Modeling and simulation functional needs for molten salt reactor licensing

Betzler, Benjamin R.; Heidet, Florent; Feng, Bo; Rabiti, Cristian; Sofu, Tanju; Brown, Nicholas R.

doi:10.1016/j.nucengdes.2019.110308

Cited by 24 publications

(5 citation statements)

References 18 publications

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“…Objectives for MELCOR development for non-LWRs include providing "a tool capable of performing severe accident progression modeling and source term characterization while allowing the capability for performing uncertainty analyses." Recently, Betzler et al completed a high-level assessment on the functional needs for modeling and simulation for MSR licensing, noting interdependencies between the functional needs and prioritizing them by importance [54]. They reported that the functional needs with the highest priority and impact on other functional needs were: fuel depletion, mass transport, heat transport, steady-state core neutronics, salt thermochemistry, source term accountability, and salt thermophysical properties.…”

Section: Mcfarlane Et Al Have Performed Considerable Work In Characte...mentioning

confidence: 99%

Functional Requirements for the Modeling and Simulation of Advanced (Non-LWR) Reactor Mechanistic Source Term

Shahbazi

Grabaskas

2020

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Section: Mcfarlane Et Al Have Performed Considerable Work In Characte...mentioning

confidence: 99%

Functional Requirements for the Modeling and Simulation of Advanced (Non-LWR) Reactor Mechanistic Source Term

Shahbazi

Grabaskas

2020

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“…However, Betzler et al (2019) identified and prioritized the most critical components of MSRs in the modeling and simulation components that are important to licensing. The research emphasized to dependencies related to complexity and multi-physics nature of MSRs that needs to develop validation steps for modeling the core and safety systems [32]. Based on existing challenges in the licensing process, it is necessary to update licensing procedures for SMRs.…”

Section: Licensing Process Challenges For Smrsmentioning

confidence: 99%

Small Modular Reactors Licensing Process Based on BEPU Approach: Status and Perspective

et al. 2023

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The competitiveness of small modular reactors (SMRs) has been planned based on design simplification, short construction time, passive safety systems, and enabling self-financing by ramp-up construction. Due to the global energy challenges, SMRs have received pervasive attention from a wide range of researchers, designers, developers, stakeholders, and customers. Besides the many advantages related to the design of SMRs, there are challenges ahead of these reactors. SMR licensing is one of the most critical challenges in the front deployment of these reactors. This challenge stems from innovations in SMR designs and systems, such as modularity or deployment for desalination, energy storage, hydrogen production, process heat, and district heating. Due to the lack of experimental data and technical knowledge, the licensing challenges for non-water coolant SMRs are more complicated. Nearly all previous generation reactor licenses were based on conservative analysis while the decision-making methods based on best-estimate and realistic approaches have received more attention in recent years. Thus, the method known as the best estimate plus uncertainty (BEPU) approach is selected for licensing in some cases. At this time, using the BEPU approach in licensing for conventional NPPs is a mature technology and ready for industrial application. Nevertheless, because most previous reactors were licensed based on conservative methods, developers and even regulatory bodies resist re-assessments based on the BEPU approach, while using the choice of conventional conservative methods is a type of roll-back for next-generation SMRs. Thus, this work reviews the BEPU approach and clarifies the possibility of using this approach in the licensing process of SMRs. The lack of experimental data and tight coupling of phenomena along with uncertainty quantification are the main challenges ahead of using BEPU in the licensing process of SMRs.

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“…Recently, Betzler et al completed a high-level assessment on the functional needs for modeling and simulation for MSR licensing, noting interdependencies between the functional needs and prioritizing them by importance [301]. This information is used to help inform the importance of the identified gaps noted below.…”

Section: Capability Assessmentmentioning

confidence: 99%

Survey and Assessment of Computational Capabilities for Advanced (Non-LWR) Reactor Mechanistic Source Term Analysis.

Clark¹,

Luxat²,

Higgins³

et al. 2020

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Modeling and simulation functional needs for molten salt reactor licensing

Cited by 24 publications

References 18 publications

Functional Requirements for the Modeling and Simulation of Advanced (Non-LWR) Reactor Mechanistic Source Term

Functional Requirements for the Modeling and Simulation of Advanced (Non-LWR) Reactor Mechanistic Source Term

Small Modular Reactors Licensing Process Based on BEPU Approach: Status and Perspective

Survey and Assessment of Computational Capabilities for Advanced (Non-LWR) Reactor Mechanistic Source Term Analysis.

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