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Industrial Internet-of-Things & Data Analytics for Nuclear Power & Safeguards

Farley, David R.; Negus, Mitch G.; Slaybaugh, Rachel N.

Data analytics applied to nuclear power operations and nuclear safeguards is in a nascent state, yet some significant initial efforts are being undertaken by industry and academia. This report highlights our findings as to the current state-of-the-art of such efforts, in particular considering the Industrial Internet-of-Things aspect of this work, as well as an investigation into the utility of machine learning tools being developed for other industries. Blockchain applications were also studied. A consideration was undertaken into how to apply data analytics and machine learning to nuclear power and safeguards within the realm of Probabilistic Risk Assessments (PRAs), predictive maintenance & edge analytics, and proprietary data sharing.

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TYPE SAND Report YEAR 2018
DOIOSTI

MELCOR Modeling of Non-LWR Systems Draft Report for the Nuclear Regulatory Commission

Beeny, Bradley A.; Humphries, Larry L.

This report provides an overview of technical issues and design features relevant to advanced reactors and reviews MELCOR's current readiness for modeling accidents in such reactor types. This report describes advanced reactor physics models currently available or under development, and gauges the level of effort required to develop new models and capabilities applicable to assessing advanced reactor safety issues. Finally, this report reviews the available database that can be used in verification and validation of new models. Four general advanced reactor types are considered in this report: 1) High Temperature Gas-Cooled Reactor (HTGR); 2) Sodium Fast Reactor (SFR); 3) Molten Salt Reactor (MSR); 4) Fluoride Salt-Cooled High Temperature Reactor (FHR)

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TYPE SAND Report YEAR 2018
DOIOSTI

Terry Turbopump Expanded Operating Band Full-Scale Integral Long-Term Low-Pressure Experiments — Preliminary Test Plan

Osborn, Douglas; Solom, Matthew

This document details the milestone approach to define the true operating limitations (margins) of the Terry turbopump systems used in the nuclear industry for Milestone 5 (full-scale integral long-term low-pressure operations) efforts. The overall multinational-sponsored program creates the technical basis to: (1) reduce and defer additional utility costs, (2) simplify plant operations, and (3) provide a better understanding of the true margin which could reduce overall risk of operations.

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TYPE SAND Report YEAR 2018
DOIOSTI

Thickness scaling of pyroelectric response in thin ferroelectric Hf 1-xZr xO2 films

Applied Physics Letters

Smith, Sean; Henry, Michael D.; Brumbach, Michael T.; Rodriguez, Mark A.; Ihlefeld, Jon F.

In this study, the scaling of polarization and pyroelectric response across a thickness series (5–20 nm) of Hf0.58Zr0.42O2 films with TaN electrodes was characterized. Reduction in thickness from 20 nm to 5 nm resulted in a decreased remanent polarization from 17 to 2.8 μC cm-2. Accompanying the decreased remanent polarization was an increased absolute pyroelectric coefficient, from 30 to 58 μC m-2 K-1. The pyroelectric response of the 5 nm film was unstable and decreased logarithmically with time, while that of 10 nm and thicker films was stable over a time scale of >300 h at room temperature. Finally, the sign of the pyroelectric response was irreversible with differing polarity of poling bias for the 5 nm thick film, indicating that the enhanced pyroelectric response was of electret origins, whereas the pyroelectric response in thicker films was consistent with a crystallographic origin.

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TYPE Journal Article YEAR 2018
DOIOSTI

Uncovering signatures of preheat performance in MagLIF experiments using stimulated Raman and Brillouin backscatter spectra

Fein, Jeffrey R.; Bliss, David E.; Geissel, Matthias; Harvey-Thompson, Adam J.; Awe, Thomas J.; Ampleford, David J.; Glinsky, Michael E.; Foulk, James W.; Harding, Eric H.; Macrunnels, Keven A.; Patel, Sonal G.; Ruiz, Daniel E.; Scoglietti, Daniel J.; Smith, Ian C.; Weis, Matthew R.; Peterson, Kara J.

Abstract not provided.

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TYPE Conference Poster YEAR 2018
OSTI
Results 26701–26800 of 99,299
Results 26701–26800 of 99,299