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MACCS (MELCOR Accident Consequence Code System) User Guide -- Version 4.0

Leute, Jennifer E.; Walton, Fotini; Mitchell, Roger; Eubanks, Lloyd

The MELCOR Accident Consequence Code System (MACCS) is used by Nuclear Regulatory Commission (NRC) and various national and international organizations for probabilistic consequence analysis of nuclear power accidents. This User Guide is intended to assist analysts in understanding the MACCS/WinMACCS model and to provide information regarding the code. This user guide version describes MACCS Version 4.0. Features that have been added to MACCS in subsequent versions are described in separate documentation. This User Guide provides a brief description of the model history, explains how to set up and execute a problem, and informs the user of the definition of various input parameters and any constraints placed on those parameters. This report is part of a series of reports documenting MACCS. Other reports include the MACCS Theory Manual, MACCS Verification Report, Technical Bases for Consequence Analyses Using MACCS, as well as documentation for preprocessor codes including SecPop, MelMACCS, and COMIDA2.

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TYPE SAND Report YEAR 2021
DOIOSTI

Advanced Reactor Safeguards Program Roadmap

Cipiti, Benjamin B.

The Advanced Reactor Safeguards (ARS) program was established in 2020 as part of appropriations for the Advanced Reactor Demonstration Program (ARDP) through the Office of Nuclear Energy in the Department of Energy. The goal of this program is to help address near term challenges that advanced nuclear reactor vendors face in meeting domestic Material Control and Accountancy (MC&A) and Physical Protection System (PPS) requirements for U.S. construction. Existing regulations for safeguards and security, as outlined in the Code of Federal Regulations, were written for large light water reactors, and some of the requirements are not suited to smaller, safer advanced reactor designs. The ARS program seeks to remove roadblocks in the deployment of new and advanced reactors by solving regulatory challenges, reducing safeguards and security costs, and utilizing the latest technologies and approaches for robust plant monitoring and protection. Safeguards and Security by Design (SSBD), or the consideration of safeguards and security requirements early in the design process, is an overarching principle that guides this program. This roadmap discusses the goals of the ARS program, current research, and program plan for the next five years.

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TYPE Other Report YEAR 2021
DOIOSTI

OC6 Phase 1: Investigating the under-prediction of low-frequency hydrodynamic loads and responses of a floating wind turbine

Robertson, Amy; Gueydon, Sebastien; Bachynski, Erin; Wang, Lu; Jonkman, Jason; Alarcon, Daniel; Amet, Ervin; Beardsell, Alec; Bonnet, Paul; Boudet, Bastien; Brun, Cedric; Feron, Marie; Chen, Zheng; Forbush, Dominic D.; Galinos, Christos; Galvan, Joseph; Gilbert, Philippe; Gomez, Juan; Haudin, Florence; Hu, Zhiqiang; Le Dreff, Jean-Baptiste; Leimeister, Mareike; Lemmer, Frank; Li, Haoran; Mckinnon, Gill; Mendikoa, Inigo; Moghtadaei, Abdolmajid; Netzband, Stefan; Oh, Sho; Pegalajar-Jurado, Antonio; Nguyen, Minh Q.; Ruehl, Kelley; Schunemann, Paul; Shi, Wei; Shin, Hyunkyoung; Si, Yulin; Surmout, Florian; Trubat, Pau; Qwist, Jacob; Wohlfahrt-Laymann, Svenja

Abstract not provided.

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TYPE Conference Poster YEAR 2021
OSTI
Results 13301–13350 of 100,993
Results 13301–13350 of 100,993
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