Vibration monitoring using fiber optic sensors in a lead-bismuth eutectic cooled nuclear fuel assembly

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Vibration monitoring using fiber optic sensors in a lead-bismuth eutectic cooled nuclear fuel assembly. / De Pauw, Ben; Lamberti, A.; Ertveldt, J.; Rezayat, A.; Van Tichelen, Katrien; Vanlanduit, Steve; Berghmans, Francis.

In: Sensors, Vol. 16, No. 4, 2016, p. 571.

Research output: Contribution to journalArticle

Harvard

De Pauw, B, Lamberti, A, Ertveldt, J, Rezayat, A, Van Tichelen, K, Vanlanduit, S & Berghmans, F 2016, 'Vibration monitoring using fiber optic sensors in a lead-bismuth eutectic cooled nuclear fuel assembly', Sensors, vol. 16, no. 4, pp. 571. https://doi.org/10.3390/s16040571

APA

Author

De Pauw, Ben ; Lamberti, A. ; Ertveldt, J. ; Rezayat, A. ; Van Tichelen, Katrien ; Vanlanduit, Steve ; Berghmans, Francis. / Vibration monitoring using fiber optic sensors in a lead-bismuth eutectic cooled nuclear fuel assembly. In: Sensors. 2016 ; Vol. 16, No. 4. pp. 571.

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@article{1a6410e2ea9345a9830f5b328e254915,
title = "Vibration monitoring using fiber optic sensors in a lead-bismuth eutectic cooled nuclear fuel assembly",
abstract = "Excessive fuel assembly vibrations in nuclear reactor cores should be avoided in order not to compromise the lifetime of the assembly and in order to prevent the occurrence of safety hazards. This issue is particularly relevant to new reactor designs that use liquid metal coolants, such as, for example, a molten lead-bismuth eutectic. The flow of molten heavy metal around and through the fuel assembly may cause the latter to vibrate and hence suffer degradation as a result of, for example, fretting wear or mechanical fatigue. In this paper, we demonstrate the use of optical fiber sensors to measure the fuel assembly vibration in a lead-bismuth eutectic cooled installation which can be used as input to assess vibration-related safety hazards. We show that the vibration characteristics of the fuel pins in the fuel assembly can be experimentally determined with minimal intrusiveness and with high precision owing to the small dimensions and properties of the sensors. In particular, we were able to record local strain level differences of about 0.2 μϵ allowing us to reliably estimate the vibration amplitudes and modal parameters of the fuel assembly based on optical fiber sensor readings during different stages of the operation of the facility, including the onset of the coolant circulation and steady-state operation.",
keywords = "liquid metal flows, FBG, vibration, operational modal analysis, experiments, Fluid-Structure Interaction, High temperature",
author = "{De Pauw}, Ben and A. Lamberti and J. Ertveldt and A. Rezayat and {Van Tichelen}, Katrien and Steve Vanlanduit and Francis Berghmans",
note = "Score=10",
year = "2016",
doi = "10.3390/s16040571",
language = "English",
volume = "16",
pages = "571",
journal = "Sensors",
issn = "1424-8220",
publisher = "MDPI",
number = "4",

}

RIS - Download

TY - JOUR

T1 - Vibration monitoring using fiber optic sensors in a lead-bismuth eutectic cooled nuclear fuel assembly

AU - De Pauw, Ben

AU - Lamberti, A.

AU - Ertveldt, J.

AU - Rezayat, A.

AU - Van Tichelen, Katrien

AU - Vanlanduit, Steve

AU - Berghmans, Francis

N1 - Score=10

PY - 2016

Y1 - 2016

N2 - Excessive fuel assembly vibrations in nuclear reactor cores should be avoided in order not to compromise the lifetime of the assembly and in order to prevent the occurrence of safety hazards. This issue is particularly relevant to new reactor designs that use liquid metal coolants, such as, for example, a molten lead-bismuth eutectic. The flow of molten heavy metal around and through the fuel assembly may cause the latter to vibrate and hence suffer degradation as a result of, for example, fretting wear or mechanical fatigue. In this paper, we demonstrate the use of optical fiber sensors to measure the fuel assembly vibration in a lead-bismuth eutectic cooled installation which can be used as input to assess vibration-related safety hazards. We show that the vibration characteristics of the fuel pins in the fuel assembly can be experimentally determined with minimal intrusiveness and with high precision owing to the small dimensions and properties of the sensors. In particular, we were able to record local strain level differences of about 0.2 μϵ allowing us to reliably estimate the vibration amplitudes and modal parameters of the fuel assembly based on optical fiber sensor readings during different stages of the operation of the facility, including the onset of the coolant circulation and steady-state operation.

AB - Excessive fuel assembly vibrations in nuclear reactor cores should be avoided in order not to compromise the lifetime of the assembly and in order to prevent the occurrence of safety hazards. This issue is particularly relevant to new reactor designs that use liquid metal coolants, such as, for example, a molten lead-bismuth eutectic. The flow of molten heavy metal around and through the fuel assembly may cause the latter to vibrate and hence suffer degradation as a result of, for example, fretting wear or mechanical fatigue. In this paper, we demonstrate the use of optical fiber sensors to measure the fuel assembly vibration in a lead-bismuth eutectic cooled installation which can be used as input to assess vibration-related safety hazards. We show that the vibration characteristics of the fuel pins in the fuel assembly can be experimentally determined with minimal intrusiveness and with high precision owing to the small dimensions and properties of the sensors. In particular, we were able to record local strain level differences of about 0.2 μϵ allowing us to reliably estimate the vibration amplitudes and modal parameters of the fuel assembly based on optical fiber sensor readings during different stages of the operation of the facility, including the onset of the coolant circulation and steady-state operation.

KW - liquid metal flows

KW - FBG

KW - vibration

KW - operational modal analysis

KW - experiments

KW - Fluid-Structure Interaction

KW - High temperature

UR - http://ecm.sckcen.be/OTCS/llisapi.dll?func=ll&objaction=overview&objid=19600588

U2 - 10.3390/s16040571

DO - 10.3390/s16040571

M3 - Article

VL - 16

SP - 571

JO - Sensors

JF - Sensors

SN - 1424-8220

IS - 4

ER -

ID: 1432012