Development of a LOCA safety analysis evaluation model for the Westinghouse Small Modular Reactor

Liao, Jun; Kucukboyaci, Vefa N.; Wright, Richard F.

doi:10.1016/j.anucene.2016.07.023

Cited by 14 publications

(5 citation statements)

References 1 publication

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“…However, with its advanced structural designs and enhanced safety features (Harman et al, 2011;Reyes, 2012;Kim et al, 2016;Ford et al, 2017;Udiyani et al, 2018), SMRs are likely to be safer and more reliable compared with traditional NPPs. A quantity of researches have been conducted to study its safety features in response to potential disasters, the aim of which is to ensure a high level of safety and security for SMR designs (Reyes, 2012;Butt et al, 2016;Liao et al, 2016). For example, the reduced pipelines in SMR systems can prevent several design-basis accidents such as loss-of-coolant-accident (Kim et al, 2016).…”

Section: Suggestions On Smr Site Selectionmentioning

confidence: 99%

“…Last but not least, the safety factor is also one of the most important indicators that must be considered when choosing suitable sites for SMRs. Due to the compact size, small capacity and passive safety design of commercial SMRs (Kim et al, 2016;Liao et al, 2016), the potential radiation hazard of SMRs is relatively lower than that of NPPs. The negative effects of potential hazardous facilities on SMRs are also low.…”

Section: Suggestions On Smr Site Selectionmentioning

confidence: 99%

“…Moreover, SMRs are currently in the development stage, and many studies evaluated the safety of SMRs through modelling or experimental methods. For example, the postulated large break lossof-coolant accident (LOCA) safety of the Westinghouse-SMR was examined by an evaluation model, and the results showed that small break LOCA was the most limiting design basis accident (Liao et al, 2016). The passive safety systems of multi-application small light water reactor (MASLWR) have been assessed through the RELAP5 Mod 4.0 system analysis code by Butt et al (2016).…”

Section: Suggestions On Smr Site Selectionmentioning

confidence: 99%

See 2 more Smart Citations

Perspective on Site Selection of Small Modular Reactors

Zhang¹,

Guo²,

Liu³

et al. 2020

J ENVIRON INFORM LET

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As an emerging means of energy supply, small modular reactors (SMRs) are considered as a promising option for relieving environmental pressure caused by increasing fossil fuel consumption. Since SMRs are at an early stage of development, in-depth analysis on the necessity and feasibility of their deployment is essential. The site selection of SMRs, which is a multifaceted process and should be guided by a clearly established set of criteria, is a crucial step. To propose comprehensive recommendations for SMR site selection, a review is provided in this study. The review involves development process, technical characteristics and potential applications of SMRs, research status of SMR site selection, and criteria for site selection of nuclear power plants (NPPs). Different considerations of siting criteria between SMRs and NPPs are analyzed. Based on the review and analyses, perspectives and targeted suggestions on SMR site selection are provided.

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Section: Suggestions On Smr Site Selectionmentioning

confidence: 99%

Section: Suggestions On Smr Site Selectionmentioning

confidence: 99%

Section: Suggestions On Smr Site Selectionmentioning

confidence: 99%

See 1 more Smart Citation

Perspective on Site Selection of Small Modular Reactors

Zhang¹,

Guo²,

Liu³

et al. 2020

J ENVIRON INFORM LET

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“…The large reactors (SFR, BWR and PWR) all had assumed load factors of around 80% since the operation of large fleet of nuclear power plants in the model would likely result in the need for flexible power operation [21]. The disparity in discharge burnup for the SM-PWR (40 GWd/tHM) vs the large PWR (50 GWd/tHM) was predominantly due to the low power density assumed for the SM-PWR (around 66% that of the large PWR) and 5 year dwell time [35][36][37][38].…”

Section: Fuel Cycle Strategies Consideredmentioning

confidence: 99%

The Fuel Cycle Implications of Nuclear Process Heat

Peakman

Gregg

2020

Energies

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International and UK fuel cycle scenario analyses performed to date have focused on nuclear plants producing electricity without considering in detail the other potential drivers for nuclear power, such as industrial process heat. Part of the reason behind the restricted applications of nuclear power is because the assumptions behind the future scenario are not fully captured, for example how big are demands from different sectors? Here we present a means to fully capture the potential opportunities for nuclear power using Sankey diagrams and then, using this information, consider for the first time in the UK the fuel cycle implications of decarbonising industrial heat demand in the year 2050 with nuclear power using the ORION fuel cycle code to study attributes related to spent fuel, uranium demand and decay heat from the spent fuel. We show that even in high industrial energy demand scenarios, the sensitivity of spent fuel masses and decay heat to the types of reactor deployed is relatively small compared to the greater fuel cycle demands from large-scale deployment of nuclear plants for electricity production. However, the sensitivity of spent fuel volumes depends heavily on the extent to which High Temperature Reactor and Light Water Reactor systems operating on a once-through cycle are deployed.

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“…There are a number of Small Modular PWRs (SM-PWRs) at various stages of development. Notable examples include: NuScale's SMR design, with a power output (factoring in the recently reported up-rate) of around 200 MWth/60 MWe and refuelling period of 2 years (NuScale, 2018); the ACP100, with a power output of 310 MWth/100 MWe and refuelling period of 2 years (Zhu et al, 2016); and Westinghouse's SM-PWR concept, with an output of around 800 MWth/225 MWe (Liao et al, 2016). In common with the majority of SM-PWR designs, these SM-PWRs all nominally employ soluble boron in the coolant during normal operation.…”

Section: Comparison With Other Pwr Systemsmentioning

confidence: 99%

The core design of a Small Modular Pressurised Water Reactor for commercial marine propulsion

Peakman

Owen

Abram

2019

Progress in Nuclear Energy

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If international agreements regarding the need to significantly reduce greenhouse gas emissions are to be met then there is a high probability that the shipping industry will have to dramatically reduce its greenhouse gas emissions. For emission reductions from ships greater than around 40% then alternatives to fossil fuels -such as nuclear energy -will very likely be required. A Small Modular Pressurised Water Reactor design has been developed specifically to meet the requirements of a large container ship with a power requirement of 110 MWe. Container ships have a number of requirements -including a small crew size and reduced outages associated with refuelling -that result in a greater focus on design simplifications, including the elimination of the chemical reactivity control system during power operation and a long core life.We have developed a novel, soluble-boron free, low power density core that does not require refuelling for 15 years. The neutronic and fuel performance behaviour of this system has been studied with conventional UO 2 fuel. The size of the pressure vessel has been limited to 3.5 metres in diameter. Furthermore, to ensure the survivability of the cladding material, the coolant outlet temperature has been reduced to 285 • C from 320 • C as in conventional GWe-class PWRs, with a resulting reduction in thermal efficiency to 25%. The UO 2 core design was able to satisfactorily meet the majority of requirements placed upon the system assuming that fuel rod burnups can be limited to 100 GWd/tHM. The core developed here represents the first workable design of a commercial marine reactor using conventional fuel, which makes realistic the idea of using nuclear reactors for shipping.

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Development of a LOCA safety analysis evaluation model for the Westinghouse Small Modular Reactor

Cited by 14 publications

References 1 publication

Perspective on Site Selection of Small Modular Reactors

Perspective on Site Selection of Small Modular Reactors

The Fuel Cycle Implications of Nuclear Process Heat

The core design of a Small Modular Pressurised Water Reactor for commercial marine propulsion

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