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Impact on the Sustainable Development Goals (SDGs)

Analysis of institutional authors

Torres Delgado, Luis AlejandroAuthorTorres La, Montalvo C, Gavilán Cj, García-Berrocal ACorresponding AuthorMontalvo, CAuthor

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January 22, 2024
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Anomaly detection in BWR fuel cell using neutron noise analysis techniques. Slow control rod detection

Publicated to: NUCLEAR ENGINEERING AND DESIGN. 416 112770- - 2024-01-01 416(), DOI: 10.1016/j.nucengdes.2023.112770

Authors:

Torres, LA; Montalvo, C; Gavilán, CJ; García-Berrocal, A
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Affiliations

Iberdrola Generac Nucl, Paraje El Plano S-N, Cofrentes 46625, Valencia, Spain - Author
Iberdrola, S.A - Author
Univ Politecn Madrid UPM, Energy & Fuels Dept, Rios Rosas 21, Madrid 28003, Spain - Author
Universidad Politécnica de Madrid - Author
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Abstract

A two-step methodology based on noise analysis techniques was applied to detect and monitor a resonance to do with a control rod-related anomaly, notified as SLOW in a BWR-6 core. The methodology utilizes LPRM (Local Power Range Monitor) neutron flux signals. The first step involves applying traditional noise analysis to all available neutron detector signals. Both NAPSDs (Normalized Auto Power Spectral Density) and CPSDs (coherences and phases) were estimated. The second step uses EMD (Empirical Mode Decomposition) and VMD (Variational Mode Decomposition) in a sequence of successive decompositions which allow both the resonance under study to be isolated in only one IMF (Intrinsic Mode Functions) and the main resonance peak parameters (frequency, amplitude, and damping) to be estimated. On the one hand, it was possible to delimit the zone where perturbation takes place, though the phenomenon seemed to be quite local and not all detectors could provide information on it. On the other hand, intrinsic mode functions make it possible to observe traces of potential instrumentation tube impacts in the Hilbert Spectrum. The methodology proved to be very effective to monitor resonances even when these were not visible in the spectrum. The changes observed coincide with the corrective actions carried out by the plant.
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Keywords

emdneutron noisevmdAffordable and clean energyEmdNeutron noiseSlow control rod. noise analysisVmd

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal NUCLEAR ENGINEERING AND DESIGN due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Nuclear Energy and Engineering.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-04-09:

  • WoS: 1
  • Scopus: 1
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-09:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 1 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/81578/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 231
  • Downloads: 144
Continuing with the social impact of the work, it is important to emphasize that, due to its content, it can be assigned to the area of interest of ODS 7 - Affordable and clean energy, with a probability of 69% according to the mBERT algorithm developed by Aurora University.
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Leadership analysis of institutional authors

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (GARCIA-BERROCAL SANCHEZ, AGUSTIN) and Last Author (Garcia-Berrocal, A).

the author responsible for correspondence tasks has been GARCIA-BERROCAL SANCHEZ, AGUSTIN.

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Project objectives

La aportación persigue los siguientes objetivos: analizar señales de flujo de neutrones mediante técnicas tradicionales de análisis de ruido para detectar anomalías relacionadas con barras de control en un núcleo BWR-6; estimar NAPSDs y CPSDs para caracterizar coherencias y fases de las señales; aplicar descomposiciones EMD y VMD para aislar resonancias específicas en funciones modales intrínsecas (IMF); determinar parámetros principales de resonancia como frecuencia, amplitud y amortiguamiento; delimitar la zona de perturbación y evaluar la localización del fenómeno; y monitorizar resonancias no visibles en el espectro, correlacionando los cambios detectados con acciones correctivas implementadas en la planta.
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Most relevant results

El estudio presenta una metodología en dos pasos basada en técnicas de análisis de ruido para detectar y monitorizar una anomalía relacionada con una varilla de control en un núcleo BWR-6. En primer lugar, se aplicó análisis tradicional de ruido a señales de flujo de neutrones de detectores LPRM, estimando NAPSDs y CPSDs. En segundo lugar, se emplearon EMD y VMD para aislar la resonancia en una única IMF y estimar parámetros principales: frecuencia, amplitud y amortiguamiento. Se delimitó la zona de perturbación, observándose que el fenómeno es local y no detectable por todos los detectores. Además, las IMF permitieron identificar posibles impactos en tubos de instrumentación mediante el Espectro de Hilbert. La metodología demostró eficacia para monitorizar resonancias no visibles en el espectro, con cambios coincidentes con acciones correctivas de la planta.
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