ML23123A009
| ML23123A009 | |
| Person / Time | |
|---|---|
| Issue date: | 05/03/2023 |
| From: | Gascot-Lozada R NRC/RES/DE |
| To: | Light Water Reactor Sustainability |
| Ramon L. Gascot Lozada 301-415-2004 | |
| Shared Package | |
| ML23123A002 | List: |
| References | |
| Download: ML23123A009 (3) | |
Text
February 2023
LWRS Status Highlights
Program Mission The Light Water Reactor Sustainability (LWRS) is a Department of Energy (DOE) program conducting research to develop technologies and other solutions to improve the economics and reliability, sustain the safety, and extend the operation of our nation's fleet of nuclear power plants (NPP). The NRC and the DOE has a Memorandum of Understanding (MOU) on Nuclear Innovation that allow the entities to share expertise and knowledge on advanced nuclear reactor technologies and nuclear energy innovation which extend to the area of light water reactor long-term operation and proposed modification for light water reactor sustainability Plant Modernization Pathway Main Goal: enable plant efficiency improvements through a strategy for long-term modernization Human & Technology Integration
Machine Learning and Economics Models to Enable Risk-Informed Condition Based Maintenance of a Nuclear Plant Asset. This report presents a risk-informed condition-based predictive maintenance on a circulating water system (CWS) and the development of methodologies that can be applied to other nuclear power plant systems.
Regulatory Consideration regarding the Use of Computer Vision Machine Learning in Safety-Related or Risk-Significant Applications in Nuclear Power Plants. This effort aims to evaluate how example artificial intelligence (AI) technologies align with the regulatory framework, and discusses Machine learning how they could be analyzed, modeled, tested, and taxonomy applications validated in a manner similar to typical digital instrumentation and control (DI&C) technologies. Disclaimer: This report is for NRC internal use only. Please do not distribute outside the agency.
Page 2 Materials Research Pathway Main Goal: understand and predict long-term behavior of materials in nuclear power plants Updates on Metals and Concrete:
- Environmental Assisted Fatigue: this effort will evaluate the microstructure of additive manufacturing (AM) alloys with a focus on porosity and its effect on the fatigue performance of AM alloys.
- Weld Repair Technology: on-going collaboration with EPRI to develop advanced welding technology, including laser and friction stir welding, to overcome the repair welding challenges due to helium-induced cracking.
(Expected to be done by FY 2025)
- Irradiation on Concrete : to understand the effects of irradiation on the bond properties of steel embedded in concrete. This project aims at conducting a scoping experimental study (in cooperation with CVR, Czech Republic) and providing methodological guidelines on the modeling of irradiated reinforced concrete structures. Concrete specimen Risk Informed System Analysis (RISA) Pathway Main Goal: develop safety analysis methods and tools to optimize the safety, reliability, and economics of nuclear power plants Research Areas:
Enhanced Resilient Systems:
FRI3D Fire Simulation Options and Verification Tasks-This report presents the software verification against the CFAST (Consolidated Model of Fire and Smoke Transport) fire simulation tool constraints and an evaluation of the Fire Dynamics Simulator (FDS) option tool.
Smoke-view visualization
Assessment of Modeling and Simulation Technical Gaps in Safety Analysis of High-Burnup Accident Tolerant Fuels-In this report, the technical gaps in the modeling and simulation of the high burnup (HBU) accident-tolerant fuels (ATF) were assessed in terms of the fuel cladding behavior during the postulated accident events.
Fuel cladding deformation mechanism during LOCA Page 3 Physical Security Pathway Main Goal: develop technologies and technical bases to optimize physical security
The Physical Security Pathway held two half-day Stakeholder Meetings on January 31, 2023, and February 1, 2023. Presentations provided at those meetings can be found here.
Research Areas Risk Informed Physical Security -
Economic Analysis of Physical Security at Nuclear Power Plants-This report describes the development of a framework that integrates results from Force on Force analysis with economic assessment to achieve two closely linked 3D model of a nuclear power plant in AVERT software objectives: (1) Estimation of effectiveness of components of the physical security posture, and (2) Evaluation of investments in physical security using an estimated cash flow analysis.
Flexible Plant Operation & Generation (FPOG) Pathway
Main Goal: enable diversification and increase revenue of light water reactors to produce non-electrical products Preliminary PRA for Steam Electrolysis
Top Hazards Identified
- Internal: Steam line break and loss of offsite power
- External: Electrolysis Plant H2 leak and H2 detonation
Hazard Analysis Report (Sandia):
Final Report on Hydrogen Plant Hazards and Risk Analysis Supporting Hydrogen Plant Siting near Nuclear Power Plant-This study investigates the risk of a high temperature steam electrolysis hydrogen production facility (HTEF) in close proximity to a NPP. This analysis evaluate a postulated HTEF located 1 km from a NPP, including the likelihood of an accident and the associated consequence to critical NPP targets
Past Issues
Prepared by: Ramón L. Gascot (RES/DE/RGPMB)