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Temperature Profile Measurement in Simulated Fuel Assembly Structure with Wire-Mesh Technology
Joint Authors
Takiguchi, Hiroki
Furuya, Masahiro
Arai, Takahiro
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-11-13
Country of Publication
Egypt
No. of Pages
9
Abstract EN
When light water reactor (LWR) is subject to a cold shutdown, it needs to be cooled with pure water or seawater to prevent the core melting.
To precisely evaluate the cooling characteristics in the fuel assembly, a measurement method capable of installing to the fuel assembly structure and determining the temperature distribution with high temporal resolution, high spatial resolution, and in multidimension is required.
Furthermore, it is more practical if applicable to a pressure range up to the rated pressure 16 MPa of a pressurized water reactor (PWR).
In this study, we applied the principle of the wire-mesh sensor technology used in the void fraction measurement to the temperature measurement and developed a simulated fuel assembly (bundle) test loop with installing the temperature profile sensors.
To investigate the measurement performance in the bundle test section, it was confirmed that a predetermined temperature calibration line with respect to time-average impedance was calculated and became a function of temperature.
To evaluate the followability of measurement in a transient temperature change process, we fabricated a 16 × 16 wire-mesh sensor device and measured the hot-water jet-mixing process into the cold-water pool in real time and calculated the temperature profile from the temperature calibration line obtained in advance from each measurement point.
In addition, the sensors applied to three-dimensional temperature distribution measurement of a complex flow field in the bundle structure.
The axial and cross-sectional profiles of temperature were quantified in the forced flow field with nonboiling when the 5×5 bundle was heated by energization.
American Psychological Association (APA)
Takiguchi, Hiroki& Furuya, Masahiro& Arai, Takahiro. 2018. Temperature Profile Measurement in Simulated Fuel Assembly Structure with Wire-Mesh Technology. Science and Technology of Nuclear Installations،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1214905
Modern Language Association (MLA)
Takiguchi, Hiroki…[et al.]. Temperature Profile Measurement in Simulated Fuel Assembly Structure with Wire-Mesh Technology. Science and Technology of Nuclear Installations No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1214905
American Medical Association (AMA)
Takiguchi, Hiroki& Furuya, Masahiro& Arai, Takahiro. Temperature Profile Measurement in Simulated Fuel Assembly Structure with Wire-Mesh Technology. Science and Technology of Nuclear Installations. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1214905
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1214905