ADVANCEMENT OF THE SPENT FUEL POOL TEMPERATURE EVALUATION IN ONAGAWA NPPS

Satoshi Kodama; Yuhei Hamada; Kazumasa Inomata; Daisuke Sato

doi:10.1299/jsmeicone.2023.30.1497

2023.30

Session ID : 1497

DOI https://doi.org/10.1299/jsmeicone.2023.30.1497

Conference information

Host: The Japan Society of Mechanical Engineers

Name : The 30th International Conference on Nuclear Engineering (ICONE30)

Date : May 21, 2023 - May 26, 2023

ADVANCEMENT OF THE SPENT FUEL POOL TEMPERATURE EVALUATION IN ONAGAWA NPPS

Satoshi Kodama, Yuhei Hamada, Kazumasa Inomata, Daisuke Sato

Author information

Keywords: spent fuel pool, fuel decay heat, natural heat dissipation, heat balance, temperature evaluation

CONFERENCE PROCEEDINGS RESTRICTED ACCESS

Details

Abstract

In the Onagawa Nuclear Power Station Units 1 and 3, it was confirmed that the spent fuel pool (hereinafter referred to as pool) water temperature converged to a certain temperature even when there is no cooling of the pool.

In addition, it was confirmed that the convergence temperature is well below the operating limit set by the safety regulations in the current fuel storage condition during long-term shutdown of the plant.

Furthermore, it was confirmed that the evaluation results from the newly constructed pool water temperature evaluation model were in good agreement with the measurement results.

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