Characterization of particles formed during laser cutting of simulated fuel-containing materials from the Fukushima-Daiichi NPP and of SNF samples
- 作者: Makarov А.O.1, Momotov V.N.1, Semin S.D.2, Nikitin O.N.1, Lakeev P.V.1, Efimov V.A.1, Reztsova V.А.1, Tikhonova D.E.1
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隶属关系:
- State Scientific Center Research Institute of Atomic Reactors
- AO TVEL
- 期: 卷 67, 编号 2 (2025)
- 页面: 165-175
- 栏目: Articles
- URL: https://consilium.orscience.ru/0033-8311/article/view/689628
- DOI: https://doi.org/10.31857/S0033831125020084
- ID: 689628
如何引用文章
详细
Fragmentation of massive debris of the fuel and fuel-containing materials (FCMs) is one of important steps in the final decommissioning of the Fukushima Daiichi NPP. The generation and dissemination of radioactive microparticles in the course of the fragmentation largely depend on the cutting technology used. A previous study [1] dealt with the experimental cutting of simulated FCM and spent nuclear fuel (SNF) samples to justify the optimum configuration and operation conditions of the gas treatment system. To understand the properties of particles generated in the course of cutting FCM and SNF samples and to justify the methods for their localization, it is necessary to study in more detail the size, shape, and composition of the structures formed. We used in this study the microparticles formed by laser cutting of simulated FCMs from the Fukushima Daiichi NPP and of SNF samples. The microparticles formed were examined with a laser particle size analyzer and with a scanning electron microscope equipped with wave- and energy-dispersive spectrometers. The formation of particles of different size and morphology was noted. The laser cutting generates separate particles of submicron size and different morphology, which form agglomerates. Up to 35 wt % of particles formed by laser cutting of the simulated FDM passed into the vapor–gas phase. For the VVER (water-cooled water-moderated energy reactor) SNF, this fraction was 25 wt %. The major components of all kinds of particles formed by laser cutting of SNF are uranium, oxygen, and zirconium; their total fraction is in the range from 97.9 to 98.4%. The plutonium content ranges from 0.7 to 1.3%.
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作者简介
А. Makarov
State Scientific Center Research Institute of Atomic Reactors
Email: momotov@niiar.ru
俄罗斯联邦, Zapadnoe shosse, 9, Dimitrovgrad, Ulyanovsk oblast, 433510
V. Momotov
State Scientific Center Research Institute of Atomic Reactors
编辑信件的主要联系方式.
Email: momotov@niiar.ru
俄罗斯联邦, Zapadnoe shosse, 9, Dimitrovgrad, Ulyanovsk oblast, 433510
S. Semin
AO TVEL
Email: SDmSemin@tvel.ru
俄罗斯联邦, Kashirskoe shosse, 49, Moscow, 115409
O. Nikitin
State Scientific Center Research Institute of Atomic Reactors
Email: momotov@niiar.ru
俄罗斯联邦, Zapadnoe shosse, 9, Dimitrovgrad, Ulyanovsk oblast, 433510
P. Lakeev
State Scientific Center Research Institute of Atomic Reactors
Email: momotov@niiar.ru
俄罗斯联邦, Zapadnoe shosse, 9, Dimitrovgrad, Ulyanovsk oblast, 433510
V. Efimov
State Scientific Center Research Institute of Atomic Reactors
Email: momotov@niiar.ru
俄罗斯联邦, Zapadnoe shosse, 9, Dimitrovgrad, Ulyanovsk oblast, 433510
V. Reztsova
State Scientific Center Research Institute of Atomic Reactors
Email: momotov@niiar.ru
俄罗斯联邦, Zapadnoe shosse, 9, Dimitrovgrad, Ulyanovsk oblast, 433510
D. Tikhonova
State Scientific Center Research Institute of Atomic Reactors
Email: momotov@niiar.ru
俄罗斯联邦, Zapadnoe shosse, 9, Dimitrovgrad, Ulyanovsk oblast, 433510
参考
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