Challenges to deployment of twenty-first century nuclear reactor systems

Ion, Sue

doi:10.1098/rspa.2016.0815

Cited by 7 publications

(4 citation statements)

References 26 publications

(28 reference statements)

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“…This reactor design is also known as U‐battery and was firstly developed in 2008. It is recognized for having significant commercialization potential in correlation to other micro‐HTR reactors 33 . The core consists of a seed‐and‐blanket configuration as the fuel block loading pattern, retaining a continuous operating life cycle and power of 5 to 10 years and 10 to 20 MWth, respectively 34,35 .…”

Section: Methodsmentioning

confidence: 99%

A neutronic investigation of tristructural isotropic‐duplex fuel in a high‐temperature reactor prismatic seed‐and‐blanket fuel block configuration with reduced power peaking

2021

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Summary This paper presents the neutronic analysis of a tristructural isotropic (TRISO)‐duplex fuel loaded into the high‐temperature reactor (HTR) prismatic fuel block designs for a seed‐and‐blanket (S&B) reactor model. The selected fuel block design is the simplified model of a representative fuel configuration for the gas turbine–module helium reactor (GT‐MHR) and high‐temperature engineering test reactor (HTTR). The duplex fuel pellet comprises of UO2 as the seed and ThO2 as the blanket and uses the TRISO fuels. Monte Carlo N‐particle extended (MCNPX) simulations were conducted to analyze the power and neutron flux distributions of the reference fuel block and that of the TRIOS‐loaded duplex fuel designs. Standard neutronic parameters were computed, such as burnup‐dependent infinite multiplication factors (kinf), average block spectrum, and fissile inventory. It was discovered that while the S&B model could attain the highest burnup and the longest cycle duration, its power peaking was more than threefolds than that of the reference model at the beginning of the cycle (BOC). The results also show that the “Duplex‐2” model could reduce its power peaking by 24% through the integration of S&B arrangement with the duplex rods. It is noted that spatial distribution of the UO2 seed and 235U enrichment are the chief determining factors in the power optimization of the heterogeneous HTR prismatic fuel blocks loaded with thorium.

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Section: Methodsmentioning

confidence: 99%

A neutronic investigation of tristructural isotropic‐duplex fuel in a high‐temperature reactor prismatic seed‐and‐blanket fuel block configuration with reduced power peaking

2021

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“…Прогресс в ядерной энергетике требует использования новых материалов для увеличения срока эксплуатации ядерных реакторов, эффективности использования ядерного топлива и разработки перспективных типов реакторов [171,172]. Такие материалы должны иметь повышенную устойчивость к тепловым, физическим и радиационным нагрузкам [173].…”

Section: инспекция материалов ядерных реакторовunclassified

Перспективные Технологии Для Прикладных Резонансных Ускорителей Заряженных Частиц И Примеры Их Использования (Обзор)

Kutsaev

2021

Журнал Технической Физики

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This paper presents the author’s vision on current and future trends in RF particle accelerators development for industrial applications, based on his own work experience in this area. This review covers the most interesting and promising area of applications, according to author’s point of view, where a significant progress has been or can be achieved thanks to the novel technologies. In particular, high gradient structures, new materials and fabrication techniques, cryogenic systems and novel acceleration schemes led to miniaturization, efficiency and variability of the accelerators for industrial, medical, security and scientific applications, and even quantum computers.

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“…It has similar safety and technological features as the GT‐MHR; they both incorporate the same arrangement of seed‐and‐blanket fuel blocks 7,75,79‐86 . It is also said that the U‐Battery has the biggest potential for commercialization compared to other micro‐HTR reactors 87 …”

Section: Htrmentioning

confidence: 99%

Review of the microheterogeneous thoria‐urania fuel for micro‐sized high temperature reactors

2020

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Summary This paper presents a systematic review of the micro‐modular thorium‐fueled high temperature reactors (HTR) loaded with duplex fuel pellet design. Specifically, each unique criterion of the design is discussed separately in an attempt to understand the combined advantages of the proposed reactor. Micro modular HTRs have great potential as a source of electricity or industrial heat in the future. The use of thorium not only improves its economic performance and safety, but also prolongs its operation. Nevertheless, the traditional seed‐and‐blanket configuration would not be able to maximize the thorium fuel burnup. As such, a new tristructural‐isotopic (TRISO) fuel based on duplex pellet designs were proposed instead. It should be noted that these duplex pellets were not practical for pressurized water reactor (PWR) technology due to its uneven power distribution which possibly leads to a very high local pellet temperature. However, this unorthodox inherent characteristics of the duplex pellets may actually suit the HTR burnup profile better due to its substantially higher thermal margin ‐ thus possibly enabling a relatively long operation of the HTR. The paper shall thereby provide a reasonably sound justification for the detailed technical investigations of the proposed reactor design.

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Challenges to deployment of twenty-first century nuclear reactor systems

Cited by 7 publications

References 26 publications

A neutronic investigation of tristructural isotropic‐duplex fuel in a high‐temperature reactor prismatic seed‐and‐blanket fuel block configuration with reduced power peaking

A neutronic investigation of tristructural isotropic‐duplex fuel in a high‐temperature reactor prismatic seed‐and‐blanket fuel block configuration with reduced power peaking

Перспективные Технологии Для Прикладных Резонансных Ускорителей Заряженных Частиц И Примеры Их Использования (Обзор)

Review of the microheterogeneous thoria‐urania fuel for micro‐sized high temperature reactors

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