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​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Risk-Informed Systems Analysis

​The Light Water Reactor Sustainability (LWRS)​ Program's Risk-Informed Systems Analysis pathway conducts research and development to optimize safety margins and minimize uncertainties to achieve high le​vels of safety and economic efficiency in n​​​​uclear power plants. The goal of these activities is to develop and deploy risk-informed technologies for use by the industry to enable more cost-effective plant operations.

​​Objectives, Research Areas, and Outcomes​​​​​​


Research and development to optimize safety margins and ​minimize uncertainties to achieve econom​​ic efficiencies while maintaining high levels of safety.

Develop technologies that provide precise information about the health of a component or system, track performanc​​e, identify potential degradation trends, and provide ​an estimate of its expected failure time.

Enable planning and performance components maintenance operations at convenient times before failure is expected to occur.

Develop new methods to analyze data, propagate component health information from the component to the system level, and optimize plant resources.

Develop more effective and efficient analytical methods and tools to support risk-informed decisions related to nuclear power plant equipment reliability and asset-management programs.

Develop data-analytics tools coupled with risk-informed methods to manage and optimize plant-asset life cycles, budgets, and schedules.

Support enhanced system performance and health management, while reducing significantly labor needs.

​Researc​h Areas

​​ ​​ ​

Plant Asset Management​

​Enhanced Resilient Plant

​Fuel Optimization

Enhanced Risk Analysis Tools and Methods

Risk-Informed Plant Health and Asset Management

Enhanced Resilient Plant Systems

Plant Fuel-Reload Optimization

Integrated Risk Assessment for Digital Instrumentation and Control

Terry Turbine Expanded Operating Band

Risk-Informed Multiphysics Best Estimate Plus Uncertainties

Enhanced Hazard Analysis

​Dynamic Probabilistic Risk Assessment​

Human Reliability Analysis


Enhanced Fire Probabilistic Risk Assessment

Dynamic Probabilistic Risk Assessment Research

Human Reliability Analysis—HUNTER

Power Uprate

Light Detection and Ranging (LiDAR) Technology

Optimization of Plant Outage

Evaluation of Maturity Levels of Risk Assessment & Modeling Tools

Optimization of Aging Managment

Risk-Informed Safety Margin Characterization Framework


Projects under the Risk-Informed Systems Analysis pathway contribute to a comprehensive enterprise risk-analysis framework supporting the decrease of the operational cost of nuclear power plants, short-term and long-term economic goals​.


​​For more information, contact

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


Risk-Informed Systems Analysis​