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Development of a fiber-coupled laser-induced breakdown spectroscopy instrument for analysis of underwater debris in a nuclear reactor core

Development of a fiber-coupled laser-induced breakdown spectroscopy instrument for analysis of underwater debris in a nuclear reactor core
Development of a fiber-coupled laser-induced breakdown spectroscopy instrument for analysis of underwater debris in a nuclear reactor core
To inspect the post-accident nuclear core reactor of the TEPCO Fukushima Daiichi nuclear power plant (F1-NPP), a transportable fiber-coupled laser-induced breakdown spectroscopy (LIBS) instrument has been developed. The developed LIBS instrument was designed to analyze underwater samples in a high-radiation field by single-pulse breakdown with gas flow or double-pulse breakdown. To check the feasibility of the assembled fiber-coupled LIBS instrument for the analysis of debris material (mixture of the fuel core, fuel cladding, construction material and so on) in the F1-NPP, we investigated the influence of the radiation dose on the optical transmittance of the laser delivery fiber, compared data quality among various LIBS techniques for an underwater sample and studied the feasibility of the fiber-coupled LIBS system in an analysis of the underwater sample of the simulated debris in F1-NPP. In a feasible study conducted by using simulated debris, which was a mixture of CeO2 (surrogate of UO2), ZrO2 and Fe, we selected atomic lines suitable for the analysis of materials, and prepared calibration curves for the component elements. The feasible study has guaranteed that the developed fiber-coupled LIBS system is applicable for analyzing the debris materials in the F1-NPP.
0022-3131
930-938
Saeki, Morihisa
a86def9e-c42b-4665-b61b-194355ade7f1
Iwanade, Akio
628579ca-168f-4832-a569-4fa1259ec97f
Ito, Chikara
7a5acd03-2ffe-4378-862a-47c9fd5a7a67
Wakaida, Ikuo
6174df69-1e55-481a-b4df-de186e2ce8ce
Thornton, Blair
8293beb5-c083-47e3-b5f0-d9c3cee14be9
Sakka, Tetsuo
fd41ffee-1abd-46cb-99dc-94bb96aecc38
Ohba, Hironori
da7c01ff-ef61-4421-aefc-4a8387284483
Saeki, Morihisa
a86def9e-c42b-4665-b61b-194355ade7f1
Iwanade, Akio
628579ca-168f-4832-a569-4fa1259ec97f
Ito, Chikara
7a5acd03-2ffe-4378-862a-47c9fd5a7a67
Wakaida, Ikuo
6174df69-1e55-481a-b4df-de186e2ce8ce
Thornton, Blair
8293beb5-c083-47e3-b5f0-d9c3cee14be9
Sakka, Tetsuo
fd41ffee-1abd-46cb-99dc-94bb96aecc38
Ohba, Hironori
da7c01ff-ef61-4421-aefc-4a8387284483

Saeki, Morihisa, Iwanade, Akio, Ito, Chikara, Wakaida, Ikuo, Thornton, Blair, Sakka, Tetsuo and Ohba, Hironori (2014) Development of a fiber-coupled laser-induced breakdown spectroscopy instrument for analysis of underwater debris in a nuclear reactor core. Journal of Nuclear Science and Technology, 51 (7-8), 930-938. (doi:10.1080/00223131.2014.917996).

Record type: Article

Abstract

To inspect the post-accident nuclear core reactor of the TEPCO Fukushima Daiichi nuclear power plant (F1-NPP), a transportable fiber-coupled laser-induced breakdown spectroscopy (LIBS) instrument has been developed. The developed LIBS instrument was designed to analyze underwater samples in a high-radiation field by single-pulse breakdown with gas flow or double-pulse breakdown. To check the feasibility of the assembled fiber-coupled LIBS instrument for the analysis of debris material (mixture of the fuel core, fuel cladding, construction material and so on) in the F1-NPP, we investigated the influence of the radiation dose on the optical transmittance of the laser delivery fiber, compared data quality among various LIBS techniques for an underwater sample and studied the feasibility of the fiber-coupled LIBS system in an analysis of the underwater sample of the simulated debris in F1-NPP. In a feasible study conducted by using simulated debris, which was a mixture of CeO2 (surrogate of UO2), ZrO2 and Fe, we selected atomic lines suitable for the analysis of materials, and prepared calibration curves for the component elements. The feasible study has guaranteed that the developed fiber-coupled LIBS system is applicable for analyzing the debris materials in the F1-NPP.

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More information

Accepted/In Press date: 21 April 2014
e-pub ahead of print date: 22 May 2014
Published date: July 2014
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 400014
URI: http://eprints.soton.ac.uk/id/eprint/400014
ISSN: 0022-3131
PURE UUID: 0243717f-93e6-4daa-a290-b26ea5d58225

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Date deposited: 07 Sep 2016 08:42
Last modified: 08 Jan 2022 12:40

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Contributors

Author: Morihisa Saeki
Author: Akio Iwanade
Author: Chikara Ito
Author: Ikuo Wakaida
Author: Blair Thornton
Author: Tetsuo Sakka
Author: Hironori Ohba

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