Nondestructive burnup measurements by gamma-ray spectroscopy on spent fuel elements of the RP-10 research reactor

Mora, Mariano Vela; Padilla, Alberto Gallardo; Palomino, José Luis Castro; Terremoto, L.A.A.

doi:10.1016/j.pnucene.2011.01.003

Cited by 15 publications

(4 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The short-lived isotopes, such as 131 I, 132 I, La, and 99m Tc, could only originate from recent irradiation of the FA. The gamma spectroscopy analysis technique was similar to the one used by Mora et al [45]. Table 2 details the isotopes measured in the experiment.…”

Section: Experimental Spectroscopy Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

High-Fidelity Monte Carlo Analysis of Highly-Localized Fission Power Peaking near a Flux Trap in an MTR Core

Abuzlf,

Castagna,

Makmal

et al. 2023

International Journal of Energy Research

View full text Add to dashboard Cite

In this study, a high-fidelity Monte Carlo model was utilized to investigate the localized behavior of the power peaking factor in a reactor core. The model considered the effect of water gaps, also known as flux traps, on the local power peaking. The model, developed using the Serpent code, employs a fine spatial mesh to accurately describe the fission power and burnup distribution. The results obtained from the model were validated through comparison with experimental measurements of the power distribution obtained from the IRR1 facility. The study found that the local accumulation of thermal flux caused by enhanced neutron moderation in the flux trap leads to a highly localized increase in power density, affecting the power peaking factor. The quantification of this effect was a key finding of the study. The results obtained from the study were highly dependent on the model’s fidelity, with significant differences being observed between the power peaking factor calculated on a fine mesh as opposed to that calculated at the plate or assembly scale. Furthermore, the experimental validation of the model enabled the prediction of the power peaking factor in other regions within the fuel assembly, which are not accessible to measurement instrumentation, with a high degree of confidence. The study’s findings may be useful for optimizing reactor design and operation and assessing the safety margins in reactors with similar characteristics.

show abstract

Section: Experimental Spectroscopy Measurementsmentioning

confidence: 99%

“…The local depletion level was inferred from the measurements by employing an established methodology [41,43,45], assuming that the count rate is proportional to the concentration of the fission product indicator ( 137 Cs in this example). The relation between the count rate and the concentration of 137 Cs is described briefly.…”

Section: 21mentioning

confidence: 99%

High-Fidelity Monte Carlo Analysis of Highly-Localized Fission Power Peaking near a Flux Trap in an MTR Core

Abuzlf,

Castagna,

Makmal

et al. 2023

International Journal of Energy Research

View full text Add to dashboard Cite

show abstract

“…It is widely discussed in recent years that those observables can be applied to non-destructive analysis, monitoring nuclear reactor, etc. [7][8][9][10][11]. The past JENDL fission yield and decay data, however, have not paid a particular attention to those observables as well as delayed neutron yields.…”

Section: Introductionmentioning

confidence: 99%

Toward next JENDL Fission Yield Data and Decay Data

Minato

2020

EPJ Web Conf.

View full text Add to dashboard Cite

show abstract

“…Outro fato notável é a grande dispersão dos resultados desta razão, que pode ser explicado pela combinação dos seguintes fatores: a) perfil de queima não uniforme ao longo da largura e do comprimento ativos dos combustíveis nucleares irradiados em reatores de pesquisa tipo MTR (Terremoto et al, 2000;Mora et al, 2011); b) diversidade das formas químicas do U empregado na fabricação dos combustíveis nucleares utilizados no reator IEA-R1…”

Section: Comparação Com Concentrações De Atividade Naturaisunclassified

Determinação de fatores de escala para estimativa do inventário de radionuclídeos em rejeitos de média e baixa atividades do reator IEA-R1

Taddei¹

View full text Add to dashboard Cite

Ao colega José Flávio Macacini pela colaboração e disponibilidade durante este projeto, Aos colegas Adriana Calixto de Almeida Lima e Élis de O. Lima Filho pela ajuda na formatação do trabalho, Ao Coordenador do LAPOC/CNEN-MG, Antonio Luiz Quinelato, pela compreensão e colaboração, Aos amigos que estiveram presentes no laboratório e me auxiliaram de alguma maneira neste trabalho, Ao IPEN/CNEN-SP por possibilitar a realização do trabalho.

show abstract

Nondestructive burnup measurements by gamma-ray spectroscopy on spent fuel elements of the RP-10 research reactor

Cited by 15 publications

References 8 publications

High-Fidelity Monte Carlo Analysis of Highly-Localized Fission Power Peaking near a Flux Trap in an MTR Core

High-Fidelity Monte Carlo Analysis of Highly-Localized Fission Power Peaking near a Flux Trap in an MTR Core

Toward next JENDL Fission Yield Data and Decay Data

Determinação de fatores de escala para estimativa do inventário de radionuclídeos em rejeitos de média e baixa atividades do reator IEA-R1

Contact Info

Product

Resources

About