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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.
will develop an integrated risk assessment framework for delivering a technical
basis to support effective and secure digital I&C technologies for digital
upgrades/designs at nuclear power plants. The framework will provide: (1). A
best-estimate, risk-informed capability to address new technical digital issues
quantitatively, focusing on software common cause failures (CCFs) in
safety-critical digital I&C systems, (2). A common and modularized
platform for digital I&C designers, software developers, cybersecurity
analysts, and plant engineers to predict and prevent risk in the early design
stage of digital I&C systems, (3). Technical bases and risk-informed
insights to assist users to address and fulfill the risk-informed alternatives
for evaluation of CCFs in safety-critical digital I&C systems, (4). A
risk-informed tool that offers a capability of design architecture evaluation
of various digital I&C systems to support system design decisions in
diversity and redundancy applications.
2023—complete an industry peer review for the FY-22 project report; complete a technical report for the collaborative project with the nuclear industry on digital I&C reliability analysis; further develop and demonstrate the proposed framework in the evaluation of various digital I&C design architectures in terms of risk assessment and economic efficiencies.
Digital instrument and control systems located in the INL's Human System Simulation Laboratory.