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Development of a fiber-optic remote temperature sensor to monitor water temperature in a spent nuclear fuel pool

  • Special Section: Regular Paper
  • The 11th International Conference on Optics-Photonics Design & Fabrication (ODF’18), Hiroshima, Japan
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Abstract

In this study, a fiber-optic remote temperature sensor (FRTS) for real-time temperature measurements in a spent nuclear fuel pool is developed. The proposed FRTS consists of a fiber-optic temperature-sensing probe and an optical time-domain reflectometer (OTDR). The probe of an FRTS consists of silicone oil, a fiber channel (FC) terminator, a single-mode optical fiber, and a copper metal cap. Silicone oil is employed as a temperature-sensing material owing to its temperature-dependent refractive index. The optical powers of the reflected light signals (Fresnel reflection), which are generated at the interface between the silicone oil and the core of a single-mode optical fiber in the distal end of the sensing probe, are measured. The temperature of the water was measured in 5 ℃ increments ranging from 10 to 70 ℃, using a fabricated FRTS and an OTDR. The proposed FRTS could be used to effectively monitor the water temperature of a spent nuclear fuel pool (SNFP) at a nuclear power plant (NPP).

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Acknowledgements

This research was supported by the Chung-Ang University Research Grants in 2017 and this research was also supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2017R1A2B2009480).

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Authors and Affiliations

  1. School of Energy Systems Engineering, Chung-Ang University, Seoul, Korea

    Sang Hun Shin, Hyungi Byun, Jin Ho Kim, Hyun Young Shin, Si Won Song & Bongsoo Lee

  2. Department of Organic Materials and Fiber Engineering, Soongsil University, Seoul, Korea

    Seunghyun Cho

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  1. Sang Hun Shin
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  2. Hyungi Byun
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  3. Jin Ho Kim
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  4. Hyun Young Shin
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  5. Si Won Song
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  7. Bongsoo Lee
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Correspondence to Bongsoo Lee.

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Shin, S.H., Byun, H., Kim, J.H. et al. Development of a fiber-optic remote temperature sensor to monitor water temperature in a spent nuclear fuel pool. Opt Rev 26, 472–477 (2019). https://doi.org/10.1007/s10043-019-00538-y

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  • DOI: https://doi.org/10.1007/s10043-019-00538-y

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