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Code Distribution
Page • Getting Access Domestic Private (e.g. Commercial) Organizations, U.S. Government/Contractors, U.S. Academic Institutions: To request approval by the United States Nuclear Regulatory Commission (NRC): Fill out and sign this non-disclosure agreement and email it to safetycodes@nrc.gov. If approved by the NRC, your request will be sent to Sandia for approval and processing (this...
Contact Us
Page • For more information, contact: Dave LuxatManager, Severe Accident Modeling and Analysisdlluxat@sandia.gov(505) 844-1981 Larry HumphriesResearch & Development, Severe Accident Modeling and Analysisllhumph@sandia.gov(505) 845-3063 KC WagnerResearch & Development, Severe Accident Modeling and Analysiskcwagne@sandia.gov(505) 845-7047 Sonya MahlerMELCOR Licensing AdministratorMLR@sandia.gov
MELCOR Manuals
Post, October 13, 2022 • MELCOR Computer Code Manuals, Vol. 1: Primer and Users’ Guide, Version 2.2.9541,” SAND 2017-0455 O, Sandia National Laboratories, January 2017 (ADAMS Accession No. ML17040A429 View ADAMS Properties ML21042B319Open ADAMS Document (MELCOR Computer Code Manuals: Volume 1; Primer and Users Guide – Version 2.2.18019 Jan-2021.) / View ADAMS Properties ML21042B324Open ADAMS Document (MELCOR...
Non-Reactor Applications
Page • MELCOR is developed at Sandia National Laboratories for the U.S. Nuclear Regulatory Commission (NRC). MELCOR is widely used globally for nuclear reactor accident analyses. Currently, there are over 1000 MELCOR licenses worldwide. MELCOR is a fully-integrated, multi-physics engineering-level computer code that utilizes the generalized building-block concept to develop an analytical...
Other Publications
Post, October 13, 2022 • NSRD-6: Computational Capability to Substantiate DOE-HDBK-3010 Data NSRD-06_FY2015_final_report_SAND2015-10496 NSRD-11: Computational Capability to Substantiate DOE-HDBK-3010 Data NSRD-11_FY2016_final_report_SAND2016-12167
Publications
Page • MELCOR Documentation MELCOR Computer Code Manuals Vol. 1: Primer and Users’ Guide, Version 2.2.18019; ADAMS Accession No. ML21042B319 MELCOR Computer Code Manuals Vol. 2: Reference Manual, Version 2.2.18019; ADAMS Accession No.ML21042B324 MELCOR Computer Code Manuals Vol. 3: MELCOR Assessment Problems Version 1.8.5; ADAMS Accession No. ML012670311 The MELCOR Plot File...
Reactor Applications
Page • Regulatory Use of MELCOR Unified approach to non-LWR safety assessment Light Water Reactor Applications MELCOR has been in continuous development for over 40 years to support the resolution of critical safety issues identified by the Three Mile Island, Unit 2 (TMI-2) severe accident. Non-Light Water Reactor Applications ADVANCED NUCLEAR REACTORS Researchers have used...
Sandia Nuclear Safety Technology
Page • Nuclear Safety Technology of National and International Significance Securing the Future of Safe Nuclear Energy in the U.S. and Abroad Modern Accident Analysis Utilizing Advanced Machine Learning Sandia has a long history supporting the U.S. assess the safety of nuclear energy systems. We have led multiple initiatives, dating back to...
Upcoming Events
Page • 2025 MELCOR Workshop June 9-13, 2025 | Bethesda, Maryland For workshop details and to register, please go to the Registration Page. To make a reservation at the hotel, please click here.
Verification and Validation
Page • Validation and verification of the MELCOR code is an ongoing process. Validation is the process of demonstrating that software is capable of providing acceptable results in fulfilling the requirements set forth in the Software Requirements Document (SRD) The MELCOR Assessment Plan. Developed for the US Nuclear Regulatory Commission (NRC), the requirements review previous efforts and discuss...