SEDIMENT STATE ESTIMATION BASED ON PCV INTERNAL INVESTIGATION RESULTS FOR FUKUSHIMA DAIICHI NUCLEAR POWER STATION UNIT 1

Ryosuke Kobayashi; Katsunori Ueno; Yuji Matsui; Takeshi Mitsuyasu; Satoshi Okada

doi:10.1299/jsmefdr.2024.0_1048

2024

Session ID : 1048

DOI https://doi.org/10.1299/jsmefdr.2024.0_1048

Conference information

Host: The Japan Society of Mechanical Engineers

Name : Proceedings of FDR2024 International Topical Workshop on Fukushima Decommissioning Research

Date : October 10, 2024 - October 13, 2024

SEDIMENT STATE ESTIMATION BASED ON PCV INTERNAL INVESTIGATION RESULTS FOR FUKUSHIMA DAIICHI NUCLEAR POWER STATION UNIT 1

Ryosuke Kobayashi, Katsunori Ueno, Yuji Matsui, Takeshi Mitsuyasu, Satoshi Okada

Author information

Keywords: PCV internal, Investigation, ROV, Ultrasonic measurement, Sediment

CONFERENCE PROCEEDINGS RESTRICTED ACCESS

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Abstract

An investigation was conducted in which underwater robots entered the PCV basement floor area, and various sensors mounted on the robots were used to measure information about sediments and the state of damage inside the PCV. In this paper, we describe 3D mapping method of sediments by an ultrasonic sensor and the investigation results of actual plant.

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