Integration of ultrasonic measurement and robotic system for measurement in NPP decommissioning for Fukushima

A. Hamdani, N. Tsuzuki, G. Endo, K. Kazushi, H. Kikura

    Research output: Contribution to journalConference articlepeer-review


    The key feature of this study is that we propose to combine the ultrasonic imaging of the debris with ultrasonic velocity profilometry method for velocity profiles, thus, create a compact sensor system for assessment of the damaged reactor cores. The sensor system will be mounted on a specially designed robotic platform, and we have included experts in robotics in this study. Should be noted that the high radiation environment is our challenge. Therefore, the performance and endurance of the ultrasonic measurement system should be evaluated. Based on the previous study, a significant modifications to conventional designs of ultrasonic transducer have led to the availability of custom transducers that can endure well over 100 MegaGrays of cumulative gamma dose [5]. However, the accuracy and endurance test for the ultrasonic measurement is still under investigation. Nevertheless, the study represents a significant step forward in our ability to decommission the Fukushima Dai-ichi nuclear power plant.

    Original languageEnglish
    Pages (from-to)917-919
    Number of pages3
    JournalTransactions of the American Nuclear Society
    Publication statusPublished - 2017
    Event2017 Transactions of the American Nuclear Society, ANS 2017 - Washington, United States
    Duration: Oct 29 2017Nov 2 2017

    ASJC Scopus subject areas

    • Nuclear Energy and Engineering
    • Safety, Risk, Reliability and Quality


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