A methodology for the identification of the postulated initiating events of the Molten Salt Fast Reactor

Gérardin, Delphine; Uggenti, Anna Chiara; Beils, Stéphane; Carpignano, Andrea; Dulla, Sandra; Merle, E.; Heuer, D.; Laureau, Axel; Allibert, M.

doi:10.1016/j.net.2019.01.009

Cited by 13 publications

(23 citation statements)

References 7 publications

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“…In addition to their use in reactor licensing, source term analyses can play a key role in reactor siting, as well as the development of emergency planning zones and reactor site boundaries [NRC 1993, NRC 2003, NRC 2005. For new generation advanced reactor concepts such as sodium cooled fast reactors (SFRs) and molten salt reactors (MSRs), source term analyses can also provide valuable feedback into the design process and facilitate risk-informed engineering decisions (e.g., Yoshioka et al, 2012, Grabaskas et al, 2016a, Gérardin et al, 2019.…”

Section: Introductionmentioning

confidence: 99%

“…Such an analyses has not yet been performed for MSR concepts. However, there have been preliminary source term studies that identify the key conceptual issues that will need to be addressed in a scenario-specific MSR source term analyses (e.g., Yoshioka et al, 2012;Gérardin et al, 2019). The following summarizes the key conceptual findings of these early advanced reactor source term studies and, based on these studies, provides recommendations for developing a rigorous source term analyses strategy for MSRs.…”

Section: Introductionmentioning

confidence: 99%

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Development of a mechanistic source term approach for liquid-fueled Molten Salt Reactors

Jerden

Grabaskas

Bucknor

2019

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In addition to the significant progress being made in accident analyses for some molten salt reactor (MSR) concepts, there remains a need for a thorough, step-by-step source term analyses that includes parametric sensitivity analyses and trial calculations. This report provides a basis for developing an MSR source term model by examining the successful methodology used in the sodium fast reactor (SFR) mechanistic source term work presented by Grabaskas et al., [2016a]. Useful risk analyses tools currently in use for developing MSR source term analyses are also summarized, such as those developed for the European Safety Assessment of the Molten Salt Fast Reactor (SAMOFAR) project. Based on the analyses summarized in this report, a pathway is recommended for a rigorous and technology-neutral MSR source term analysis in the U.S.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of a mechanistic source term approach for liquid-fueled Molten Salt Reactors

Jerden

Grabaskas

Bucknor

2019

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“…The initiating events challenge the reactor and its safety functions; they are grouped in families depending on their potential effects on the reactor [5]. For each family, specific initiating events to be further analysed have been selected.…”

Section: Required Lods After Msfr Initiating Eventsmentioning

confidence: 99%

“…The list of MSFR initiating events has been divided into three categories with incidents, accidents and limiting events [5]. Limiting events are very rare events postulated in complement to accidents, to ensure the avoidance of cliff edge effects in terms of radiological releases.…”

Section: Required Lods After Msfr Initiating Eventsmentioning

confidence: 99%

“…Using the Functional Failure Mode and Effects Analysis (FFMEA) and the Master Logic Diagram (MLD), a list of accidents initiators has been identified for the plant state corresponding to the nominal conditions during power production [4,5,6,7]. In parallel, a list of design key-points that are relevant for safety and that should be further documented has been provided [6].…”

Section: Introductionmentioning

confidence: 99%

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Application of the lines of defence method to the molten salt fast reactor in the framework of the SAMOFAR project

Beils¹,

Gérardin

Uggenti

et al. 2019

EPJ Nuclear Sci. Technol.

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The Molten Salt Fast Reactor (MSFR) with its liquid circulating fuel and its fast neutron spectrum calls for a new safety approach and adaptation of the analysis tools. In the frame of the Horizon2020 program SAMOFAR (Safety Assessment of the Molten Salt Fast Reactor), a safety approach suitable for Molten Salt Reactors has been developed and is now applied to the MSFR. For this purpose, the Lines of Defence (LoD) method is selected to drive the design consistently with the Defence in Depth principle. This paper presents the main characteristics of the method, along with some practical guidelines to apply it to the specific case of the MSFR; moreover, some initiating events are analyzed through the implementation of the LoD tool. The outcomes of this analysis drive the design evolution.

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Homogeneous Molten Salt Reactors (MSRs): The Molten Salt Fast Reactor (MSFR) concept

Allibert¹,

Delpech²,

Gérardin³

et al. 2023

Handbook of Generation IV Nuclear Reactors

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A methodology for the identification of the postulated initiating events of the Molten Salt Fast Reactor

Cited by 13 publications

References 7 publications

Development of a mechanistic source term approach for liquid-fueled Molten Salt Reactors

Development of a mechanistic source term approach for liquid-fueled Molten Salt Reactors

Application of the lines of defence method to the molten salt fast reactor in the framework of the SAMOFAR project

Homogeneous Molten Salt Reactors (MSRs): The Molten Salt Fast Reactor (MSFR) concept

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