of Nuclear Power Plants Han 384https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf







Digital Instrument and Control System.jpg

Digital instrument and control systems located in the INL's Human System Simulation Laboratory.​